X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/45d9e051f52c4c61a6510bfd74897d60bf15f1cf..2cb1462602ac9471c579ae0900c5965017ddc5e0:/vendor/assets/iD/iD.js?ds=sidebyside diff --git a/vendor/assets/iD/iD.js b/vendor/assets/iD/iD.js index 0b0a39008..99da55a78 100644 --- a/vendor/assets/iD/iD.js +++ b/vendor/assets/iD/iD.js @@ -1,75706 +1,83592 @@ -(function(exports) { - - var bootstrap = (typeof exports.bootstrap === "object") ? - exports.bootstrap : - (exports.bootstrap = {}); - - bootstrap.tooltip = function() { - - var tooltip = function(selection) { - selection.each(setup); - }, - animation = d3.functor(false), - html = d3.functor(false), - title = function() { - var title = this.getAttribute("data-original-title"); - if (title) { - return title; - } else { - title = this.getAttribute("title"); - this.removeAttribute("title"); - this.setAttribute("data-original-title", title); +(() => { + var __create = Object.create; + var __defProp = Object.defineProperty; + var __getOwnPropDesc = Object.getOwnPropertyDescriptor; + var __getOwnPropNames = Object.getOwnPropertyNames; + var __getProtoOf = Object.getPrototypeOf; + var __hasOwnProp = Object.prototype.hasOwnProperty; + var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value; + var __require = /* @__PURE__ */ ((x2) => typeof require !== "undefined" ? require : typeof Proxy !== "undefined" ? new Proxy(x2, { + get: (a2, b2) => (typeof require !== "undefined" ? require : a2)[b2] + }) : x2)(function(x2) { + if (typeof require !== "undefined") return require.apply(this, arguments); + throw Error('Dynamic require of "' + x2 + '" is not supported'); + }); + var __commonJS = (cb, mod) => function __require2() { + return mod || (0, cb[__getOwnPropNames(cb)[0]])((mod = { exports: {} }).exports, mod), mod.exports; + }; + var __export = (target, all) => { + for (var name in all) + __defProp(target, name, { get: all[name], enumerable: true }); + }; + var __copyProps = (to, from, except, desc) => { + if (from && typeof from === "object" || typeof from === "function") { + for (let key of __getOwnPropNames(from)) + if (!__hasOwnProp.call(to, key) && key !== except) + __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable }); + } + return to; + }; + var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps( + // If the importer is in node compatibility mode or this is not an ESM + // file that has been converted to a CommonJS file using a Babel- + // compatible transform (i.e. "__esModule" has not been set), then set + // "default" to the CommonJS "module.exports" for node compatibility. + isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target, + mod + )); + var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value); + + // node_modules/diacritics/index.js + var require_diacritics = __commonJS({ + "node_modules/diacritics/index.js"(exports2) { + exports2.remove = removeDiacritics2; + var replacementList = [ + { + base: " ", + chars: "\xA0" + }, + { + base: "0", + chars: "\u07C0" + }, + { + base: "A", + chars: "\u24B6\uFF21\xC0\xC1\xC2\u1EA6\u1EA4\u1EAA\u1EA8\xC3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\xC4\u01DE\u1EA2\xC5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F" + }, + { + base: "AA", + chars: "\uA732" + }, + { + base: "AE", + chars: "\xC6\u01FC\u01E2" + }, + { + base: "AO", + chars: "\uA734" + }, + { + base: "AU", + chars: "\uA736" + }, + { + base: "AV", + chars: "\uA738\uA73A" + }, + { + base: "AY", + chars: "\uA73C" + }, + { + base: "B", + chars: "\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0181" + }, + { + base: "C", + chars: "\u24B8\uFF23\uA73E\u1E08\u0106C\u0108\u010A\u010C\xC7\u0187\u023B" + }, + { + base: "D", + chars: "\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018A\u0189\u1D05\uA779" + }, + { + base: "Dh", + chars: "\xD0" + }, + { + base: "DZ", + chars: "\u01F1\u01C4" + }, + { + base: "Dz", + chars: "\u01F2\u01C5" + }, + { + base: "E", + chars: "\u025B\u24BA\uFF25\xC8\xC9\xCA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\xCB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E\u1D07" + }, + { + base: "F", + chars: "\uA77C\u24BB\uFF26\u1E1E\u0191\uA77B" + }, + { + base: "G", + chars: "\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E\u0262" + }, + { + base: "H", + chars: "\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D" + }, + { + base: "I", + chars: "\u24BE\uFF29\xCC\xCD\xCE\u0128\u012A\u012C\u0130\xCF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197" + }, + { + base: "J", + chars: "\u24BF\uFF2A\u0134\u0248\u0237" + }, + { + base: "K", + chars: "\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2" + }, + { + base: "L", + chars: "\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780" + }, + { + base: "LJ", + chars: "\u01C7" + }, + { + base: "Lj", + chars: "\u01C8" + }, + { + base: "M", + chars: "\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C\u03FB" + }, + { + base: "N", + chars: "\uA7A4\u0220\u24C3\uFF2E\u01F8\u0143\xD1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u019D\uA790\u1D0E" + }, + { + base: "NJ", + chars: "\u01CA" + }, + { + base: "Nj", + chars: "\u01CB" + }, + { + base: "O", + chars: "\u24C4\uFF2F\xD2\xD3\xD4\u1ED2\u1ED0\u1ED6\u1ED4\xD5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\xD6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\xD8\u01FE\u0186\u019F\uA74A\uA74C" + }, + { + base: "OE", + chars: "\u0152" + }, + { + base: "OI", + chars: "\u01A2" + }, + { + base: "OO", + chars: "\uA74E" + }, + { + base: "OU", + chars: "\u0222" + }, + { + base: "P", + chars: "\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754" + }, + { + base: "Q", + chars: "\u24C6\uFF31\uA756\uA758\u024A" + }, + { + base: "R", + chars: "\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782" + }, + { + base: "S", + chars: "\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784" + }, + { + base: "T", + chars: "\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786" + }, + { + base: "Th", + chars: "\xDE" + }, + { + base: "TZ", + chars: "\uA728" + }, + { + base: "U", + chars: "\u24CA\uFF35\xD9\xDA\xDB\u0168\u1E78\u016A\u1E7A\u016C\xDC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244" + }, + { + base: "V", + chars: "\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245" + }, + { + base: "VY", + chars: "\uA760" + }, + { + base: "W", + chars: "\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72" + }, + { + base: "X", + chars: "\u24CD\uFF38\u1E8A\u1E8C" + }, + { + base: "Y", + chars: "\u24CE\uFF39\u1EF2\xDD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE" + }, + { + base: "Z", + chars: "\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762" + }, + { + base: "a", + chars: "\u24D0\uFF41\u1E9A\xE0\xE1\xE2\u1EA7\u1EA5\u1EAB\u1EA9\xE3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\xE4\u01DF\u1EA3\xE5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250\u0251" + }, + { + base: "aa", + chars: "\uA733" + }, + { + base: "ae", + chars: "\xE6\u01FD\u01E3" + }, + { + base: "ao", + chars: "\uA735" + }, + { + base: "au", + chars: "\uA737" + }, + { + base: "av", + chars: "\uA739\uA73B" + }, + { + base: "ay", + chars: "\uA73D" + }, + { + base: "b", + chars: "\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253\u0182" + }, + { + base: "c", + chars: "\uFF43\u24D2\u0107\u0109\u010B\u010D\xE7\u1E09\u0188\u023C\uA73F\u2184" + }, + { + base: "d", + chars: "\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\u018B\u13E7\u0501\uA7AA" + }, + { + base: "dh", + chars: "\xF0" + }, + { + base: "dz", + chars: "\u01F3\u01C6" + }, + { + base: "e", + chars: "\u24D4\uFF45\xE8\xE9\xEA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\xEB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u01DD" + }, + { + base: "f", + chars: "\u24D5\uFF46\u1E1F\u0192" + }, + { + base: "ff", + chars: "\uFB00" + }, + { + base: "fi", + chars: "\uFB01" + }, + { + base: "fl", + chars: "\uFB02" + }, + { + base: "ffi", + chars: "\uFB03" + }, + { + base: "ffl", + chars: "\uFB04" + }, + { + base: "g", + chars: "\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\uA77F\u1D79" + }, + { + base: "h", + chars: "\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265" + }, + { + base: "hv", + chars: "\u0195" + }, + { + base: "i", + chars: "\u24D8\uFF49\xEC\xED\xEE\u0129\u012B\u012D\xEF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131" + }, + { + base: "j", + chars: "\u24D9\uFF4A\u0135\u01F0\u0249" + }, + { + base: "k", + chars: "\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3" + }, + { + base: "l", + chars: "\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747\u026D" + }, + { + base: "lj", + chars: "\u01C9" + }, + { + base: "m", + chars: "\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F" + }, + { + base: "n", + chars: "\u24DD\uFF4E\u01F9\u0144\xF1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5\u043B\u0509" + }, + { + base: "nj", + chars: "\u01CC" + }, + { + base: "o", + chars: "\u24DE\uFF4F\xF2\xF3\xF4\u1ED3\u1ED1\u1ED7\u1ED5\xF5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\xF6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\xF8\u01FF\uA74B\uA74D\u0275\u0254\u1D11" + }, + { + base: "oe", + chars: "\u0153" + }, + { + base: "oi", + chars: "\u01A3" + }, + { + base: "oo", + chars: "\uA74F" + }, + { + base: "ou", + chars: "\u0223" + }, + { + base: "p", + chars: "\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755\u03C1" + }, + { + base: "q", + chars: "\u24E0\uFF51\u024B\uA757\uA759" + }, + { + base: "r", + chars: "\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783" + }, + { + base: "s", + chars: "\u24E2\uFF53\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B\u0282" + }, + { + base: "ss", + chars: "\xDF" + }, + { + base: "t", + chars: "\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787" + }, + { + base: "th", + chars: "\xFE" + }, + { + base: "tz", + chars: "\uA729" + }, + { + base: "u", + chars: "\u24E4\uFF55\xF9\xFA\xFB\u0169\u1E79\u016B\u1E7B\u016D\xFC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289" + }, + { + base: "v", + chars: "\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C" + }, + { + base: "vy", + chars: "\uA761" + }, + { + base: "w", + chars: "\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73" + }, + { + base: "x", + chars: "\u24E7\uFF58\u1E8B\u1E8D" + }, + { + base: "y", + chars: "\u24E8\uFF59\u1EF3\xFD\u0177\u1EF9\u0233\u1E8F\xFF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF" + }, + { + base: "z", + chars: "\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763" + } + ]; + var diacriticsMap = {}; + for (i3 = 0; i3 < replacementList.length; i3 += 1) { + chars = replacementList[i3].chars; + for (j2 = 0; j2 < chars.length; j2 += 1) { + diacriticsMap[chars[j2]] = replacementList[i3].base; } - return title; - }, - over = "mouseenter.tooltip", - out = "mouseleave.tooltip", - placements = "top left bottom right".split(" "), - placement = d3.functor("top"); - - tooltip.title = function(_) { - if (arguments.length) { - title = d3.functor(_); - return tooltip; - } else { - return title; } - }; - - tooltip.html = function(_) { - if (arguments.length) { - html = d3.functor(_); - return tooltip; - } else { - return html; + var chars; + var j2; + var i3; + function removeDiacritics2(str) { + return str.replace(/[^\u0000-\u007e]/g, function(c2) { + return diacriticsMap[c2] || c2; + }); } - }; + exports2.replacementList = replacementList; + exports2.diacriticsMap = diacriticsMap; + } + }); - tooltip.placement = function(_) { - if (arguments.length) { - placement = d3.functor(_); - return tooltip; - } else { - return placement; + // node_modules/alif-toolkit/lib/isArabic.js + var require_isArabic = __commonJS({ + "node_modules/alif-toolkit/lib/isArabic.js"(exports2) { + "use strict"; + Object.defineProperty(exports2, "__esModule", { value: true }); + exports2.isArabic = isArabic; + exports2.isMath = isMath; + var arabicBlocks = [ + [1536, 1791], + // Arabic https://www.unicode.org/charts/PDF/U0600.pdf + [1872, 1919], + // supplement https://www.unicode.org/charts/PDF/U0750.pdf + [2208, 2303], + // Extended-A https://www.unicode.org/charts/PDF/U08A0.pdf + [64336, 65023], + // Presentation Forms-A https://www.unicode.org/charts/PDF/UFB50.pdf + [65136, 65279], + // Presentation Forms-B https://www.unicode.org/charts/PDF/UFE70.pdf + [69216, 69247], + // Rumi numerals https://www.unicode.org/charts/PDF/U10E60.pdf + [126064, 126143], + // Indic Siyaq numerals https://www.unicode.org/charts/PDF/U1EC70.pdf + [126464, 126719] + // Mathematical Alphabetic symbols https://www.unicode.org/charts/PDF/U1EE00.pdf + ]; + function isArabic(char) { + if (char.length > 1) { + throw new Error("isArabic works on only one-character strings"); + } + let code = char.charCodeAt(0); + for (let i3 = 0; i3 < arabicBlocks.length; i3++) { + let block2 = arabicBlocks[i3]; + if (code >= block2[0] && code <= block2[1]) { + return true; + } + } + return false; } - }; - - tooltip.show = function(selection) { - selection.each(show); - }; - - tooltip.hide = function(selection) { - selection.each(hide); - }; - - tooltip.toggle = function(selection) { - selection.each(toggle); - }; - - tooltip.destroy = function(selection) { - selection - .on(over, null) - .on(out, null) - .attr("title", function() { - return this.getAttribute("data-original-title") || this.getAttribute("title"); - }) - .attr("data-original-title", null) - .select(".tooltip") - .remove(); - }; - - function setup() { - var root = d3.select(this), - animate = animation.apply(this, arguments), - tip = root.append("div") - .attr("class", "tooltip"); - - if (animate) { - tip.classed("fade", true); + function isMath(char) { + if (char.length > 2) { + throw new Error("isMath works on only one-character strings"); + } + let code = char.charCodeAt(0); + return code >= 1632 && code <= 1644 || code >= 1776 && code <= 1785; } - - // TODO "inside" checks? - - tip.append("div") - .attr("class", "tooltip-arrow"); - tip.append("div") - .attr("class", "tooltip-inner"); - - var place = placement.apply(this, arguments); - tip.classed(place, true); - - root.on(over, show); - root.on(out, hide); } + }); - function show() { - var root = d3.select(this), - content = title.apply(this, arguments), - tip = root.select(".tooltip") - .classed("in", true), - markup = html.apply(this, arguments), - innercontent = tip.select(".tooltip-inner")[markup ? "html" : "text"](content), - place = placement.apply(this, arguments), - outer = getPosition(root.node()), - inner = getPosition(tip.node()), - pos; - - switch (place) { - case "top": - pos = {x: outer.x + (outer.w - inner.w) / 2, y: outer.y - inner.h}; - break; - case "right": - pos = {x: outer.x + outer.w, y: outer.y + (outer.h - inner.h) / 2}; - break; - case "left": - pos = {x: outer.x - inner.w, y: outer.y + (outer.h - inner.h) / 2}; - break; - case "bottom": - pos = {x: Math.max(0, outer.x + (outer.w - inner.w) / 2), y: outer.y + outer.h}; - break; - } - - tip.style(pos ? - {left: ~~pos.x + "px", top: ~~pos.y + "px"} : - {left: null, top: null}); - - this.tooltipVisible = true; - } - - function hide() { - d3.select(this).select(".tooltip") - .classed("in", false); - - this.tooltipVisible = false; - } - - function toggle() { - if (this.tooltipVisible) { - hide.apply(this, arguments); - } else { - show.apply(this, arguments); - } - } - - return tooltip; - }; - - function getPosition(node) { - var mode = d3.select(node).style('position'); - if (mode === 'absolute' || mode === 'static') { - return { - x: node.offsetLeft, - y: node.offsetTop, - w: node.offsetWidth, - h: node.offsetHeight - }; - } else { - return { - x: 0, - y: 0, - w: node.offsetWidth, - h: node.offsetHeight - }; - } - } - -})(this); -d3 = (function(){ - var d3 = {version: "3.3.8"}; // semver -d3.ascending = function(a, b) { - return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; -}; -d3.descending = function(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; -}; -d3.min = function(array, f) { - var i = -1, - n = array.length, - a, - b; - if (arguments.length === 1) { - while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined; - while (++i < n) if ((b = array[i]) != null && a > b) a = b; - } else { - while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b; - } - return a; -}; -d3.max = function(array, f) { - var i = -1, - n = array.length, - a, - b; - if (arguments.length === 1) { - while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined; - while (++i < n) if ((b = array[i]) != null && b > a) a = b; - } else { - while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b; - } - return a; -}; -d3.extent = function(array, f) { - var i = -1, - n = array.length, - a, - b, - c; - if (arguments.length === 1) { - while (++i < n && !((a = c = array[i]) != null && a <= a)) a = c = undefined; - while (++i < n) if ((b = array[i]) != null) { - if (a > b) a = b; - if (c < b) c = b; - } - } else { - while (++i < n && !((a = c = f.call(array, array[i], i)) != null && a <= a)) a = undefined; - while (++i < n) if ((b = f.call(array, array[i], i)) != null) { - if (a > b) a = b; - if (c < b) c = b; - } - } - return [a, c]; -}; -d3.sum = function(array, f) { - var s = 0, - n = array.length, - a, - i = -1; - - if (arguments.length === 1) { - while (++i < n) if (!isNaN(a = +array[i])) s += a; - } else { - while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a; - } - - return s; -}; -function d3_number(x) { - return x != null && !isNaN(x); -} - -d3.mean = function(array, f) { - var n = array.length, - a, - m = 0, - i = -1, - j = 0; - if (arguments.length === 1) { - while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j; - } else { - while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j; - } - return j ? m : undefined; -}; -// R-7 per -d3.quantile = function(values, p) { - var H = (values.length - 1) * p + 1, - h = Math.floor(H), - v = +values[h - 1], - e = H - h; - return e ? v + e * (values[h] - v) : v; -}; - -d3.median = function(array, f) { - if (arguments.length > 1) array = array.map(f); - array = array.filter(d3_number); - return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined; -}; -d3.bisector = function(f) { - return { - left: function(a, x, lo, hi) { - if (arguments.length < 3) lo = 0; - if (arguments.length < 4) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (f.call(a, a[mid], mid) < x) lo = mid + 1; - else hi = mid; - } - return lo; - }, - right: function(a, x, lo, hi) { - if (arguments.length < 3) lo = 0; - if (arguments.length < 4) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (x < f.call(a, a[mid], mid)) hi = mid; - else lo = mid + 1; - } - return lo; - } - }; -}; - -var d3_bisector = d3.bisector(function(d) { return d; }); -d3.bisectLeft = d3_bisector.left; -d3.bisect = d3.bisectRight = d3_bisector.right; -d3.shuffle = function(array) { - var m = array.length, t, i; - while (m) { - i = Math.random() * m-- | 0; - t = array[m], array[m] = array[i], array[i] = t; - } - return array; -}; -d3.permute = function(array, indexes) { - var i = indexes.length, permutes = new Array(i); - while (i--) permutes[i] = array[indexes[i]]; - return permutes; -}; -d3.pairs = function(array) { - var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n); - while (i < n) pairs[i] = [p0 = p1, p1 = array[++i]]; - return pairs; -}; - -d3.zip = function() { - if (!(n = arguments.length)) return []; - for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) { - for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) { - zip[j] = arguments[j][i]; - } - } - return zips; -}; - -function d3_zipLength(d) { - return d.length; -} - -d3.transpose = function(matrix) { - return d3.zip.apply(d3, matrix); -}; -d3.keys = function(map) { - var keys = []; - for (var key in map) keys.push(key); - return keys; -}; -d3.values = function(map) { - var values = []; - for (var key in map) values.push(map[key]); - return values; -}; -d3.entries = function(map) { - var entries = []; - for (var key in map) entries.push({key: key, value: map[key]}); - return entries; -}; -d3.merge = function(arrays) { - var n = arrays.length, - m, - i = -1, - j = 0, - merged, - array; - - while (++i < n) j += arrays[i].length; - merged = new Array(j); - - while (--n >= 0) { - array = arrays[n]; - m = array.length; - while (--m >= 0) { - merged[--j] = array[m]; - } - } - - return merged; -}; -var abs = Math.abs; - -d3.range = function(start, stop, step) { - if (arguments.length < 3) { - step = 1; - if (arguments.length < 2) { - stop = start; - start = 0; - } - } - if ((stop - start) / step === Infinity) throw new Error("infinite range"); - var range = [], - k = d3_range_integerScale(abs(step)), - i = -1, - j; - start *= k, stop *= k, step *= k; - if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); - else while ((j = start + step * ++i) < stop) range.push(j / k); - return range; -}; - -function d3_range_integerScale(x) { - var k = 1; - while (x * k % 1) k *= 10; - return k; -} -function d3_class(ctor, properties) { - try { - for (var key in properties) { - Object.defineProperty(ctor.prototype, key, { - value: properties[key], - enumerable: false - }); - } - } catch (e) { - ctor.prototype = properties; - } -} - -d3.map = function(object) { - var map = new d3_Map; - if (object instanceof d3_Map) object.forEach(function(key, value) { map.set(key, value); }); - else for (var key in object) map.set(key, object[key]); - return map; -}; - -function d3_Map() {} - -d3_class(d3_Map, { - has: function(key) { - return d3_map_prefix + key in this; - }, - get: function(key) { - return this[d3_map_prefix + key]; - }, - set: function(key, value) { - return this[d3_map_prefix + key] = value; - }, - remove: function(key) { - key = d3_map_prefix + key; - return key in this && delete this[key]; - }, - keys: function() { - var keys = []; - this.forEach(function(key) { keys.push(key); }); - return keys; - }, - values: function() { - var values = []; - this.forEach(function(key, value) { values.push(value); }); - return values; - }, - entries: function() { - var entries = []; - this.forEach(function(key, value) { entries.push({key: key, value: value}); }); - return entries; - }, - forEach: function(f) { - for (var key in this) { - if (key.charCodeAt(0) === d3_map_prefixCode) { - f.call(this, key.substring(1), this[key]); - } - } - } -}); - -var d3_map_prefix = "\0", // prevent collision with built-ins - d3_map_prefixCode = d3_map_prefix.charCodeAt(0); - -d3.nest = function() { - var nest = {}, - keys = [], - sortKeys = [], - sortValues, - rollup; - - function map(mapType, array, depth) { - if (depth >= keys.length) return rollup - ? rollup.call(nest, array) : (sortValues - ? array.sort(sortValues) - : array); - - var i = -1, - n = array.length, - key = keys[depth++], - keyValue, - object, - setter, - valuesByKey = new d3_Map, - values; - - while (++i < n) { - if (values = valuesByKey.get(keyValue = key(object = array[i]))) { - values.push(object); - } else { - valuesByKey.set(keyValue, [object]); - } - } - - if (mapType) { - object = mapType(); - setter = function(keyValue, values) { - object.set(keyValue, map(mapType, values, depth)); - }; - } else { - object = {}; - setter = function(keyValue, values) { - object[keyValue] = map(mapType, values, depth); + // node_modules/alif-toolkit/lib/unicode-arabic.js + var require_unicode_arabic = __commonJS({ + "node_modules/alif-toolkit/lib/unicode-arabic.js"(exports2) { + "use strict"; + Object.defineProperty(exports2, "__esModule", { value: true }); + var arabicReference = { + "alef": { + "normal": [ + "\u0627" + ], + "madda_above": { + "normal": [ + "\u0627\u0653", + "\u0622" + ], + "isolated": "\uFE81", + "final": "\uFE82" + }, + "hamza_above": { + "normal": [ + "\u0627\u0654", + "\u0623" + ], + "isolated": "\uFE83", + "final": "\uFE84" + }, + "hamza_below": { + "normal": [ + "\u0627\u0655", + "\u0625" + ], + "isolated": "\uFE87", + "final": "\uFE88" + }, + "wasla": { + "normal": "\u0671", + "isolated": "\uFB50", + "final": "\uFB51" + }, + "wavy_hamza_above": [ + "\u0672" + ], + "wavy_hamza_below": [ + "\u0627\u065F", + "\u0673" + ], + "high_hamza": [ + "\u0675", + "\u0627\u0674" + ], + "indic_two_above": [ + "\u0773" + ], + "indic_three_above": [ + "\u0774" + ], + "fathatan": { + "normal": [ + "\u0627\u064B" + ], + "final": "\uFD3C", + "isolated": "\uFD3D" + }, + "isolated": "\uFE8D", + "final": "\uFE8E" + }, + "beh": { + "normal": [ + "\u0628" + ], + "dotless": [ + "\u066E" + ], + "three_dots_horizontally_below": [ + "\u0750" + ], + "dot_below_three_dots_above": [ + "\u0751" + ], + "three_dots_pointing_upwards_below": [ + "\u0752" + ], + "three_dots_pointing_upwards_below_two_dots_above": [ + "\u0753" + ], + "two_dots_below_dot_above": [ + "\u0754" + ], + "inverted_small_v_below": [ + "\u0755" + ], + "small_v": [ + "\u0756" + ], + "small_v_below": [ + "\u08A0" + ], + "hamza_above": [ + "\u08A1" + ], + "small_meem_above": [ + "\u08B6" + ], + "isolated": "\uFE8F", + "final": "\uFE90", + "initial": "\uFE91", + "medial": "\uFE92" + }, + "teh marbuta": { + "normal": [ + "\u0629" + ], + "isolated": "\uFE93", + "final": "\uFE94" + }, + "teh": { + "normal": [ + "\u062A" + ], + "ring": [ + "\u067C" + ], + "three_dots_above_downwards": [ + "\u067D" + ], + "small_teh_above": [ + "\u08B8" + ], + "isolated": "\uFE95", + "final": "\uFE96", + "initial": "\uFE97", + "medial": "\uFE98" + }, + "theh": { + "normal": [ + "\u062B" + ], + "isolated": "\uFE99", + "final": "\uFE9A", + "initial": "\uFE9B", + "medial": "\uFE9C" + }, + "jeem": { + "normal": [ + "\u062C" + ], + "two_dots_above": [ + "\u08A2" + ], + "isolated": "\uFE9D", + "final": "\uFE9E", + "initial": "\uFE9F", + "medial": "\uFEA0" + }, + "hah": { + "normal": [ + "\u062D" + ], + "hamza_above": [ + "\u0681" + ], + "two_dots_vertical_above": [ + "\u0682" + ], + "three_dots_above": [ + "\u0685" + ], + "two_dots_above": [ + "\u0757" + ], + "three_dots_pointing_upwards_below": [ + "\u0758" + ], + "small_tah_below": [ + "\u076E" + ], + "small_tah_two_dots": [ + "\u076F" + ], + "small_tah_above": [ + "\u0772" + ], + "indic_four_below": [ + "\u077C" + ], + "isolated": "\uFEA1", + "final": "\uFEA2", + "initial": "\uFEA3", + "medial": "\uFEA4" + }, + "khah": { + "normal": [ + "\u062E" + ], + "isolated": "\uFEA5", + "final": "\uFEA6", + "initial": "\uFEA7", + "medial": "\uFEA8" + }, + "dal": { + "normal": [ + "\u062F" + ], + "ring": [ + "\u0689" + ], + "dot_below": [ + "\u068A" + ], + "dot_below_small_tah": [ + "\u068B" + ], + "three_dots_above_downwards": [ + "\u068F" + ], + "four_dots_above": [ + "\u0690" + ], + "inverted_v": [ + "\u06EE" + ], + "two_dots_vertically_below_small_tah": [ + "\u0759" + ], + "inverted_small_v_below": [ + "\u075A" + ], + "three_dots_below": [ + "\u08AE" + ], + "isolated": "\uFEA9", + "final": "\uFEAA" + }, + "thal": { + "normal": [ + "\u0630" + ], + "isolated": "\uFEAB", + "final": "\uFEAC" + }, + "reh": { + "normal": [ + "\u0631" + ], + "small_v": [ + "\u0692" + ], + "ring": [ + "\u0693" + ], + "dot_below": [ + "\u0694" + ], + "small_v_below": [ + "\u0695" + ], + "dot_below_dot_above": [ + "\u0696" + ], + "two_dots_above": [ + "\u0697" + ], + "four_dots_above": [ + "\u0699" + ], + "inverted_v": [ + "\u06EF" + ], + "stroke": [ + "\u075B" + ], + "two_dots_vertically_above": [ + "\u076B" + ], + "hamza_above": [ + "\u076C" + ], + "small_tah_two_dots": [ + "\u0771" + ], + "loop": [ + "\u08AA" + ], + "small_noon_above": [ + "\u08B9" + ], + "isolated": "\uFEAD", + "final": "\uFEAE" + }, + "zain": { + "normal": [ + "\u0632" + ], + "inverted_v_above": [ + "\u08B2" + ], + "isolated": "\uFEAF", + "final": "\uFEB0" + }, + "seen": { + "normal": [ + "\u0633" + ], + "dot_below_dot_above": [ + "\u069A" + ], + "three_dots_below": [ + "\u069B" + ], + "three_dots_below_three_dots_above": [ + "\u069C" + ], + "four_dots_above": [ + "\u075C" + ], + "two_dots_vertically_above": [ + "\u076D" + ], + "small_tah_two_dots": [ + "\u0770" + ], + "indic_four_above": [ + "\u077D" + ], + "inverted_v": [ + "\u077E" + ], + "isolated": "\uFEB1", + "final": "\uFEB2", + "initial": "\uFEB3", + "medial": "\uFEB4" + }, + "sheen": { + "normal": [ + "\u0634" + ], + "dot_below": [ + "\u06FA" + ], + "isolated": "\uFEB5", + "final": "\uFEB6", + "initial": "\uFEB7", + "medial": "\uFEB8" + }, + "sad": { + "normal": [ + "\u0635" + ], + "two_dots_below": [ + "\u069D" + ], + "three_dots_above": [ + "\u069E" + ], + "three_dots_below": [ + "\u08AF" + ], + "isolated": "\uFEB9", + "final": "\uFEBA", + "initial": "\uFEBB", + "medial": "\uFEBC" + }, + "dad": { + "normal": [ + "\u0636" + ], + "dot_below": [ + "\u06FB" + ], + "isolated": "\uFEBD", + "final": "\uFEBE", + "initial": "\uFEBF", + "medial": "\uFEC0" + }, + "tah": { + "normal": [ + "\u0637" + ], + "three_dots_above": [ + "\u069F" + ], + "two_dots_above": [ + "\u08A3" + ], + "isolated": "\uFEC1", + "final": "\uFEC2", + "initial": "\uFEC3", + "medial": "\uFEC4" + }, + "zah": { + "normal": [ + "\u0638" + ], + "isolated": "\uFEC5", + "final": "\uFEC6", + "initial": "\uFEC7", + "medial": "\uFEC8" + }, + "ain": { + "normal": [ + "\u0639" + ], + "three_dots_above": [ + "\u06A0" + ], + "two_dots_above": [ + "\u075D" + ], + "three_dots_pointing_downwards_above": [ + "\u075E" + ], + "two_dots_vertically_above": [ + "\u075F" + ], + "three_dots_below": [ + "\u08B3" + ], + "isolated": "\uFEC9", + "final": "\uFECA", + "initial": "\uFECB", + "medial": "\uFECC" + }, + "ghain": { + "normal": [ + "\u063A" + ], + "dot_below": [ + "\u06FC" + ], + "isolated": "\uFECD", + "final": "\uFECE", + "initial": "\uFECF", + "medial": "\uFED0" + }, + "feh": { + "normal": [ + "\u0641" + ], + "dotless": [ + "\u06A1" + ], + "dot_moved_below": [ + "\u06A2" + ], + "dot_below": [ + "\u06A3" + ], + "three_dots_below": [ + "\u06A5" + ], + "two_dots_below": [ + "\u0760" + ], + "three_dots_pointing_upwards_below": [ + "\u0761" + ], + "dot_below_three_dots_above": [ + "\u08A4" + ], + "isolated": "\uFED1", + "final": "\uFED2", + "initial": "\uFED3", + "medial": "\uFED4" + }, + "qaf": { + "normal": [ + "\u0642" + ], + "dotless": [ + "\u066F" + ], + "dot_above": [ + "\u06A7" + ], + "three_dots_above": [ + "\u06A8" + ], + "dot_below": [ + "\u08A5" + ], + "isolated": "\uFED5", + "final": "\uFED6", + "initial": "\uFED7", + "medial": "\uFED8" + }, + "kaf": { + "normal": [ + "\u0643" + ], + "swash": [ + "\u06AA" + ], + "ring": [ + "\u06AB" + ], + "dot_above": [ + "\u06AC" + ], + "three_dots_below": [ + "\u06AE" + ], + "two_dots_above": [ + "\u077F" + ], + "dot_below": [ + "\u08B4" + ], + "isolated": "\uFED9", + "final": "\uFEDA", + "initial": "\uFEDB", + "medial": "\uFEDC" + }, + "lam": { + "normal": [ + "\u0644" + ], + "small_v": [ + "\u06B5" + ], + "dot_above": [ + "\u06B6" + ], + "three_dots_above": [ + "\u06B7" + ], + "three_dots_below": [ + "\u06B8" + ], + "bar": [ + "\u076A" + ], + "double_bar": [ + "\u08A6" + ], + "isolated": "\uFEDD", + "final": "\uFEDE", + "initial": "\uFEDF", + "medial": "\uFEE0" + }, + "meem": { + "normal": [ + "\u0645" + ], + "dot_above": [ + "\u0765" + ], + "dot_below": [ + "\u0766" + ], + "three_dots_above": [ + "\u08A7" + ], + "isolated": "\uFEE1", + "final": "\uFEE2", + "initial": "\uFEE3", + "medial": "\uFEE4" + }, + "noon": { + "normal": [ + "\u0646" + ], + "dot_below": [ + "\u06B9" + ], + "ring": [ + "\u06BC" + ], + "three_dots_above": [ + "\u06BD" + ], + "two_dots_below": [ + "\u0767" + ], + "small_tah": [ + "\u0768" + ], + "small_v": [ + "\u0769" + ], + "isolated": "\uFEE5", + "final": "\uFEE6", + "initial": "\uFEE7", + "medial": "\uFEE8" + }, + "heh": { + "normal": [ + "\u0647" + ], + "isolated": "\uFEE9", + "final": "\uFEEA", + "initial": "\uFEEB", + "medial": "\uFEEC" + }, + "waw": { + "normal": [ + "\u0648" + ], + "hamza_above": { + "normal": [ + "\u0624", + "\u0648\u0654" + ], + "isolated": "\uFE85", + "final": "\uFE86" + }, + "high_hamza": [ + "\u0676", + "\u0648\u0674" + ], + "ring": [ + "\u06C4" + ], + "two_dots_above": [ + "\u06CA" + ], + "dot_above": [ + "\u06CF" + ], + "indic_two_above": [ + "\u0778" + ], + "indic_three_above": [ + "\u0779" + ], + "dot_within": [ + "\u08AB" + ], + "isolated": "\uFEED", + "final": "\uFEEE" + }, + "alef_maksura": { + "normal": [ + "\u0649" + ], + "hamza_above": [ + "\u0626", + "\u064A\u0654" + ], + "initial": "\uFBE8", + "medial": "\uFBE9", + "isolated": "\uFEEF", + "final": "\uFEF0" + }, + "yeh": { + "normal": [ + "\u064A" + ], + "hamza_above": { + "normal": [ + "\u0626", + "\u0649\u0654" + ], + "isolated": "\uFE89", + "final": "\uFE8A", + "initial": "\uFE8B", + "medial": "\uFE8C" + }, + "two_dots_below_hamza_above": [ + "\u08A8" + ], + "high_hamza": [ + "\u0678", + "\u064A\u0674" + ], + "tail": [ + "\u06CD" + ], + "small_v": [ + "\u06CE" + ], + "three_dots_below": [ + "\u06D1" + ], + "two_dots_below_dot_above": [ + "\u08A9" + ], + "two_dots_below_small_noon_above": [ + "\u08BA" + ], + "isolated": "\uFEF1", + "final": "\uFEF2", + "initial": "\uFEF3", + "medial": "\uFEF4" + }, + "tteh": { + "normal": [ + "\u0679" + ], + "isolated": "\uFB66", + "final": "\uFB67", + "initial": "\uFB68", + "medial": "\uFB69" + }, + "tteheh": { + "normal": [ + "\u067A" + ], + "isolated": "\uFB5E", + "final": "\uFB5F", + "initial": "\uFB60", + "medial": "\uFB61" + }, + "beeh": { + "normal": [ + "\u067B" + ], + "isolated": "\uFB52", + "final": "\uFB53", + "initial": "\uFB54", + "medial": "\uFB55" + }, + "peh": { + "normal": [ + "\u067E" + ], + "small_meem_above": [ + "\u08B7" + ], + "isolated": "\uFB56", + "final": "\uFB57", + "initial": "\uFB58", + "medial": "\uFB59" + }, + "teheh": { + "normal": [ + "\u067F" + ], + "isolated": "\uFB62", + "final": "\uFB63", + "initial": "\uFB64", + "medial": "\uFB65" + }, + "beheh": { + "normal": [ + "\u0680" + ], + "isolated": "\uFB5A", + "final": "\uFB5B", + "initial": "\uFB5C", + "medial": "\uFB5D" + }, + "nyeh": { + "normal": [ + "\u0683" + ], + "isolated": "\uFB76", + "final": "\uFB77", + "initial": "\uFB78", + "medial": "\uFB79" + }, + "dyeh": { + "normal": [ + "\u0684" + ], + "isolated": "\uFB72", + "final": "\uFB73", + "initial": "\uFB74", + "medial": "\uFB75" + }, + "tcheh": { + "normal": [ + "\u0686" + ], + "dot_above": [ + "\u06BF" + ], + "isolated": "\uFB7A", + "final": "\uFB7B", + "initial": "\uFB7C", + "medial": "\uFB7D" + }, + "tcheheh": { + "normal": [ + "\u0687" + ], + "isolated": "\uFB7E", + "final": "\uFB7F", + "initial": "\uFB80", + "medial": "\uFB81" + }, + "ddal": { + "normal": [ + "\u0688" + ], + "isolated": "\uFB88", + "final": "\uFB89" + }, + "dahal": { + "normal": [ + "\u068C" + ], + "isolated": "\uFB84", + "final": "\uFB85" + }, + "ddahal": { + "normal": [ + "\u068D" + ], + "isolated": "\uFB82", + "final": "\uFB83" + }, + "dul": { + "normal": [ + "\u068F", + "\u068E" + ], + "isolated": "\uFB86", + "final": "\uFB87" + }, + "rreh": { + "normal": [ + "\u0691" + ], + "isolated": "\uFB8C", + "final": "\uFB8D" + }, + "jeh": { + "normal": [ + "\u0698" + ], + "isolated": "\uFB8A", + "final": "\uFB8B" + }, + "veh": { + "normal": [ + "\u06A4" + ], + "isolated": "\uFB6A", + "final": "\uFB6B", + "initial": "\uFB6C", + "medial": "\uFB6D" + }, + "peheh": { + "normal": [ + "\u06A6" + ], + "isolated": "\uFB6E", + "final": "\uFB6F", + "initial": "\uFB70", + "medial": "\uFB71" + }, + "keheh": { + "normal": [ + "\u06A9" + ], + "dot_above": [ + "\u0762" + ], + "three_dots_above": [ + "\u0763" + ], + "three_dots_pointing_upwards_below": [ + "\u0764" + ], + "isolated": "\uFB8E", + "final": "\uFB8F", + "initial": "\uFB90", + "medial": "\uFB91" + }, + "ng": { + "normal": [ + "\u06AD" + ], + "isolated": "\uFBD3", + "final": "\uFBD4", + "initial": "\uFBD5", + "medial": "\uFBD6" + }, + "gaf": { + "normal": [ + "\u06AF" + ], + "ring": [ + "\u06B0" + ], + "two_dots_below": [ + "\u06B2" + ], + "three_dots_above": [ + "\u06B4" + ], + "inverted_stroke": [ + "\u08B0" + ], + "isolated": "\uFB92", + "final": "\uFB93", + "initial": "\uFB94", + "medial": "\uFB95" + }, + "ngoeh": { + "normal": [ + "\u06B1" + ], + "isolated": "\uFB9A", + "final": "\uFB9B", + "initial": "\uFB9C", + "medial": "\uFB9D" + }, + "gueh": { + "normal": [ + "\u06B3" + ], + "isolated": "\uFB96", + "final": "\uFB97", + "initial": "\uFB98", + "medial": "\uFB99" + }, + "noon ghunna": { + "normal": [ + "\u06BA" + ], + "isolated": "\uFB9E", + "final": "\uFB9F" + }, + "rnoon": { + "normal": [ + "\u06BB" + ], + "isolated": "\uFBA0", + "final": "\uFBA1", + "initial": "\uFBA2", + "medial": "\uFBA3" + }, + "heh doachashmee": { + "normal": [ + "\u06BE" + ], + "isolated": "\uFBAA", + "final": "\uFBAB", + "initial": "\uFBAC", + "medial": "\uFBAD" + }, + "heh goal": { + "normal": [ + "\u06C1" + ], + "hamza_above": [ + "\u06C1\u0654", + "\u06C2" + ], + "isolated": "\uFBA6", + "final": "\uFBA7", + "initial": "\uFBA8", + "medial": "\uFBA9" + }, + "teh marbuta goal": { + "normal": [ + "\u06C3" + ] + }, + "kirghiz oe": { + "normal": [ + "\u06C5" + ], + "isolated": "\uFBE0", + "final": "\uFBE1" + }, + "oe": { + "normal": [ + "\u06C6" + ], + "isolated": "\uFBD9", + "final": "\uFBDA" + }, + "u": { + "normal": [ + "\u06C7" + ], + "hamza_above": { + "normal": [ + "\u0677", + "\u06C7\u0674" + ], + "isolated": "\uFBDD" + }, + "isolated": "\uFBD7", + "final": "\uFBD8" + }, + "yu": { + "normal": [ + "\u06C8" + ], + "isolated": "\uFBDB", + "final": "\uFBDC" + }, + "kirghiz yu": { + "normal": [ + "\u06C9" + ], + "isolated": "\uFBE2", + "final": "\uFBE3" + }, + "ve": { + "normal": [ + "\u06CB" + ], + "isolated": "\uFBDE", + "final": "\uFBDF" + }, + "farsi yeh": { + "normal": [ + "\u06CC" + ], + "indic_two_above": [ + "\u0775" + ], + "indic_three_above": [ + "\u0776" + ], + "indic_four_above": [ + "\u0777" + ], + "isolated": "\uFBFC", + "final": "\uFBFD", + "initial": "\uFBFE", + "medial": "\uFBFF" + }, + "e": { + "normal": [ + "\u06D0" + ], + "isolated": "\uFBE4", + "final": "\uFBE5", + "initial": "\uFBE6", + "medial": "\uFBE7" + }, + "yeh barree": { + "normal": [ + "\u06D2" + ], + "hamza_above": { + "normal": [ + "\u06D2\u0654", + "\u06D3" + ], + "isolated": "\uFBB0", + "final": "\uFBB1" + }, + "indic_two_above": [ + "\u077A" + ], + "indic_three_above": [ + "\u077B" + ], + "isolated": "\uFBAE", + "final": "\uFBAF" + }, + "ae": { + "normal": [ + "\u06D5" + ], + "isolated": "\u06D5", + "final": "\uFEEA", + "yeh_above": { + "normal": [ + "\u06C0", + "\u06D5\u0654" + ], + "isolated": "\uFBA4", + "final": "\uFBA5" + } + }, + "rohingya yeh": { + "normal": [ + "\u08AC" + ] + }, + "low alef": { + "normal": [ + "\u08AD" + ] + }, + "straight waw": { + "normal": [ + "\u08B1" + ] + }, + "african feh": { + "normal": [ + "\u08BB" + ] + }, + "african qaf": { + "normal": [ + "\u08BC" + ] + }, + "african noon": { + "normal": [ + "\u08BD" + ] + } }; + exports2.default = arabicReference; } + }); - valuesByKey.forEach(setter); - return object; - } - - function entries(map, depth) { - if (depth >= keys.length) return map; - - var array = [], - sortKey = sortKeys[depth++]; - - map.forEach(function(key, keyMap) { - array.push({key: key, values: entries(keyMap, depth)}); - }); - - return sortKey - ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) - : array; - } - - nest.map = function(array, mapType) { - return map(mapType, array, 0); - }; - - nest.entries = function(array) { - return entries(map(d3.map, array, 0), 0); - }; - - nest.key = function(d) { - keys.push(d); - return nest; - }; - - // Specifies the order for the most-recently specified key. - // Note: only applies to entries. Map keys are unordered! - nest.sortKeys = function(order) { - sortKeys[keys.length - 1] = order; - return nest; - }; - - // Specifies the order for leaf values. - // Applies to both maps and entries array. - nest.sortValues = function(order) { - sortValues = order; - return nest; - }; - - nest.rollup = function(f) { - rollup = f; - return nest; - }; - - return nest; -}; - -d3.set = function(array) { - var set = new d3_Set; - if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]); - return set; -}; - -function d3_Set() {} - -d3_class(d3_Set, { - has: function(value) { - return d3_map_prefix + value in this; - }, - add: function(value) { - this[d3_map_prefix + value] = true; - return value; - }, - remove: function(value) { - value = d3_map_prefix + value; - return value in this && delete this[value]; - }, - values: function() { - var values = []; - this.forEach(function(value) { - values.push(value); - }); - return values; - }, - forEach: function(f) { - for (var value in this) { - if (value.charCodeAt(0) === d3_map_prefixCode) { - f.call(this, value.substring(1)); - } - } - } -}); -d3.behavior = {}; -var d3_arraySlice = [].slice, - d3_array = function(list) { return d3_arraySlice.call(list); }; // conversion for NodeLists - -var d3_document = document, - d3_documentElement = d3_document.documentElement, - d3_window = window; - -// Redefine d3_array if the browser doesn’t support slice-based conversion. -try { - d3_array(d3_documentElement.childNodes)[0].nodeType; -} catch(e) { - d3_array = function(list) { - var i = list.length, array = new Array(i); - while (i--) array[i] = list[i]; - return array; - }; -} -// Copies a variable number of methods from source to target. -d3.rebind = function(target, source) { - var i = 1, n = arguments.length, method; - while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]); - return target; -}; - -// Method is assumed to be a standard D3 getter-setter: -// If passed with no arguments, gets the value. -// If passed with arguments, sets the value and returns the target. -function d3_rebind(target, source, method) { - return function() { - var value = method.apply(source, arguments); - return value === source ? target : value; - }; -} - -function d3_vendorSymbol(object, name) { - if (name in object) return name; - name = name.charAt(0).toUpperCase() + name.substring(1); - for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) { - var prefixName = d3_vendorPrefixes[i] + name; - if (prefixName in object) return prefixName; - } -} - -var d3_vendorPrefixes = ["webkit", "ms", "moz", "Moz", "o", "O"]; -function d3_noop() {} - -d3.dispatch = function() { - var dispatch = new d3_dispatch, - i = -1, - n = arguments.length; - while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch); - return dispatch; -}; - -function d3_dispatch() {} - -d3_dispatch.prototype.on = function(type, listener) { - var i = type.indexOf("."), - name = ""; - - // Extract optional namespace, e.g., "click.foo" - if (i >= 0) { - name = type.substring(i + 1); - type = type.substring(0, i); - } - - if (type) return arguments.length < 2 - ? this[type].on(name) - : this[type].on(name, listener); - - if (arguments.length === 2) { - if (listener == null) for (type in this) { - if (this.hasOwnProperty(type)) this[type].on(name, null); - } - return this; - } -}; - -function d3_dispatch_event(dispatch) { - var listeners = [], - listenerByName = new d3_Map; - - function event() { - var z = listeners, // defensive reference - i = -1, - n = z.length, - l; - while (++i < n) if (l = z[i].on) l.apply(this, arguments); - return dispatch; - } - - event.on = function(name, listener) { - var l = listenerByName.get(name), - i; - - // return the current listener, if any - if (arguments.length < 2) return l && l.on; - - // remove the old listener, if any (with copy-on-write) - if (l) { - l.on = null; - listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1)); - listenerByName.remove(name); - } - - // add the new listener, if any - if (listener) listeners.push(listenerByName.set(name, {on: listener})); - - return dispatch; - }; - - return event; -} - -d3.event = null; - -function d3_eventPreventDefault() { - d3.event.preventDefault(); -} - -function d3_eventCancel() { - d3.event.preventDefault(); - d3.event.stopPropagation(); -} - -function d3_eventSource() { - var e = d3.event, s; - while (s = e.sourceEvent) e = s; - return e; -} - -// Like d3.dispatch, but for custom events abstracting native UI events. These -// events have a target component (such as a brush), a target element (such as -// the svg:g element containing the brush) and the standard arguments `d` (the -// target element's data) and `i` (the selection index of the target element). -function d3_eventDispatch(target) { - var dispatch = new d3_dispatch, - i = 0, - n = arguments.length; - - while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch); - - // Creates a dispatch context for the specified `thiz` (typically, the target - // DOM element that received the source event) and `argumentz` (typically, the - // data `d` and index `i` of the target element). The returned function can be - // used to dispatch an event to any registered listeners; the function takes a - // single argument as input, being the event to dispatch. The event must have - // a "type" attribute which corresponds to a type registered in the - // constructor. This context will automatically populate the "sourceEvent" and - // "target" attributes of the event, as well as setting the `d3.event` global - // for the duration of the notification. - dispatch.of = function(thiz, argumentz) { - return function(e1) { - try { - var e0 = - e1.sourceEvent = d3.event; - e1.target = target; - d3.event = e1; - dispatch[e1.type].apply(thiz, argumentz); - } finally { - d3.event = e0; - } - }; - }; - - return dispatch; -} -d3.requote = function(s) { - return s.replace(d3_requote_re, "\\$&"); -}; - -var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g; -var d3_subclass = {}.__proto__? - -// Until ECMAScript supports array subclassing, prototype injection works well. -function(object, prototype) { - object.__proto__ = prototype; -}: - -// And if your browser doesn't support __proto__, we'll use direct extension. -function(object, prototype) { - for (var property in prototype) object[property] = prototype[property]; -}; - -function d3_selection(groups) { - d3_subclass(groups, d3_selectionPrototype); - return groups; -} - -var d3_select = function(s, n) { return n.querySelector(s); }, - d3_selectAll = function(s, n) { return n.querySelectorAll(s); }, - d3_selectMatcher = d3_documentElement[d3_vendorSymbol(d3_documentElement, "matchesSelector")], - d3_selectMatches = function(n, s) { return d3_selectMatcher.call(n, s); }; - -// Prefer Sizzle, if available. -if (typeof Sizzle === "function") { - d3_select = function(s, n) { return Sizzle(s, n)[0] || null; }; - d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); }; - d3_selectMatches = Sizzle.matchesSelector; -} - -d3.selection = function() { - return d3_selectionRoot; -}; - -var d3_selectionPrototype = d3.selection.prototype = []; - - -d3_selectionPrototype.select = function(selector) { - var subgroups = [], - subgroup, - subnode, - group, - node; - - selector = d3_selection_selector(selector); - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - subgroup.parentNode = (group = this[j]).parentNode; - for (var i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - subgroup.push(subnode = selector.call(node, node.__data__, i, j)); - if (subnode && "__data__" in node) subnode.__data__ = node.__data__; - } else { - subgroup.push(null); - } - } - } - - return d3_selection(subgroups); -}; - -function d3_selection_selector(selector) { - return typeof selector === "function" ? selector : function() { - return d3_select(selector, this); - }; -} - -d3_selectionPrototype.selectAll = function(selector) { - var subgroups = [], - subgroup, - node; - - selector = d3_selection_selectorAll(selector); - - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j))); - subgroup.parentNode = node; - } - } - } - - return d3_selection(subgroups); -}; - -function d3_selection_selectorAll(selector) { - return typeof selector === "function" ? selector : function() { - return d3_selectAll(selector, this); - }; -} -var d3_nsPrefix = { - svg: "http://www.w3.org/2000/svg", - xhtml: "http://www.w3.org/1999/xhtml", - xlink: "http://www.w3.org/1999/xlink", - xml: "http://www.w3.org/XML/1998/namespace", - xmlns: "http://www.w3.org/2000/xmlns/" -}; - -d3.ns = { - prefix: d3_nsPrefix, - qualify: function(name) { - var i = name.indexOf(":"), - prefix = name; - if (i >= 0) { - prefix = name.substring(0, i); - name = name.substring(i + 1); - } - return d3_nsPrefix.hasOwnProperty(prefix) - ? {space: d3_nsPrefix[prefix], local: name} - : name; - } -}; - -d3_selectionPrototype.attr = function(name, value) { - if (arguments.length < 2) { - - // For attr(string), return the attribute value for the first node. - if (typeof name === "string") { - var node = this.node(); - name = d3.ns.qualify(name); - return name.local - ? node.getAttributeNS(name.space, name.local) - : node.getAttribute(name); - } - - // For attr(object), the object specifies the names and values of the - // attributes to set or remove. The values may be functions that are - // evaluated for each element. - for (value in name) this.each(d3_selection_attr(value, name[value])); - return this; - } - - return this.each(d3_selection_attr(name, value)); -}; - -function d3_selection_attr(name, value) { - name = d3.ns.qualify(name); - - // For attr(string, null), remove the attribute with the specified name. - function attrNull() { - this.removeAttribute(name); - } - function attrNullNS() { - this.removeAttributeNS(name.space, name.local); - } - - // For attr(string, string), set the attribute with the specified name. - function attrConstant() { - this.setAttribute(name, value); - } - function attrConstantNS() { - this.setAttributeNS(name.space, name.local, value); - } - - // For attr(string, function), evaluate the function for each element, and set - // or remove the attribute as appropriate. - function attrFunction() { - var x = value.apply(this, arguments); - if (x == null) this.removeAttribute(name); - else this.setAttribute(name, x); - } - function attrFunctionNS() { - var x = value.apply(this, arguments); - if (x == null) this.removeAttributeNS(name.space, name.local); - else this.setAttributeNS(name.space, name.local, x); - } - - return value == null - ? (name.local ? attrNullNS : attrNull) : (typeof value === "function" - ? (name.local ? attrFunctionNS : attrFunction) - : (name.local ? attrConstantNS : attrConstant)); -} -function d3_collapse(s) { - return s.trim().replace(/\s+/g, " "); -} - -d3_selectionPrototype.classed = function(name, value) { - if (arguments.length < 2) { - - // For classed(string), return true only if the first node has the specified - // class or classes. Note that even if the browser supports DOMTokenList, it - // probably doesn't support it on SVG elements (which can be animated). - if (typeof name === "string") { - var node = this.node(), - n = (name = name.trim().split(/^|\s+/g)).length, - i = -1; - if (value = node.classList) { - while (++i < n) if (!value.contains(name[i])) return false; - } else { - value = node.getAttribute("class"); - while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false; - } - return true; - } - - // For classed(object), the object specifies the names of classes to add or - // remove. The values may be functions that are evaluated for each element. - for (value in name) this.each(d3_selection_classed(value, name[value])); - return this; - } - - // Otherwise, both a name and a value are specified, and are handled as below. - return this.each(d3_selection_classed(name, value)); -}; - -function d3_selection_classedRe(name) { - return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g"); -} - -// Multiple class names are allowed (e.g., "foo bar"). -function d3_selection_classed(name, value) { - name = name.trim().split(/\s+/).map(d3_selection_classedName); - var n = name.length; - - function classedConstant() { - var i = -1; - while (++i < n) name[i](this, value); - } - - // When the value is a function, the function is still evaluated only once per - // element even if there are multiple class names. - function classedFunction() { - var i = -1, x = value.apply(this, arguments); - while (++i < n) name[i](this, x); - } - - return typeof value === "function" - ? classedFunction - : classedConstant; -} - -function d3_selection_classedName(name) { - var re = d3_selection_classedRe(name); - return function(node, value) { - if (c = node.classList) return value ? c.add(name) : c.remove(name); - var c = node.getAttribute("class") || ""; - if (value) { - re.lastIndex = 0; - if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name)); - } else { - node.setAttribute("class", d3_collapse(c.replace(re, " "))); - } - }; -} - -d3_selectionPrototype.style = function(name, value, priority) { - var n = arguments.length; - if (n < 3) { - - // For style(object) or style(object, string), the object specifies the - // names and values of the attributes to set or remove. The values may be - // functions that are evaluated for each element. The optional string - // specifies the priority. - if (typeof name !== "string") { - if (n < 2) value = ""; - for (priority in name) this.each(d3_selection_style(priority, name[priority], value)); - return this; - } - - // For style(string), return the computed style value for the first node. - if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name); - - // For style(string, string) or style(string, function), use the default - // priority. The priority is ignored for style(string, null). - priority = ""; - } - - // Otherwise, a name, value and priority are specified, and handled as below. - return this.each(d3_selection_style(name, value, priority)); -}; - -function d3_selection_style(name, value, priority) { - - // For style(name, null) or style(name, null, priority), remove the style - // property with the specified name. The priority is ignored. - function styleNull() { - this.style.removeProperty(name); - } - - // For style(name, string) or style(name, string, priority), set the style - // property with the specified name, using the specified priority. - function styleConstant() { - this.style.setProperty(name, value, priority); - } - - // For style(name, function) or style(name, function, priority), evaluate the - // function for each element, and set or remove the style property as - // appropriate. When setting, use the specified priority. - function styleFunction() { - var x = value.apply(this, arguments); - if (x == null) this.style.removeProperty(name); - else this.style.setProperty(name, x, priority); - } - - return value == null - ? styleNull : (typeof value === "function" - ? styleFunction : styleConstant); -} - -d3_selectionPrototype.property = function(name, value) { - if (arguments.length < 2) { - - // For property(string), return the property value for the first node. - if (typeof name === "string") return this.node()[name]; - - // For property(object), the object specifies the names and values of the - // properties to set or remove. The values may be functions that are - // evaluated for each element. - for (value in name) this.each(d3_selection_property(value, name[value])); - return this; - } - - // Otherwise, both a name and a value are specified, and are handled as below. - return this.each(d3_selection_property(name, value)); -}; - -function d3_selection_property(name, value) { - - // For property(name, null), remove the property with the specified name. - function propertyNull() { - delete this[name]; - } - - // For property(name, string), set the property with the specified name. - function propertyConstant() { - this[name] = value; - } - - // For property(name, function), evaluate the function for each element, and - // set or remove the property as appropriate. - function propertyFunction() { - var x = value.apply(this, arguments); - if (x == null) delete this[name]; - else this[name] = x; - } - - return value == null - ? propertyNull : (typeof value === "function" - ? propertyFunction : propertyConstant); -} - -d3_selectionPrototype.text = function(value) { - return arguments.length - ? this.each(typeof value === "function" - ? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null - ? function() { if (this.textContent !== "") this.textContent = ""; } - : function() { if (this.textContent !== value) this.textContent = value; }) - : this.node().textContent; -}; - -d3_selectionPrototype.html = function(value) { - return arguments.length - ? this.each(typeof value === "function" - ? function() { var v = value.apply(this, arguments); this.innerHTML = v == null ? "" : v; } : value == null - ? function() { this.innerHTML = ""; } - : function() { this.innerHTML = value; }) - : this.node().innerHTML; -}; - -d3_selectionPrototype.append = function(name) { - name = d3_selection_creator(name); - return this.select(function() { - return this.appendChild(name.apply(this, arguments)); - }); -}; - -function d3_selection_creator(name) { - return typeof name === "function" ? name - : (name = d3.ns.qualify(name)).local ? function() { return this.ownerDocument.createElementNS(name.space, name.local); } - : function() { return this.ownerDocument.createElementNS(this.namespaceURI, name); }; -} - -d3_selectionPrototype.insert = function(name, before) { - name = d3_selection_creator(name); - before = d3_selection_selector(before); - return this.select(function() { - return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null); - }); -}; - -// TODO remove(selector)? -// TODO remove(node)? -// TODO remove(function)? -d3_selectionPrototype.remove = function() { - return this.each(function() { - var parent = this.parentNode; - if (parent) parent.removeChild(this); - }); -}; - -d3_selectionPrototype.data = function(value, key) { - var i = -1, - n = this.length, - group, - node; - - // If no value is specified, return the first value. - if (!arguments.length) { - value = new Array(n = (group = this[0]).length); - while (++i < n) { - if (node = group[i]) { - value[i] = node.__data__; - } - } - return value; - } - - function bind(group, groupData) { - var i, - n = group.length, - m = groupData.length, - n0 = Math.min(n, m), - updateNodes = new Array(m), - enterNodes = new Array(m), - exitNodes = new Array(n), - node, - nodeData; - - if (key) { - var nodeByKeyValue = new d3_Map, - dataByKeyValue = new d3_Map, - keyValues = [], - keyValue; - - for (i = -1; ++i < n;) { - keyValue = key.call(node = group[i], node.__data__, i); - if (nodeByKeyValue.has(keyValue)) { - exitNodes[i] = node; // duplicate selection key - } else { - nodeByKeyValue.set(keyValue, node); - } - keyValues.push(keyValue); - } - - for (i = -1; ++i < m;) { - keyValue = key.call(groupData, nodeData = groupData[i], i); - if (node = nodeByKeyValue.get(keyValue)) { - updateNodes[i] = node; - node.__data__ = nodeData; - } else if (!dataByKeyValue.has(keyValue)) { // no duplicate data key - enterNodes[i] = d3_selection_dataNode(nodeData); - } - dataByKeyValue.set(keyValue, nodeData); - nodeByKeyValue.remove(keyValue); - } - - for (i = -1; ++i < n;) { - if (nodeByKeyValue.has(keyValues[i])) { - exitNodes[i] = group[i]; - } - } - } else { - for (i = -1; ++i < n0;) { - node = group[i]; - nodeData = groupData[i]; - if (node) { - node.__data__ = nodeData; - updateNodes[i] = node; - } else { - enterNodes[i] = d3_selection_dataNode(nodeData); - } - } - for (; i < m; ++i) { - enterNodes[i] = d3_selection_dataNode(groupData[i]); - } - for (; i < n; ++i) { - exitNodes[i] = group[i]; - } - } - - enterNodes.update - = updateNodes; - - enterNodes.parentNode - = updateNodes.parentNode - = exitNodes.parentNode - = group.parentNode; - - enter.push(enterNodes); - update.push(updateNodes); - exit.push(exitNodes); - } - - var enter = d3_selection_enter([]), - update = d3_selection([]), - exit = d3_selection([]); - - if (typeof value === "function") { - while (++i < n) { - bind(group = this[i], value.call(group, group.parentNode.__data__, i)); - } - } else { - while (++i < n) { - bind(group = this[i], value); - } - } - - update.enter = function() { return enter; }; - update.exit = function() { return exit; }; - return update; -}; - -function d3_selection_dataNode(data) { - return {__data__: data}; -} - -d3_selectionPrototype.datum = function(value) { - return arguments.length - ? this.property("__data__", value) - : this.property("__data__"); -}; - -d3_selectionPrototype.filter = function(filter) { - var subgroups = [], - subgroup, - group, - node; - - if (typeof filter !== "function") filter = d3_selection_filter(filter); - - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - subgroup.parentNode = (group = this[j]).parentNode; - for (var i = 0, n = group.length; i < n; i++) { - if ((node = group[i]) && filter.call(node, node.__data__, i)) { - subgroup.push(node); - } - } - } - - return d3_selection(subgroups); -}; - -function d3_selection_filter(selector) { - return function() { - return d3_selectMatches(this, selector); - }; -} - -d3_selectionPrototype.order = function() { - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) { - if (node = group[i]) { - if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next); - next = node; - } - } - } - return this; -}; - -d3_selectionPrototype.sort = function(comparator) { - comparator = d3_selection_sortComparator.apply(this, arguments); - for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator); - return this.order(); -}; - -function d3_selection_sortComparator(comparator) { - if (!arguments.length) comparator = d3.ascending; - return function(a, b) { - return a && b ? comparator(a.__data__, b.__data__) : !a - !b; - }; -} - -d3_selectionPrototype.each = function(callback) { - return d3_selection_each(this, function(node, i, j) { - callback.call(node, node.__data__, i, j); - }); -}; - -function d3_selection_each(groups, callback) { - for (var j = 0, m = groups.length; j < m; j++) { - for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) { - if (node = group[i]) callback(node, i, j); - } - } - return groups; -} - -d3_selectionPrototype.call = function(callback) { - var args = d3_array(arguments); - callback.apply(args[0] = this, args); - return this; -}; - -d3_selectionPrototype.empty = function() { - return !this.node(); -}; - -d3_selectionPrototype.node = function() { - for (var j = 0, m = this.length; j < m; j++) { - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - var node = group[i]; - if (node) return node; - } - } - return null; -}; - -d3_selectionPrototype.size = function() { - var n = 0; - this.each(function() { ++n; }); - return n; -}; - -function d3_selection_enter(selection) { - d3_subclass(selection, d3_selection_enterPrototype); - return selection; -} - -var d3_selection_enterPrototype = []; - -d3.selection.enter = d3_selection_enter; -d3.selection.enter.prototype = d3_selection_enterPrototype; - -d3_selection_enterPrototype.append = d3_selectionPrototype.append; -d3_selection_enterPrototype.empty = d3_selectionPrototype.empty; -d3_selection_enterPrototype.node = d3_selectionPrototype.node; -d3_selection_enterPrototype.call = d3_selectionPrototype.call; -d3_selection_enterPrototype.size = d3_selectionPrototype.size; - - -d3_selection_enterPrototype.select = function(selector) { - var subgroups = [], - subgroup, - subnode, - upgroup, - group, - node; - - for (var j = -1, m = this.length; ++j < m;) { - upgroup = (group = this[j]).update; - subgroups.push(subgroup = []); - subgroup.parentNode = group.parentNode; - for (var i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j)); - subnode.__data__ = node.__data__; - } else { - subgroup.push(null); - } - } - } - - return d3_selection(subgroups); -}; - -d3_selection_enterPrototype.insert = function(name, before) { - if (arguments.length < 2) before = d3_selection_enterInsertBefore(this); - return d3_selectionPrototype.insert.call(this, name, before); -}; - -function d3_selection_enterInsertBefore(enter) { - var i0, j0; - return function(d, i, j) { - var group = enter[j].update, - n = group.length, - node; - if (j != j0) j0 = j, i0 = 0; - if (i >= i0) i0 = i + 1; - while (!(node = group[i0]) && ++i0 < n); - return node; - }; -} - -// import "../transition/transition"; - -d3_selectionPrototype.transition = function() { - var id = d3_transitionInheritId || ++d3_transitionId, - subgroups = [], - subgroup, - node, - transition = d3_transitionInherit || {time: Date.now(), ease: d3_ease_cubicInOut, delay: 0, duration: 250}; - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) d3_transitionNode(node, i, id, transition); - subgroup.push(node); - } - } - - return d3_transition(subgroups, id); -}; -// import "../transition/transition"; - -d3_selectionPrototype.interrupt = function() { - return this.each(d3_selection_interrupt); -}; - -function d3_selection_interrupt() { - var lock = this.__transition__; - if (lock) ++lock.active; -} - -// TODO fast singleton implementation? -d3.select = function(node) { - var group = [typeof node === "string" ? d3_select(node, d3_document) : node]; - group.parentNode = d3_documentElement; - return d3_selection([group]); -}; - -d3.selectAll = function(nodes) { - var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes); - group.parentNode = d3_documentElement; - return d3_selection([group]); -}; - -var d3_selectionRoot = d3.select(d3_documentElement); - -d3_selectionPrototype.on = function(type, listener, capture) { - var n = arguments.length; - if (n < 3) { - - // For on(object) or on(object, boolean), the object specifies the event - // types and listeners to add or remove. The optional boolean specifies - // whether the listener captures events. - if (typeof type !== "string") { - if (n < 2) listener = false; - for (capture in type) this.each(d3_selection_on(capture, type[capture], listener)); - return this; - } - - // For on(string), return the listener for the first node. - if (n < 2) return (n = this.node()["__on" + type]) && n._; - - // For on(string, function), use the default capture. - capture = false; - } - - // Otherwise, a type, listener and capture are specified, and handled as below. - return this.each(d3_selection_on(type, listener, capture)); -}; - -function d3_selection_on(type, listener, capture) { - var name = "__on" + type, - i = type.indexOf("."), - wrap = d3_selection_onListener; - - if (i > 0) type = type.substring(0, i); - var filter = d3_selection_onFilters.get(type); - if (filter) type = filter, wrap = d3_selection_onFilter; - - function onRemove() { - var l = this[name]; - if (l) { - this.removeEventListener(type, l, l.$); - delete this[name]; - } - } - - function onAdd() { - var l = wrap(listener, d3_array(arguments)); - if (typeof Raven !== 'undefined') l = Raven.wrap(l); - onRemove.call(this); - this.addEventListener(type, this[name] = l, l.$ = capture); - l._ = listener; - } - - function removeAll() { - var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), - match; - for (var name in this) { - if (match = name.match(re)) { - var l = this[name]; - this.removeEventListener(match[1], l, l.$); - delete this[name]; - } - } - } - - return i - ? listener ? onAdd : onRemove - : listener ? d3_noop : removeAll; -} - -var d3_selection_onFilters = d3.map({ - mouseenter: "mouseover", - mouseleave: "mouseout" -}); - -d3_selection_onFilters.forEach(function(k) { - if ("on" + k in d3_document) d3_selection_onFilters.remove(k); -}); - -function d3_selection_onListener(listener, argumentz) { - return function(e) { - var o = d3.event; // Events can be reentrant (e.g., focus). - d3.event = e; - argumentz[0] = this.__data__; - try { - listener.apply(this, argumentz); - } finally { - d3.event = o; - } - }; -} - -function d3_selection_onFilter(listener, argumentz) { - var l = d3_selection_onListener(listener, argumentz); - return function(e) { - var target = this, related = e.relatedTarget; - if (!related || (related !== target && !(related.compareDocumentPosition(target) & 8))) { - l.call(target, e); - } - }; -} - -var d3_event_dragSelect = d3_vendorSymbol(d3_documentElement.style, "userSelect"), - d3_event_dragId = 0; - -function d3_event_dragSuppress() { - var name = ".dragsuppress-" + ++d3_event_dragId, - touchmove = "touchmove" + name, - selectstart = "selectstart" + name, - dragstart = "dragstart" + name, - click = "click" + name, - w = d3.select(d3_window).on(touchmove, d3_eventPreventDefault).on(selectstart, d3_eventPreventDefault).on(dragstart, d3_eventPreventDefault), - style = d3_documentElement.style, - select = style[d3_event_dragSelect]; - style[d3_event_dragSelect] = "none"; - return function(suppressClick) { - w.on(name, null); - style[d3_event_dragSelect] = select; - if (suppressClick) { // suppress the next click, but only if it’s immediate - function off() { w.on(click, null); } - w.on(click, function() { d3_eventCancel(); off(); }, true); - setTimeout(off, 0); - } - }; -} - -d3.mouse = function(container) { - return d3_mousePoint(container, d3_eventSource()); -}; - -// https://bugs.webkit.org/show_bug.cgi?id=44083 -var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0; - -function d3_mousePoint(container, e) { - if (e.changedTouches) e = e.changedTouches[0]; - var svg = container.ownerSVGElement || container; - if (svg.createSVGPoint) { - var point = svg.createSVGPoint(); - if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) { - svg = d3.select("body").append("svg").style({ - position: "absolute", - top: 0, - left: 0, - margin: 0, - padding: 0, - border: "none" - }, "important"); - var ctm = svg[0][0].getScreenCTM(); - d3_mouse_bug44083 = !(ctm.f || ctm.e); - svg.remove(); - } - if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; - else point.x = e.clientX, point.y = e.clientY; - point = point.matrixTransform(container.getScreenCTM().inverse()); - return [point.x, point.y]; - } - var rect = container.getBoundingClientRect(); - return [e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop]; -}; - -d3.touches = function(container, touches) { - if (arguments.length < 2) touches = d3_eventSource().touches; - return touches ? d3_array(touches).map(function(touch) { - var point = d3_mousePoint(container, touch); - point.identifier = touch.identifier; - return point; - }) : []; -}; -var π = Math.PI, - τ = 2 * π, - halfπ = π / 2, - ε = 1e-6, - ε2 = ε * ε, - d3_radians = π / 180, - d3_degrees = 180 / π; - -function d3_sgn(x) { - return x > 0 ? 1 : x < 0 ? -1 : 0; -} - -function d3_acos(x) { - return x > 1 ? 0 : x < -1 ? π : Math.acos(x); -} - -function d3_asin(x) { - return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x); -} - -function d3_sinh(x) { - return ((x = Math.exp(x)) - 1 / x) / 2; -} - -function d3_cosh(x) { - return ((x = Math.exp(x)) + 1 / x) / 2; -} - -function d3_tanh(x) { - return ((x = Math.exp(2 * x)) - 1) / (x + 1); -} - -function d3_haversin(x) { - return (x = Math.sin(x / 2)) * x; -} - -var ρ = Math.SQRT2, - ρ2 = 2, - ρ4 = 4; - -// p0 = [ux0, uy0, w0] -// p1 = [ux1, uy1, w1] -d3.interpolateZoom = function(p0, p1) { - var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], - ux1 = p1[0], uy1 = p1[1], w1 = p1[2]; - - var dx = ux1 - ux0, - dy = uy1 - uy0, - d2 = dx * dx + dy * dy, - d1 = Math.sqrt(d2), - b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), - b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), - r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), - r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), - dr = r1 - r0, - S = (dr || Math.log(w1 / w0)) / ρ; - - function interpolate(t) { - var s = t * S; - if (dr) { - // General case. - var coshr0 = d3_cosh(r0), - u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0)); - return [ - ux0 + u * dx, - uy0 + u * dy, - w0 * coshr0 / d3_cosh(ρ * s + r0) - ]; - } - // Special case for u0 ~= u1. - return [ - ux0 + t * dx, - uy0 + t * dy, - w0 * Math.exp(ρ * s) - ]; - } - - interpolate.duration = S * 1000; - - return interpolate; -}; - -d3.behavior.zoom = function() { - var view = {x: 0, y: 0, k: 1}, - translate0, // translate when we started zooming (to avoid drift) - center, // desired position of translate0 after zooming - size = [960, 500], // viewport size; required for zoom interpolation - scaleExtent = d3_behavior_zoomInfinity, - mousedown = "mousedown.zoom", - mousemove = "mousemove.zoom", - mouseup = "mouseup.zoom", - mousewheelTimer, - touchstart = "touchstart.zoom", - touchtime, // time of last touchstart (to detect double-tap) - event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), - x0, - x1, - y0, - y1; - - function zoom(g) { - g .on(mousedown, mousedowned) - .on(d3_behavior_zoomWheel + ".zoom", mousewheeled) - .on(mousemove, mousewheelreset) - .on("dblclick.zoom", dblclicked) - .on(touchstart, touchstarted); - } - - zoom.event = function(g) { - g.each(function() { - var event_ = event.of(this, arguments), - view1 = view; - if (d3_transitionInheritId) { - d3.select(this).transition() - .each("start.zoom", function() { - view = this.__chart__ || {x: 0, y: 0, k: 1}; // pre-transition state - zoomstarted(event_); - }) - .tween("zoom:zoom", function() { - var dx = size[0], - dy = size[1], - cx = dx / 2, - cy = dy / 2, - i = d3.interpolateZoom( - [(cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k], - [(cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k] - ); - return function(t) { - var l = i(t), k = dx / l[2]; - this.__chart__ = view = {x: cx - l[0] * k, y: cy - l[1] * k, k: k}; - zoomed(event_); - }; - }) - .each("end.zoom", function() { - zoomended(event_); - }); - } else { - this.__chart__ = view; - zoomstarted(event_); - zoomed(event_); - zoomended(event_); - } - }); - } - - zoom.translate = function(_) { - if (!arguments.length) return [view.x, view.y]; - view = {x: +_[0], y: +_[1], k: view.k}; // copy-on-write - rescale(); - return zoom; - }; - - zoom.scale = function(_) { - if (!arguments.length) return view.k; - view = {x: view.x, y: view.y, k: +_}; // copy-on-write - rescale(); - return zoom; - }; - - zoom.scaleExtent = function(_) { - if (!arguments.length) return scaleExtent; - scaleExtent = _ == null ? d3_behavior_zoomInfinity : [+_[0], +_[1]]; - return zoom; - }; - - zoom.center = function(_) { - if (!arguments.length) return center; - center = _ && [+_[0], +_[1]]; - return zoom; - }; - - zoom.size = function(_) { - if (!arguments.length) return size; - size = _ && [+_[0], +_[1]]; - return zoom; - }; - - zoom.x = function(z) { - if (!arguments.length) return x1; - x1 = z; - x0 = z.copy(); - view = {x: 0, y: 0, k: 1}; // copy-on-write - return zoom; - }; - - zoom.y = function(z) { - if (!arguments.length) return y1; - y1 = z; - y0 = z.copy(); - view = {x: 0, y: 0, k: 1}; // copy-on-write - return zoom; - }; - - function location(p) { - return [(p[0] - view.x) / view.k, (p[1] - view.y) / view.k]; - } - - function point(l) { - return [l[0] * view.k + view.x, l[1] * view.k + view.y]; - } - - function scaleTo(s) { - view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s)); - } - - function translateTo(p, l) { - l = point(l); - view.x += p[0] - l[0]; - view.y += p[1] - l[1]; - } - - function rescale() { - if (x1) x1.domain(x0.range().map(function(x) { return (x - view.x) / view.k; }).map(x0.invert)); - if (y1) y1.domain(y0.range().map(function(y) { return (y - view.y) / view.k; }).map(y0.invert)); - } - - function zoomstarted(event) { - event({type: "zoomstart"}); - } - - function zoomed(event) { - rescale(); - event({type: "zoom", scale: view.k, translate: [view.x, view.y]}); - } - - function zoomended(event) { - event({type: "zoomend"}); - } - - function mousedowned() { - var target = this, - event_ = event.of(target, arguments), - eventTarget = d3.event.target, - dragged = 0, - w = d3.select(d3_window).on(mousemove, moved).on(mouseup, ended), - l = location(d3.mouse(target)), - dragRestore = d3_event_dragSuppress(); - - d3_selection_interrupt.call(target); - zoomstarted(event_); - - function moved() { - dragged = 1; - translateTo(d3.mouse(target), l); - zoomed(event_); - } - - function ended() { - w.on(mousemove, d3_window === target ? mousewheelreset : null).on(mouseup, null); - dragRestore(dragged && d3.event.target === eventTarget); - zoomended(event_); - } - } - - // These closures persist for as long as at least one touch is active. - function touchstarted() { - var target = this, - event_ = event.of(target, arguments), - locations0 = {}, // touchstart locations - distance0 = 0, // distance² between initial touches - scale0, // scale when we started touching - eventId = d3.event.changedTouches[0].identifier, - touchmove = "touchmove.zoom-" + eventId, - touchend = "touchend.zoom-" + eventId, - w = d3.select(d3_window).on(touchmove, moved).on(touchend, ended), - t = d3.select(target).on(mousedown, null).on(touchstart, started), // prevent duplicate events - dragRestore = d3_event_dragSuppress(); - - d3_selection_interrupt.call(target); - started(); - zoomstarted(event_); - - // Updates locations of any touches in locations0. - function relocate() { - var touches = d3.touches(target); - scale0 = view.k; - touches.forEach(function(t) { - if (t.identifier in locations0) locations0[t.identifier] = location(t); - }); - return touches; - } - - // Temporarily override touchstart while gesture is active. - function started() { - // Only track touches started on the target element. - var changed = d3.event.changedTouches; - for (var i = 0, n = changed.length; i < n; ++i) { - locations0[changed[i].identifier] = null; - } - - var touches = relocate(), - now = Date.now(); - - if (touches.length === 1) { - if (now - touchtime < 500) { // dbltap - var p = touches[0], l = locations0[p.identifier]; - scaleTo(view.k * 2); - translateTo(p, l); - d3_eventPreventDefault(); - zoomed(event_); - } - touchtime = now; - } else if (touches.length > 1) { - var p = touches[0], q = touches[1], - dx = p[0] - q[0], dy = p[1] - q[1]; - distance0 = dx * dx + dy * dy; - } - } - - function moved() { - var touches = d3.touches(target), - p0, l0, - p1, l1; - for (var i = 0, n = touches.length; i < n; ++i, l1 = null) { - p1 = touches[i]; - if (l1 = locations0[p1.identifier]) { - if (l0) break; - p0 = p1, l0 = l1; - } - } - - if (l1) { - var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, - scale1 = distance0 && Math.sqrt(distance1 / distance0); - p0 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2]; - l0 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2]; - scaleTo(scale1 * scale0); - } - - touchtime = null; - translateTo(p0, l0); - zoomed(event_); - } - - function ended() { - // If there are any globally-active touches remaining, remove the ended - // touches from locations0. - if (d3.event.touches.length) { - var changed = d3.event.changedTouches; - for (var i = 0, n = changed.length; i < n; ++i) { - delete locations0[changed[i].identifier]; - } - // If locations0 is not empty, then relocate and continue listening for - // touchmove and touchend. - for (var identifier in locations0) { - return void relocate(); // locations may have detached due to rotation - } - } - // Otherwise, remove touchmove and touchend listeners. - w.on(touchmove, null).on(touchend, null); - t.on(mousedown, mousedowned).on(touchstart, touchstarted); - dragRestore(); - zoomended(event_); - } - } - - function mousewheeled() { - var event_ = event.of(this, arguments); - if (mousewheelTimer) clearTimeout(mousewheelTimer); - else d3_selection_interrupt.call(this), zoomstarted(event_); - mousewheelTimer = setTimeout(function() { mousewheelTimer = null; zoomended(event_); }, 50); - d3_eventPreventDefault(); - var point = center || d3.mouse(this); - if (!translate0) translate0 = location(point); - scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k); - translateTo(point, translate0); - zoomed(event_); - } - - function mousewheelreset() { - translate0 = null; - } - - function dblclicked() { - var event_ = event.of(this, arguments), - p = d3.mouse(this), - l = location(p), - k = Math.log(view.k) / Math.LN2; - zoomstarted(event_); - scaleTo(Math.pow(2, d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1)); - translateTo(p, l); - zoomed(event_); - zoomended(event_); - } - - return d3.rebind(zoom, event, "on"); -}; - -var d3_behavior_zoomInfinity = [0, Infinity]; // default scale extent - -// https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel -var d3_behavior_zoomDelta, d3_behavior_zoomWheel - = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() { return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1); }, "wheel") - : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() { return d3.event.wheelDelta; }, "mousewheel") - : (d3_behavior_zoomDelta = function() { return -d3.event.detail; }, "MozMousePixelScroll"); -function d3_functor(v) { - return typeof v === "function" ? v : function() { return v; }; -} - -d3.functor = d3_functor; - -var d3_timer_queueHead, - d3_timer_queueTail, - d3_timer_interval, // is an interval (or frame) active? - d3_timer_timeout, // is a timeout active? - d3_timer_active, // active timer object - d3_timer_frame = d3_window[d3_vendorSymbol(d3_window, "requestAnimationFrame")] || function(callback) { setTimeout(callback, 17); }; - -// The timer will continue to fire until callback returns true. -d3.timer = function(callback, delay, then) { - var n = arguments.length; - if (n < 2) delay = 0; - if (n < 3) then = Date.now(); - - // Add the callback to the tail of the queue. - var time = then + delay, timer = {c: callback, t: time, f: false, n: null}; - if (d3_timer_queueTail) d3_timer_queueTail.n = timer; - else d3_timer_queueHead = timer; - d3_timer_queueTail = timer; - - // Start animatin'! - if (!d3_timer_interval) { - d3_timer_timeout = clearTimeout(d3_timer_timeout); - d3_timer_interval = 1; - d3_timer_frame(d3_timer_step); - } -}; - -function d3_timer_step() { - var now = d3_timer_mark(), - delay = d3_timer_sweep() - now; - if (delay > 24) { - if (isFinite(delay)) { - clearTimeout(d3_timer_timeout); - d3_timer_timeout = setTimeout(d3_timer_step, delay); - } - d3_timer_interval = 0; - } else { - d3_timer_interval = 1; - d3_timer_frame(d3_timer_step); - } -} - -d3.timer.flush = function() { - d3_timer_mark(); - d3_timer_sweep(); -}; - -function d3_timer_mark() { - var now = Date.now(); - d3_timer_active = d3_timer_queueHead; - while (d3_timer_active) { - if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t); - d3_timer_active = d3_timer_active.n; - } - return now; -} - -// Flush after callbacks to avoid concurrent queue modification. -// Returns the time of the earliest active timer, post-sweep. -function d3_timer_sweep() { - var t0, - t1 = d3_timer_queueHead, - time = Infinity; - while (t1) { - if (t1.f) { - t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n; - } else { - if (t1.t < time) time = t1.t; - t1 = (t0 = t1).n; - } - } - d3_timer_queueTail = t0; - return time; -} -d3.geo = {}; -function d3_identity(d) { - return d; -} -function d3_true() { - return true; -} - -function d3_geo_spherical(cartesian) { - return [ - Math.atan2(cartesian[1], cartesian[0]), - d3_asin(cartesian[2]) - ]; -} - -function d3_geo_sphericalEqual(a, b) { - return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε; -} - -// General spherical polygon clipping algorithm: takes a polygon, cuts it into -// visible line segments and rejoins the segments by interpolating along the -// clip edge. -function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) { - var subject = [], - clip = []; - - segments.forEach(function(segment) { - if ((n = segment.length - 1) <= 0) return; - var n, p0 = segment[0], p1 = segment[n]; - - // If the first and last points of a segment are coincident, then treat as - // a closed ring. - // TODO if all rings are closed, then the winding order of the exterior - // ring should be checked. - if (d3_geo_sphericalEqual(p0, p1)) { - listener.lineStart(); - for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]); - listener.lineEnd(); - return; - } - - var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), - b = new d3_geo_clipPolygonIntersection(p0, null, a, false); - a.o = b; - subject.push(a); - clip.push(b); - a = new d3_geo_clipPolygonIntersection(p1, segment, null, false); - b = new d3_geo_clipPolygonIntersection(p1, null, a, true); - a.o = b; - subject.push(a); - clip.push(b); - }); - clip.sort(compare); - d3_geo_clipPolygonLinkCircular(subject); - d3_geo_clipPolygonLinkCircular(clip); - if (!subject.length) return; - - for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) { - clip[i].e = entry = !entry; - } - - var start = subject[0], - points, - point; - while (1) { - // Find first unvisited intersection. - var current = start, - isSubject = true; - while (current.v) if ((current = current.n) === start) return; - points = current.z; - listener.lineStart(); - do { - current.v = current.o.v = true; - if (current.e) { - if (isSubject) { - for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.n.x, 1, listener); - } - current = current.n; - } else { - if (isSubject) { - points = current.p.z; - for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.p.x, -1, listener); - } - current = current.p; - } - current = current.o; - points = current.z; - isSubject = !isSubject; - } while (!current.v); - listener.lineEnd(); - } -} - -function d3_geo_clipPolygonLinkCircular(array) { - if (!(n = array.length)) return; - var n, - i = 0, - a = array[0], - b; - while (++i < n) { - a.n = b = array[i]; - b.p = a; - a = b; - } - a.n = b = array[0]; - b.p = a; -} - -function d3_geo_clipPolygonIntersection(point, points, other, entry) { - this.x = point; - this.z = points; - this.o = other; // another intersection - this.e = entry; // is an entry? - this.v = false; // visited - this.n = this.p = null; // next & previous -} - -function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) { - return function(rotate, listener) { - var line = clipLine(listener), - rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]); - - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - clip.point = pointRing; - clip.lineStart = ringStart; - clip.lineEnd = ringEnd; - segments = []; - polygon = []; - listener.polygonStart(); - }, - polygonEnd: function() { - clip.point = point; - clip.lineStart = lineStart; - clip.lineEnd = lineEnd; - - segments = d3.merge(segments); - var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon); - if (segments.length) { - d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener); - } else if (clipStartInside) { - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - } - listener.polygonEnd(); - segments = polygon = null; - }, - sphere: function() { - listener.polygonStart(); - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - listener.polygonEnd(); - } - }; - - function point(λ, φ) { - var point = rotate(λ, φ); - if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ); - } - function pointLine(λ, φ) { - var point = rotate(λ, φ); - line.point(point[0], point[1]); - } - function lineStart() { clip.point = pointLine; line.lineStart(); } - function lineEnd() { clip.point = point; line.lineEnd(); } - - var segments; - - var buffer = d3_geo_clipBufferListener(), - ringListener = clipLine(buffer), - polygon, - ring; - - function pointRing(λ, φ) { - ring.push([λ, φ]); - var point = rotate(λ, φ); - ringListener.point(point[0], point[1]); - } - - function ringStart() { - ringListener.lineStart(); - ring = []; - } - - function ringEnd() { - pointRing(ring[0][0], ring[0][1]); - ringListener.lineEnd(); - - var clean = ringListener.clean(), - ringSegments = buffer.buffer(), - segment, - n = ringSegments.length; - - ring.pop(); - polygon.push(ring); - ring = null; - - if (!n) return; - - // No intersections. - if (clean & 1) { - segment = ringSegments[0]; - var n = segment.length - 1, - i = -1, - point; - listener.lineStart(); - while (++i < n) listener.point((point = segment[i])[0], point[1]); - listener.lineEnd(); - return; - } - - // Rejoin connected segments. - // TODO reuse bufferListener.rejoin()? - if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); - - segments.push(ringSegments.filter(d3_geo_clipSegmentLength1)); - } - - return clip; - }; -} - -function d3_geo_clipSegmentLength1(segment) { - return segment.length > 1; -} - -function d3_geo_clipBufferListener() { - var lines = [], - line; - return { - lineStart: function() { lines.push(line = []); }, - point: function(λ, φ) { line.push([λ, φ]); }, - lineEnd: d3_noop, - buffer: function() { - var buffer = lines; - lines = []; - line = null; - return buffer; - }, - rejoin: function() { - if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); - } - }; -} - -// Intersection points are sorted along the clip edge. For both antimeridian -// cutting and circle clipping, the same comparison is used. -function d3_geo_clipSort(a, b) { - return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]); -} -// Adds floating point numbers with twice the normal precision. -// Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and -// Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3) -// 305–363 (1997). -// Code adapted from GeographicLib by Charles F. F. Karney, -// http://geographiclib.sourceforge.net/ -// See lib/geographiclib/LICENSE for details. - -function d3_adder() {} - -d3_adder.prototype = { - s: 0, // rounded value - t: 0, // exact error - add: function(y) { - d3_adderSum(y, this.t, d3_adderTemp); - d3_adderSum(d3_adderTemp.s, this.s, this); - if (this.s) this.t += d3_adderTemp.t; - else this.s = d3_adderTemp.t; - }, - reset: function() { - this.s = this.t = 0; - }, - valueOf: function() { - return this.s; - } -}; - -var d3_adderTemp = new d3_adder; - -function d3_adderSum(a, b, o) { - var x = o.s = a + b, // a + b - bv = x - a, av = x - bv; // b_virtual & a_virtual - o.t = (a - av) + (b - bv); // a_roundoff + b_roundoff -} - -d3.geo.stream = function(object, listener) { - if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) { - d3_geo_streamObjectType[object.type](object, listener); - } else { - d3_geo_streamGeometry(object, listener); - } -}; - -function d3_geo_streamGeometry(geometry, listener) { - if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) { - d3_geo_streamGeometryType[geometry.type](geometry, listener); - } -} - -var d3_geo_streamObjectType = { - Feature: function(feature, listener) { - d3_geo_streamGeometry(feature.geometry, listener); - }, - FeatureCollection: function(object, listener) { - var features = object.features, i = -1, n = features.length; - while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener); - } -}; - -var d3_geo_streamGeometryType = { - Sphere: function(object, listener) { - listener.sphere(); - }, - Point: function(object, listener) { - object = object.coordinates; - listener.point(object[0], object[1], object[2]); - }, - MultiPoint: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]); - }, - LineString: function(object, listener) { - d3_geo_streamLine(object.coordinates, listener, 0); - }, - MultiLineString: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0); - }, - Polygon: function(object, listener) { - d3_geo_streamPolygon(object.coordinates, listener); - }, - MultiPolygon: function(object, listener) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) d3_geo_streamPolygon(coordinates[i], listener); - }, - GeometryCollection: function(object, listener) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) d3_geo_streamGeometry(geometries[i], listener); - } -}; - -function d3_geo_streamLine(coordinates, listener, closed) { - var i = -1, n = coordinates.length - closed, coordinate; - listener.lineStart(); - while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]); - listener.lineEnd(); -} - -function d3_geo_streamPolygon(coordinates, listener) { - var i = -1, n = coordinates.length; - listener.polygonStart(); - while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1); - listener.polygonEnd(); -} - -d3.geo.area = function(object) { - d3_geo_areaSum = 0; - d3.geo.stream(object, d3_geo_area); - return d3_geo_areaSum; -}; - -var d3_geo_areaSum, - d3_geo_areaRingSum = new d3_adder; - -var d3_geo_area = { - sphere: function() { d3_geo_areaSum += 4 * π; }, - point: d3_noop, - lineStart: d3_noop, - lineEnd: d3_noop, - - // Only count area for polygon rings. - polygonStart: function() { - d3_geo_areaRingSum.reset(); - d3_geo_area.lineStart = d3_geo_areaRingStart; - }, - polygonEnd: function() { - var area = 2 * d3_geo_areaRingSum; - d3_geo_areaSum += area < 0 ? 4 * π + area : area; - d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop; - } -}; - -function d3_geo_areaRingStart() { - var λ00, φ00, λ0, cosφ0, sinφ0; // start point and previous point - - // For the first point, … - d3_geo_area.point = function(λ, φ) { - d3_geo_area.point = nextPoint; - λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), sinφ0 = Math.sin(φ); - }; - - // For subsequent points, … - function nextPoint(λ, φ) { - λ *= d3_radians; - φ = φ * d3_radians / 2 + π / 4; // half the angular distance from south pole - - // Spherical excess E for a spherical triangle with vertices: south pole, - // previous point, current point. Uses a formula derived from Cagnoli’s - // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). - var dλ = λ - λ0, - cosφ = Math.cos(φ), - sinφ = Math.sin(φ), - k = sinφ0 * sinφ, - u = cosφ0 * cosφ + k * Math.cos(dλ), - v = k * Math.sin(dλ); - d3_geo_areaRingSum.add(Math.atan2(v, u)); - - // Advance the previous points. - λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ; - } - - // For the last point, return to the start. - d3_geo_area.lineEnd = function() { - nextPoint(λ00, φ00); - }; -} -// TODO -// cross and scale return new vectors, -// whereas add and normalize operate in-place - -function d3_geo_cartesian(spherical) { - var λ = spherical[0], - φ = spherical[1], - cosφ = Math.cos(φ); - return [ - cosφ * Math.cos(λ), - cosφ * Math.sin(λ), - Math.sin(φ) - ]; -} - -function d3_geo_cartesianDot(a, b) { - return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; -} - -function d3_geo_cartesianCross(a, b) { - return [ - a[1] * b[2] - a[2] * b[1], - a[2] * b[0] - a[0] * b[2], - a[0] * b[1] - a[1] * b[0] - ]; -} - -function d3_geo_cartesianAdd(a, b) { - a[0] += b[0]; - a[1] += b[1]; - a[2] += b[2]; -} - -function d3_geo_cartesianScale(vector, k) { - return [ - vector[0] * k, - vector[1] * k, - vector[2] * k - ]; -} - -function d3_geo_cartesianNormalize(d) { - var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); - d[0] /= l; - d[1] /= l; - d[2] /= l; -} - -function d3_geo_pointInPolygon(point, polygon) { - var meridian = point[0], - parallel = point[1], - meridianNormal = [Math.sin(meridian), -Math.cos(meridian), 0], - polarAngle = 0, - winding = 0; - d3_geo_areaRingSum.reset(); - - for (var i = 0, n = polygon.length; i < n; ++i) { - var ring = polygon[i], - m = ring.length; - if (!m) continue; - var point0 = ring[0], - λ0 = point0[0], - φ0 = point0[1] / 2 + π / 4, - sinφ0 = Math.sin(φ0), - cosφ0 = Math.cos(φ0), - j = 1; - - while (true) { - if (j === m) j = 0; - point = ring[j]; - var λ = point[0], - φ = point[1] / 2 + π / 4, - sinφ = Math.sin(φ), - cosφ = Math.cos(φ), - dλ = λ - λ0, - antimeridian = abs(dλ) > π, - k = sinφ0 * sinφ; - d3_geo_areaRingSum.add(Math.atan2(k * Math.sin(dλ), cosφ0 * cosφ + k * Math.cos(dλ))); - - polarAngle += antimeridian ? dλ + (dλ >= 0 ? τ : -τ): dλ; - - // Are the longitudes either side of the point's meridian, and are the - // latitudes smaller than the parallel? - if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) { - var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point)); - d3_geo_cartesianNormalize(arc); - var intersection = d3_geo_cartesianCross(meridianNormal, arc); - d3_geo_cartesianNormalize(intersection); - var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]); - if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) { - winding += antimeridian ^ dλ >= 0 ? 1 : -1; - } - } - if (!j++) break; - λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point; - } - } - - // First, determine whether the South pole is inside or outside: - // - // It is inside if: - // * the polygon winds around it in a clockwise direction. - // * the polygon does not (cumulatively) wind around it, but has a negative - // (counter-clockwise) area. - // - // Second, count the (signed) number of times a segment crosses a meridian - // from the point to the South pole. If it is zero, then the point is the - // same side as the South pole. - - return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ (winding & 1); -} - -var d3_geo_clipAntimeridian = d3_geo_clip( - d3_true, - d3_geo_clipAntimeridianLine, - d3_geo_clipAntimeridianInterpolate, - [-π, -π / 2]); - -// Takes a line and cuts into visible segments. Return values: -// 0: there were intersections or the line was empty. -// 1: no intersections. -// 2: there were intersections, and the first and last segments should be -// rejoined. -function d3_geo_clipAntimeridianLine(listener) { - var λ0 = NaN, - φ0 = NaN, - sλ0 = NaN, - clean; // no intersections - - return { - lineStart: function() { - listener.lineStart(); - clean = 1; - }, - point: function(λ1, φ1) { - var sλ1 = λ1 > 0 ? π : -π, - dλ = abs(λ1 - λ0); - if (abs(dλ - π) < ε) { // line crosses a pole - listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ); - listener.point(sλ0, φ0); - listener.lineEnd(); - listener.lineStart(); - listener.point(sλ1, φ0); - listener.point( λ1, φ0); - clean = 0; - } else if (sλ0 !== sλ1 && dλ >= π) { // line crosses antimeridian - // handle degeneracies - if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε; - if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε; - φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1); - listener.point(sλ0, φ0); - listener.lineEnd(); - listener.lineStart(); - listener.point(sλ1, φ0); - clean = 0; - } - listener.point(λ0 = λ1, φ0 = φ1); - sλ0 = sλ1; - }, - lineEnd: function() { - listener.lineEnd(); - λ0 = φ0 = NaN; - }, - // if there are intersections, we always rejoin the first and last segments. - clean: function() { return 2 - clean; } - }; -} - -function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) { - var cosφ0, - cosφ1, - sinλ0_λ1 = Math.sin(λ0 - λ1); - return abs(sinλ0_λ1) > ε - ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) - / (cosφ0 * cosφ1 * sinλ0_λ1)) - : (φ0 + φ1) / 2; -} - -function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) { - var φ; - if (from == null) { - φ = direction * halfπ; - listener.point(-π, φ); - listener.point( 0, φ); - listener.point( π, φ); - listener.point( π, 0); - listener.point( π, -φ); - listener.point( 0, -φ); - listener.point(-π, -φ); - listener.point(-π, 0); - listener.point(-π, φ); - } else if (abs(from[0] - to[0]) > ε) { - var s = from[0] < to[0] ? π : -π; - φ = direction * s / 2; - listener.point(-s, φ); - listener.point( 0, φ); - listener.point( s, φ); - } else { - listener.point(to[0], to[1]); - } -} - -function d3_geo_equirectangular(λ, φ) { - return [λ, φ]; -} - -(d3.geo.equirectangular = function() { - return d3_geo_projection(d3_geo_equirectangular); -}).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular; - -d3.geo.rotation = function(rotate) { - rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0); - - function forward(coordinates) { - coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians); - return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates; - } - - forward.invert = function(coordinates) { - coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians); - return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates; - }; - - return forward; -}; - -function d3_geo_identityRotation(λ, φ) { - return [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ]; -} - -d3_geo_identityRotation.invert = d3_geo_equirectangular; - -// Note: |δλ| must be < 2π -function d3_geo_rotation(δλ, δφ, δγ) { - return δλ ? (δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) - : d3_geo_rotationλ(δλ)) - : (δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) - : d3_geo_identityRotation); -} - -function d3_geo_forwardRotationλ(δλ) { - return function(λ, φ) { - return λ += δλ, [λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ]; - }; -} - -function d3_geo_rotationλ(δλ) { - var rotation = d3_geo_forwardRotationλ(δλ); - rotation.invert = d3_geo_forwardRotationλ(-δλ); - return rotation; -} - -function d3_geo_rotationφγ(δφ, δγ) { - var cosδφ = Math.cos(δφ), - sinδφ = Math.sin(δφ), - cosδγ = Math.cos(δγ), - sinδγ = Math.sin(δγ); - - function rotation(λ, φ) { - var cosφ = Math.cos(φ), - x = Math.cos(λ) * cosφ, - y = Math.sin(λ) * cosφ, - z = Math.sin(φ), - k = z * cosδφ + x * sinδφ; - return [ - Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), - d3_asin(k * cosδγ + y * sinδγ) - ]; - } - - rotation.invert = function(λ, φ) { - var cosφ = Math.cos(φ), - x = Math.cos(λ) * cosφ, - y = Math.sin(λ) * cosφ, - z = Math.sin(φ), - k = z * cosδγ - y * sinδγ; - return [ - Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), - d3_asin(k * cosδφ - x * sinδφ) - ]; - }; - - return rotation; -} - -d3.geo.circle = function() { - var origin = [0, 0], - angle, - precision = 6, - interpolate; - - function circle() { - var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, - rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, - ring = []; - - interpolate(null, null, 1, { - point: function(x, y) { - ring.push(x = rotate(x, y)); - x[0] *= d3_degrees, x[1] *= d3_degrees; - } - }); - - return {type: "Polygon", coordinates: [ring]}; - } - - circle.origin = function(x) { - if (!arguments.length) return origin; - origin = x; - return circle; - }; - - circle.angle = function(x) { - if (!arguments.length) return angle; - interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians); - return circle; - }; - - circle.precision = function(_) { - if (!arguments.length) return precision; - interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians); - return circle; - }; - - return circle.angle(90); -}; - -// Interpolates along a circle centered at [0°, 0°], with a given radius and -// precision. -function d3_geo_circleInterpolate(radius, precision) { - var cr = Math.cos(radius), - sr = Math.sin(radius); - return function(from, to, direction, listener) { - var step = direction * precision; - if (from != null) { - from = d3_geo_circleAngle(cr, from); - to = d3_geo_circleAngle(cr, to); - if (direction > 0 ? from < to: from > to) from += direction * τ; - } else { - from = radius + direction * τ; - to = radius - .5 * step; - } - for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) { - listener.point((point = d3_geo_spherical([ - cr, - -sr * Math.cos(t), - -sr * Math.sin(t) - ]))[0], point[1]); - } - }; -} - -// Signed angle of a cartesian point relative to [cr, 0, 0]. -function d3_geo_circleAngle(cr, point) { - var a = d3_geo_cartesian(point); - a[0] -= cr; - d3_geo_cartesianNormalize(a); - var angle = d3_acos(-a[1]); - return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI); -} - -// Clip features against a small circle centered at [0°, 0°]. -function d3_geo_clipCircle(radius) { - var cr = Math.cos(radius), - smallRadius = cr > 0, - notHemisphere = abs(cr) > ε, // TODO optimise for this common case - interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians); - - return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-π, radius - π]); - - function visible(λ, φ) { - return Math.cos(λ) * Math.cos(φ) > cr; - } - - // Takes a line and cuts into visible segments. Return values used for - // polygon clipping: - // 0: there were intersections or the line was empty. - // 1: no intersections. - // 2: there were intersections, and the first and last segments should be - // rejoined. - function clipLine(listener) { - var point0, // previous point - c0, // code for previous point - v0, // visibility of previous point - v00, // visibility of first point - clean; // no intersections - return { - lineStart: function() { - v00 = v0 = false; - clean = 1; - }, - point: function(λ, φ) { - var point1 = [λ, φ], - point2, - v = visible(λ, φ), - c = smallRadius - ? v ? 0 : code(λ, φ) - : v ? code(λ + (λ < 0 ? π : -π), φ) : 0; - if (!point0 && (v00 = v0 = v)) listener.lineStart(); - // Handle degeneracies. - // TODO ignore if not clipping polygons. - if (v !== v0) { - point2 = intersect(point0, point1); - if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) { - point1[0] += ε; - point1[1] += ε; - v = visible(point1[0], point1[1]); - } - } - if (v !== v0) { - clean = 0; - if (v) { - // outside going in - listener.lineStart(); - point2 = intersect(point1, point0); - listener.point(point2[0], point2[1]); - } else { - // inside going out - point2 = intersect(point0, point1); - listener.point(point2[0], point2[1]); - listener.lineEnd(); - } - point0 = point2; - } else if (notHemisphere && point0 && smallRadius ^ v) { - var t; - // If the codes for two points are different, or are both zero, - // and there this segment intersects with the small circle. - if (!(c & c0) && (t = intersect(point1, point0, true))) { - clean = 0; - if (smallRadius) { - listener.lineStart(); - listener.point(t[0][0], t[0][1]); - listener.point(t[1][0], t[1][1]); - listener.lineEnd(); - } else { - listener.point(t[1][0], t[1][1]); - listener.lineEnd(); - listener.lineStart(); - listener.point(t[0][0], t[0][1]); - } - } - } - if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) { - listener.point(point1[0], point1[1]); - } - point0 = point1, v0 = v, c0 = c; - }, - lineEnd: function() { - if (v0) listener.lineEnd(); - point0 = null; - }, - // Rejoin first and last segments if there were intersections and the first - // and last points were visible. - clean: function() { return clean | ((v00 && v0) << 1); } - }; - } - - // Intersects the great circle between a and b with the clip circle. - function intersect(a, b, two) { - var pa = d3_geo_cartesian(a), - pb = d3_geo_cartesian(b); - - // We have two planes, n1.p = d1 and n2.p = d2. - // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). - var n1 = [1, 0, 0], // normal - n2 = d3_geo_cartesianCross(pa, pb), - n2n2 = d3_geo_cartesianDot(n2, n2), - n1n2 = n2[0], // d3_geo_cartesianDot(n1, n2), - determinant = n2n2 - n1n2 * n1n2; - - // Two polar points. - if (!determinant) return !two && a; - - var c1 = cr * n2n2 / determinant, - c2 = -cr * n1n2 / determinant, - n1xn2 = d3_geo_cartesianCross(n1, n2), - A = d3_geo_cartesianScale(n1, c1), - B = d3_geo_cartesianScale(n2, c2); - d3_geo_cartesianAdd(A, B); - - // Solve |p(t)|^2 = 1. - var u = n1xn2, - w = d3_geo_cartesianDot(A, u), - uu = d3_geo_cartesianDot(u, u), - t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1); - - if (t2 < 0) return; - - var t = Math.sqrt(t2), - q = d3_geo_cartesianScale(u, (-w - t) / uu); - d3_geo_cartesianAdd(q, A); - q = d3_geo_spherical(q); - if (!two) return q; - - // Two intersection points. - var λ0 = a[0], - λ1 = b[0], - φ0 = a[1], - φ1 = b[1], - z; - if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z; - var δλ = λ1 - λ0, - polar = abs(δλ - π) < ε, - meridian = polar || δλ < ε; - - if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z; - - // Check that the first point is between a and b. - if (meridian - ? polar - ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) - : φ0 <= q[1] && q[1] <= φ1 - : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) { - var q1 = d3_geo_cartesianScale(u, (-w + t) / uu); - d3_geo_cartesianAdd(q1, A); - return [q, d3_geo_spherical(q1)]; - } - } - - // Generates a 4-bit vector representing the location of a point relative to - // the small circle's bounding box. - function code(λ, φ) { - var r = smallRadius ? radius : π - radius, - code = 0; - if (λ < -r) code |= 1; // left - else if (λ > r) code |= 2; // right - if (φ < -r) code |= 4; // below - else if (φ > r) code |= 8; // above - return code; - } -} - -// Liang–Barsky line clipping. -function d3_geom_clipLine(x0, y0, x1, y1) { - return function(line) { - var a = line.a, - b = line.b, - ax = a.x, - ay = a.y, - bx = b.x, - by = b.y, - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; - - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - if (t0 > 0) line.a = {x: ax + t0 * dx, y: ay + t0 * dy}; - if (t1 < 1) line.b = {x: ax + t1 * dx, y: ay + t1 * dy}; - return line; - }; -} - -var d3_geo_clipExtentMAX = 1e9; - -d3.geo.clipExtent = function() { - var x0, y0, x1, y1, - stream, - clip, - clipExtent = { - stream: function(output) { - if (stream) stream.valid = false; - stream = clip(output); - stream.valid = true; // allow caching by d3.geo.path - return stream; - }, - extent: function(_) { - if (!arguments.length) return [[x0, y0], [x1, y1]]; - clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]); - if (stream) stream.valid = false, stream = null; - return clipExtent; - } - }; - return clipExtent.extent([[0, 0], [960, 500]]); -}; - -function d3_geo_clipExtent(x0, y0, x1, y1) { - return function(listener) { - var listener_ = listener, - bufferListener = d3_geo_clipBufferListener(), - clipLine = d3_geom_clipLine(x0, y0, x1, y1), - segments, - polygon, - ring; - - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - listener = bufferListener; - segments = []; - polygon = []; - clean = true; - }, - polygonEnd: function() { - listener = listener_; - segments = d3.merge(segments); - var clipStartInside = insidePolygon([x0, y1]), - inside = clean && clipStartInside, - visible = segments.length; - if (inside || visible) { - listener.polygonStart(); - if (inside) { - listener.lineStart(); - interpolate(null, null, 1, listener); - listener.lineEnd(); - } - if (visible) { - d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener); - } - listener.polygonEnd(); - } - segments = polygon = ring = null; - } - }; - - function insidePolygon(p) { - var wn = 0, // the winding number counter - n = polygon.length, - y = p[1]; - - for (var i = 0; i < n; ++i) { - for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) { - b = v[j]; - if (a[1] <= y) { - if (b[1] > y && isLeft(a, b, p) > 0) ++wn; - } else { - if (b[1] <= y && isLeft(a, b, p) < 0) --wn; - } - a = b; - } - } - return wn !== 0; - } - - function isLeft(a, b, c) { - return (b[0] - a[0]) * (c[1] - a[1]) - (c[0] - a[0]) * (b[1] - a[1]); - } - - function interpolate(from, to, direction, listener) { - var a = 0, a1 = 0; - if (from == null || - (a = corner(from, direction)) !== (a1 = corner(to, direction)) || - comparePoints(from, to) < 0 ^ direction > 0) { - do { - listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); - } while ((a = (a + direction + 4) % 4) !== a1); - } else { - listener.point(to[0], to[1]); - } - } - - function pointVisible(x, y) { - return x0 <= x && x <= x1 && y0 <= y && y <= y1; - } - - function point(x, y) { - if (pointVisible(x, y)) listener.point(x, y); - } - - var x__, y__, v__, // first point - x_, y_, v_, // previous point - first, - clean; - - function lineStart() { - clip.point = linePoint; - if (polygon) polygon.push(ring = []); - first = true; - v_ = false; - x_ = y_ = NaN; - } - - function lineEnd() { - // TODO rather than special-case polygons, simply handle them separately. - // Ideally, coincident intersection points should be jittered to avoid - // clipping issues. - if (segments) { - linePoint(x__, y__); - if (v__ && v_) bufferListener.rejoin(); - segments.push(bufferListener.buffer()); - } - clip.point = point; - if (v_) listener.lineEnd(); - } - - function linePoint(x, y) { - x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x)); - y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y)); - var v = pointVisible(x, y); - if (polygon) ring.push([x, y]); - if (first) { - x__ = x, y__ = y, v__ = v; - first = false; - if (v) { - listener.lineStart(); - listener.point(x, y); - } - } else { - if (v && v_) listener.point(x, y); - else { - var l = {a: {x: x_, y: y_}, b: {x: x, y: y}}; - if (clipLine(l)) { - if (!v_) { - listener.lineStart(); - listener.point(l.a.x, l.a.y); - } - listener.point(l.b.x, l.b.y); - if (!v) listener.lineEnd(); - clean = false; - } else if (v) { - listener.lineStart(); - listener.point(x, y); - clean = false; - } - } - } - x_ = x, y_ = y, v_ = v; - } - - return clip; - }; - - function corner(p, direction) { - return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 - : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 - : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 - : direction > 0 ? 3 : 2; // abs(p[1] - y1) < ε - } - - function compare(a, b) { - return comparePoints(a.x, b.x); - } - - function comparePoints(a, b) { - var ca = corner(a, 1), - cb = corner(b, 1); - return ca !== cb ? ca - cb - : ca === 0 ? b[1] - a[1] - : ca === 1 ? a[0] - b[0] - : ca === 2 ? a[1] - b[1] - : b[0] - a[0]; - } -} -function d3_geo_compose(a, b) { - - function compose(x, y) { - return x = a(x, y), b(x[0], x[1]); - } - - if (a.invert && b.invert) compose.invert = function(x, y) { - return x = b.invert(x, y), x && a.invert(x[0], x[1]); - }; - - return compose; -} - -function d3_geo_conic(projectAt) { - var φ0 = 0, - φ1 = π / 3, - m = d3_geo_projectionMutator(projectAt), - p = m(φ0, φ1); - - p.parallels = function(_) { - if (!arguments.length) return [φ0 / π * 180, φ1 / π * 180]; - return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180); - }; - - return p; -} - -function d3_geo_conicEqualArea(φ0, φ1) { - var sinφ0 = Math.sin(φ0), - n = (sinφ0 + Math.sin(φ1)) / 2, - C = 1 + sinφ0 * (2 * n - sinφ0), - ρ0 = Math.sqrt(C) / n; - - function forward(λ, φ) { - var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n; - return [ - ρ * Math.sin(λ *= n), - ρ0 - ρ * Math.cos(λ) - ]; - } - - forward.invert = function(x, y) { - var ρ0_y = ρ0 - y; - return [ - Math.atan2(x, ρ0_y) / n, - d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) - ]; - }; - - return forward; -} - -(d3.geo.conicEqualArea = function() { - return d3_geo_conic(d3_geo_conicEqualArea); -}).raw = d3_geo_conicEqualArea; - -// ESRI:102003 -d3.geo.albers = function() { - return d3.geo.conicEqualArea() - .rotate([96, 0]) - .center([-.6, 38.7]) - .parallels([29.5, 45.5]) - .scale(1070); -}; - -// A composite projection for the United States, configured by default for -// 960×500. Also works quite well at 960×600 with scale 1285. The set of -// standard parallels for each region comes from USGS, which is published here: -// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers -d3.geo.albersUsa = function() { - var lower48 = d3.geo.albers(); - - // EPSG:3338 - var alaska = d3.geo.conicEqualArea() - .rotate([154, 0]) - .center([-2, 58.5]) - .parallels([55, 65]); - - // ESRI:102007 - var hawaii = d3.geo.conicEqualArea() - .rotate([157, 0]) - .center([-3, 19.9]) - .parallels([8, 18]); - - var point, - pointStream = {point: function(x, y) { point = [x, y]; }}, - lower48Point, - alaskaPoint, - hawaiiPoint; - - function albersUsa(coordinates) { - var x = coordinates[0], y = coordinates[1]; - point = null; - (lower48Point(x, y), point) - || (alaskaPoint(x, y), point) - || hawaiiPoint(x, y); - return point; - } - - albersUsa.invert = function(coordinates) { - var k = lower48.scale(), - t = lower48.translate(), - x = (coordinates[0] - t[0]) / k, - y = (coordinates[1] - t[1]) / k; - return (y >= .120 && y < .234 && x >= -.425 && x < -.214 ? alaska - : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii - : lower48).invert(coordinates); - }; - - // A naïve multi-projection stream. - // The projections must have mutually exclusive clip regions on the sphere, - // as this will avoid emitting interleaving lines and polygons. - albersUsa.stream = function(stream) { - var lower48Stream = lower48.stream(stream), - alaskaStream = alaska.stream(stream), - hawaiiStream = hawaii.stream(stream); - return { - point: function(x, y) { - lower48Stream.point(x, y); - alaskaStream.point(x, y); - hawaiiStream.point(x, y); - }, - sphere: function() { - lower48Stream.sphere(); - alaskaStream.sphere(); - hawaiiStream.sphere(); - }, - lineStart: function() { - lower48Stream.lineStart(); - alaskaStream.lineStart(); - hawaiiStream.lineStart(); - }, - lineEnd: function() { - lower48Stream.lineEnd(); - alaskaStream.lineEnd(); - hawaiiStream.lineEnd(); - }, - polygonStart: function() { - lower48Stream.polygonStart(); - alaskaStream.polygonStart(); - hawaiiStream.polygonStart(); - }, - polygonEnd: function() { - lower48Stream.polygonEnd(); - alaskaStream.polygonEnd(); - hawaiiStream.polygonEnd(); - } - }; - }; - - albersUsa.precision = function(_) { - if (!arguments.length) return lower48.precision(); - lower48.precision(_); - alaska.precision(_); - hawaii.precision(_); - return albersUsa; - }; - - albersUsa.scale = function(_) { - if (!arguments.length) return lower48.scale(); - lower48.scale(_); - alaska.scale(_ * .35); - hawaii.scale(_); - return albersUsa.translate(lower48.translate()); - }; - - albersUsa.translate = function(_) { - if (!arguments.length) return lower48.translate(); - var k = lower48.scale(), x = +_[0], y = +_[1]; - - lower48Point = lower48 - .translate(_) - .clipExtent([[x - .455 * k, y - .238 * k], [x + .455 * k, y + .238 * k]]) - .stream(pointStream).point; - - alaskaPoint = alaska - .translate([x - .307 * k, y + .201 * k]) - .clipExtent([[x - .425 * k + ε, y + .120 * k + ε], [x - .214 * k - ε, y + .234 * k - ε]]) - .stream(pointStream).point; - - hawaiiPoint = hawaii - .translate([x - .205 * k, y + .212 * k]) - .clipExtent([[x - .214 * k + ε, y + .166 * k + ε], [x - .115 * k - ε, y + .234 * k - ε]]) - .stream(pointStream).point; - - return albersUsa; - }; - - return albersUsa.scale(1070); -}; - -d3.geo.bounds = (function() { - var λ0, φ0, λ1, φ1, // bounds - λ_, // previous λ-coordinate - λ__, φ__, // first point - p0, // previous 3D point - dλSum, - ranges, - range; - - var bound = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - - polygonStart: function() { - bound.point = ringPoint; - bound.lineStart = ringStart; - bound.lineEnd = ringEnd; - dλSum = 0; - d3_geo_area.polygonStart(); - }, - polygonEnd: function() { - d3_geo_area.polygonEnd(); - bound.point = point; - bound.lineStart = lineStart; - bound.lineEnd = lineEnd; - if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); - else if (dλSum > ε) φ1 = 90; - else if (dλSum < -ε) φ0 = -90; - range[0] = λ0, range[1] = λ1; - } - }; - - function point(λ, φ) { - ranges.push(range = [λ0 = λ, λ1 = λ]); - if (φ < φ0) φ0 = φ; - if (φ > φ1) φ1 = φ; - } - - function linePoint(λ, φ) { - var p = d3_geo_cartesian([λ * d3_radians, φ * d3_radians]); - if (p0) { - var normal = d3_geo_cartesianCross(p0, p), - equatorial = [normal[1], -normal[0], 0], - inflection = d3_geo_cartesianCross(equatorial, normal); - d3_geo_cartesianNormalize(inflection); - inflection = d3_geo_spherical(inflection); - var dλ = λ - λ_, - s = dλ > 0 ? 1 : -1, - λi = inflection[0] * d3_degrees * s, - antimeridian = abs(dλ) > 180; - if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) { - var φi = inflection[1] * d3_degrees; - if (φi > φ1) φ1 = φi; - } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) { - var φi = -inflection[1] * d3_degrees; - if (φi < φ0) φ0 = φi; - } else { - if (φ < φ0) φ0 = φ; - if (φ > φ1) φ1 = φ; - } - if (antimeridian) { - if (λ < λ_) { - if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ; - } else { - if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ; - } - } else { - if (λ1 >= λ0) { - if (λ < λ0) λ0 = λ; - if (λ > λ1) λ1 = λ; - } else { - if (λ > λ_) { - if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ; - } else { - if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ; - } - } - } - } else { - point(λ, φ); - } - p0 = p, λ_ = λ; - } - - function lineStart() { bound.point = linePoint; } - function lineEnd() { - range[0] = λ0, range[1] = λ1; - bound.point = point; - p0 = null; - } - - function ringPoint(λ, φ) { - if (p0) { - var dλ = λ - λ_; - dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ; - } else λ__ = λ, φ__ = φ; - d3_geo_area.point(λ, φ); - linePoint(λ, φ); - } - - function ringStart() { - d3_geo_area.lineStart(); - } - - function ringEnd() { - ringPoint(λ__, φ__); - d3_geo_area.lineEnd(); - if (abs(dλSum) > ε) λ0 = -(λ1 = 180); - range[0] = λ0, range[1] = λ1; - p0 = null; - } - - // Finds the left-right distance between two longitudes. - // This is almost the same as (λ1 - λ0 + 360°) % 360°, except that we want - // the distance between ±180° to be 360°. - function angle(λ0, λ1) { return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1; } - - function compareRanges(a, b) { return a[0] - b[0]; } - - function withinRange(x, range) { - return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; - } - - return function(feature) { - φ1 = λ1 = -(λ0 = φ0 = Infinity); - ranges = []; - - d3.geo.stream(feature, bound); - - var n = ranges.length; - if (n) { - // First, sort ranges by their minimum longitudes. - ranges.sort(compareRanges); - - // Then, merge any ranges that overlap. - for (var i = 1, a = ranges[0], b, merged = [a]; i < n; ++i) { - b = ranges[i]; - if (withinRange(b[0], a) || withinRange(b[1], a)) { - if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; - if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; - } else { - merged.push(a = b); - } - } - - // Finally, find the largest gap between the merged ranges. - // The final bounding box will be the inverse of this gap. - var best = -Infinity, dλ; - for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) { - b = merged[i]; - if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1]; - } - } - ranges = range = null; - - return λ0 === Infinity || φ0 === Infinity - ? [[NaN, NaN], [NaN, NaN]] - : [[λ0, φ0], [λ1, φ1]]; - }; -})(); - -d3.geo.centroid = function(object) { - d3_geo_centroidW0 = d3_geo_centroidW1 = - d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = - d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = - d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0; - d3.geo.stream(object, d3_geo_centroid); - - var x = d3_geo_centroidX2, - y = d3_geo_centroidY2, - z = d3_geo_centroidZ2, - m = x * x + y * y + z * z; - - // If the area-weighted centroid is undefined, fall back to length-weighted centroid. - if (m < ε2) { - x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1; - // If the feature has zero length, fall back to arithmetic mean of point vectors. - if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0; - m = x * x + y * y + z * z; - // If the feature still has an undefined centroid, then return. - if (m < ε2) return [NaN, NaN]; - } - - return [Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees]; -}; - -var d3_geo_centroidW0, - d3_geo_centroidW1, - d3_geo_centroidX0, - d3_geo_centroidY0, - d3_geo_centroidZ0, - d3_geo_centroidX1, - d3_geo_centroidY1, - d3_geo_centroidZ1, - d3_geo_centroidX2, - d3_geo_centroidY2, - d3_geo_centroidZ2; - -var d3_geo_centroid = { - sphere: d3_noop, - point: d3_geo_centroidPoint, - lineStart: d3_geo_centroidLineStart, - lineEnd: d3_geo_centroidLineEnd, - polygonStart: function() { - d3_geo_centroid.lineStart = d3_geo_centroidRingStart; - }, - polygonEnd: function() { - d3_geo_centroid.lineStart = d3_geo_centroidLineStart; - } -}; - -// Arithmetic mean of Cartesian vectors. -function d3_geo_centroidPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ)); -} - -function d3_geo_centroidPointXYZ(x, y, z) { - ++d3_geo_centroidW0; - d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0; - d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0; - d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0; -} - -function d3_geo_centroidLineStart() { - var x0, y0, z0; // previous point - - d3_geo_centroid.point = function(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - x0 = cosφ * Math.cos(λ); - y0 = cosφ * Math.sin(λ); - z0 = Math.sin(φ); - d3_geo_centroid.point = nextPoint; - d3_geo_centroidPointXYZ(x0, y0, z0); - }; - - function nextPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians), - x = cosφ * Math.cos(λ), - y = cosφ * Math.sin(λ), - z = Math.sin(φ), - w = Math.atan2( - Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), - x0 * x + y0 * y + z0 * z); - d3_geo_centroidW1 += w; - d3_geo_centroidX1 += w * (x0 + (x0 = x)); - d3_geo_centroidY1 += w * (y0 + (y0 = y)); - d3_geo_centroidZ1 += w * (z0 + (z0 = z)); - d3_geo_centroidPointXYZ(x0, y0, z0); - } -} - -function d3_geo_centroidLineEnd() { - d3_geo_centroid.point = d3_geo_centroidPoint; -} - -// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, -// J. Applied Mechanics 42, 239 (1975). -function d3_geo_centroidRingStart() { - var λ00, φ00, // first point - x0, y0, z0; // previous point - - d3_geo_centroid.point = function(λ, φ) { - λ00 = λ, φ00 = φ; - d3_geo_centroid.point = nextPoint; - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians); - x0 = cosφ * Math.cos(λ); - y0 = cosφ * Math.sin(λ); - z0 = Math.sin(φ); - d3_geo_centroidPointXYZ(x0, y0, z0); - }; - - d3_geo_centroid.lineEnd = function() { - nextPoint(λ00, φ00); - d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd; - d3_geo_centroid.point = d3_geo_centroidPoint; - }; - - function nextPoint(λ, φ) { - λ *= d3_radians; - var cosφ = Math.cos(φ *= d3_radians), - x = cosφ * Math.cos(λ), - y = cosφ * Math.sin(λ), - z = Math.sin(φ), - cx = y0 * z - z0 * y, - cy = z0 * x - x0 * z, - cz = x0 * y - y0 * x, - m = Math.sqrt(cx * cx + cy * cy + cz * cz), - u = x0 * x + y0 * y + z0 * z, - v = m && -d3_acos(u) / m, // area weight - w = Math.atan2(m, u); // line weight - d3_geo_centroidX2 += v * cx; - d3_geo_centroidY2 += v * cy; - d3_geo_centroidZ2 += v * cz; - d3_geo_centroidW1 += w; - d3_geo_centroidX1 += w * (x0 + (x0 = x)); - d3_geo_centroidY1 += w * (y0 + (y0 = y)); - d3_geo_centroidZ1 += w * (z0 + (z0 = z)); - d3_geo_centroidPointXYZ(x0, y0, z0); - } -} - -// TODO Unify this code with d3.geom.polygon area? - -var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = { - point: d3_noop, - lineStart: d3_noop, - lineEnd: d3_noop, - - // Only count area for polygon rings. - polygonStart: function() { - d3_geo_pathAreaPolygon = 0; - d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart; - }, - polygonEnd: function() { - d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop; - d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2); - } -}; - -function d3_geo_pathAreaRingStart() { - var x00, y00, x0, y0; - - // For the first point, … - d3_geo_pathArea.point = function(x, y) { - d3_geo_pathArea.point = nextPoint; - x00 = x0 = x, y00 = y0 = y; - }; - - // For subsequent points, … - function nextPoint(x, y) { - d3_geo_pathAreaPolygon += y0 * x - x0 * y; - x0 = x, y0 = y; - } - - // For the last point, return to the start. - d3_geo_pathArea.lineEnd = function() { - nextPoint(x00, y00); - }; -} - -var d3_geo_pathBoundsX0, - d3_geo_pathBoundsY0, - d3_geo_pathBoundsX1, - d3_geo_pathBoundsY1; - -var d3_geo_pathBounds = { - point: d3_geo_pathBoundsPoint, - lineStart: d3_noop, - lineEnd: d3_noop, - polygonStart: d3_noop, - polygonEnd: d3_noop -}; - -function d3_geo_pathBoundsPoint(x, y) { - if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x; - if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x; - if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y; - if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y; -} -function d3_geo_pathBuffer() { - var pointCircle = d3_geo_pathBufferCircle(4.5), - buffer = []; - - var stream = { - point: point, - - // While inside a line, override point to moveTo then lineTo. - lineStart: function() { stream.point = pointLineStart; }, - lineEnd: lineEnd, - - // While inside a polygon, override lineEnd to closePath. - polygonStart: function() { stream.lineEnd = lineEndPolygon; }, - polygonEnd: function() { stream.lineEnd = lineEnd; stream.point = point; }, - - pointRadius: function(_) { - pointCircle = d3_geo_pathBufferCircle(_); - return stream; - }, - - result: function() { - if (buffer.length) { - var result = buffer.join(""); - buffer = []; - return result; - } - } - }; - - function point(x, y) { - buffer.push("M", x, ",", y, pointCircle); - } - - function pointLineStart(x, y) { - buffer.push("M", x, ",", y); - stream.point = pointLine; - } - - function pointLine(x, y) { - buffer.push("L", x, ",", y); - } - - function lineEnd() { - stream.point = point; - } - - function lineEndPolygon() { - buffer.push("Z"); - } - - return stream; -} - -function d3_geo_pathBufferCircle(radius) { - return "m0," + radius - + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius - + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius - + "z"; -} - -// TODO Unify this code with d3.geom.polygon centroid? -// TODO Enforce positive area for exterior, negative area for interior? - -var d3_geo_pathCentroid = { - point: d3_geo_pathCentroidPoint, - - // For lines, weight by length. - lineStart: d3_geo_pathCentroidLineStart, - lineEnd: d3_geo_pathCentroidLineEnd, - - // For polygons, weight by area. - polygonStart: function() { - d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart; - }, - polygonEnd: function() { - d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint; - d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart; - d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd; - } -}; - -function d3_geo_pathCentroidPoint(x, y) { - d3_geo_centroidX0 += x; - d3_geo_centroidY0 += y; - ++d3_geo_centroidZ0; -} - -function d3_geo_pathCentroidLineStart() { - var x0, y0; - - d3_geo_pathCentroid.point = function(x, y) { - d3_geo_pathCentroid.point = nextPoint; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); - }; - - function nextPoint(x, y) { - var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy); - d3_geo_centroidX1 += z * (x0 + x) / 2; - d3_geo_centroidY1 += z * (y0 + y) / 2; - d3_geo_centroidZ1 += z; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); - } -} - -function d3_geo_pathCentroidLineEnd() { - d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint; -} - -function d3_geo_pathCentroidRingStart() { - var x00, y00, x0, y0; - - // For the first point, … - d3_geo_pathCentroid.point = function(x, y) { - d3_geo_pathCentroid.point = nextPoint; - d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y); - }; - - // For subsequent points, … - function nextPoint(x, y) { - var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy); - d3_geo_centroidX1 += z * (x0 + x) / 2; - d3_geo_centroidY1 += z * (y0 + y) / 2; - d3_geo_centroidZ1 += z; - - z = y0 * x - x0 * y; - d3_geo_centroidX2 += z * (x0 + x); - d3_geo_centroidY2 += z * (y0 + y); - d3_geo_centroidZ2 += z * 3; - d3_geo_pathCentroidPoint(x0 = x, y0 = y); - } - - // For the last point, return to the start. - d3_geo_pathCentroid.lineEnd = function() { - nextPoint(x00, y00); - }; -} - -function d3_geo_pathContext(context) { - var pointRadius = 4.5; - - var stream = { - point: point, - - // While inside a line, override point to moveTo then lineTo. - lineStart: function() { stream.point = pointLineStart; }, - lineEnd: lineEnd, - - // While inside a polygon, override lineEnd to closePath. - polygonStart: function() { stream.lineEnd = lineEndPolygon; }, - polygonEnd: function() { stream.lineEnd = lineEnd; stream.point = point; }, - - pointRadius: function(_) { - pointRadius = _; - return stream; - }, - - result: d3_noop - }; - - function point(x, y) { - context.moveTo(x, y); - context.arc(x, y, pointRadius, 0, τ); - } - - function pointLineStart(x, y) { - context.moveTo(x, y); - stream.point = pointLine; - } - - function pointLine(x, y) { - context.lineTo(x, y); - } - - function lineEnd() { - stream.point = point; - } - - function lineEndPolygon() { - context.closePath(); - } - - return stream; -} - -function d3_geo_resample(project) { - var δ2 = .5, // precision, px² - cosMinDistance = Math.cos(30 * d3_radians), // cos(minimum angular distance) - maxDepth = 16; - - function resample(stream) { - var λ00, φ00, x00, y00, a00, b00, c00, // first point - λ0, x0, y0, a0, b0, c0; // previous point - - var resample = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { stream.polygonStart(); resample.lineStart = ringStart; }, - polygonEnd: function() { stream.polygonEnd(); resample.lineStart = lineStart; } - }; - - function point(x, y) { - x = project(x, y); - stream.point(x[0], x[1]); - } - - function lineStart() { - x0 = NaN; - resample.point = linePoint; - stream.lineStart(); - } - - function linePoint(λ, φ) { - var c = d3_geo_cartesian([λ, φ]), p = project(λ, φ); - resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); - stream.point(x0, y0); - } - - function lineEnd() { - resample.point = point; - stream.lineEnd(); - } - - function ringStart() { - lineStart(); - resample.point = ringPoint; - resample.lineEnd = ringEnd; - } - - function ringPoint(λ, φ) { - linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; - resample.point = linePoint; - } - - function ringEnd() { - resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream); - resample.lineEnd = lineEnd; - lineEnd(); - } - - return resample; - } - - function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) { - var dx = x1 - x0, - dy = y1 - y0, - d2 = dx * dx + dy * dy; - if (d2 > 4 * δ2 && depth--) { - var a = a0 + a1, - b = b0 + b1, - c = c0 + c1, - m = Math.sqrt(a * a + b * b + c * c), - φ2 = Math.asin(c /= m), - λ2 = abs(abs(c) - 1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), - p = project(λ2, φ2), - x2 = p[0], - y2 = p[1], - dx2 = x2 - x0, - dy2 = y2 - y0, - dz = dy * dx2 - dx * dy2; - if (dz * dz / d2 > δ2 // perpendicular projected distance - || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 // midpoint close to an end - || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance - resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream); - stream.point(x2, y2); - resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream); - } - } - } - - resample.precision = function(_) { - if (!arguments.length) return Math.sqrt(δ2); - maxDepth = (δ2 = _ * _) > 0 && 16; - return resample; - }; - - return resample; -} - -d3.geo.transform = function(methods) { - return { - stream: function(stream) { - var transform = new d3_geo_transform(stream); - for (var k in methods) transform[k] = methods[k]; - return transform; - } - }; -}; - -function d3_geo_transform(stream) { - this.stream = stream; -} - -d3_geo_transform.prototype = { - point: function(x, y) { this.stream.point(x, y); }, - sphere: function() { this.stream.sphere(); }, - lineStart: function() { this.stream.lineStart(); }, - lineEnd: function() { this.stream.lineEnd(); }, - polygonStart: function() { this.stream.polygonStart(); }, - polygonEnd: function() { this.stream.polygonEnd(); } -}; - -d3.geo.path = function() { - var pointRadius = 4.5, - projection, - context, - projectStream, - contextStream, - cacheStream; - - function path(object) { - if (object) { - if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); - if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream); - d3.geo.stream(object, cacheStream); - } - return contextStream.result(); - } - - path.area = function(object) { - d3_geo_pathAreaSum = 0; - d3.geo.stream(object, projectStream(d3_geo_pathArea)); - return d3_geo_pathAreaSum; - }; - - path.centroid = function(object) { - d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = - d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = - d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0; - d3.geo.stream(object, projectStream(d3_geo_pathCentroid)); - return d3_geo_centroidZ2 ? [d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2] - : d3_geo_centroidZ1 ? [d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1] - : d3_geo_centroidZ0 ? [d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0] - : [NaN, NaN]; - }; - - path.bounds = function(object) { - d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity); - d3.geo.stream(object, projectStream(d3_geo_pathBounds)); - return [[d3_geo_pathBoundsX0, d3_geo_pathBoundsY0], [d3_geo_pathBoundsX1, d3_geo_pathBoundsY1]]; - }; - - path.projection = function(_) { - if (!arguments.length) return projection; - projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity; - return reset(); - }; - - path.context = function(_) { - if (!arguments.length) return context; - contextStream = (context = _) == null ? new d3_geo_pathBuffer : new d3_geo_pathContext(_); - if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); - return reset(); - }; - - path.pointRadius = function(_) { - if (!arguments.length) return pointRadius; - pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); - return path; - }; - - function reset() { - cacheStream = null; - return path; - } - - return path.projection(d3.geo.albersUsa()).context(null); -}; - -function d3_geo_pathProjectStream(project) { - var resample = d3_geo_resample(function(x, y) { return project([x * d3_degrees, y * d3_degrees]); }); - return function(stream) { - var transform = new d3_geo_transform(stream = resample(stream)); - transform.point = function(x, y) { stream.point(x * d3_radians, y * d3_radians); }; - return transform; - }; -} - -d3.geo.projection = d3_geo_projection; -d3.geo.projectionMutator = d3_geo_projectionMutator; - -function d3_geo_projection(project) { - return d3_geo_projectionMutator(function() { return project; })(); -} - -function d3_geo_projectionMutator(projectAt) { - var project, - rotate, - projectRotate, - projectResample = d3_geo_resample(function(x, y) { x = project(x, y); return [x[0] * k + δx, δy - x[1] * k]; }), - k = 150, // scale - x = 480, y = 250, // translate - λ = 0, φ = 0, // center - δλ = 0, δφ = 0, δγ = 0, // rotate - δx, δy, // center - preclip = d3_geo_clipAntimeridian, - postclip = d3_identity, - clipAngle = null, - clipExtent = null, - stream; - - function projection(point) { - point = projectRotate(point[0] * d3_radians, point[1] * d3_radians); - return [point[0] * k + δx, δy - point[1] * k]; - } - - function invert(point) { - point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k); - return point && [point[0] * d3_degrees, point[1] * d3_degrees]; - } - - projection.stream = function(output) { - if (stream) stream.valid = false; - stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output)))); - stream.valid = true; // allow caching by d3.geo.path - return stream; - }; - - projection.clipAngle = function(_) { - if (!arguments.length) return clipAngle; - preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians); - return invalidate(); - }; - - projection.clipExtent = function(_) { - if (!arguments.length) return clipExtent; - clipExtent = _; - postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity; - return invalidate(); - }; - - projection.scale = function(_) { - if (!arguments.length) return k; - k = +_; - return reset(); - }; - - projection.translate = function(_) { - if (!arguments.length) return [x, y]; - x = +_[0]; - y = +_[1]; - return reset(); - }; - - projection.center = function(_) { - if (!arguments.length) return [λ * d3_degrees, φ * d3_degrees]; - λ = _[0] % 360 * d3_radians; - φ = _[1] % 360 * d3_radians; - return reset(); - }; - - projection.rotate = function(_) { - if (!arguments.length) return [δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees]; - δλ = _[0] % 360 * d3_radians; - δφ = _[1] % 360 * d3_radians; - δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0; - return reset(); - }; - - d3.rebind(projection, projectResample, "precision"); - - function reset() { - projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project); - var center = project(λ, φ); - δx = x - center[0] * k; - δy = y + center[1] * k; - return invalidate(); - } - - function invalidate() { - if (stream) stream.valid = false, stream = null; - return projection; - } - - return function() { - project = projectAt.apply(this, arguments); - projection.invert = project.invert && invert; - return reset(); - }; -} - -function d3_geo_projectionRadians(stream) { - var transform = new d3_geo_transform(stream); - transform.point = function(λ, φ) { - stream.point(λ * d3_radians, φ * d3_radians); - }; - return transform; -} - -function d3_geo_mercator(λ, φ) { - return [λ, Math.log(Math.tan(π / 4 + φ / 2))]; -} - -d3_geo_mercator.invert = function(x, y) { - return [x, 2 * Math.atan(Math.exp(y)) - halfπ]; -}; - -function d3_geo_mercatorProjection(project) { - var m = d3_geo_projection(project), - scale = m.scale, - translate = m.translate, - clipExtent = m.clipExtent, - clipAuto; - - m.scale = function() { - var v = scale.apply(m, arguments); - return v === m ? (clipAuto ? m.clipExtent(null) : m) : v; - }; - - m.translate = function() { - var v = translate.apply(m, arguments); - return v === m ? (clipAuto ? m.clipExtent(null) : m) : v; - }; - - m.clipExtent = function(_) { - var v = clipExtent.apply(m, arguments); - if (v === m) { - if (clipAuto = _ == null) { - var k = π * scale(), t = translate(); - clipExtent([[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]]); - } - } else if (clipAuto) { - v = null; - } - return v; - }; - - return m.clipExtent(null); -} - -(d3.geo.mercator = function() { - return d3_geo_mercatorProjection(d3_geo_mercator); -}).raw = d3_geo_mercator; -d3.geom = {}; - -d3.geom.polygon = function(coordinates) { - d3_subclass(coordinates, d3_geom_polygonPrototype); - return coordinates; -}; - -var d3_geom_polygonPrototype = d3.geom.polygon.prototype = []; - -d3_geom_polygonPrototype.area = function() { - var i = -1, - n = this.length, - a, - b = this[n - 1], - area = 0; - - while (++i < n) { - a = b; - b = this[i]; - area += a[1] * b[0] - a[0] * b[1]; - } - - return area * .5; -}; - -d3_geom_polygonPrototype.centroid = function(k) { - var i = -1, - n = this.length, - x = 0, - y = 0, - a, - b = this[n - 1], - c; - - if (!arguments.length) k = -1 / (6 * this.area()); - - while (++i < n) { - a = b; - b = this[i]; - c = a[0] * b[1] - b[0] * a[1]; - x += (a[0] + b[0]) * c; - y += (a[1] + b[1]) * c; - } - - return [x * k, y * k]; -}; - -// The Sutherland-Hodgman clipping algorithm. -// Note: requires the clip polygon to be counterclockwise and convex. -d3_geom_polygonPrototype.clip = function(subject) { - var input, - closed = d3_geom_polygonClosed(subject), - i = -1, - n = this.length - d3_geom_polygonClosed(this), - j, - m, - a = this[n - 1], - b, - c, - d; - - while (++i < n) { - input = subject.slice(); - subject.length = 0; - b = this[i]; - c = input[(m = input.length - closed) - 1]; - j = -1; - while (++j < m) { - d = input[j]; - if (d3_geom_polygonInside(d, a, b)) { - if (!d3_geom_polygonInside(c, a, b)) { - subject.push(d3_geom_polygonIntersect(c, d, a, b)); - } - subject.push(d); - } else if (d3_geom_polygonInside(c, a, b)) { - subject.push(d3_geom_polygonIntersect(c, d, a, b)); - } - c = d; - } - if (closed) subject.push(subject[0]); - a = b; - } - - return subject; -}; - -function d3_geom_polygonInside(p, a, b) { - return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]); -} - -// Intersect two infinite lines cd and ab. -function d3_geom_polygonIntersect(c, d, a, b) { - var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, - y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, - ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21); - return [x1 + ua * x21, y1 + ua * y21]; -} - -// Returns true if the polygon is closed. -function d3_geom_polygonClosed(coordinates) { - var a = coordinates[0], - b = coordinates[coordinates.length - 1]; - return !(a[0] - b[0] || a[1] - b[1]); -} - -var d3_ease_default = function() { return d3_identity; }; - -var d3_ease = d3.map({ - linear: d3_ease_default, - poly: d3_ease_poly, - quad: function() { return d3_ease_quad; }, - cubic: function() { return d3_ease_cubic; }, - sin: function() { return d3_ease_sin; }, - exp: function() { return d3_ease_exp; }, - circle: function() { return d3_ease_circle; }, - elastic: d3_ease_elastic, - back: d3_ease_back, - bounce: function() { return d3_ease_bounce; } -}); - -var d3_ease_mode = d3.map({ - "in": d3_identity, - "out": d3_ease_reverse, - "in-out": d3_ease_reflect, - "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); } -}); - -d3.ease = function(name) { - var i = name.indexOf("-"), - t = i >= 0 ? name.substring(0, i) : name, - m = i >= 0 ? name.substring(i + 1) : "in"; - t = d3_ease.get(t) || d3_ease_default; - m = d3_ease_mode.get(m) || d3_identity; - return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1)))); -}; - -function d3_ease_clamp(f) { - return function(t) { - return t <= 0 ? 0 : t >= 1 ? 1 : f(t); - }; -} - -function d3_ease_reverse(f) { - return function(t) { - return 1 - f(1 - t); - }; -} - -function d3_ease_reflect(f) { - return function(t) { - return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t))); - }; -} - -function d3_ease_quad(t) { - return t * t; -} - -function d3_ease_cubic(t) { - return t * t * t; -} - -// Optimized clamp(reflect(poly(3))). -function d3_ease_cubicInOut(t) { - if (t <= 0) return 0; - if (t >= 1) return 1; - var t2 = t * t, t3 = t2 * t; - return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75); -} - -function d3_ease_poly(e) { - return function(t) { - return Math.pow(t, e); - }; -} - -function d3_ease_sin(t) { - return 1 - Math.cos(t * halfπ); -} - -function d3_ease_exp(t) { - return Math.pow(2, 10 * (t - 1)); -} - -function d3_ease_circle(t) { - return 1 - Math.sqrt(1 - t * t); -} - -function d3_ease_elastic(a, p) { - var s; - if (arguments.length < 2) p = 0.45; - if (arguments.length) s = p / τ * Math.asin(1 / a); - else a = 1, s = p / 4; - return function(t) { - return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p); - }; -} - -function d3_ease_back(s) { - if (!s) s = 1.70158; - return function(t) { - return t * t * ((s + 1) * t - s); - }; -} - -function d3_ease_bounce(t) { - return t < 1 / 2.75 ? 7.5625 * t * t - : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 - : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 - : 7.5625 * (t -= 2.625 / 2.75) * t + .984375; -} - -function d3_transition(groups, id) { - d3_subclass(groups, d3_transitionPrototype); - - groups.id = id; // Note: read-only! - - return groups; -} - -var d3_transitionPrototype = [], - d3_transitionId = 0, - d3_transitionInheritId, - d3_transitionInherit; - -d3_transitionPrototype.call = d3_selectionPrototype.call; -d3_transitionPrototype.empty = d3_selectionPrototype.empty; -d3_transitionPrototype.node = d3_selectionPrototype.node; -d3_transitionPrototype.size = d3_selectionPrototype.size; - -d3.transition = function(selection) { - return arguments.length - ? (d3_transitionInheritId ? selection.transition() : selection) - : d3_selectionRoot.transition(); -}; - -d3.transition.prototype = d3_transitionPrototype; - - -d3_transitionPrototype.select = function(selector) { - var id = this.id, - subgroups = [], - subgroup, - subnode, - node; - - selector = d3_selection_selector(selector); - - for (var j = -1, m = this.length; ++j < m;) { - subgroups.push(subgroup = []); - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) { - if ("__data__" in node) subnode.__data__ = node.__data__; - d3_transitionNode(subnode, i, id, node.__transition__[id]); - subgroup.push(subnode); - } else { - subgroup.push(null); - } - } - } - - return d3_transition(subgroups, id); -}; - -d3_transitionPrototype.selectAll = function(selector) { - var id = this.id, - subgroups = [], - subgroup, - subnodes, - node, - subnode, - transition; - - selector = d3_selection_selectorAll(selector); - - for (var j = -1, m = this.length; ++j < m;) { - for (var group = this[j], i = -1, n = group.length; ++i < n;) { - if (node = group[i]) { - transition = node.__transition__[id]; - subnodes = selector.call(node, node.__data__, i, j); - subgroups.push(subgroup = []); - for (var k = -1, o = subnodes.length; ++k < o;) { - if (subnode = subnodes[k]) d3_transitionNode(subnode, k, id, transition); - subgroup.push(subnode); - } - } - } - } - - return d3_transition(subgroups, id); -}; - -d3_transitionPrototype.filter = function(filter) { - var subgroups = [], - subgroup, - group, - node; - - if (typeof filter !== "function") filter = d3_selection_filter(filter); - - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - if ((node = group[i]) && filter.call(node, node.__data__, i)) { - subgroup.push(node); - } - } - } - - return d3_transition(subgroups, this.id); -}; -function d3_Color() {} - -d3_Color.prototype.toString = function() { - return this.rgb() + ""; -}; - -d3.hsl = function(h, s, l) { - return arguments.length === 1 - ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) - : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl)) - : d3_hsl(+h, +s, +l); -}; - -function d3_hsl(h, s, l) { - return new d3_Hsl(h, s, l); -} - -function d3_Hsl(h, s, l) { - this.h = h; - this.s = s; - this.l = l; -} - -var d3_hslPrototype = d3_Hsl.prototype = new d3_Color; - -d3_hslPrototype.brighter = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_hsl(this.h, this.s, this.l / k); -}; - -d3_hslPrototype.darker = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_hsl(this.h, this.s, k * this.l); -}; - -d3_hslPrototype.rgb = function() { - return d3_hsl_rgb(this.h, this.s, this.l); -}; - -function d3_hsl_rgb(h, s, l) { - var m1, - m2; - - /* Some simple corrections for h, s and l. */ - h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h; - s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s; - l = l < 0 ? 0 : l > 1 ? 1 : l; - - /* From FvD 13.37, CSS Color Module Level 3 */ - m2 = l <= .5 ? l * (1 + s) : l + s - l * s; - m1 = 2 * l - m2; - - function v(h) { - if (h > 360) h -= 360; - else if (h < 0) h += 360; - if (h < 60) return m1 + (m2 - m1) * h / 60; - if (h < 180) return m2; - if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60; - return m1; - } - - function vv(h) { - return Math.round(v(h) * 255); - } - - return d3_rgb(vv(h + 120), vv(h), vv(h - 120)); -} - -d3.hcl = function(h, c, l) { - return arguments.length === 1 - ? (h instanceof d3_Hcl ? d3_hcl(h.h, h.c, h.l) - : (h instanceof d3_Lab ? d3_lab_hcl(h.l, h.a, h.b) - : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b))) - : d3_hcl(+h, +c, +l); -}; - -function d3_hcl(h, c, l) { - return new d3_Hcl(h, c, l); -} - -function d3_Hcl(h, c, l) { - this.h = h; - this.c = c; - this.l = l; -} - -var d3_hclPrototype = d3_Hcl.prototype = new d3_Color; - -d3_hclPrototype.brighter = function(k) { - return d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1))); -}; - -d3_hclPrototype.darker = function(k) { - return d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1))); -}; - -d3_hclPrototype.rgb = function() { - return d3_hcl_lab(this.h, this.c, this.l).rgb(); -}; - -function d3_hcl_lab(h, c, l) { - if (isNaN(h)) h = 0; - if (isNaN(c)) c = 0; - return d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c); -} - -d3.lab = function(l, a, b) { - return arguments.length === 1 - ? (l instanceof d3_Lab ? d3_lab(l.l, l.a, l.b) - : (l instanceof d3_Hcl ? d3_hcl_lab(l.l, l.c, l.h) - : d3_rgb_lab((l = d3.rgb(l)).r, l.g, l.b))) - : d3_lab(+l, +a, +b); -}; - -function d3_lab(l, a, b) { - return new d3_Lab(l, a, b); -} - -function d3_Lab(l, a, b) { - this.l = l; - this.a = a; - this.b = b; -} - -// Corresponds roughly to RGB brighter/darker -var d3_lab_K = 18; - -// D65 standard referent -var d3_lab_X = 0.950470, - d3_lab_Y = 1, - d3_lab_Z = 1.088830; - -var d3_labPrototype = d3_Lab.prototype = new d3_Color; - -d3_labPrototype.brighter = function(k) { - return d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b); -}; - -d3_labPrototype.darker = function(k) { - return d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b); -}; - -d3_labPrototype.rgb = function() { - return d3_lab_rgb(this.l, this.a, this.b); -}; - -function d3_lab_rgb(l, a, b) { - var y = (l + 16) / 116, - x = y + a / 500, - z = y - b / 200; - x = d3_lab_xyz(x) * d3_lab_X; - y = d3_lab_xyz(y) * d3_lab_Y; - z = d3_lab_xyz(z) * d3_lab_Z; - return d3_rgb( - d3_xyz_rgb( 3.2404542 * x - 1.5371385 * y - 0.4985314 * z), - d3_xyz_rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z), - d3_xyz_rgb( 0.0556434 * x - 0.2040259 * y + 1.0572252 * z) - ); -} - -function d3_lab_hcl(l, a, b) { - return l > 0 - ? d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) - : d3_hcl(NaN, NaN, l); -} - -function d3_lab_xyz(x) { - return x > 0.206893034 ? x * x * x : (x - 4 / 29) / 7.787037; -} -function d3_xyz_lab(x) { - return x > 0.008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29; -} - -function d3_xyz_rgb(r) { - return Math.round(255 * (r <= 0.00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - 0.055)); -} - -d3.rgb = function(r, g, b) { - return arguments.length === 1 - ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) - : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb)) - : d3_rgb(~~r, ~~g, ~~b); -}; - -function d3_rgbNumber(value) { - return d3_rgb(value >> 16, value >> 8 & 0xff, value & 0xff); -} - -function d3_rgbString(value) { - return d3_rgbNumber(value) + ""; -} - -function d3_rgb(r, g, b) { - return new d3_Rgb(r, g, b); -} - -function d3_Rgb(r, g, b) { - this.r = r; - this.g = g; - this.b = b; -} - -var d3_rgbPrototype = d3_Rgb.prototype = new d3_Color; - -d3_rgbPrototype.brighter = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - var r = this.r, - g = this.g, - b = this.b, - i = 30; - if (!r && !g && !b) return d3_rgb(i, i, i); - if (r && r < i) r = i; - if (g && g < i) g = i; - if (b && b < i) b = i; - return d3_rgb(Math.min(255, ~~(r / k)), Math.min(255, ~~(g / k)), Math.min(255, ~~(b / k))); -}; - -d3_rgbPrototype.darker = function(k) { - k = Math.pow(0.7, arguments.length ? k : 1); - return d3_rgb(~~(k * this.r), ~~(k * this.g), ~~(k * this.b)); -}; - -d3_rgbPrototype.hsl = function() { - return d3_rgb_hsl(this.r, this.g, this.b); -}; - -d3_rgbPrototype.toString = function() { - return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b); -}; - -function d3_rgb_hex(v) { - return v < 0x10 - ? "0" + Math.max(0, v).toString(16) - : Math.min(255, v).toString(16); -} - -function d3_rgb_parse(format, rgb, hsl) { - var r = 0, // red channel; int in [0, 255] - g = 0, // green channel; int in [0, 255] - b = 0, // blue channel; int in [0, 255] - m1, // CSS color specification match - m2, // CSS color specification type (e.g., rgb) - name; - - /* Handle hsl, rgb. */ - m1 = /([a-z]+)\((.*)\)/i.exec(format); - if (m1) { - m2 = m1[2].split(","); - switch (m1[1]) { - case "hsl": { - return hsl( - parseFloat(m2[0]), // degrees - parseFloat(m2[1]) / 100, // percentage - parseFloat(m2[2]) / 100 // percentage - ); - } - case "rgb": { - return rgb( - d3_rgb_parseNumber(m2[0]), - d3_rgb_parseNumber(m2[1]), - d3_rgb_parseNumber(m2[2]) - ); - } - } - } - - /* Named colors. */ - if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b); - - /* Hexadecimal colors: #rgb and #rrggbb. */ - if (format != null && format.charAt(0) === "#") { - if (format.length === 4) { - r = format.charAt(1); r += r; - g = format.charAt(2); g += g; - b = format.charAt(3); b += b; - } else if (format.length === 7) { - r = format.substring(1, 3); - g = format.substring(3, 5); - b = format.substring(5, 7); - } - r = parseInt(r, 16); - g = parseInt(g, 16); - b = parseInt(b, 16); - } - - return rgb(r, g, b); -} - -function d3_rgb_hsl(r, g, b) { - var min = Math.min(r /= 255, g /= 255, b /= 255), - max = Math.max(r, g, b), - d = max - min, - h, - s, - l = (max + min) / 2; - if (d) { - s = l < .5 ? d / (max + min) : d / (2 - max - min); - if (r == max) h = (g - b) / d + (g < b ? 6 : 0); - else if (g == max) h = (b - r) / d + 2; - else h = (r - g) / d + 4; - h *= 60; - } else { - h = NaN; - s = l > 0 && l < 1 ? 0 : h; - } - return d3_hsl(h, s, l); -} - -function d3_rgb_lab(r, g, b) { - r = d3_rgb_xyz(r); - g = d3_rgb_xyz(g); - b = d3_rgb_xyz(b); - var x = d3_xyz_lab((0.4124564 * r + 0.3575761 * g + 0.1804375 * b) / d3_lab_X), - y = d3_xyz_lab((0.2126729 * r + 0.7151522 * g + 0.0721750 * b) / d3_lab_Y), - z = d3_xyz_lab((0.0193339 * r + 0.1191920 * g + 0.9503041 * b) / d3_lab_Z); - return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z)); -} - -function d3_rgb_xyz(r) { - return (r /= 255) <= 0.04045 ? r / 12.92 : Math.pow((r + 0.055) / 1.055, 2.4); -} - -function d3_rgb_parseNumber(c) { // either integer or percentage - var f = parseFloat(c); - return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f; -} - -var d3_rgb_names = d3.map({ - aliceblue: 0xf0f8ff, - antiquewhite: 0xfaebd7, - aqua: 0x00ffff, - aquamarine: 0x7fffd4, - azure: 0xf0ffff, - beige: 0xf5f5dc, - bisque: 0xffe4c4, - black: 0x000000, - blanchedalmond: 0xffebcd, - blue: 0x0000ff, - blueviolet: 0x8a2be2, - brown: 0xa52a2a, - burlywood: 0xdeb887, - cadetblue: 0x5f9ea0, - chartreuse: 0x7fff00, - chocolate: 0xd2691e, - coral: 0xff7f50, - cornflowerblue: 0x6495ed, - cornsilk: 0xfff8dc, - crimson: 0xdc143c, - cyan: 0x00ffff, - darkblue: 0x00008b, - darkcyan: 0x008b8b, - darkgoldenrod: 0xb8860b, - darkgray: 0xa9a9a9, - darkgreen: 0x006400, - darkgrey: 0xa9a9a9, - darkkhaki: 0xbdb76b, - darkmagenta: 0x8b008b, - darkolivegreen: 0x556b2f, - darkorange: 0xff8c00, - darkorchid: 0x9932cc, - darkred: 0x8b0000, - darksalmon: 0xe9967a, - darkseagreen: 0x8fbc8f, - darkslateblue: 0x483d8b, - darkslategray: 0x2f4f4f, - darkslategrey: 0x2f4f4f, - darkturquoise: 0x00ced1, - darkviolet: 0x9400d3, - deeppink: 0xff1493, - deepskyblue: 0x00bfff, - dimgray: 0x696969, - dimgrey: 0x696969, - dodgerblue: 0x1e90ff, - firebrick: 0xb22222, - floralwhite: 0xfffaf0, - forestgreen: 0x228b22, - fuchsia: 0xff00ff, - gainsboro: 0xdcdcdc, - ghostwhite: 0xf8f8ff, - gold: 0xffd700, - goldenrod: 0xdaa520, - gray: 0x808080, - green: 0x008000, - greenyellow: 0xadff2f, - grey: 0x808080, - honeydew: 0xf0fff0, - hotpink: 0xff69b4, - indianred: 0xcd5c5c, - indigo: 0x4b0082, - ivory: 0xfffff0, - khaki: 0xf0e68c, - lavender: 0xe6e6fa, - lavenderblush: 0xfff0f5, - lawngreen: 0x7cfc00, - lemonchiffon: 0xfffacd, - lightblue: 0xadd8e6, - lightcoral: 0xf08080, - lightcyan: 0xe0ffff, - lightgoldenrodyellow: 0xfafad2, - lightgray: 0xd3d3d3, - lightgreen: 0x90ee90, - lightgrey: 0xd3d3d3, - lightpink: 0xffb6c1, - lightsalmon: 0xffa07a, - lightseagreen: 0x20b2aa, - lightskyblue: 0x87cefa, - lightslategray: 0x778899, - lightslategrey: 0x778899, - lightsteelblue: 0xb0c4de, - lightyellow: 0xffffe0, - lime: 0x00ff00, - limegreen: 0x32cd32, - linen: 0xfaf0e6, - magenta: 0xff00ff, - maroon: 0x800000, - mediumaquamarine: 0x66cdaa, - mediumblue: 0x0000cd, - mediumorchid: 0xba55d3, - mediumpurple: 0x9370db, - mediumseagreen: 0x3cb371, - mediumslateblue: 0x7b68ee, - mediumspringgreen: 0x00fa9a, - mediumturquoise: 0x48d1cc, - mediumvioletred: 0xc71585, - midnightblue: 0x191970, - mintcream: 0xf5fffa, - mistyrose: 0xffe4e1, - moccasin: 0xffe4b5, - navajowhite: 0xffdead, - navy: 0x000080, - oldlace: 0xfdf5e6, - olive: 0x808000, - olivedrab: 0x6b8e23, - orange: 0xffa500, - orangered: 0xff4500, - orchid: 0xda70d6, - palegoldenrod: 0xeee8aa, - palegreen: 0x98fb98, - paleturquoise: 0xafeeee, - palevioletred: 0xdb7093, - papayawhip: 0xffefd5, - peachpuff: 0xffdab9, - peru: 0xcd853f, - pink: 0xffc0cb, - plum: 0xdda0dd, - powderblue: 0xb0e0e6, - purple: 0x800080, - red: 0xff0000, - rosybrown: 0xbc8f8f, - royalblue: 0x4169e1, - saddlebrown: 0x8b4513, - salmon: 0xfa8072, - sandybrown: 0xf4a460, - seagreen: 0x2e8b57, - seashell: 0xfff5ee, - sienna: 0xa0522d, - silver: 0xc0c0c0, - skyblue: 0x87ceeb, - slateblue: 0x6a5acd, - slategray: 0x708090, - slategrey: 0x708090, - snow: 0xfffafa, - springgreen: 0x00ff7f, - steelblue: 0x4682b4, - tan: 0xd2b48c, - teal: 0x008080, - thistle: 0xd8bfd8, - tomato: 0xff6347, - turquoise: 0x40e0d0, - violet: 0xee82ee, - wheat: 0xf5deb3, - white: 0xffffff, - whitesmoke: 0xf5f5f5, - yellow: 0xffff00, - yellowgreen: 0x9acd32 -}); - -d3_rgb_names.forEach(function(key, value) { - d3_rgb_names.set(key, d3_rgbNumber(value)); -}); - -d3.interpolateRgb = d3_interpolateRgb; - -function d3_interpolateRgb(a, b) { - a = d3.rgb(a); - b = d3.rgb(b); - var ar = a.r, - ag = a.g, - ab = a.b, - br = b.r - ar, - bg = b.g - ag, - bb = b.b - ab; - return function(t) { - return "#" - + d3_rgb_hex(Math.round(ar + br * t)) - + d3_rgb_hex(Math.round(ag + bg * t)) - + d3_rgb_hex(Math.round(ab + bb * t)); - }; -} - -d3.interpolateObject = d3_interpolateObject; - -function d3_interpolateObject(a, b) { - var i = {}, - c = {}, - k; - for (k in a) { - if (k in b) { - i[k] = d3_interpolate(a[k], b[k]); - } else { - c[k] = a[k]; - } - } - for (k in b) { - if (!(k in a)) { - c[k] = b[k]; - } - } - return function(t) { - for (k in i) c[k] = i[k](t); - return c; - }; -} - -d3.interpolateArray = d3_interpolateArray; - -function d3_interpolateArray(a, b) { - var x = [], - c = [], - na = a.length, - nb = b.length, - n0 = Math.min(a.length, b.length), - i; - for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i])); - for (; i < na; ++i) c[i] = a[i]; - for (; i < nb; ++i) c[i] = b[i]; - return function(t) { - for (i = 0; i < n0; ++i) c[i] = x[i](t); - return c; - }; -} -d3.interpolateNumber = d3_interpolateNumber; - -function d3_interpolateNumber(a, b) { - b -= a = +a; - return function(t) { return a + b * t; }; -} - -d3.interpolateString = d3_interpolateString; - -function d3_interpolateString(a, b) { - var m, // current match - i, // current index - j, // current index (for coalescing) - s0 = 0, // start index of current string prefix - s1 = 0, // end index of current string prefix - s = [], // string constants and placeholders - q = [], // number interpolators - n, // q.length - o; - - // Coerce inputs to strings. - a = a + "", b = b + ""; - - // Reset our regular expression! - d3_interpolate_number.lastIndex = 0; - - // Find all numbers in b. - for (i = 0; m = d3_interpolate_number.exec(b); ++i) { - if (m.index) s.push(b.substring(s0, s1 = m.index)); - q.push({i: s.length, x: m[0]}); - s.push(null); - s0 = d3_interpolate_number.lastIndex; - } - if (s0 < b.length) s.push(b.substring(s0)); - - // Find all numbers in a. - for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) { - o = q[i]; - if (o.x == m[0]) { // The numbers match, so coalesce. - if (o.i) { - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i - 1] += o.x; - s.splice(o.i, 1); - for (j = i + 1; j < n; ++j) q[j].i--; - } else { // This match is followed by a string, so coalesce twice. - s[o.i - 1] += o.x + s[o.i + 1]; - s.splice(o.i, 2); - for (j = i + 1; j < n; ++j) q[j].i -= 2; - } - } else { - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i] = o.x; - } else { // This match is followed by a string, so coalesce twice. - s[o.i] = o.x + s[o.i + 1]; - s.splice(o.i + 1, 1); - for (j = i + 1; j < n; ++j) q[j].i--; - } - } - q.splice(i, 1); - n--; - i--; - } else { - o.x = d3_interpolateNumber(parseFloat(m[0]), parseFloat(o.x)); - } - } - - // Remove any numbers in b not found in a. - while (i < n) { - o = q.pop(); - if (s[o.i + 1] == null) { // This match is followed by another number. - s[o.i] = o.x; - } else { // This match is followed by a string, so coalesce twice. - s[o.i] = o.x + s[o.i + 1]; - s.splice(o.i + 1, 1); - } - n--; - } - - // Special optimization for only a single match. - if (s.length === 1) { - return s[0] == null - ? (o = q[0].x, function(t) { return o(t) + ""; }) - : function() { return b; }; - } - - // Otherwise, interpolate each of the numbers and rejoin the string. - return function(t) { - for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t); - return s.join(""); - }; -} - -var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g; - -d3.interpolate = d3_interpolate; - -function d3_interpolate(a, b) { - var i = d3.interpolators.length, f; - while (--i >= 0 && !(f = d3.interpolators[i](a, b))); - return f; -} - -d3.interpolators = [ - function(a, b) { - var t = typeof b; - return (t === "string" ? (d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString) - : b instanceof d3_Color ? d3_interpolateRgb - : t === "object" ? (Array.isArray(b) ? d3_interpolateArray : d3_interpolateObject) - : d3_interpolateNumber)(a, b); - } -]; - -d3.transform = function(string) { - var g = d3_document.createElementNS(d3.ns.prefix.svg, "g"); - return (d3.transform = function(string) { - if (string != null) { - g.setAttribute("transform", string); - var t = g.transform.baseVal.consolidate(); - } - return new d3_transform(t ? t.matrix : d3_transformIdentity); - })(string); -}; - -// Compute x-scale and normalize the first row. -// Compute shear and make second row orthogonal to first. -// Compute y-scale and normalize the second row. -// Finally, compute the rotation. -function d3_transform(m) { - var r0 = [m.a, m.b], - r1 = [m.c, m.d], - kx = d3_transformNormalize(r0), - kz = d3_transformDot(r0, r1), - ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0; - if (r0[0] * r1[1] < r1[0] * r0[1]) { - r0[0] *= -1; - r0[1] *= -1; - kx *= -1; - kz *= -1; - } - this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees; - this.translate = [m.e, m.f]; - this.scale = [kx, ky]; - this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0; -}; - -d3_transform.prototype.toString = function() { - return "translate(" + this.translate - + ")rotate(" + this.rotate - + ")skewX(" + this.skew - + ")scale(" + this.scale - + ")"; -}; - -function d3_transformDot(a, b) { - return a[0] * b[0] + a[1] * b[1]; -} - -function d3_transformNormalize(a) { - var k = Math.sqrt(d3_transformDot(a, a)); - if (k) { - a[0] /= k; - a[1] /= k; - } - return k; -} - -function d3_transformCombine(a, b, k) { - a[0] += k * b[0]; - a[1] += k * b[1]; - return a; -} - -var d3_transformIdentity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0}; - -d3.interpolateTransform = d3_interpolateTransform; - -function d3_interpolateTransform(a, b) { - var s = [], // string constants and placeholders - q = [], // number interpolators - n, - A = d3.transform(a), - B = d3.transform(b), - ta = A.translate, - tb = B.translate, - ra = A.rotate, - rb = B.rotate, - wa = A.skew, - wb = B.skew, - ka = A.scale, - kb = B.scale; - - if (ta[0] != tb[0] || ta[1] != tb[1]) { - s.push("translate(", null, ",", null, ")"); - q.push({i: 1, x: d3_interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3_interpolateNumber(ta[1], tb[1])}); - } else if (tb[0] || tb[1]) { - s.push("translate(" + tb + ")"); - } else { - s.push(""); - } - - if (ra != rb) { - if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360; // shortest path - q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3_interpolateNumber(ra, rb)}); - } else if (rb) { - s.push(s.pop() + "rotate(" + rb + ")"); - } - - if (wa != wb) { - q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3_interpolateNumber(wa, wb)}); - } else if (wb) { - s.push(s.pop() + "skewX(" + wb + ")"); - } - - if (ka[0] != kb[0] || ka[1] != kb[1]) { - n = s.push(s.pop() + "scale(", null, ",", null, ")"); - q.push({i: n - 4, x: d3_interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3_interpolateNumber(ka[1], kb[1])}); - } else if (kb[0] != 1 || kb[1] != 1) { - s.push(s.pop() + "scale(" + kb + ")"); - } - - n = q.length; - return function(t) { - var i = -1, o; - while (++i < n) s[(o = q[i]).i] = o.x(t); - return s.join(""); - }; -} - -d3_transitionPrototype.tween = function(name, tween) { - var id = this.id; - if (arguments.length < 2) return this.node().__transition__[id].tween.get(name); - return d3_selection_each(this, tween == null - ? function(node) { node.__transition__[id].tween.remove(name); } - : function(node) { node.__transition__[id].tween.set(name, tween); }); -}; - -function d3_transition_tween(groups, name, value, tween) { - var id = groups.id; - return d3_selection_each(groups, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].tween.set(name, tween(value.call(node, node.__data__, i, j))); } - : (value = tween(value), function(node) { node.__transition__[id].tween.set(name, value); })); -} - -d3_transitionPrototype.attr = function(nameNS, value) { - if (arguments.length < 2) { - - // For attr(object), the object specifies the names and values of the - // attributes to transition. The values may be functions that are - // evaluated for each element. - for (value in nameNS) this.attr(value, nameNS[value]); - return this; - } - - var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, - name = d3.ns.qualify(nameNS); - - // For attr(string, null), remove the attribute with the specified name. - function attrNull() { - this.removeAttribute(name); - } - function attrNullNS() { - this.removeAttributeNS(name.space, name.local); - } - - // For attr(string, string), set the attribute with the specified name. - function attrTween(b) { - return b == null ? attrNull : (b += "", function() { - var a = this.getAttribute(name), i; - return a !== b && (i = interpolate(a, b), function(t) { this.setAttribute(name, i(t)); }); - }); - } - function attrTweenNS(b) { - return b == null ? attrNullNS : (b += "", function() { - var a = this.getAttributeNS(name.space, name.local), i; - return a !== b && (i = interpolate(a, b), function(t) { this.setAttributeNS(name.space, name.local, i(t)); }); - }); - } - - return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween); -}; - -d3_transitionPrototype.attrTween = function(nameNS, tween) { - var name = d3.ns.qualify(nameNS); - - function attrTween(d, i) { - var f = tween.call(this, d, i, this.getAttribute(name)); - return f && function(t) { this.setAttribute(name, f(t)); }; - } - function attrTweenNS(d, i) { - var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local)); - return f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); }; - } - - return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween); -}; - -d3_transitionPrototype.style = function(name, value, priority) { - var n = arguments.length; - if (n < 3) { - - // For style(object) or style(object, string), the object specifies the - // names and values of the attributes to set or remove. The values may be - // functions that are evaluated for each element. The optional string - // specifies the priority. - if (typeof name !== "string") { - if (n < 2) value = ""; - for (priority in name) this.style(priority, name[priority], value); - return this; - } - - // For style(string, string) or style(string, function), use the default - // priority. The priority is ignored for style(string, null). - priority = ""; - } - - // For style(name, null) or style(name, null, priority), remove the style - // property with the specified name. The priority is ignored. - function styleNull() { - this.style.removeProperty(name); - } - - // For style(name, string) or style(name, string, priority), set the style - // property with the specified name, using the specified priority. - // Otherwise, a name, value and priority are specified, and handled as below. - function styleString(b) { - return b == null ? styleNull : (b += "", function() { - var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i; - return a !== b && (i = d3_interpolate(a, b), function(t) { this.style.setProperty(name, i(t), priority); }); - }); - } - - return d3_transition_tween(this, "style." + name, value, styleString); -}; - -d3_transitionPrototype.styleTween = function(name, tween, priority) { - if (arguments.length < 3) priority = ""; - - function styleTween(d, i) { - var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name)); - return f && function(t) { this.style.setProperty(name, f(t), priority); }; - } - - return this.tween("style." + name, styleTween); -}; - -d3_transitionPrototype.text = function(value) { - return d3_transition_tween(this, "text", value, d3_transition_text); -}; - -function d3_transition_text(b) { - if (b == null) b = ""; - return function() { this.textContent = b; }; -} - -d3_transitionPrototype.remove = function() { - return this.each("end.transition", function() { - var p; - if (this.__transition__.count < 2 && (p = this.parentNode)) p.removeChild(this); - }); -}; - -d3_transitionPrototype.ease = function(value) { - var id = this.id; - if (arguments.length < 1) return this.node().__transition__[id].ease; - if (typeof value !== "function") value = d3.ease.apply(d3, arguments); - return d3_selection_each(this, function(node) { node.__transition__[id].ease = value; }); -}; - -d3_transitionPrototype.delay = function(value) { - var id = this.id; - return d3_selection_each(this, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].delay = +value.call(node, node.__data__, i, j); } - : (value = +value, function(node) { node.__transition__[id].delay = value; })); -}; - -d3_transitionPrototype.duration = function(value) { - var id = this.id; - return d3_selection_each(this, typeof value === "function" - ? function(node, i, j) { node.__transition__[id].duration = Math.max(1, value.call(node, node.__data__, i, j)); } - : (value = Math.max(1, value), function(node) { node.__transition__[id].duration = value; })); -}; - -d3_transitionPrototype.each = function(type, listener) { - var id = this.id; - if (arguments.length < 2) { - var inherit = d3_transitionInherit, - inheritId = d3_transitionInheritId; - d3_transitionInheritId = id; - d3_selection_each(this, function(node, i, j) { - d3_transitionInherit = node.__transition__[id]; - type.call(node, node.__data__, i, j); - }); - d3_transitionInherit = inherit; - d3_transitionInheritId = inheritId; - } else { - d3_selection_each(this, function(node) { - var transition = node.__transition__[id]; - (transition.event || (transition.event = d3.dispatch("start", "end"))).on(type, listener); - }); - } - return this; -}; - -d3_transitionPrototype.transition = function() { - var id0 = this.id, - id1 = ++d3_transitionId, - subgroups = [], - subgroup, - group, - node, - transition; - - for (var j = 0, m = this.length; j < m; j++) { - subgroups.push(subgroup = []); - for (var group = this[j], i = 0, n = group.length; i < n; i++) { - if (node = group[i]) { - transition = Object.create(node.__transition__[id0]); - transition.delay += transition.duration; - d3_transitionNode(node, i, id1, transition); - } - subgroup.push(node); - } - } - - return d3_transition(subgroups, id1); -}; - -function d3_transitionNode(node, i, id, inherit) { - var lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0}), - transition = lock[id]; - - if (!transition) { - var time = inherit.time; - - transition = lock[id] = { - tween: new d3_Map, - time: time, - ease: inherit.ease, - delay: inherit.delay, - duration: inherit.duration - }; - - ++lock.count; - - d3.timer(function(elapsed) { - var d = node.__data__, - ease = transition.ease, - delay = transition.delay, - duration = transition.duration, - timer = d3_timer_active, - tweened = []; - - timer.t = delay + time; - if (delay <= elapsed) return start(elapsed - delay); - timer.c = start; - - function start(elapsed) { - if (lock.active > id) return stop(); - lock.active = id; - transition.event && transition.event.start.call(node, d, i); - - transition.tween.forEach(function(key, value) { - if (value = value.call(node, d, i)) { - tweened.push(value); - } - }); - - d3.timer(function() { // defer to end of current frame - timer.c = tick(elapsed || 1) ? d3_true : tick; - return 1; - }, 0, time); - } - - function tick(elapsed) { - if (lock.active !== id) return stop(); - - var t = elapsed / duration, - e = ease(t), - n = tweened.length; - - while (n > 0) { - tweened[--n].call(node, e); - } - - if (t >= 1) { - transition.event && transition.event.end.call(node, d, i); - return stop(); - } - } - - function stop() { - if (--lock.count) delete lock[id]; - else delete node.__transition__; - return 1; - } - }, 0, time); - } -} - -d3.xhr = d3_xhrType(d3_identity); - -function d3_xhrType(response) { - return function(url, mimeType, callback) { - if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, mimeType = null; - return d3_xhr(url, mimeType, response, callback); - }; -} - -function d3_xhr(url, mimeType, response, callback) { - var xhr = {}, - dispatch = d3.dispatch("beforesend", "progress", "load", "error"), - headers = {}, - request = new XMLHttpRequest, - responseType = null; - - // If IE does not support CORS, use XDomainRequest. - if (d3_window.XDomainRequest - && !("withCredentials" in request) - && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest; - - "onload" in request - ? request.onload = request.onerror = respond - : request.onreadystatechange = function() { request.readyState > 3 && respond(); }; - - function respond() { - var status = request.status, result; - if (!status && request.responseText || status >= 200 && status < 300 || status === 304) { - try { - result = response.call(xhr, request); - } catch (e) { - dispatch.error.call(xhr, e); - return; - } - dispatch.load.call(xhr, result); - } else { - dispatch.error.call(xhr, request); - } - } - - request.onprogress = function(event) { - var o = d3.event; - d3.event = event; - try { dispatch.progress.call(xhr, request); } - finally { d3.event = o; } - }; - - xhr.header = function(name, value) { - name = (name + "").toLowerCase(); - if (arguments.length < 2) return headers[name]; - if (value == null) delete headers[name]; - else headers[name] = value + ""; - return xhr; - }; - - // If mimeType is non-null and no Accept header is set, a default is used. - xhr.mimeType = function(value) { - if (!arguments.length) return mimeType; - mimeType = value == null ? null : value + ""; - return xhr; - }; - - // Specifies what type the response value should take; - // for instance, arraybuffer, blob, document, or text. - xhr.responseType = function(value) { - if (!arguments.length) return responseType; - responseType = value; - return xhr; - }; - - // Specify how to convert the response content to a specific type; - // changes the callback value on "load" events. - xhr.response = function(value) { - response = value; - return xhr; - }; - - // Convenience methods. - ["get", "post"].forEach(function(method) { - xhr[method] = function() { - return xhr.send.apply(xhr, [method].concat(d3_array(arguments))); - }; - }); - - // If callback is non-null, it will be used for error and load events. - xhr.send = function(method, data, callback) { - if (arguments.length === 2 && typeof data === "function") callback = data, data = null; - request.open(method, url, true); - if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*"; - if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]); - if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType); - if (responseType != null) request.responseType = responseType; - if (callback != null) xhr.on("error", callback).on("load", function(request) { callback(null, request); }); - dispatch.beforesend.call(xhr, request); - request.send(data == null ? null : data); - return xhr; - }; - - xhr.abort = function() { - request.abort(); - return xhr; - }; - - d3.rebind(xhr, dispatch, "on"); - - return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback)); -}; - -function d3_xhr_fixCallback(callback) { - return callback.length === 1 - ? function(error, request) { callback(error == null ? request : null); } - : callback; -} - -d3.text = d3_xhrType(function(request) { - return request.responseText; -}); - -d3.json = function(url, callback) { - return d3_xhr(url, "application/json", d3_json, callback); -}; - -function d3_json(request) { - return JSON.parse(request.responseText); -} - -d3.html = function(url, callback) { - return d3_xhr(url, "text/html", d3_html, callback); -}; - -function d3_html(request) { - var range = d3_document.createRange(); - range.selectNode(d3_document.body); - return range.createContextualFragment(request.responseText); -} - -d3.xml = d3_xhrType(function(request) { - return request.responseXML; -}); - return d3; -})(); -d3.combobox = function() { - var event = d3.dispatch('accept'), - data = [], - suggestions = []; - - var fetcher = function(val, cb) { - cb(data.filter(function(d) { - return d.value - .toString() - .toLowerCase() - .indexOf(val.toLowerCase()) !== -1; - })); - }; - - var combobox = function(input) { - var idx = -1, - container = d3.select(document.body) - .selectAll('div.combobox') - .filter(function(d) { return d === input.node(); }), - shown = !container.empty(); - - input - .classed('combobox-input', true) - .on('focus.typeahead', focus) - .on('blur.typeahead', blur) - .on('keydown.typeahead', keydown) - .on('keyup.typeahead', keyup) - .on('input.typeahead', change) - .each(function() { - var parent = this.parentNode, - sibling = this.nextSibling; - - var caret = d3.select(parent).selectAll('.combobox-caret') - .filter(function(d) { return d === input.node(); }) - .data([input.node()]); - - caret.enter().insert('div', function() { return sibling; }) - .attr('class', 'combobox-caret'); - - caret - .on('mousedown', function () { - // prevent the form element from blurring. it blurs - // on mousedown - d3.event.stopPropagation(); - d3.event.preventDefault(); - input.node().focus(); - fetch('', render); - }); - }); - - function focus() { - fetch(value(), render); - } - - function blur() { - window.setTimeout(hide, 150); - } - - function show() { - if (!shown) { - container = d3.select(document.body) - .insert('div', ':first-child') - .datum(input.node()) - .attr('class', 'combobox') - .style({ - position: 'absolute', - display: 'block', - left: '0px' - }) - .on('mousedown', function () { - // prevent moving focus out of the text field - d3.event.preventDefault(); - }); - - d3.select(document.body) - .on('scroll.combobox', render, true); - - shown = true; - } - } - - function hide() { - if (shown) { - idx = -1; - container.remove(); - - d3.select(document.body) - .on('scroll.combobox', null); - - shown = false; - } - } - - function keydown() { - switch (d3.event.keyCode) { - // backspace, delete - case 8: - case 46: - input.on('input.typeahead', function() { - idx = -1; - render(); - input.on('input.typeahead', change); - }); - break; - // tab - case 9: - container.selectAll('a.selected').each(event.accept); - break; - // return - case 13: - d3.event.preventDefault(); - break; - // up arrow - case 38: - nav(-1); - d3.event.preventDefault(); - break; - // down arrow - case 40: - nav(+1); - d3.event.preventDefault(); - break; - } - d3.event.stopPropagation(); - } - - function keyup() { - switch (d3.event.keyCode) { - // escape - case 27: - hide(); - break; - // return - case 13: - container.selectAll('a.selected').each(event.accept); - hide(); - break; - } - } - - function change() { - fetch(value(), function() { - autocomplete(); - render(); - }); - } - - function nav(dir) { - idx = Math.max(Math.min(idx + dir, suggestions.length - 1), 0); - input.property('value', suggestions[idx].value); - render(); - ensureVisible(); - } - - function value() { - var value = input.property('value'), - start = input.property('selectionStart'), - end = input.property('selectionEnd'); - - if (start && end) { - value = value.substring(0, start); - } - - return value; - } - - function fetch(v, cb) { - fetcher.call(input, v, function(_) { - suggestions = _; - cb(); - }); - } - - function autocomplete() { - var v = value(); - - idx = -1; - - if (!v) return; - - for (var i = 0; i < suggestions.length; i++) { - if (suggestions[i].value.toLowerCase().indexOf(v.toLowerCase()) === 0) { - var completion = v + suggestions[i].value.substr(v.length); - idx = i; - input.property('value', completion); - input.node().setSelectionRange(v.length, completion.length); - return; - } - } - } - - function render() { - if (suggestions.length > 1 && document.activeElement === input.node()) { - show(); - } else { - hide(); - return; - } - - var options = container - .selectAll('a.combobox-option') - .data(suggestions, function(d) { return d.value; }); - - options.enter().append('a') - .attr('class', 'combobox-option') - .text(function(d) { return d.value; }); - - options - .attr('title', function(d) { return d.title; }) - .classed('selected', function(d, i) { return i == idx; }) - .on('mouseover', select) - .on('click', accept) - .order(); - - options.exit() - .remove(); - - var rect = input.node().getBoundingClientRect(); - - container.style({ - 'left': rect.left + 'px', - 'width': rect.width + 'px', - 'top': rect.height + rect.top + 'px' - }); - } - - function select(d, i) { - idx = i; - render(); - } - - function ensureVisible() { - var node = container.selectAll('a.selected').node(); - if (node) node.scrollIntoView(); - } - - function accept(d) { - if (!shown) return; - input - .property('value', d.value) - .trigger('change'); - event.accept(d); - hide(); - } - }; - - combobox.fetcher = function(_) { - if (!arguments.length) return fetcher; - fetcher = _; - return combobox; - }; - - combobox.data = function(_) { - if (!arguments.length) return data; - data = _; - return combobox; - }; - - return d3.rebind(combobox, event, 'on'); -}; -d3.geo.tile = function() { - var size = [960, 500], - scale = 256, - scaleExtent = [0, 20], - translate = [size[0] / 2, size[1] / 2], - zoomDelta = 0; - - function bound(_) { - return Math.min(scaleExtent[1], Math.max(scaleExtent[0], _)); - } - - function tile() { - var z = Math.max(Math.log(scale) / Math.LN2 - 8, 0), - z0 = bound(Math.round(z + zoomDelta)), - k = Math.pow(2, z - z0 + 8), - origin = [(translate[0] - scale / 2) / k, (translate[1] - scale / 2) / k], - tiles = [], - cols = d3.range(Math.max(0, Math.floor(-origin[0])), Math.max(0, Math.ceil(size[0] / k - origin[0]))), - rows = d3.range(Math.max(0, Math.floor(-origin[1])), Math.max(0, Math.ceil(size[1] / k - origin[1]))); - - rows.forEach(function(y) { - cols.forEach(function(x) { - tiles.push([x, y, z0]); - }); - }); - - tiles.translate = origin; - tiles.scale = k; - - return tiles; - } - - tile.scaleExtent = function(_) { - if (!arguments.length) return scaleExtent; - scaleExtent = _; - return tile; - }; - - tile.size = function(_) { - if (!arguments.length) return size; - size = _; - return tile; - }; - - tile.scale = function(_) { - if (!arguments.length) return scale; - scale = _; - return tile; - }; - - tile.translate = function(_) { - if (!arguments.length) return translate; - translate = _; - return tile; - }; - - tile.zoomDelta = function(_) { - if (!arguments.length) return zoomDelta; - zoomDelta = +_; - return tile; - }; - - return tile; -}; -d3.jsonp = function (url, callback) { - function rand() { - var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', - c = '', i = -1; - while (++i < 15) c += chars.charAt(Math.floor(Math.random() * 52)); - return c; - } - - function create(url) { - var e = url.match(/callback=d3.jsonp.(\w+)/), - c = e ? e[1] : rand(); - d3.jsonp[c] = function(data) { - callback(data); - delete d3.jsonp[c]; - script.remove(); - }; - return 'd3.jsonp.' + c; - } - - var cb = create(url), - script = d3.select('head') - .append('script') - .attr('type', 'text/javascript') - .attr('src', url.replace(/(\{|%7B)callback(\}|%7D)/, cb)); -}; -/* - * This code is licensed under the MIT license. - * - * Copyright © 2013, iD authors. - * - * Portions copyright © 2011, Keith Cirkel - * See https://github.com/keithamus/jwerty - * - */ -d3.keybinding = function(namespace) { - var bindings = []; - - function matches(binding, event) { - for (var p in binding.event) { - if (event[p] != binding.event[p]) - return false; - } - - return (!binding.capture) === (event.eventPhase !== Event.CAPTURING_PHASE); - } - - function capture() { - for (var i = 0; i < bindings.length; i++) { - var binding = bindings[i]; - if (matches(binding, d3.event)) { - binding.callback(); - } - } - } - - function bubble() { - var tagName = d3.select(d3.event.target).node().tagName; - if (tagName == 'INPUT' || tagName == 'SELECT' || tagName == 'TEXTAREA') { - return; - } - capture(); - } - - function keybinding(selection) { - selection = selection || d3.select(document); - selection.on('keydown.capture' + namespace, capture, true); - selection.on('keydown.bubble' + namespace, bubble, false); - return keybinding; - } - - keybinding.off = function(selection) { - selection = selection || d3.select(document); - selection.on('keydown.capture' + namespace, null); - selection.on('keydown.bubble' + namespace, null); - return keybinding; - }; - - keybinding.on = function(code, callback, capture) { - var binding = { - event: { - keyCode: 0, - shiftKey: false, - ctrlKey: false, - altKey: false, - metaKey: false - }, - capture: capture, - callback: callback - }; - - code = code.toLowerCase().match(/(?:(?:[^+⇧⌃⌥⌘])+|[⇧⌃⌥⌘]|\+\+|^\+$)/g); - - for (var i = 0; i < code.length; i++) { - // Normalise matching errors - if (code[i] === '++') code[i] = '+'; - - if (code[i] in d3.keybinding.modifierCodes) { - binding.event[d3.keybinding.modifierProperties[d3.keybinding.modifierCodes[code[i]]]] = true; - } else if (code[i] in d3.keybinding.keyCodes) { - binding.event.keyCode = d3.keybinding.keyCodes[code[i]]; - } - } - - bindings.push(binding); - - return keybinding; - }; - - return keybinding; -}; - -(function () { - d3.keybinding.modifierCodes = { - // Shift key, ⇧ - '⇧': 16, shift: 16, - // CTRL key, on Mac: ⌃ - '⌃': 17, ctrl: 17, - // ALT key, on Mac: ⌥ (Alt) - '⌥': 18, alt: 18, option: 18, - // META, on Mac: ⌘ (CMD), on Windows (Win), on Linux (Super) - '⌘': 91, meta: 91, cmd: 91, 'super': 91, win: 91 - }; - - d3.keybinding.modifierProperties = { - 16: 'shiftKey', - 17: 'ctrlKey', - 18: 'altKey', - 91: 'metaKey' - }; - - d3.keybinding.keyCodes = { - // Backspace key, on Mac: ⌫ (Backspace) - '⌫': 8, backspace: 8, - // Tab Key, on Mac: ⇥ (Tab), on Windows ⇥⇥ - '⇥': 9, '⇆': 9, tab: 9, - // Return key, ↩ - '↩': 13, 'return': 13, enter: 13, '⌅': 13, - // Pause/Break key - 'pause': 19, 'pause-break': 19, - // Caps Lock key, ⇪ - '⇪': 20, caps: 20, 'caps-lock': 20, - // Escape key, on Mac: ⎋, on Windows: Esc - '⎋': 27, escape: 27, esc: 27, - // Space key - space: 32, - // Page-Up key, or pgup, on Mac: ↖ - '↖': 33, pgup: 33, 'page-up': 33, - // Page-Down key, or pgdown, on Mac: ↘ - '↘': 34, pgdown: 34, 'page-down': 34, - // END key, on Mac: ⇟ - '⇟': 35, end: 35, - // HOME key, on Mac: ⇞ - '⇞': 36, home: 36, - // Insert key, or ins - ins: 45, insert: 45, - // Delete key, on Mac: ⌦ (Delete) - '⌦': 46, del: 46, 'delete': 46, - // Left Arrow Key, or ← - '←': 37, left: 37, 'arrow-left': 37, - // Up Arrow Key, or ↑ - '↑': 38, up: 38, 'arrow-up': 38, - // Right Arrow Key, or → - '→': 39, right: 39, 'arrow-right': 39, - // Up Arrow Key, or ↓ - '↓': 40, down: 40, 'arrow-down': 40, - // odities, printing characters that come out wrong: - // Num-Multiply, or * - '*': 106, star: 106, asterisk: 106, multiply: 106, - // Num-Plus or + - '+': 107, 'plus': 107, - // Num-Subtract, or - - '-': 109, subtract: 109, - // Semicolon - ';': 186, semicolon:186, - // = or equals - '=': 187, 'equals': 187, - // Comma, or , - ',': 188, comma: 188, - 'dash': 189, //??? - // Period, or ., or full-stop - '.': 190, period: 190, 'full-stop': 190, - // Slash, or /, or forward-slash - '/': 191, slash: 191, 'forward-slash': 191, - // Tick, or `, or back-quote - '`': 192, tick: 192, 'back-quote': 192, - // Open bracket, or [ - '[': 219, 'open-bracket': 219, - // Back slash, or \ - '\\': 220, 'back-slash': 220, - // Close backet, or ] - ']': 221, 'close-bracket': 221, - // Apostrophe, or Quote, or ' - '\'': 222, quote: 222, apostrophe: 222 - }; - - // NUMPAD 0-9 - var i = 95, n = 0; - while (++i < 106) { - d3.keybinding.keyCodes['num-' + n] = i; - ++n; - } - - // 0-9 - i = 47; n = 0; - while (++i < 58) { - d3.keybinding.keyCodes[n] = i; - ++n; - } - - // F1-F25 - i = 111; n = 1; - while (++i < 136) { - d3.keybinding.keyCodes['f' + n] = i; - ++n; - } - - // a-z - i = 64; - while (++i < 91) { - d3.keybinding.keyCodes[String.fromCharCode(i).toLowerCase()] = i; - } -})(); -d3.selection.prototype.one = function (type, listener, capture) { - var target = this, typeOnce = type + ".once"; - function one() { - target.on(typeOnce, null); - listener.apply(this, arguments); - } - target.on(typeOnce, one, capture); - return this; -}; -d3.selection.prototype.dimensions = function (dimensions) { - if (!arguments.length) { - var node = this.node(); - return [node.offsetWidth, - node.offsetHeight]; - } - return this.attr({width: dimensions[0], height: dimensions[1]}); -}; -d3.selection.prototype.trigger = function (type) { - this.each(function() { - var evt = document.createEvent('HTMLEvents'); - evt.initEvent(type, true, true); - this.dispatchEvent(evt); - }); -}; -d3.typeahead = function() { - var event = d3.dispatch('accept'), - autohighlight = false, - data; - - var typeahead = function(selection) { - var container, - hidden, - idx = autohighlight ? 0 : -1; - - function setup() { - var rect = selection.node().getBoundingClientRect(); - container = d3.select(document.body) - .append('div').attr('class', 'typeahead') - .style({ - position: 'absolute', - left: rect.left + 'px', - top: rect.bottom + 'px' - }); - selection - .on('keyup.typeahead', key); - hidden = false; - } - - function hide() { - container.remove(); - idx = autohighlight ? 0 : -1; - hidden = true; - } - - function slowHide() { - if (autohighlight) { - if (container.select('a.selected').node()) { - select(container.select('a.selected').datum()); - event.accept(); - } - } - window.setTimeout(hide, 150); - } - - selection - .on('focus.typeahead', setup) - .on('blur.typeahead', slowHide); - - function key() { - var len = container.selectAll('a').data().length; - if (d3.event.keyCode === 40) { - idx = Math.min(idx + 1, len - 1); - return highlight(); - } else if (d3.event.keyCode === 38) { - idx = Math.max(idx - 1, 0); - return highlight(); - } else if (d3.event.keyCode === 13) { - if (container.select('a.selected').node()) { - select(container.select('a.selected').datum()); - } - event.accept(); - hide(); - } else { - update(); - } - } - - function highlight() { - container - .selectAll('a') - .classed('selected', function(d, i) { return i == idx; }); - } - - function update() { - if (hidden) setup(); - - data(selection, function(data) { - container.style('display', function() { - return data.length ? 'block' : 'none'; - }); - - var options = container - .selectAll('a') - .data(data, function(d) { return d.value; }); - - options.enter() - .append('a') - .text(function(d) { return d.value; }) - .attr('title', function(d) { return d.title; }) - .on('click', select); - - options.exit().remove(); - - options - .classed('selected', function(d, i) { return i == idx; }); - }); - } - - function select(d) { - selection - .property('value', d.value) - .trigger('change'); - } - - }; - - typeahead.data = function(_) { - if (!arguments.length) return data; - data = _; - return typeahead; - }; - - typeahead.autohighlight = function(_) { - if (!arguments.length) return autohighlight; - autohighlight = _; - return typeahead; - }; - - return d3.rebind(typeahead, event, 'on'); -}; -// Tooltips and svg mask used to highlight certain features -d3.curtain = function() { - - var event = d3.dispatch(), - surface, - tooltip, - darkness; - - function curtain(selection) { - - surface = selection.append('svg') - .attr('id', 'curtain') - .style({ - 'z-index': 1000, - 'pointer-events': 'none', - 'position': 'absolute', - 'top': 0, - 'left': 0 - }); - - darkness = surface.append('path') - .attr({ - x: 0, - y: 0, - 'class': 'curtain-darkness' - }); - - d3.select(window).on('resize.curtain', resize); - - tooltip = selection.append('div') - .attr('class', 'tooltip') - .style('z-index', 1002); - - tooltip.append('div').attr('class', 'tooltip-arrow'); - tooltip.append('div').attr('class', 'tooltip-inner'); - - resize(); - - function resize() { - surface.attr({ - width: window.innerWidth, - height: window.innerHeight - }); - curtain.cut(darkness.datum()); - } - } - - curtain.reveal = function(box, text, tooltipclass, duration) { - if (typeof box === 'string') box = d3.select(box).node(); - if (box.getBoundingClientRect) box = box.getBoundingClientRect(); - - curtain.cut(box, duration); - - if (text) { - // pseudo markdown bold text hack - var parts = text.split('**'); - var html = parts[0] ? '' + parts[0] + '' : ''; - if (parts[1]) html += '' + parts[1] + ''; - - var dimensions = tooltip.classed('in', true) - .select('.tooltip-inner') - .html(html) - .dimensions(); - - var pos; - - var w = window.innerWidth, - h = window.innerHeight; - - if (box.top + box.height < Math.min(100, box.width + box.left)) { - side = 'bottom'; - pos = [box.left + box.width / 2 - dimensions[0]/ 2, box.top + box.height]; - - } else if (box.left + box.width + 300 < window.innerWidth) { - side = 'right'; - pos = [box.left + box.width, box.top + box.height / 2 - dimensions[1] / 2]; - - } else if (box.left > 300) { - side = 'left'; - pos = [box.left - 200, box.top + box.height / 2 - dimensions[1] / 2]; - } else { - side = 'bottom'; - pos = [box.left, box.top + box.height]; - } - - pos = [ - Math.min(Math.max(10, pos[0]), w - dimensions[0] - 10), - Math.min(Math.max(10, pos[1]), h - dimensions[1] - 10) - ]; - - - if (duration !== 0 || !tooltip.classed(side)) tooltip.call(iD.ui.Toggle(true)); - - tooltip - .style('top', pos[1] + 'px') - .style('left', pos[0] + 'px') - .attr('class', 'curtain-tooltip tooltip in ' + side + ' ' + tooltipclass) - .select('.tooltip-inner') - .html(html); - - } else { - tooltip.call(iD.ui.Toggle(false)); - } - }; - - curtain.cut = function(datum, duration) { - darkness.datum(datum); - - (duration === 0 ? darkness : darkness.transition().duration(duration || 600)) - .attr('d', function(d) { - var string = "M 0,0 L 0," + window.innerHeight + " L " + - window.innerWidth + "," + window.innerHeight + "L" + - window.innerWidth + ",0 Z"; - - if (!d) return string; - return string + 'M' + - d.left + ',' + d.top + 'L' + - d.left + ',' + (d.top + d.height) + 'L' + - (d.left + d.width) + ',' + (d.top + d.height) + 'L' + - (d.left + d.width) + ',' + (d.top) + 'Z'; - - }); - }; - - curtain.remove = function() { - surface.remove(); - tooltip.remove(); - }; - - return d3.rebind(curtain, event, 'on'); -}; -// Like selection.property('value', ...), but avoids no-op value sets, -// which can result in layout/repaint thrashing in some situations. -d3.selection.prototype.value = function(value) { - function d3_selection_value(value) { - function valueNull() { - delete this.value; - } - - function valueConstant() { - if (this.value !== value) this.value = value; - } - - function valueFunction() { - var x = value.apply(this, arguments); - if (x == null) delete this.value; - else if (this.value !== x) this.value = x; - } - - return value == null - ? valueNull : (typeof value === "function" - ? valueFunction : valueConstant); - } - - if (!arguments.length) return this.property('value'); - return this.each(d3_selection_value(value)); -}; -var JXON = new (function () { - var - sValueProp = "keyValue", sAttributesProp = "keyAttributes", sAttrPref = "@", /* you can customize these values */ - aCache = [], rIsNull = /^\s*$/, rIsBool = /^(?:true|false)$/i; - - function parseText (sValue) { - if (rIsNull.test(sValue)) { return null; } - if (rIsBool.test(sValue)) { return sValue.toLowerCase() === "true"; } - if (isFinite(sValue)) { return parseFloat(sValue); } - if (isFinite(Date.parse(sValue))) { return new Date(sValue); } - return sValue; - } - - function EmptyTree () { } - EmptyTree.prototype.toString = function () { return "null"; }; - EmptyTree.prototype.valueOf = function () { return null; }; - - function objectify (vValue) { - return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue); - } - - function createObjTree (oParentNode, nVerb, bFreeze, bNesteAttr) { - var - nLevelStart = aCache.length, bChildren = oParentNode.hasChildNodes(), - bAttributes = oParentNode.hasAttributes(), bHighVerb = Boolean(nVerb & 2); - - var - sProp, vContent, nLength = 0, sCollectedTxt = "", - vResult = bHighVerb ? {} : /* put here the default value for empty nodes: */ true; - - if (bChildren) { - for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) { - oNode = oParentNode.childNodes.item(nItem); - if (oNode.nodeType === 4) { sCollectedTxt += oNode.nodeValue; } /* nodeType is "CDATASection" (4) */ - else if (oNode.nodeType === 3) { sCollectedTxt += oNode.nodeValue.trim(); } /* nodeType is "Text" (3) */ - else if (oNode.nodeType === 1 && !oNode.prefix) { aCache.push(oNode); } /* nodeType is "Element" (1) */ - } - } - - var nLevelEnd = aCache.length, vBuiltVal = parseText(sCollectedTxt); - - if (!bHighVerb && (bChildren || bAttributes)) { vResult = nVerb === 0 ? objectify(vBuiltVal) : {}; } - - for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) { - sProp = aCache[nElId].nodeName.toLowerCase(); - vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr); - if (vResult.hasOwnProperty(sProp)) { - if (vResult[sProp].constructor !== Array) { vResult[sProp] = [vResult[sProp]]; } - vResult[sProp].push(vContent); - } else { - vResult[sProp] = vContent; - nLength++; - } - } - - if (bAttributes) { - var - nAttrLen = oParentNode.attributes.length, - sAPrefix = bNesteAttr ? "" : sAttrPref, oAttrParent = bNesteAttr ? {} : vResult; - - for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) { - oAttrib = oParentNode.attributes.item(nAttrib); - oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim()); - } - - if (bNesteAttr) { - if (bFreeze) { Object.freeze(oAttrParent); } - vResult[sAttributesProp] = oAttrParent; - nLength -= nAttrLen - 1; - } - } - - if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) { - vResult[sValueProp] = vBuiltVal; - } else if (!bHighVerb && nLength === 0 && sCollectedTxt) { - vResult = vBuiltVal; - } - - if (bFreeze && (bHighVerb || nLength > 0)) { Object.freeze(vResult); } - - aCache.length = nLevelStart; - - return vResult; - } - - function loadObjTree (oXMLDoc, oParentEl, oParentObj) { - var vValue, oChild; - - if (oParentObj instanceof String || oParentObj instanceof Number || oParentObj instanceof Boolean) { - oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toString())); /* verbosity level is 0 */ - } else if (oParentObj.constructor === Date) { - oParentEl.appendChild(oXMLDoc.createTextNode(oParentObj.toGMTString())); - } - - for (var sName in oParentObj) { - vValue = oParentObj[sName]; - if (isFinite(sName) || vValue instanceof Function) { continue; } /* verbosity level is 0 */ - if (sName === sValueProp) { - if (vValue !== null && vValue !== true) { oParentEl.appendChild(oXMLDoc.createTextNode(vValue.constructor === Date ? vValue.toGMTString() : String(vValue))); } - } else if (sName === sAttributesProp) { /* verbosity level is 3 */ - for (var sAttrib in vValue) { oParentEl.setAttribute(sAttrib, vValue[sAttrib]); } - } else if (sName.charAt(0) === sAttrPref) { - oParentEl.setAttribute(sName.slice(1), vValue); - } else if (vValue.constructor === Array) { - for (var nItem = 0; nItem < vValue.length; nItem++) { - oChild = oXMLDoc.createElement(sName); - loadObjTree(oXMLDoc, oChild, vValue[nItem]); - oParentEl.appendChild(oChild); - } - } else { - oChild = oXMLDoc.createElement(sName); - if (vValue instanceof Object) { - loadObjTree(oXMLDoc, oChild, vValue); - } else if (vValue !== null && vValue !== true) { - oChild.appendChild(oXMLDoc.createTextNode(vValue.toString())); - } - oParentEl.appendChild(oChild); - } - } - } - - this.build = function (oXMLParent, nVerbosity /* optional */, bFreeze /* optional */, bNesteAttributes /* optional */) { - var _nVerb = arguments.length > 1 && typeof nVerbosity === "number" ? nVerbosity & 3 : /* put here the default verbosity level: */ 1; - return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3); - }; - - this.unbuild = function (oObjTree) { - var oNewDoc = document.implementation.createDocument("", "", null); - loadObjTree(oNewDoc, oNewDoc, oObjTree); - return oNewDoc; - }; - - this.stringify = function (oObjTree) { - return (new XMLSerializer()).serializeToString(JXON.unbuild(oObjTree)); - }; -})(); -// var myObject = JXON.build(doc); -// we got our javascript object! try: alert(JSON.stringify(myObject)); - -// var newDoc = JXON.unbuild(myObject); -// we got our Document instance! try: alert((new XMLSerializer()).serializeToString(newDoc)); -/*! - * Lo-Dash 1.0.0-rc.3 - * (c) 2012 John-David Dalton - * Based on Underscore.js 1.4.3 - * (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc. - * Available under MIT license - */ -;(function(window, undefined) { - - /** Detect free variable `exports` */ - var freeExports = typeof exports == 'object' && exports; - - /** Detect free variable `global` and use it as `window` */ - var freeGlobal = typeof global == 'object' && global; - if (freeGlobal.global === freeGlobal) { - window = freeGlobal; - } - - /** Used for array and object method references */ - var arrayRef = [], - // avoid a Closure Compiler bug by creatively creating an object - objectRef = new function(){}; - - /** Used to generate unique IDs */ - var idCounter = 0; - - /** Used internally to indicate various things */ - var indicatorObject = objectRef; - - /** Used by `cachedContains` as the default size when optimizations are enabled for large arrays */ - var largeArraySize = 30; - - /** Used to restore the original `_` reference in `noConflict` */ - var oldDash = window._; - - /** Used to detect template delimiter values that require a with-statement */ - var reComplexDelimiter = /[-?+=!~*%&^<>|{(\/]|\[\D|\b(?:delete|in|instanceof|new|typeof|void)\b/; - - /** Used to match HTML entities */ - var reEscapedHtml = /&(?:amp|lt|gt|quot|#x27);/g; - - /** Used to match empty string literals in compiled template source */ - var reEmptyStringLeading = /\b__p \+= '';/g, - reEmptyStringMiddle = /\b(__p \+=) '' \+/g, - reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; - - /** Used to match regexp flags from their coerced string values */ - var reFlags = /\w*$/; - - /** Used to insert the data object variable into compiled template source */ - var reInsertVariable = /(?:__e|__t = )\(\s*(?![\d\s"']|this\.)/g; - - /** Used to detect if a method is native */ - var reNative = RegExp('^' + - (objectRef.valueOf + '') - .replace(/[.*+?^=!:${}()|[\]\/\\]/g, '\\$&') - .replace(/valueOf|for [^\]]+/g, '.+?') + '$' - ); - - /** - * Used to match ES6 template delimiters - * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6 - */ - var reEsTemplate = /\$\{((?:(?=\\?)\\?[\s\S])*?)}/g; - - /** Used to match "interpolate" template delimiters */ - var reInterpolate = /<%=([\s\S]+?)%>/g; - - /** Used to ensure capturing order of template delimiters */ - var reNoMatch = /($^)/; - - /** Used to match HTML characters */ - var reUnescapedHtml = /[&<>"']/g; - - /** Used to match unescaped characters in compiled string literals */ - var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g; - - /** Used to fix the JScript [[DontEnum]] bug */ - var shadowed = [ - 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', - 'toLocaleString', 'toString', 'valueOf' - ]; - - /** Used to make template sourceURLs easier to identify */ - var templateCounter = 0; - - /** Native method shortcuts */ - var ceil = Math.ceil, - concat = arrayRef.concat, - floor = Math.floor, - getPrototypeOf = reNative.test(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf, - hasOwnProperty = objectRef.hasOwnProperty, - push = arrayRef.push, - propertyIsEnumerable = objectRef.propertyIsEnumerable, - toString = objectRef.toString; - - /* Native method shortcuts for methods with the same name as other `lodash` methods */ - var nativeBind = reNative.test(nativeBind = slice.bind) && nativeBind, - nativeIsArray = reNative.test(nativeIsArray = Array.isArray) && nativeIsArray, - nativeIsFinite = window.isFinite, - nativeIsNaN = window.isNaN, - nativeKeys = reNative.test(nativeKeys = Object.keys) && nativeKeys, - nativeMax = Math.max, - nativeMin = Math.min, - nativeRandom = Math.random; - - /** `Object#toString` result shortcuts */ - var argsClass = '[object Arguments]', - arrayClass = '[object Array]', - boolClass = '[object Boolean]', - dateClass = '[object Date]', - funcClass = '[object Function]', - numberClass = '[object Number]', - objectClass = '[object Object]', - regexpClass = '[object RegExp]', - stringClass = '[object String]'; - - /** Detect various environments */ - var isIeOpera = !!window.attachEvent, - isV8 = nativeBind && !/\n|true/.test(nativeBind + isIeOpera); - - /* Detect if `Function#bind` exists and is inferred to be fast (all but V8) */ - var isBindFast = nativeBind && !isV8; - - /* Detect if `Object.keys` exists and is inferred to be fast (IE, Opera, V8) */ - var isKeysFast = nativeKeys && (isIeOpera || isV8); - - /** - * Detect the JScript [[DontEnum]] bug: - * - * In IE < 9 an objects own properties, shadowing non-enumerable ones, are - * made non-enumerable as well. - */ - var hasDontEnumBug; - - /** Detect if own properties are iterated after inherited properties (IE < 9) */ - var iteratesOwnLast; - - /** - * Detect if `Array#shift` and `Array#splice` augment array-like objects - * incorrectly: - * - * Firefox < 10, IE compatibility mode, and IE < 9 have buggy Array `shift()` - * and `splice()` functions that fail to remove the last element, `value[0]`, - * of array-like objects even though the `length` property is set to `0`. - * The `shift()` method is buggy in IE 8 compatibility mode, while `splice()` - * is buggy regardless of mode in IE < 9 and buggy in compatibility mode in IE 9. - */ - var hasObjectSpliceBug = (hasObjectSpliceBug = { '0': 1, 'length': 1 }, - arrayRef.splice.call(hasObjectSpliceBug, 0, 1), hasObjectSpliceBug[0]); - - /** Detect if an `arguments` object's indexes are non-enumerable (IE < 9) */ - var nonEnumArgs = true; - - (function() { - var props = []; - function ctor() { this.x = 1; } - ctor.prototype = { 'valueOf': 1, 'y': 1 }; - for (var prop in new ctor) { props.push(prop); } - for (prop in arguments) { nonEnumArgs = !prop; } - - hasDontEnumBug = !/valueOf/.test(props); - iteratesOwnLast = props[0] != 'x'; - }(1)); - - /** Detect if `arguments` objects are `Object` objects (all but Opera < 10.5) */ - var argsAreObjects = arguments.constructor == Object; - - /** Detect if `arguments` objects [[Class]] is unresolvable (Firefox < 4, IE < 9) */ - var noArgsClass = !isArguments(arguments); - - /** - * Detect lack of support for accessing string characters by index: - * - * IE < 8 can't access characters by index and IE 8 can only access - * characters by index on string literals. - */ - var noCharByIndex = ('x'[0] + Object('x')[0]) != 'xx'; - - /** - * Detect if a node's [[Class]] is unresolvable (IE < 9) - * and that the JS engine won't error when attempting to coerce an object to - * a string without a `toString` property value of `typeof` "function". - */ - try { - var noNodeClass = ({ 'toString': 0 } + '', toString.call(document) == objectClass); - } catch(e) { } - - /** - * Detect if sourceURL syntax is usable without erroring: - * - * The JS engine embedded in Adobe products will throw a syntax error when - * it encounters a single line comment beginning with the `@` symbol. - * - * The JS engine in Narwhal will generate the function `function anonymous(){//}` - * and throw a syntax error. - * - * Avoid comments beginning `@` symbols in IE because they are part of its - * non-standard conditional compilation support. - * http://msdn.microsoft.com/en-us/library/121hztk3(v=vs.94).aspx - */ - try { - var useSourceURL = (Function('//@')(), !isIeOpera); - } catch(e) { } - - /** Used to identify object classifications that `_.clone` supports */ - var cloneableClasses = {}; - cloneableClasses[funcClass] = false; - cloneableClasses[argsClass] = cloneableClasses[arrayClass] = - cloneableClasses[boolClass] = cloneableClasses[dateClass] = - cloneableClasses[numberClass] = cloneableClasses[objectClass] = - cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true; - - /** Used to lookup a built-in constructor by [[Class]] */ - var ctorByClass = {}; - ctorByClass[arrayClass] = Array; - ctorByClass[boolClass] = Boolean; - ctorByClass[dateClass] = Date; - ctorByClass[objectClass] = Object; - ctorByClass[numberClass] = Number; - ctorByClass[regexpClass] = RegExp; - ctorByClass[stringClass] = String; - - /** Used to determine if values are of the language type Object */ - var objectTypes = { - 'boolean': false, - 'function': true, - 'object': true, - 'number': false, - 'string': false, - 'undefined': false - }; - - /** Used to escape characters for inclusion in compiled string literals */ - var stringEscapes = { - '\\': '\\', - "'": "'", - '\n': 'n', - '\r': 'r', - '\t': 't', - '\u2028': 'u2028', - '\u2029': 'u2029' - }; - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a `lodash` object, that wraps the given `value`, to enable - * method chaining. - * - * The chainable wrapper functions are: - * `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`, `compose`, - * `concat`, `countBy`, `debounce`, `defaults`, `defer`, `delay`, `difference`, - * `filter`, `flatten`, `forEach`, `forIn`, `forOwn`, `functions`, `groupBy`, - * `initial`, `intersection`, `invert`, `invoke`, `keys`, `map`, `max`, `memoize`, - * `merge`, `min`, `object`, `omit`, `once`, `pairs`, `partial`, `pick`, `pluck`, - * `push`, `range`, `reject`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, - * `sortBy`, `splice`, `tap`, `throttle`, `times`, `toArray`, `union`, `uniq`, - * `unshift`, `values`, `where`, `without`, `wrap`, and `zip` - * - * The non-chainable wrapper functions are: - * `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `has`, `identity`, - * `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`, `isEmpty`, - * `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`, `isObject`, - * `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`, `lastIndexOf`, - * `mixin`, `noConflict`, `pop`, `random`, `reduce`, `reduceRight`, `result`, - * `shift`, `size`, `some`, `sortedIndex`, `template`, `unescape`, and `uniqueId` - * - * The wrapper functions `first` and `last` return wrapped values when `n` is - * passed, otherwise they return unwrapped values. - * - * @name _ - * @constructor - * @category Chaining - * @param {Mixed} value The value to wrap in a `lodash` instance. - * @returns {Object} Returns a `lodash` instance. - */ - function lodash(value) { - // exit early if already wrapped, even if wrapped by a different `lodash` constructor - if (value && typeof value == 'object' && value.__wrapped__) { - return value; - } - // allow invoking `lodash` without the `new` operator - if (!(this instanceof lodash)) { - return new lodash(value); - } - this.__wrapped__ = value; - } - - /** - * By default, the template delimiters used by Lo-Dash are similar to those in - * embedded Ruby (ERB). Change the following template settings to use alternative - * delimiters. - * - * @static - * @memberOf _ - * @type Object - */ - lodash.templateSettings = { - - /** - * Used to detect `data` property values to be HTML-escaped. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'escape': /<%-([\s\S]+?)%>/g, - - /** - * Used to detect code to be evaluated. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'evaluate': /<%([\s\S]+?)%>/g, - - /** - * Used to detect `data` property values to inject. - * - * @static - * @memberOf _.templateSettings - * @type RegExp - */ - 'interpolate': reInterpolate, - - /** - * Used to reference the data object in the template text. - * - * @static - * @memberOf _.templateSettings - * @type String - */ - 'variable': '' - }; - - /*--------------------------------------------------------------------------*/ - - /** - * The template used to create iterator functions. - * - * @private - * @param {Obect} data The data object used to populate the text. - * @returns {String} Returns the interpolated text. - */ - var iteratorTemplate = template( - // conditional strict mode - "<% if (obj.useStrict) { %>'use strict';\n<% } %>" + - - // the `iteratee` may be reassigned by the `top` snippet - 'var index, iteratee = <%= firstArg %>, ' + - // assign the `result` variable an initial value - 'result = <%= firstArg %>;\n' + - // exit early if the first argument is falsey - 'if (!<%= firstArg %>) return result;\n' + - // add code before the iteration branches - '<%= top %>;\n' + - - // array-like iteration: - '<% if (arrayLoop) { %>' + - 'var length = iteratee.length; index = -1;\n' + - "if (typeof length == 'number') {" + - - // add support for accessing string characters by index if needed - ' <% if (noCharByIndex) { %>\n' + - ' if (isString(iteratee)) {\n' + - " iteratee = iteratee.split('')\n" + - ' }' + - ' <% } %>\n' + - - // iterate over the array-like value - ' while (++index < length) {\n' + - ' <%= arrayLoop %>\n' + - ' }\n' + - '}\n' + - 'else {' + - - // object iteration: - // add support for iterating over `arguments` objects if needed - ' <% } else if (nonEnumArgs) { %>\n' + - ' var length = iteratee.length; index = -1;\n' + - ' if (length && isArguments(iteratee)) {\n' + - ' while (++index < length) {\n' + - " index += '';\n" + - ' <%= objectLoop %>\n' + - ' }\n' + - ' } else {' + - ' <% } %>' + - - // Firefox < 3.6, Opera > 9.50 - Opera < 11.60, and Safari < 5.1 - // (if the prototype or a property on the prototype has been set) - // incorrectly sets a function's `prototype` property [[Enumerable]] - // value to `true`. Because of this Lo-Dash standardizes on skipping - // the the `prototype` property of functions regardless of its - // [[Enumerable]] value. - ' <% if (!hasDontEnumBug) { %>\n' + - " var skipProto = typeof iteratee == 'function' && \n" + - " propertyIsEnumerable.call(iteratee, 'prototype');\n" + - ' <% } %>' + - - // iterate own properties using `Object.keys` if it's fast - ' <% if (isKeysFast && useHas) { %>\n' + - ' var ownIndex = -1,\n' + - ' ownProps = objectTypes[typeof iteratee] ? nativeKeys(iteratee) : [],\n' + - ' length = ownProps.length;\n\n' + - ' while (++ownIndex < length) {\n' + - ' index = ownProps[ownIndex];\n' + - " <% if (!hasDontEnumBug) { %>if (!(skipProto && index == 'prototype')) {\n <% } %>" + - ' <%= objectLoop %>\n' + - ' <% if (!hasDontEnumBug) { %>}\n<% } %>' + - ' }' + - - // else using a for-in loop - ' <% } else { %>\n' + - ' for (index in iteratee) {<%' + - ' if (!hasDontEnumBug || useHas) { %>\n if (<%' + - " if (!hasDontEnumBug) { %>!(skipProto && index == 'prototype')<% }" + - ' if (!hasDontEnumBug && useHas) { %> && <% }' + - ' if (useHas) { %>hasOwnProperty.call(iteratee, index)<% }' + - ' %>) {' + - ' <% } %>\n' + - ' <%= objectLoop %>;' + - ' <% if (!hasDontEnumBug || useHas) { %>\n }<% } %>\n' + - ' }' + - ' <% } %>' + - - // Because IE < 9 can't set the `[[Enumerable]]` attribute of an - // existing property and the `constructor` property of a prototype - // defaults to non-enumerable, Lo-Dash skips the `constructor` - // property when it infers it's iterating over a `prototype` object. - ' <% if (hasDontEnumBug) { %>\n\n' + - ' var ctor = iteratee.constructor;\n' + - ' <% for (var k = 0; k < 7; k++) { %>\n' + - " index = '<%= shadowed[k] %>';\n" + - ' if (<%' + - " if (shadowed[k] == 'constructor') {" + - ' %>!(ctor && ctor.prototype === iteratee) && <%' + - ' } %>hasOwnProperty.call(iteratee, index)) {\n' + - ' <%= objectLoop %>\n' + - ' }' + - ' <% } %>' + - ' <% } %>' + - ' <% if (arrayLoop || nonEnumArgs) { %>\n}<% } %>\n' + - - // add code to the bottom of the iteration function - '<%= bottom %>;\n' + - // finally, return the `result` - 'return result' - ); - - /** Reusable iterator options for `assign` and `defaults` */ - var assignIteratorOptions = { - 'args': 'object, source, guard', - 'top': - "for (var argsIndex = 1, argsLength = typeof guard == 'number' ? 2 : arguments.length; argsIndex < argsLength; argsIndex++) {\n" + - ' if ((iteratee = arguments[argsIndex])) {', - 'objectLoop': 'result[index] = iteratee[index]', - 'bottom': ' }\n}' - }; - - /** - * Reusable iterator options shared by `each`, `forIn`, and `forOwn`. - */ - var eachIteratorOptions = { - 'args': 'collection, callback, thisArg', - 'top': "callback = callback && typeof thisArg == 'undefined' ? callback : createCallback(callback, thisArg)", - 'arrayLoop': 'if (callback(iteratee[index], index, collection) === false) return result', - 'objectLoop': 'if (callback(iteratee[index], index, collection) === false) return result' - }; - - /** Reusable iterator options for `forIn` and `forOwn` */ - var forOwnIteratorOptions = { - 'arrayLoop': null - }; - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a function optimized to search large arrays for a given `value`, - * starting at `fromIndex`, using strict equality for comparisons, i.e. `===`. - * - * @private - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Number} [fromIndex=0] The index to search from. - * @param {Number} [largeSize=30] The length at which an array is considered large. - * @returns {Boolean} Returns `true` if `value` is found, else `false`. - */ - function cachedContains(array, fromIndex, largeSize) { - fromIndex || (fromIndex = 0); - - var length = array.length, - isLarge = (length - fromIndex) >= (largeSize || largeArraySize); - - if (isLarge) { - var cache = {}, - index = fromIndex - 1; - - while (++index < length) { - // manually coerce `value` to a string because `hasOwnProperty`, in some - // older versions of Firefox, coerces objects incorrectly - var key = array[index] + ''; - (hasOwnProperty.call(cache, key) ? cache[key] : (cache[key] = [])).push(array[index]); - } - } - return function(value) { - if (isLarge) { - var key = value + ''; - return hasOwnProperty.call(cache, key) && indexOf(cache[key], value) > -1; - } - return indexOf(array, value, fromIndex) > -1; - } - } - - /** - * Used by `_.max` and `_.min` as the default `callback` when a given - * `collection` is a string value. - * - * @private - * @param {String} value The character to inspect. - * @returns {Number} Returns the code unit of given character. - */ - function charAtCallback(value) { - return value.charCodeAt(0); - } - - /** - * Used by `sortBy` to compare transformed `collection` values, stable sorting - * them in ascending order. - * - * @private - * @param {Object} a The object to compare to `b`. - * @param {Object} b The object to compare to `a`. - * @returns {Number} Returns the sort order indicator of `1` or `-1`. - */ - function compareAscending(a, b) { - var ai = a.index, - bi = b.index; - - a = a.criteria; - b = b.criteria; - - // ensure a stable sort in V8 and other engines - // http://code.google.com/p/v8/issues/detail?id=90 - if (a !== b) { - if (a > b || typeof a == 'undefined') { - return 1; - } - if (a < b || typeof b == 'undefined') { - return -1; - } - } - return ai < bi ? -1 : 1; - } - - /** - * Creates a function that, when called, invokes `func` with the `this` - * binding of `thisArg` and prepends any `partailArgs` to the arguments passed - * to the bound function. - * - * @private - * @param {Function|String} func The function to bind or the method name. - * @param {Mixed} [thisArg] The `this` binding of `func`. - * @param {Array} partialArgs An array of arguments to be partially applied. - * @returns {Function} Returns the new bound function. - */ - function createBound(func, thisArg, partialArgs) { - var isFunc = isFunction(func), - isPartial = !partialArgs, - key = thisArg; - - // juggle arguments - if (isPartial) { - partialArgs = thisArg; - } - if (!isFunc) { - thisArg = func; - } - - function bound() { - // `Function#bind` spec - // http://es5.github.com/#x15.3.4.5 - var args = arguments, - thisBinding = isPartial ? this : thisArg; - - if (!isFunc) { - func = thisArg[key]; - } - if (partialArgs.length) { - args = args.length - ? partialArgs.concat(slice(args)) - : partialArgs; - } - if (this instanceof bound) { - // ensure `new bound` is an instance of `bound` and `func` - noop.prototype = func.prototype; - thisBinding = new noop; - noop.prototype = null; - - // mimic the constructor's `return` behavior - // http://es5.github.com/#x13.2.2 - var result = func.apply(thisBinding, args); - return isObject(result) ? result : thisBinding; - } - return func.apply(thisBinding, args); - } - return bound; - } - - /** - * Produces an iteration callback bound to an optional `thisArg`. If `func` is - * a property name, the callback will return the property value for a given element. - * - * @private - * @param {Function|String} [func=identity|property] The function called per - * iteration or property name to query. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @param {Object} [accumulating] Used to indicate that the callback should - * accept an `accumulator` argument. - * @returns {Function} Returns a callback function. - */ - function createCallback(func, thisArg, accumulating) { - if (!func) { - return identity; - } - if (typeof func != 'function') { - return function(object) { - return object[func]; - }; - } - if (typeof thisArg != 'undefined') { - if (accumulating) { - return function(accumulator, value, index, object) { - return func.call(thisArg, accumulator, value, index, object); - }; - } - return function(value, index, object) { - return func.call(thisArg, value, index, object); - }; - } - return func; - } - - /** - * Creates compiled iteration functions. - * - * @private - * @param {Object} [options1, options2, ...] The compile options object(s). - * useHas - A boolean to specify using `hasOwnProperty` checks in the object loop. - * args - A string of comma separated arguments the iteration function will accept. - * top - A string of code to execute before the iteration branches. - * arrayLoop - A string of code to execute in the array loop. - * objectLoop - A string of code to execute in the object loop. - * bottom - A string of code to execute after the iteration branches. - * - * @returns {Function} Returns the compiled function. - */ - function createIterator() { - var data = { - 'arrayLoop': '', - 'bottom': '', - 'hasDontEnumBug': hasDontEnumBug, - 'isKeysFast': isKeysFast, - 'objectLoop': '', - 'nonEnumArgs': nonEnumArgs, - 'noCharByIndex': noCharByIndex, - 'shadowed': shadowed, - 'top': '', - 'useHas': true - }; - - // merge options into a template data object - for (var object, index = 0; object = arguments[index]; index++) { - for (var key in object) { - data[key] = object[key]; - } - } - var args = data.args; - data.firstArg = /^[^,]+/.exec(args)[0]; - - // create the function factory - var factory = Function( - 'createCallback, hasOwnProperty, isArguments, isString, objectTypes, ' + - 'nativeKeys, propertyIsEnumerable', - 'return function(' + args + ') {\n' + iteratorTemplate(data) + '\n}' - ); - // return the compiled function - return factory( - createCallback, hasOwnProperty, isArguments, isString, objectTypes, - nativeKeys, propertyIsEnumerable - ); - } - - /** - * A function compiled to iterate `arguments` objects, arrays, objects, and - * strings consistenly across environments, executing the `callback` for each - * element in the `collection`. The `callback` is bound to `thisArg` and invoked - * with three arguments; (value, index|key, collection). Callbacks may exit - * iteration early by explicitly returning `false`. - * - * @private - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array|Object|String} Returns `collection`. - */ - var each = createIterator(eachIteratorOptions); - - /** - * Used by `template` to escape characters for inclusion in compiled - * string literals. - * - * @private - * @param {String} match The matched character to escape. - * @returns {String} Returns the escaped character. - */ - function escapeStringChar(match) { - return '\\' + stringEscapes[match]; - } - - /** - * Used by `escape` to convert characters to HTML entities. - * - * @private - * @param {String} match The matched character to escape. - * @returns {String} Returns the escaped character. - */ - function escapeHtmlChar(match) { - return htmlEscapes[match]; - } - - /** - * Checks if `value` is a DOM node in IE < 9. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a DOM node, else `false`. - */ - function isNode(value) { - // IE < 9 presents DOM nodes as `Object` objects except they have `toString` - // methods that are `typeof` "string" and still can coerce nodes to strings - return typeof value.toString != 'function' && typeof (value + '') == 'string'; - } - - /** - * A no-operation function. - * - * @private - */ - function noop() { - // no operation performed - } - - /** - * Slices the `collection` from the `start` index up to, but not including, - * the `end` index. - * - * Note: This function is used, instead of `Array#slice`, to support node lists - * in IE < 9 and to ensure dense arrays are returned. - * - * @private - * @param {Array|Object|String} collection The collection to slice. - * @param {Number} start The start index. - * @param {Number} end The end index. - * @returns {Array} Returns the new array. - */ - function slice(array, start, end) { - start || (start = 0); - if (typeof end == 'undefined') { - end = array ? array.length : 0; - } - var index = -1, - length = end - start || 0, - result = Array(length < 0 ? 0 : length); - - while (++index < length) { - result[index] = array[start + index]; - } - return result; - } - - /** - * Used by `unescape` to convert HTML entities to characters. - * - * @private - * @param {String} match The matched character to unescape. - * @returns {String} Returns the unescaped character. - */ - function unescapeHtmlChar(match) { - return htmlUnescapes[match]; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Assigns own enumerable properties of source object(s) to the `destination` - * object. Subsequent sources will overwrite propery assignments of previous - * sources. - * - * @static - * @memberOf _ - * @alias extend - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [source1, source2, ...] The source objects. - * @returns {Object} Returns the destination object. - * @example - * - * _.assign({ 'name': 'moe' }, { 'age': 40 }); - * // => { 'name': 'moe', 'age': 40 } - */ - var assign = createIterator(assignIteratorOptions); - - /** - * Checks if `value` is an `arguments` object. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an `arguments` object, else `false`. - * @example - * - * (function() { return _.isArguments(arguments); })(1, 2, 3); - * // => true - * - * _.isArguments([1, 2, 3]); - * // => false - */ - function isArguments(value) { - return toString.call(value) == argsClass; - } - // fallback for browsers that can't detect `arguments` objects by [[Class]] - if (noArgsClass) { - isArguments = function(value) { - return value ? hasOwnProperty.call(value, 'callee') : false; - }; - } - - /** - * Iterates over `object`'s own and inherited enumerable properties, executing - * the `callback` for each property. The `callback` is bound to `thisArg` and - * invoked with three arguments; (value, key, object). Callbacks may exit iteration - * early by explicitly returning `false`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns `object`. - * @example - * - * function Dog(name) { - * this.name = name; - * } - * - * Dog.prototype.bark = function() { - * alert('Woof, woof!'); - * }; - * - * _.forIn(new Dog('Dagny'), function(value, key) { - * alert(key); - * }); - * // => alerts 'name' and 'bark' (order is not guaranteed) - */ - var forIn = createIterator(eachIteratorOptions, forOwnIteratorOptions, { - 'useHas': false - }); - - /** - * Iterates over an object's own enumerable properties, executing the `callback` - * for each property. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, key, object). Callbacks may exit iteration early by explicitly - * returning `false`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns `object`. - * @example - * - * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) { - * alert(key); - * }); - * // => alerts '0', '1', and 'length' (order is not guaranteed) - */ - var forOwn = createIterator(eachIteratorOptions, forOwnIteratorOptions); - - /** - * A fallback implementation of `isPlainObject` that checks if a given `value` - * is an object created by the `Object` constructor, assuming objects created - * by the `Object` constructor have no inherited enumerable properties and that - * there are no `Object.prototype` extensions. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if `value` is a plain object, else `false`. - */ - function shimIsPlainObject(value) { - // avoid non-objects and false positives for `arguments` objects - var result = false; - if (!(value && typeof value == 'object') || isArguments(value)) { - return result; - } - // check that the constructor is `Object` (i.e. `Object instanceof Object`) - var ctor = value.constructor; - if ((!isFunction(ctor) && (!noNodeClass || !isNode(value))) || ctor instanceof ctor) { - // IE < 9 iterates inherited properties before own properties. If the first - // iterated property is an object's own property then there are no inherited - // enumerable properties. - if (iteratesOwnLast) { - forIn(value, function(value, key, object) { - result = !hasOwnProperty.call(object, key); - return false; - }); - return result === false; - } - // In most environments an object's own properties are iterated before - // its inherited properties. If the last iterated property is an object's - // own property then there are no inherited enumerable properties. - forIn(value, function(value, key) { - result = key; - }); - return result === false || hasOwnProperty.call(value, result); - } - return result; - } - - /** - * A fallback implementation of `Object.keys` that produces an array of the - * given object's own enumerable property names. - * - * @private - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names. - */ - function shimKeys(object) { - var result = []; - forOwn(object, function(value, key) { - result.push(key); - }); - return result; - } - - /** - * Used to convert characters to HTML entities: - * - * Though the `>` character is escaped for symmetry, characters like `>` and `/` - * don't require escaping in HTML and have no special meaning unless they're part - * of a tag or an unquoted attribute value. - * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact") - */ - var htmlEscapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - "'": ''' - }; - - /** Used to convert HTML entities to characters */ - var htmlUnescapes = invert(htmlEscapes); - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a clone of `value`. If `deep` is `true`, nested objects will also - * be cloned, otherwise they will be assigned by reference. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to clone. - * @param {Boolean} deep A flag to indicate a deep clone. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `deep`. - * @param- {Array} [stackA=[]] Internally used to track traversed source objects. - * @param- {Array} [stackB=[]] Internally used to associate clones with their - * source counterparts. - * @returns {Mixed} Returns the cloned `value`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * var shallow = _.clone(stooges); - * shallow[0] === stooges[0]; - * // => true - * - * var deep = _.clone(stooges, true); - * deep[0] === stooges[0]; - * // => false - */ - function clone(value, deep, guard, stackA, stackB) { - if (value == null) { - return value; - } - if (guard) { - deep = false; - } - // inspect [[Class]] - var isObj = isObject(value); - if (isObj) { - var className = toString.call(value); - if (!cloneableClasses[className] || (noNodeClass && isNode(value))) { - return value; - } - var isArr = isArray(value); - } - // shallow clone - if (!isObj || !deep) { - return isObj - ? (isArr ? slice(value) : assign({}, value)) - : value; - } - var ctor = ctorByClass[className]; - switch (className) { - case boolClass: - case dateClass: - return new ctor(+value); - - case numberClass: - case stringClass: - return new ctor(value); - - case regexpClass: - return ctor(value.source, reFlags.exec(value)); - } - // check for circular references and return corresponding clone - stackA || (stackA = []); - stackB || (stackB = []); - - var length = stackA.length; - while (length--) { - if (stackA[length] == value) { - return stackB[length]; - } - } - // init cloned object - var result = isArr ? ctor(value.length) : {}; - - // add the source value to the stack of traversed objects - // and associate it with its clone - stackA.push(value); - stackB.push(result); - - // recursively populate clone (susceptible to call stack limits) - (isArr ? forEach : forOwn)(value, function(objValue, key) { - result[key] = clone(objValue, deep, null, stackA, stackB); - }); - - // add array properties assigned by `RegExp#exec` - if (isArr) { - if (hasOwnProperty.call(value, 'index')) { - result.index = value.index; - } - if (hasOwnProperty.call(value, 'input')) { - result.input = value.input; - } - } - return result; - } - - /** - * Creates a deep clone of `value`. Functions and DOM nodes are **not** cloned. - * The enumerable properties of `arguments` objects and objects created by - * constructors other than `Object` are cloned to plain `Object` objects. - * - * Note: This function is loosely based on the structured clone algorithm. - * See http://www.w3.org/TR/html5/common-dom-interfaces.html#internal-structured-cloning-algorithm. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to deep clone. - * @returns {Mixed} Returns the deep cloned `value`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * var deep = _.cloneDeep(stooges); - * deep[0] === stooges[0]; - * // => false - */ - function cloneDeep(value) { - return clone(value, true); - } - - /** - * Assigns own enumerable properties of source object(s) to the `destination` - * object for all `destination` properties that resolve to `null`/`undefined`. - * Once a property is set, additional defaults of the same property will be - * ignored. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [default1, default2, ...] The default objects. - * @returns {Object} Returns the destination object. - * @example - * - * var iceCream = { 'flavor': 'chocolate' }; - * _.defaults(iceCream, { 'flavor': 'vanilla', 'sprinkles': 'rainbow' }); - * // => { 'flavor': 'chocolate', 'sprinkles': 'rainbow' } - */ - var defaults = createIterator(assignIteratorOptions, { - 'objectLoop': 'if (result[index] == null) ' + assignIteratorOptions.objectLoop - }); - - /** - * Creates a sorted array of all enumerable properties, own and inherited, - * of `object` that have function values. - * - * @static - * @memberOf _ - * @alias methods - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names that have function values. - * @example - * - * _.functions(_); - * // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...] - */ - function functions(object) { - var result = []; - forIn(object, function(value, key) { - if (isFunction(value)) { - result.push(key); - } - }); - return result.sort(); - } - - /** - * Checks if the specified object `property` exists and is a direct property, - * instead of an inherited property. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to check. - * @param {String} property The property to check for. - * @returns {Boolean} Returns `true` if key is a direct property, else `false`. - * @example - * - * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b'); - * // => true - */ - function has(object, property) { - return object ? hasOwnProperty.call(object, property) : false; - } - - /** - * Creates an object composed of the inverted keys and values of the given `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to invert. - * @returns {Object} Returns the created inverted object. - * @example - * - * _.invert({ 'first': 'Moe', 'second': 'Larry', 'third': 'Curly' }); - * // => { 'Moe': 'first', 'Larry': 'second', 'Curly': 'third' } (order is not guaranteed) - */ - function invert(object) { - var result = {}; - forOwn(object, function(value, key) { - result[value] = key; - }); - return result; - } - - /** - * Checks if `value` is an array. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an array, else `false`. - * @example - * - * (function() { return _.isArray(arguments); })(); - * // => false - * - * _.isArray([1, 2, 3]); - * // => true - */ - var isArray = nativeIsArray || function(value) { - // `instanceof` may cause a memory leak in IE 7 if `value` is a host object - // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak - return (argsAreObjects && value instanceof Array) || toString.call(value) == arrayClass; - }; - - /** - * Checks if `value` is a boolean (`true` or `false`) value. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a boolean value, else `false`. - * @example - * - * _.isBoolean(null); - * // => false - */ - function isBoolean(value) { - return value === true || value === false || toString.call(value) == boolClass; - } - - /** - * Checks if `value` is a date. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a date, else `false`. - * @example - * - * _.isDate(new Date); - * // => true - */ - function isDate(value) { - return value instanceof Date || toString.call(value) == dateClass; - } - - /** - * Checks if `value` is a DOM element. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a DOM element, else `false`. - * @example - * - * _.isElement(document.body); - * // => true - */ - function isElement(value) { - return value ? value.nodeType === 1 : false; - } - - /** - * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a - * length of `0` and objects with no own enumerable properties are considered - * "empty". - * - * @static - * @memberOf _ - * @category Objects - * @param {Array|Object|String} value The value to inspect. - * @returns {Boolean} Returns `true` if the `value` is empty, else `false`. - * @example - * - * _.isEmpty([1, 2, 3]); - * // => false - * - * _.isEmpty({}); - * // => true - * - * _.isEmpty(''); - * // => true - */ - function isEmpty(value) { - var result = true; - if (!value) { - return result; - } - var className = toString.call(value), - length = value.length; - - if ((className == arrayClass || className == stringClass || - className == argsClass || (noArgsClass && isArguments(value))) || - (className == objectClass && typeof length == 'number' && isFunction(value.splice))) { - return !length; - } - forOwn(value, function() { - return (result = false); - }); - return result; - } - - /** - * Performs a deep comparison between two values to determine if they are - * equivalent to each other. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} a The value to compare. - * @param {Mixed} b The other value to compare. - * @param- {Object} [stackA=[]] Internally used track traversed `a` objects. - * @param- {Object} [stackB=[]] Internally used track traversed `b` objects. - * @returns {Boolean} Returns `true` if the values are equvalent, else `false`. - * @example - * - * var moe = { 'name': 'moe', 'luckyNumbers': [13, 27, 34] }; - * var clone = { 'name': 'moe', 'luckyNumbers': [13, 27, 34] }; - * - * moe == clone; - * // => false - * - * _.isEqual(moe, clone); - * // => true - */ - function isEqual(a, b, stackA, stackB) { - // exit early for identical values - if (a === b) { - // treat `+0` vs. `-0` as not equal - return a !== 0 || (1 / a == 1 / b); - } - // a strict comparison is necessary because `null == undefined` - if (a == null || b == null) { - return a === b; - } - // compare [[Class]] names - var className = toString.call(a), - otherName = toString.call(b); - - if (className == argsClass) { - className = objectClass; - } - if (otherName == argsClass) { - otherName = objectClass; - } - if (className != otherName) { - return false; - } - switch (className) { - case boolClass: - case dateClass: - // coerce dates and booleans to numbers, dates to milliseconds and booleans - // to `1` or `0`, treating invalid dates coerced to `NaN` as not equal - return +a == +b; - - case numberClass: - // treat `NaN` vs. `NaN` as equal - return a != +a - ? b != +b - // but treat `+0` vs. `-0` as not equal - : (a == 0 ? (1 / a == 1 / b) : a == +b); - - case regexpClass: - case stringClass: - // coerce regexes to strings (http://es5.github.com/#x15.10.6.4) - // treat string primitives and their corresponding object instances as equal - return a == b + ''; - } - var isArr = className == arrayClass; - if (!isArr) { - // unwrap any `lodash` wrapped values - if (a.__wrapped__ || b.__wrapped__) { - return isEqual(a.__wrapped__ || a, b.__wrapped__ || b); - } - // exit for functions and DOM nodes - if (className != objectClass || (noNodeClass && (isNode(a) || isNode(b)))) { - return false; - } - // in older versions of Opera, `arguments` objects have `Array` constructors - var ctorA = !argsAreObjects && isArguments(a) ? Object : a.constructor, - ctorB = !argsAreObjects && isArguments(b) ? Object : b.constructor; - - // non `Object` object instances with different constructors are not equal - if (ctorA != ctorB && !( - isFunction(ctorA) && ctorA instanceof ctorA && - isFunction(ctorB) && ctorB instanceof ctorB - )) { - return false; - } - } - // assume cyclic structures are equal - // the algorithm for detecting cyclic structures is adapted from ES 5.1 - // section 15.12.3, abstract operation `JO` (http://es5.github.com/#x15.12.3) - stackA || (stackA = []); - stackB || (stackB = []); - - var length = stackA.length; - while (length--) { - if (stackA[length] == a) { - return stackB[length] == b; - } - } - var index = -1, - result = true, - size = 0; - - // add `a` and `b` to the stack of traversed objects - stackA.push(a); - stackB.push(b); - - // recursively compare objects and arrays (susceptible to call stack limits) - if (isArr) { - // compare lengths to determine if a deep comparison is necessary - size = a.length; - result = size == b.length; - - if (result) { - // deep compare the contents, ignoring non-numeric properties - while (size--) { - if (!(result = isEqual(a[size], b[size], stackA, stackB))) { - break; - } - } - } - return result; - } - // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys` - // which, in this case, is more costly - forIn(a, function(value, key, a) { - if (hasOwnProperty.call(a, key)) { - // count the number of properties. - size++; - // deep compare each property value. - return (result = hasOwnProperty.call(b, key) && isEqual(value, b[key], stackA, stackB)); - } - }); - - if (result) { - // ensure both objects have the same number of properties - forIn(b, function(value, key, b) { - if (hasOwnProperty.call(b, key)) { - // `size` will be `-1` if `b` has more properties than `a` - return (result = --size > -1); - } - }); - } - return result; - } - - /** - * Checks if `value` is, or can be coerced to, a finite number. - * - * Note: This is not the same as native `isFinite`, which will return true for - * booleans and empty strings. See http://es5.github.com/#x15.1.2.5. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a finite number, else `false`. - * @example - * - * _.isFinite(-101); - * // => true - * - * _.isFinite('10'); - * // => true - * - * _.isFinite(true); - * // => false - * - * _.isFinite(''); - * // => false - * - * _.isFinite(Infinity); - * // => false - */ - function isFinite(value) { - return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value)); - } - - /** - * Checks if `value` is a function. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a function, else `false`. - * @example - * - * _.isFunction(_); - * // => true - */ - function isFunction(value) { - return typeof value == 'function'; - } - // fallback for older versions of Chrome and Safari - if (isFunction(/x/)) { - isFunction = function(value) { - return value instanceof Function || toString.call(value) == funcClass; - }; - } - - /** - * Checks if `value` is the language type of Object. - * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is an object, else `false`. - * @example - * - * _.isObject({}); - * // => true - * - * _.isObject([1, 2, 3]); - * // => true - * - * _.isObject(1); - * // => false - */ - function isObject(value) { - // check if the value is the ECMAScript language type of Object - // http://es5.github.com/#x8 - // and avoid a V8 bug - // http://code.google.com/p/v8/issues/detail?id=2291 - return value ? objectTypes[typeof value] : false; - } - - /** - * Checks if `value` is `NaN`. - * - * Note: This is not the same as native `isNaN`, which will return `true` for - * `undefined` and other values. See http://es5.github.com/#x15.1.2.4. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `NaN`, else `false`. - * @example - * - * _.isNaN(NaN); - * // => true - * - * _.isNaN(new Number(NaN)); - * // => true - * - * isNaN(undefined); - * // => true - * - * _.isNaN(undefined); - * // => false - */ - function isNaN(value) { - // `NaN` as a primitive is the only value that is not equal to itself - // (perform the [[Class]] check first to avoid errors with some host objects in IE) - return isNumber(value) && value != +value - } - - /** - * Checks if `value` is `null`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `null`, else `false`. - * @example - * - * _.isNull(null); - * // => true - * - * _.isNull(undefined); - * // => false - */ - function isNull(value) { - return value === null; - } - - /** - * Checks if `value` is a number. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a number, else `false`. - * @example - * - * _.isNumber(8.4 * 5); - * // => true - */ - function isNumber(value) { - return typeof value == 'number' || toString.call(value) == numberClass; - } - - /** - * Checks if a given `value` is an object created by the `Object` constructor. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if `value` is a plain object, else `false`. - * @example - * - * function Stooge(name, age) { - * this.name = name; - * this.age = age; - * } - * - * _.isPlainObject(new Stooge('moe', 40)); - * // => false - * - * _.isPlainObject([1, 2, 3]); - * // => false - * - * _.isPlainObject({ 'name': 'moe', 'age': 40 }); - * // => true - */ - var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) { - if (!(value && typeof value == 'object')) { - return false; - } - var valueOf = value.valueOf, - objProto = typeof valueOf == 'function' && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto); - - return objProto - ? value == objProto || (getPrototypeOf(value) == objProto && !isArguments(value)) - : shimIsPlainObject(value); - }; - - /** - * Checks if `value` is a regular expression. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a regular expression, else `false`. - * @example - * - * _.isRegExp(/moe/); - * // => true - */ - function isRegExp(value) { - return value instanceof RegExp || toString.call(value) == regexpClass; - } - - /** - * Checks if `value` is a string. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a string, else `false`. - * @example - * - * _.isString('moe'); - * // => true - */ - function isString(value) { - return typeof value == 'string' || toString.call(value) == stringClass; - } - - /** - * Checks if `value` is `undefined`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is `undefined`, else `false`. - * @example - * - * _.isUndefined(void 0); - * // => true - */ - function isUndefined(value) { - return typeof value == 'undefined'; - } - - /** - * Creates an array composed of the own enumerable property names of `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property names. - * @example - * - * _.keys({ 'one': 1, 'two': 2, 'three': 3 }); - * // => ['one', 'two', 'three'] (order is not guaranteed) - */ - var keys = !nativeKeys ? shimKeys : function(object) { - // avoid iterating over the `prototype` property - return typeof object == 'function' && propertyIsEnumerable.call(object, 'prototype') - ? shimKeys(object) - : (isObject(object) ? nativeKeys(object) : []); - }; - - /** - * Merges enumerable properties of the source object(s) into the `destination` - * object. Subsequent sources will overwrite propery assignments of previous - * sources. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The destination object. - * @param {Object} [source1, source2, ...] The source objects. - * @param- {Object} [indicator] Internally used to indicate that the `stack` - * argument is an array of traversed objects instead of another source object. - * @param- {Array} [stackA=[]] Internally used to track traversed source objects. - * @param- {Array} [stackB=[]] Internally used to associate values with their - * source counterparts. - * @returns {Object} Returns the destination object. - * @example - * - * var stooges = [ - * { 'name': 'moe' }, - * { 'name': 'larry' } - * ]; - * - * var ages = [ - * { 'age': 40 }, - * { 'age': 50 } - * ]; - * - * _.merge(stooges, ages); - * // => [{ 'name': 'moe', 'age': 40 }, { 'name': 'larry', 'age': 50 }] - */ - function merge(object, source, indicator) { - var args = arguments, - index = 0, - length = 2, - stackA = args[3], - stackB = args[4]; - - if (indicator !== indicatorObject) { - stackA = []; - stackB = []; - - // work with `_.reduce` by only using its callback `accumulator` and `value` arguments - if (typeof indicator != 'number') { - length = args.length; - } - } - while (++index < length) { - forOwn(args[index], function(source, key) { - var found, isArr, value; - if (source && ((isArr = isArray(source)) || isPlainObject(source))) { - // avoid merging previously merged cyclic sources - var stackLength = stackA.length; - while (stackLength--) { - found = stackA[stackLength] == source; - if (found) { - break; - } - } - if (found) { - object[key] = stackB[stackLength]; - } - else { - // add `source` and associated `value` to the stack of traversed objects - stackA.push(source); - stackB.push(value = (value = object[key], isArr) - ? (isArray(value) ? value : []) - : (isPlainObject(value) ? value : {}) - ); - // recursively merge objects and arrays (susceptible to call stack limits) - object[key] = merge(value, source, indicatorObject, stackA, stackB); - } - } else if (source != null) { - object[key] = source; - } - }); - } - return object; - } - - /** - * Creates a shallow clone of `object` excluding the specified properties. - * Property names may be specified as individual arguments or as arrays of - * property names. If `callback` is passed, it will be executed for each property - * in the `object`, omitting the properties `callback` returns truthy for. The - * `callback` is bound to `thisArg` and invoked with three arguments; (value, key, object). - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The source object. - * @param {Function|String} callback|[prop1, prop2, ...] The properties to omit - * or the function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns an object without the omitted properties. - * @example - * - * _.omit({ 'name': 'moe', 'age': 40, 'userid': 'moe1' }, 'userid'); - * // => { 'name': 'moe', 'age': 40 } - * - * _.omit({ 'name': 'moe', '_hint': 'knucklehead', '_seed': '96c4eb' }, function(value, key) { - * return key.charAt(0) == '_'; - * }); - * // => { 'name': 'moe' } - */ - function omit(object, callback, thisArg) { - var isFunc = typeof callback == 'function', - result = {}; - - if (isFunc) { - callback = createCallback(callback, thisArg); - } else { - var props = concat.apply(arrayRef, arguments); - } - forIn(object, function(value, key, object) { - if (isFunc - ? !callback(value, key, object) - : indexOf(props, key, 1) < 0 - ) { - result[key] = value; - } - }); - return result; - } - - /** - * Creates a two dimensional array of the given object's key-value pairs, - * i.e. `[[key1, value1], [key2, value2]]`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns new array of key-value pairs. - * @example - * - * _.pairs({ 'moe': 30, 'larry': 40, 'curly': 50 }); - * // => [['moe', 30], ['larry', 40], ['curly', 50]] (order is not guaranteed) - */ - function pairs(object) { - var result = []; - forOwn(object, function(value, key) { - result.push([key, value]); - }); - return result; - } - - /** - * Creates a shallow clone of `object` composed of the specified properties. - * Property names may be specified as individual arguments or as arrays of - * property names. If `callback` is passed, it will be executed for each property - * in the `object`, picking the properties `callback` returns truthy for. The - * `callback` is bound to `thisArg` and invoked with three arguments; (value, key, object). - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The source object. - * @param {Function|String} callback|[prop1, prop2, ...] The properties to pick - * or the function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns an object composed of the picked properties. - * @example - * - * _.pick({ 'name': 'moe', 'age': 40, 'userid': 'moe1' }, 'name', 'age'); - * // => { 'name': 'moe', 'age': 40 } - * - * _.pick({ 'name': 'moe', '_hint': 'knucklehead', '_seed': '96c4eb' }, function(value, key) { - * return key.charAt(0) != '_'; - * }); - * // => { 'name': 'moe' } - */ - function pick(object, callback, thisArg) { - var result = {}; - if (typeof callback != 'function') { - var index = 0, - props = concat.apply(arrayRef, arguments), - length = props.length; - - while (++index < length) { - var key = props[index]; - if (key in object) { - result[key] = object[key]; - } - } - } else { - callback = createCallback(callback, thisArg); - forIn(object, function(value, key, object) { - if (callback(value, key, object)) { - result[key] = value; - } - }); - } - return result; - } - - /** - * Creates an array composed of the own enumerable property values of `object`. - * - * @static - * @memberOf _ - * @category Objects - * @param {Object} object The object to inspect. - * @returns {Array} Returns a new array of property values. - * @example - * - * _.values({ 'one': 1, 'two': 2, 'three': 3 }); - * // => [1, 2, 3] - */ - function values(object) { - var result = []; - forOwn(object, function(value) { - result.push(value); - }); - return result; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Checks if a given `target` element is present in a `collection` using strict - * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used - * as the offset from the end of the collection. - * - * @static - * @memberOf _ - * @alias include - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Mixed} target The value to check for. - * @param {Number} [fromIndex=0] The index to search from. - * @returns {Boolean} Returns `true` if the `target` element is found, else `false`. - * @example - * - * _.contains([1, 2, 3], 1); - * // => true - * - * _.contains([1, 2, 3], 1, 2); - * // => false - * - * _.contains({ 'name': 'moe', 'age': 40 }, 'moe'); - * // => true - * - * _.contains('curly', 'ur'); - * // => true - */ - function contains(collection, target, fromIndex) { - var index = -1, - length = collection ? collection.length : 0, - result = false; - - fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0; - if (typeof length == 'number') { - result = (isString(collection) - ? collection.indexOf(target, fromIndex) - : indexOf(collection, target, fromIndex) - ) > -1; - } else { - each(collection, function(value) { - if (++index >= fromIndex) { - return !(result = value === target); - } - }); - } - return result; - } - - /** - * Creates an object composed of keys returned from running each element of - * `collection` through a `callback`. The corresponding value of each key is - * the number of times the key was returned by `callback`. The `callback` is - * bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to count by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to count by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); }); - * // => { '4': 1, '6': 2 } - * - * _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math); - * // => { '4': 1, '6': 2 } - * - * _.countBy(['one', 'two', 'three'], 'length'); - * // => { '3': 2, '5': 1 } - */ - function countBy(collection, callback, thisArg) { - var result = {}; - callback = createCallback(callback, thisArg); - - forEach(collection, function(value, key, collection) { - key = callback(value, key, collection); - (hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1); - }); - return result; - } - - /** - * Checks if the `callback` returns a truthy value for **all** elements of a - * `collection`. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias all - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Boolean} Returns `true` if all elements pass the callback check, - * else `false`. - * @example - * - * _.every([true, 1, null, 'yes'], Boolean); - * // => false - */ - function every(collection, callback, thisArg) { - var result = true; - callback = createCallback(callback, thisArg); - - if (isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - if (!(result = !!callback(collection[index], index, collection))) { - break; - } - } - } else { - each(collection, function(value, index, collection) { - return (result = !!callback(value, index, collection)); - }); - } - return result; - } - - /** - * Examines each element in a `collection`, returning an array of all elements - * the `callback` returns truthy for. The `callback` is bound to `thisArg` and - * invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias select - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of elements that passed the callback check. - * @example - * - * var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => [2, 4, 6] - */ - function filter(collection, callback, thisArg) { - var result = []; - callback = createCallback(callback, thisArg); - - if (isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - var value = collection[index]; - if (callback(value, index, collection)) { - result.push(value); - } - } - } else { - each(collection, function(value, index, collection) { - if (callback(value, index, collection)) { - result.push(value); - } - }); - } - return result; - } - - /** - * Examines each element in a `collection`, returning the first one the `callback` - * returns truthy for. The function returns as soon as it finds an acceptable - * element, and does not iterate over the entire `collection`. The `callback` is - * bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias detect - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the element that passed the callback check, - * else `undefined`. - * @example - * - * var even = _.find([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => 2 - */ - function find(collection, callback, thisArg) { - var result; - callback = createCallback(callback, thisArg); - - forEach(collection, function(value, index, collection) { - if (callback(value, index, collection)) { - result = value; - return false; - } - }); - return result; - } - - /** - * Iterates over a `collection`, executing the `callback` for each element in - * the `collection`. The `callback` is bound to `thisArg` and invoked with three - * arguments; (value, index|key, collection). Callbacks may exit iteration early - * by explicitly returning `false`. - * - * @static - * @memberOf _ - * @alias each - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array|Object|String} Returns `collection`. - * @example - * - * _([1, 2, 3]).forEach(alert).join(','); - * // => alerts each number and returns '1,2,3' - * - * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, alert); - * // => alerts each number value (order is not guaranteed) - */ - function forEach(collection, callback, thisArg) { - if (callback && typeof thisArg == 'undefined' && isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - if (callback(collection[index], index, collection) === false) { - break; - } - } - } else { - each(collection, callback, thisArg); - } - return collection; - } - - /** - * Creates an object composed of keys returned from running each element of - * `collection` through a `callback`. The corresponding value of each key is an - * array of elements passed to `callback` that returned the key. The `callback` - * is bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to group by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to group by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Object} Returns the composed aggregate object. - * @example - * - * _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); }); - * // => { '4': [4.2], '6': [6.1, 6.4] } - * - * _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math); - * // => { '4': [4.2], '6': [6.1, 6.4] } - * - * _.groupBy(['one', 'two', 'three'], 'length'); - * // => { '3': ['one', 'two'], '5': ['three'] } - */ - function groupBy(collection, callback, thisArg) { - var result = {}; - callback = createCallback(callback, thisArg); - - forEach(collection, function(value, key, collection) { - key = callback(value, key, collection); - (hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value); - }); - return result; - } - - /** - * Invokes the method named by `methodName` on each element in the `collection`, - * returning an array of the results of each invoked method. Additional arguments - * will be passed to each invoked method. If `methodName` is a function it will - * be invoked for, and `this` bound to, each element in the `collection`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} methodName The name of the method to invoke or - * the function invoked per iteration. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the method with. - * @returns {Array} Returns a new array of the results of each invoked method. - * @example - * - * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort'); - * // => [[1, 5, 7], [1, 2, 3]] - * - * _.invoke([123, 456], String.prototype.split, ''); - * // => [['1', '2', '3'], ['4', '5', '6']] - */ - function invoke(collection, methodName) { - var args = slice(arguments, 2), - isFunc = typeof methodName == 'function', - result = []; - - forEach(collection, function(value) { - result.push((isFunc ? methodName : value[methodName]).apply(value, args)); - }); - return result; - } - - /** - * Creates an array of values by running each element in the `collection` - * through a `callback`. The `callback` is bound to `thisArg` and invoked with - * three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias collect - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of the results of each `callback` execution. - * @example - * - * _.map([1, 2, 3], function(num) { return num * 3; }); - * // => [3, 6, 9] - * - * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; }); - * // => [3, 6, 9] (order is not guaranteed) - */ - function map(collection, callback, thisArg) { - var index = -1, - length = collection ? collection.length : 0, - result = Array(typeof length == 'number' ? length : 0); - - callback = createCallback(callback, thisArg); - if (isArray(collection)) { - while (++index < length) { - result[index] = callback(collection[index], index, collection); - } - } else { - each(collection, function(value, key, collection) { - result[++index] = callback(value, key, collection); - }); - } - return result; - } - - /** - * Retrieves the maximum value of an `array`. If `callback` is passed, - * it will be executed for each value in the `array` to generate the - * criterion by which the value is ranked. The `callback` is bound to - * `thisArg` and invoked with three arguments; (value, index, collection). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the maximum value. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.max(stooges, function(stooge) { return stooge.age; }); - * // => { 'name': 'curly', 'age': 60 }; - */ - function max(collection, callback, thisArg) { - var computed = -Infinity, - index = -1, - length = collection ? collection.length : 0, - result = computed; - - if (callback || !isArray(collection)) { - callback = !callback && isString(collection) - ? charAtCallback - : createCallback(callback, thisArg); - - each(collection, function(value, index, collection) { - var current = callback(value, index, collection); - if (current > computed) { - computed = current; - result = value; - } - }); - } else { - while (++index < length) { - if (collection[index] > result) { - result = collection[index]; - } - } - } - return result; - } - - /** - * Retrieves the minimum value of an `array`. If `callback` is passed, - * it will be executed for each value in the `array` to generate the - * criterion by which the value is ranked. The `callback` is bound to `thisArg` - * and invoked with three arguments; (value, index, collection). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the minimum value. - * @example - * - * _.min([10, 5, 100, 2, 1000]); - * // => 2 - */ - function min(collection, callback, thisArg) { - var computed = Infinity, - index = -1, - length = collection ? collection.length : 0, - result = computed; - - if (callback || !isArray(collection)) { - callback = !callback && isString(collection) - ? charAtCallback - : createCallback(callback, thisArg); - - each(collection, function(value, index, collection) { - var current = callback(value, index, collection); - if (current < computed) { - computed = current; - result = value; - } - }); - } else { - while (++index < length) { - if (collection[index] < result) { - result = collection[index]; - } - } - } - return result; - } - - /** - * Retrieves the value of a specified property from all elements in - * the `collection`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {String} property The property to pluck. - * @returns {Array} Returns a new array of property values. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.pluck(stooges, 'name'); - * // => ['moe', 'larry', 'curly'] - */ - function pluck(collection, property) { - return map(collection, property + ''); - } - - /** - * Boils down a `collection` to a single value. The initial state of the - * reduction is `accumulator` and each successive step of it should be returned - * by the `callback`. The `callback` is bound to `thisArg` and invoked with 4 - * arguments; for arrays they are (accumulator, value, index|key, collection). - * - * @static - * @memberOf _ - * @alias foldl, inject - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [accumulator] Initial value of the accumulator. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the accumulated value. - * @example - * - * var sum = _.reduce([1, 2, 3], function(memo, num) { return memo + num; }); - * // => 6 - */ - function reduce(collection, callback, accumulator, thisArg) { - var noaccum = arguments.length < 3; - callback = createCallback(callback, thisArg, indicatorObject); - - if (isArray(collection)) { - var index = -1, - length = collection.length; - - if (noaccum) { - accumulator = collection[++index]; - } - while (++index < length) { - accumulator = callback(accumulator, collection[index], index, collection); - } - } else { - each(collection, function(value, index, collection) { - accumulator = noaccum - ? (noaccum = false, value) - : callback(accumulator, value, index, collection) - }); - } - return accumulator; - } - - /** - * The right-associative version of `_.reduce`. - * - * @static - * @memberOf _ - * @alias foldr - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [accumulator] Initial value of the accumulator. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Mixed} Returns the accumulated value. - * @example - * - * var list = [[0, 1], [2, 3], [4, 5]]; - * var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []); - * // => [4, 5, 2, 3, 0, 1] - */ - function reduceRight(collection, callback, accumulator, thisArg) { - var iteratee = collection, - length = collection ? collection.length : 0, - noaccum = arguments.length < 3; - - if (typeof length != 'number') { - var props = keys(collection); - length = props.length; - } else if (noCharByIndex && isString(collection)) { - iteratee = collection.split(''); - } - callback = createCallback(callback, thisArg, indicatorObject); - forEach(collection, function(value, index, collection) { - index = props ? props[--length] : --length; - accumulator = noaccum - ? (noaccum = false, iteratee[index]) - : callback(accumulator, iteratee[index], index, collection); - }); - return accumulator; - } - - /** - * The opposite of `_.filter`, this method returns the values of a - * `collection` that `callback` does **not** return truthy for. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of elements that did **not** pass the - * callback check. - * @example - * - * var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; }); - * // => [1, 3, 5] - */ - function reject(collection, callback, thisArg) { - callback = createCallback(callback, thisArg); - return filter(collection, function(value, index, collection) { - return !callback(value, index, collection); - }); - } - - /** - * Creates an array of shuffled `array` values, using a version of the - * Fisher-Yates shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to shuffle. - * @returns {Array} Returns a new shuffled collection. - * @example - * - * _.shuffle([1, 2, 3, 4, 5, 6]); - * // => [4, 1, 6, 3, 5, 2] - */ - function shuffle(collection) { - var index = -1, - result = Array(collection ? collection.length : 0); - - forEach(collection, function(value) { - var rand = floor(nativeRandom() * (++index + 1)); - result[index] = result[rand]; - result[rand] = value; - }); - return result; - } - - /** - * Gets the size of the `collection` by returning `collection.length` for arrays - * and array-like objects or the number of own enumerable properties for objects. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to inspect. - * @returns {Number} Returns `collection.length` or number of own enumerable properties. - * @example - * - * _.size([1, 2]); - * // => 2 - * - * _.size({ 'one': 1, 'two': 2, 'three': 3 }); - * // => 3 - * - * _.size('curly'); - * // => 5 - */ - function size(collection) { - var length = collection ? collection.length : 0; - return typeof length == 'number' ? length : keys(collection).length; - } - - /** - * Checks if the `callback` returns a truthy value for **any** element of a - * `collection`. The function returns as soon as it finds passing value, and - * does not iterate over the entire `collection`. The `callback` is bound to - * `thisArg` and invoked with three arguments; (value, index|key, collection). - * - * @static - * @memberOf _ - * @alias any - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Boolean} Returns `true` if any element passes the callback check, - * else `false`. - * @example - * - * _.some([null, 0, 'yes', false], Boolean); - * // => true - */ - function some(collection, callback, thisArg) { - var result; - callback = createCallback(callback, thisArg); - - if (isArray(collection)) { - var index = -1, - length = collection.length; - - while (++index < length) { - if ((result = callback(collection[index], index, collection))) { - break; - } - } - } else { - each(collection, function(value, index, collection) { - return !(result = callback(value, index, collection)); - }); - } - return !!result; - } - - /** - * Creates an array, stable sorted in ascending order by the results of - * running each element of `collection` through a `callback`. The `callback` - * is bound to `thisArg` and invoked with three arguments; (value, index|key, collection). - * The `callback` argument may also be the name of a property to sort by (e.g. 'length'). - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Function|String} callback|property The function called per iteration - * or property name to sort by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a new array of sorted elements. - * @example - * - * _.sortBy([1, 2, 3], function(num) { return Math.sin(num); }); - * // => [3, 1, 2] - * - * _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math); - * // => [3, 1, 2] - * - * _.sortBy(['larry', 'brendan', 'moe'], 'length'); - * // => ['moe', 'larry', 'brendan'] - */ - function sortBy(collection, callback, thisArg) { - var result = []; - callback = createCallback(callback, thisArg); - - forEach(collection, function(value, index, collection) { - result.push({ - 'criteria': callback(value, index, collection), - 'index': index, - 'value': value - }); - }); - - var length = result.length; - result.sort(compareAscending); - while (length--) { - result[length] = result[length].value; - } - return result; - } - - /** - * Converts the `collection` to an array. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to convert. - * @returns {Array} Returns the new converted array. - * @example - * - * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4); - * // => [2, 3, 4] - */ - function toArray(collection) { - var length = collection ? collection.length : 0; - if (typeof length == 'number') { - return noCharByIndex && isString(collection) - ? collection.split('') - : slice(collection); - } - return values(collection); - } - - /** - * Examines each element in a `collection`, returning an array of all elements - * that contain the given `properties`. - * - * @static - * @memberOf _ - * @category Collections - * @param {Array|Object|String} collection The collection to iterate over. - * @param {Object} properties The object of property values to filter by. - * @returns {Array} Returns a new array of elements that contain the given `properties`. - * @example - * - * var stooges = [ - * { 'name': 'moe', 'age': 40 }, - * { 'name': 'larry', 'age': 50 }, - * { 'name': 'curly', 'age': 60 } - * ]; - * - * _.where(stooges, { 'age': 40 }); - * // => [{ 'name': 'moe', 'age': 40 }] - */ - function where(collection, properties) { - var props = keys(properties); - return filter(collection, function(object) { - var length = props.length; - while (length--) { - var result = object[props[length]] === properties[props[length]]; - if (!result) { - break; - } - } - return !!result; - }); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Creates an array with all falsey values of `array` removed. The values - * `false`, `null`, `0`, `""`, `undefined` and `NaN` are all falsey. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to compact. - * @returns {Array} Returns a new filtered array. - * @example - * - * _.compact([0, 1, false, 2, '', 3]); - * // => [1, 2, 3] - */ - function compact(array) { - var index = -1, - length = array ? array.length : 0, - result = []; - - while (++index < length) { - var value = array[index]; - if (value) { - result.push(value); - } - } - return result; - } - - /** - * Creates an array of `array` elements not present in the other arrays - * using strict equality for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to process. - * @param {Array} [array1, array2, ...] Arrays to check. - * @returns {Array} Returns a new array of `array` elements not present in the - * other arrays. - * @example - * - * _.difference([1, 2, 3, 4, 5], [5, 2, 10]); - * // => [1, 3, 4] - */ - function difference(array) { - var index = -1, - length = array ? array.length : 0, - flattened = concat.apply(arrayRef, arguments), - contains = cachedContains(flattened, length), - result = []; - - while (++index < length) { - var value = array[index]; - if (!contains(value)) { - result.push(value); - } - } - return result; - } - - /** - * Gets the first element of the `array`. Pass `n` to return the first `n` - * elements of the `array`. - * - * @static - * @memberOf _ - * @alias head, take - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n] The number of elements to return. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Mixed} Returns the first element, or an array of the first `n` - * elements, of `array`. - * @example - * - * _.first([5, 4, 3, 2, 1]); - * // => 5 - */ - function first(array, n, guard) { - if (array) { - var length = array.length; - return (n == null || guard) - ? array[0] - : slice(array, 0, nativeMin(nativeMax(0, n), length)); - } - } - - /** - * Flattens a nested array (the nesting can be to any depth). If `shallow` is - * truthy, `array` will only be flattened a single level. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to compact. - * @param {Boolean} shallow A flag to indicate only flattening a single level. - * @returns {Array} Returns a new flattened array. - * @example - * - * _.flatten([1, [2], [3, [[4]]]]); - * // => [1, 2, 3, 4]; - * - * _.flatten([1, [2], [3, [[4]]]], true); - * // => [1, 2, 3, [[4]]]; - */ - function flatten(array, shallow) { - var index = -1, - length = array ? array.length : 0, - result = []; - - while (++index < length) { - var value = array[index]; - - // recursively flatten arrays (susceptible to call stack limits) - if (isArray(value)) { - push.apply(result, shallow ? value : flatten(value)); - } else { - result.push(value); - } - } - return result; - } - - /** - * Gets the index at which the first occurrence of `value` is found using - * strict equality for comparisons, i.e. `===`. If the `array` is already - * sorted, passing `true` for `fromIndex` will run a faster binary search. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Boolean|Number} [fromIndex=0] The index to search from or `true` to - * perform a binary search on a sorted `array`. - * @returns {Number} Returns the index of the matched value or `-1`. - * @example - * - * _.indexOf([1, 2, 3, 1, 2, 3], 2); - * // => 1 - * - * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3); - * // => 4 - * - * _.indexOf([1, 1, 2, 2, 3, 3], 2, true); - * // => 2 - */ - function indexOf(array, value, fromIndex) { - var index = -1, - length = array ? array.length : 0; - - if (typeof fromIndex == 'number') { - index = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0) - 1; - } else if (fromIndex) { - index = sortedIndex(array, value); - return array[index] === value ? index : -1; - } - while (++index < length) { - if (array[index] === value) { - return index; - } - } - return -1; - } - - /** - * Gets all but the last element of `array`. Pass `n` to exclude the last `n` - * elements from the result. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n=1] The number of elements to exclude. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Array} Returns all but the last element, or `n` elements, of `array`. - * @example - * - * _.initial([3, 2, 1]); - * // => [3, 2] - */ - function initial(array, n, guard) { - if (!array) { - return []; - } - var length = array.length; - n = n == null || guard ? 1 : n || 0; - return slice(array, 0, nativeMin(nativeMax(0, length - n), length)); - } - - /** - * Computes the intersection of all the passed-in arrays using strict equality - * for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of unique elements that are present - * in **all** of the arrays. - * @example - * - * _.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]); - * // => [1, 2] - */ - function intersection(array) { - var args = arguments, - argsLength = args.length, - cache = { '0': {} }, - index = -1, - length = array ? array.length : 0, - isLarge = length >= 100, - result = [], - seen = result; - - outer: - while (++index < length) { - var value = array[index]; - if (isLarge) { - var key = value + ''; - var inited = hasOwnProperty.call(cache[0], key) - ? !(seen = cache[0][key]) - : (seen = cache[0][key] = []); - } - if (inited || indexOf(seen, value) < 0) { - if (isLarge) { - seen.push(value); - } - var argsIndex = argsLength; - while (--argsIndex) { - if (!(cache[argsIndex] || (cache[argsIndex] = cachedContains(args[argsIndex], 0, 100)))(value)) { - continue outer; - } - } - result.push(value); - } - } - return result; - } - - /** - * Gets the last element of the `array`. Pass `n` to return the last `n` - * elements of the `array`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n] The number of elements to return. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Mixed} Returns the last element, or an array of the last `n` - * elements, of `array`. - * @example - * - * _.last([3, 2, 1]); - * // => 1 - */ - function last(array, n, guard) { - if (array) { - var length = array.length; - return (n == null || guard) ? array[length - 1] : slice(array, nativeMax(0, length - n)); - } - } - - /** - * Gets the index at which the last occurrence of `value` is found using strict - * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used - * as the offset from the end of the collection. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to search. - * @param {Mixed} value The value to search for. - * @param {Number} [fromIndex=array.length-1] The index to search from. - * @returns {Number} Returns the index of the matched value or `-1`. - * @example - * - * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2); - * // => 4 - * - * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3); - * // => 1 - */ - function lastIndexOf(array, value, fromIndex) { - var index = array ? array.length : 0; - if (typeof fromIndex == 'number') { - index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1; - } - while (index--) { - if (array[index] === value) { - return index; - } - } - return -1; - } - - /** - * Creates an object composed from arrays of `keys` and `values`. Pass either - * a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]`, or - * two arrays, one of `keys` and one of corresponding `values`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} keys The array of keys. - * @param {Array} [values=[]] The array of values. - * @returns {Object} Returns an object composed of the given keys and - * corresponding values. - * @example - * - * _.object(['moe', 'larry', 'curly'], [30, 40, 50]); - * // => { 'moe': 30, 'larry': 40, 'curly': 50 } - */ - function object(keys, values) { - var index = -1, - length = keys ? keys.length : 0, - result = {}; - - while (++index < length) { - var key = keys[index]; - if (values) { - result[key] = values[index]; - } else { - result[key[0]] = key[1]; - } - } - return result; - } - - /** - * Creates an array of numbers (positive and/or negative) progressing from - * `start` up to but not including `stop`. This method is a port of Python's - * `range()` function. See http://docs.python.org/library/functions.html#range. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Number} [start=0] The start of the range. - * @param {Number} end The end of the range. - * @param {Number} [step=1] The value to increment or descrement by. - * @returns {Array} Returns a new range array. - * @example - * - * _.range(10); - * // => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] - * - * _.range(1, 11); - * // => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] - * - * _.range(0, 30, 5); - * // => [0, 5, 10, 15, 20, 25] - * - * _.range(0, -10, -1); - * // => [0, -1, -2, -3, -4, -5, -6, -7, -8, -9] - * - * _.range(0); - * // => [] - */ - function range(start, end, step) { - start = +start || 0; - step = +step || 1; - - if (end == null) { - end = start; - start = 0; - } - // use `Array(length)` so V8 will avoid the slower "dictionary" mode - // http://youtu.be/XAqIpGU8ZZk#t=17m25s - var index = -1, - length = nativeMax(0, ceil((end - start) / step)), - result = Array(length); - - while (++index < length) { - result[index] = start; - start += step; - } - return result; - } - - /** - * The opposite of `_.initial`, this method gets all but the first value of - * `array`. Pass `n` to exclude the first `n` values from the result. - * - * @static - * @memberOf _ - * @alias drop, tail - * @category Arrays - * @param {Array} array The array to query. - * @param {Number} [n=1] The number of elements to exclude. - * @param- {Object} [guard] Internally used to allow this method to work with - * others like `_.map` without using their callback `index` argument for `n`. - * @returns {Array} Returns all but the first element, or `n` elements, of `array`. - * @example - * - * _.rest([3, 2, 1]); - * // => [2, 1] - */ - function rest(array, n, guard) { - return slice(array, (n == null || guard) ? 1 : nativeMax(0, n)); - } - - /** - * Uses a binary search to determine the smallest index at which the `value` - * should be inserted into `array` in order to maintain the sort order of the - * sorted `array`. If `callback` is passed, it will be executed for `value` and - * each element in `array` to compute their sort ranking. The `callback` is - * bound to `thisArg` and invoked with one argument; (value). The `callback` - * argument may also be the name of a property to order by. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to iterate over. - * @param {Mixed} value The value to evaluate. - * @param {Function|String} [callback=identity|property] The function called - * per iteration or property name to order by. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Number} Returns the index at which the value should be inserted - * into `array`. - * @example - * - * _.sortedIndex([20, 30, 50], 40); - * // => 2 - * - * _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x'); - * // => 2 - * - * var dict = { - * 'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 } - * }; - * - * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { - * return dict.wordToNumber[word]; - * }); - * // => 2 - * - * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) { - * return this.wordToNumber[word]; - * }, dict); - * // => 2 - */ - function sortedIndex(array, value, callback, thisArg) { - var low = 0, - high = array ? array.length : low; - - // explicitly reference `identity` for better inlining in Firefox - callback = callback ? createCallback(callback, thisArg) : identity; - value = callback(value); - - while (low < high) { - var mid = (low + high) >>> 1; - callback(array[mid]) < value - ? low = mid + 1 - : high = mid; - } - return low; - } - - /** - * Computes the union of the passed-in arrays using strict equality for - * comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of unique values, in order, that are - * present in one or more of the arrays. - * @example - * - * _.union([1, 2, 3], [101, 2, 1, 10], [2, 1]); - * // => [1, 2, 3, 101, 10] - */ - function union() { - return uniq(concat.apply(arrayRef, arguments)); - } - - /** - * Creates a duplicate-value-free version of the `array` using strict equality - * for comparisons, i.e. `===`. If the `array` is already sorted, passing `true` - * for `isSorted` will run a faster algorithm. If `callback` is passed, each - * element of `array` is passed through a callback` before uniqueness is computed. - * The `callback` is bound to `thisArg` and invoked with three arguments; (value, index, array). - * - * @static - * @memberOf _ - * @alias unique - * @category Arrays - * @param {Array} array The array to process. - * @param {Boolean} [isSorted=false] A flag to indicate that the `array` is already sorted. - * @param {Function} [callback=identity] The function called per iteration. - * @param {Mixed} [thisArg] The `this` binding of `callback`. - * @returns {Array} Returns a duplicate-value-free array. - * @example - * - * _.uniq([1, 2, 1, 3, 1]); - * // => [1, 2, 3] - * - * _.uniq([1, 1, 2, 2, 3], true); - * // => [1, 2, 3] - * - * _.uniq([1, 2, 1.5, 3, 2.5], function(num) { return Math.floor(num); }); - * // => [1, 2, 3] - * - * _.uniq([1, 2, 1.5, 3, 2.5], function(num) { return this.floor(num); }, Math); - * // => [1, 2, 3] - */ - function uniq(array, isSorted, callback, thisArg) { - var index = -1, - length = array ? array.length : 0, - result = [], - seen = result; - - // juggle arguments - if (typeof isSorted == 'function') { - thisArg = callback; - callback = isSorted; - isSorted = false; - } - // init value cache for large arrays - var isLarge = !isSorted && length >= 75; - if (isLarge) { - var cache = {}; - } - if (callback) { - seen = []; - callback = createCallback(callback, thisArg); - } - while (++index < length) { - var value = array[index], - computed = callback ? callback(value, index, array) : value; - - if (isLarge) { - var key = computed + ''; - var inited = hasOwnProperty.call(cache, key) - ? !(seen = cache[key]) - : (seen = cache[key] = []); - } - if (isSorted - ? !index || seen[seen.length - 1] !== computed - : inited || indexOf(seen, computed) < 0 - ) { - if (callback || isLarge) { - seen.push(computed); - } - result.push(value); - } - } - return result; - } - - /** - * Creates an array with all occurrences of the passed values removed using - * strict equality for comparisons, i.e. `===`. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} array The array to filter. - * @param {Mixed} [value1, value2, ...] Values to remove. - * @returns {Array} Returns a new filtered array. - * @example - * - * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1); - * // => [2, 3, 4] - */ - function without(array) { - var index = -1, - length = array ? array.length : 0, - contains = cachedContains(arguments, 1, 20), - result = []; - - while (++index < length) { - var value = array[index]; - if (!contains(value)) { - result.push(value); - } - } - return result; - } - - /** - * Groups the elements of each array at their corresponding indexes. Useful for - * separate data sources that are coordinated through matching array indexes. - * For a matrix of nested arrays, `_.zip.apply(...)` can transpose the matrix - * in a similar fashion. - * - * @static - * @memberOf _ - * @category Arrays - * @param {Array} [array1, array2, ...] Arrays to process. - * @returns {Array} Returns a new array of grouped elements. - * @example - * - * _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]); - * // => [['moe', 30, true], ['larry', 40, false], ['curly', 50, false]] - */ - function zip(array) { - var index = -1, - length = array ? max(pluck(arguments, 'length')) : 0, - result = Array(length); - - while (++index < length) { - result[index] = pluck(arguments, index); - } - return result; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Creates a function that is restricted to executing `func` only after it is - * called `n` times. The `func` is executed with the `this` binding of the - * created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Number} n The number of times the function must be called before - * it is executed. - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var renderNotes = _.after(notes.length, render); - * _.forEach(notes, function(note) { - * note.asyncSave({ 'success': renderNotes }); - * }); - * // `renderNotes` is run once, after all notes have saved - */ - function after(n, func) { - if (n < 1) { - return func(); - } - return function() { - if (--n < 1) { - return func.apply(this, arguments); - } - }; - } - - /** - * Creates a function that, when called, invokes `func` with the `this` - * binding of `thisArg` and prepends any additional `bind` arguments to those - * passed to the bound function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to bind. - * @param {Mixed} [thisArg] The `this` binding of `func`. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * var func = function(greeting) { - * return greeting + ' ' + this.name; - * }; - * - * func = _.bind(func, { 'name': 'moe' }, 'hi'); - * func(); - * // => 'hi moe' - */ - function bind(func, thisArg) { - // use `Function#bind` if it exists and is fast - // (in V8 `Function#bind` is slower except when partially applied) - return isBindFast || (nativeBind && arguments.length > 2) - ? nativeBind.call.apply(nativeBind, arguments) - : createBound(func, thisArg, slice(arguments, 2)); - } - - /** - * Binds methods on `object` to `object`, overwriting the existing method. - * If no method names are provided, all the function properties of `object` - * will be bound. - * - * @static - * @memberOf _ - * @category Functions - * @param {Object} object The object to bind and assign the bound methods to. - * @param {String} [methodName1, methodName2, ...] Method names on the object to bind. - * @returns {Object} Returns `object`. - * @example - * - * var buttonView = { - * 'label': 'lodash', - * 'onClick': function() { alert('clicked: ' + this.label); } - * }; - * - * _.bindAll(buttonView); - * jQuery('#lodash_button').on('click', buttonView.onClick); - * // => When the button is clicked, `this.label` will have the correct value - */ - function bindAll(object) { - var funcs = arguments, - index = funcs.length > 1 ? 0 : (funcs = functions(object), -1), - length = funcs.length; - - while (++index < length) { - var key = funcs[index]; - object[key] = bind(object[key], object); - } - return object; - } - - /** - * Creates a function that, when called, invokes the method at `object[key]` - * and prepends any additional `bindKey` arguments to those passed to the bound - * function. This method differs from `_.bind` by allowing bound functions to - * reference methods that will be redefined or don't yet exist. - * See http://michaux.ca/articles/lazy-function-definition-pattern. - * - * @static - * @memberOf _ - * @category Functions - * @param {Object} object The object the method belongs to. - * @param {String} key The key of the method. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new bound function. - * @example - * - * var object = { - * 'name': 'moe', - * 'greet': function(greeting) { - * return greeting + ' ' + this.name; - * } - * }; - * - * var func = _.bindKey(object, 'greet', 'hi'); - * func(); - * // => 'hi moe' - * - * object.greet = function(greeting) { - * return greeting + ', ' + this.name + '!'; - * }; - * - * func(); - * // => 'hi, moe!' - */ - function bindKey(object, key) { - return createBound(object, key, slice(arguments, 2)); - } - - /** - * Creates a function that is the composition of the passed functions, - * where each function consumes the return value of the function that follows. - * In math terms, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`. - * Each function is executed with the `this` binding of the composed function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} [func1, func2, ...] Functions to compose. - * @returns {Function} Returns the new composed function. - * @example - * - * var greet = function(name) { return 'hi: ' + name; }; - * var exclaim = function(statement) { return statement + '!'; }; - * var welcome = _.compose(exclaim, greet); - * welcome('moe'); - * // => 'hi: moe!' - */ - function compose() { - var funcs = arguments; - return function() { - var args = arguments, - length = funcs.length; - - while (length--) { - args = [funcs[length].apply(this, args)]; - } - return args[0]; - }; - } - - /** - * Creates a function that will delay the execution of `func` until after - * `wait` milliseconds have elapsed since the last time it was invoked. Pass - * `true` for `immediate` to cause debounce to invoke `func` on the leading, - * instead of the trailing, edge of the `wait` timeout. Subsequent calls to - * the debounced function will return the result of the last `func` call. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to debounce. - * @param {Number} wait The number of milliseconds to delay. - * @param {Boolean} immediate A flag to indicate execution is on the leading - * edge of the timeout. - * @returns {Function} Returns the new debounced function. - * @example - * - * var lazyLayout = _.debounce(calculateLayout, 300); - * jQuery(window).on('resize', lazyLayout); - */ - function debounce(func, wait, immediate) { - var args, - result, - thisArg, - timeoutId; - - function delayed() { - timeoutId = null; - if (!immediate) { - result = func.apply(thisArg, args); - } - } - return function() { - var isImmediate = immediate && !timeoutId; - args = arguments; - thisArg = this; - - clearTimeout(timeoutId); - timeoutId = setTimeout(delayed, wait); - - if (isImmediate) { - result = func.apply(thisArg, args); - } - return result; - }; - } - - /** - * Executes the `func` function after `wait` milliseconds. Additional arguments - * will be passed to `func` when it is invoked. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to delay. - * @param {Number} wait The number of milliseconds to delay execution. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the function with. - * @returns {Number} Returns the `setTimeout` timeout id. - * @example - * - * var log = _.bind(console.log, console); - * _.delay(log, 1000, 'logged later'); - * // => 'logged later' (Appears after one second.) - */ - function delay(func, wait) { - var args = slice(arguments, 2); - return setTimeout(function() { func.apply(undefined, args); }, wait); - } - - /** - * Defers executing the `func` function until the current call stack has cleared. - * Additional arguments will be passed to `func` when it is invoked. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to defer. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the function with. - * @returns {Number} Returns the `setTimeout` timeout id. - * @example - * - * _.defer(function() { alert('deferred'); }); - * // returns from the function before `alert` is called - */ - function defer(func) { - var args = slice(arguments, 1); - return setTimeout(function() { func.apply(undefined, args); }, 1); - } - - /** - * Creates a function that memoizes the result of `func`. If `resolver` is - * passed, it will be used to determine the cache key for storing the result - * based on the arguments passed to the memoized function. By default, the first - * argument passed to the memoized function is used as the cache key. The `func` - * is executed with the `this` binding of the memoized function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to have its output memoized. - * @param {Function} [resolver] A function used to resolve the cache key. - * @returns {Function} Returns the new memoizing function. - * @example - * - * var fibonacci = _.memoize(function(n) { - * return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2); - * }); - */ - function memoize(func, resolver) { - var cache = {}; - return function() { - var key = resolver ? resolver.apply(this, arguments) : arguments[0]; - return hasOwnProperty.call(cache, key) - ? cache[key] - : (cache[key] = func.apply(this, arguments)); - }; - } - - /** - * Creates a function that is restricted to execute `func` once. Repeat calls to - * the function will return the value of the first call. The `func` is executed - * with the `this` binding of the created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to restrict. - * @returns {Function} Returns the new restricted function. - * @example - * - * var initialize = _.once(createApplication); - * initialize(); - * initialize(); - * // Application is only created once. - */ - function once(func) { - var result, - ran = false; - - return function() { - if (ran) { - return result; - } - ran = true; - result = func.apply(this, arguments); - - // clear the `func` variable so the function may be garbage collected - func = null; - return result; - }; - } - - /** - * Creates a function that, when called, invokes `func` with any additional - * `partial` arguments prepended to those passed to the new function. This - * method is similar to `bind`, except it does **not** alter the `this` binding. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to partially apply arguments to. - * @param {Mixed} [arg1, arg2, ...] Arguments to be partially applied. - * @returns {Function} Returns the new partially applied function. - * @example - * - * var greet = function(greeting, name) { return greeting + ': ' + name; }; - * var hi = _.partial(greet, 'hi'); - * hi('moe'); - * // => 'hi: moe' - */ - function partial(func) { - return createBound(func, slice(arguments, 1)); - } - - /** - * Creates a function that, when executed, will only call the `func` - * function at most once per every `wait` milliseconds. If the throttled - * function is invoked more than once during the `wait` timeout, `func` will - * also be called on the trailing edge of the timeout. Subsequent calls to the - * throttled function will return the result of the last `func` call. - * - * @static - * @memberOf _ - * @category Functions - * @param {Function} func The function to throttle. - * @param {Number} wait The number of milliseconds to throttle executions to. - * @returns {Function} Returns the new throttled function. - * @example - * - * var throttled = _.throttle(updatePosition, 100); - * jQuery(window).on('scroll', throttled); - */ - function throttle(func, wait) { - var args, - result, - thisArg, - timeoutId, - lastCalled = 0; - - function trailingCall() { - lastCalled = new Date; - timeoutId = null; - result = func.apply(thisArg, args); - } - return function() { - var now = new Date, - remaining = wait - (now - lastCalled); - - args = arguments; - thisArg = this; - - if (remaining <= 0) { - clearTimeout(timeoutId); - timeoutId = null; - lastCalled = now; - result = func.apply(thisArg, args); - } - else if (!timeoutId) { - timeoutId = setTimeout(trailingCall, remaining); - } - return result; - }; - } - - /** - * Creates a function that passes `value` to the `wrapper` function as its - * first argument. Additional arguments passed to the function are appended - * to those passed to the `wrapper` function. The `wrapper` is executed with - * the `this` binding of the created function. - * - * @static - * @memberOf _ - * @category Functions - * @param {Mixed} value The value to wrap. - * @param {Function} wrapper The wrapper function. - * @returns {Function} Returns the new function. - * @example - * - * var hello = function(name) { return 'hello ' + name; }; - * hello = _.wrap(hello, function(func) { - * return 'before, ' + func('moe') + ', after'; - * }); - * hello(); - * // => 'before, hello moe, after' - */ - function wrap(value, wrapper) { - return function() { - var args = [value]; - push.apply(args, arguments); - return wrapper.apply(this, args); - }; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their - * corresponding HTML entities. - * - * @static - * @memberOf _ - * @category Utilities - * @param {String} string The string to escape. - * @returns {String} Returns the escaped string. - * @example - * - * _.escape('Moe, Larry & Curly'); - * // => 'Moe, Larry & Curly' - */ - function escape(string) { - return string == null ? '' : (string + '').replace(reUnescapedHtml, escapeHtmlChar); - } - - /** - * This function returns the first argument passed to it. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Mixed} value Any value. - * @returns {Mixed} Returns `value`. - * @example - * - * var moe = { 'name': 'moe' }; - * moe === _.identity(moe); - * // => true - */ - function identity(value) { - return value; - } - - /** - * Adds functions properties of `object` to the `lodash` function and chainable - * wrapper. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Object} object The object of function properties to add to `lodash`. - * @example - * - * _.mixin({ - * 'capitalize': function(string) { - * return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase(); - * } - * }); - * - * _.capitalize('larry'); - * // => 'Larry' - * - * _('curly').capitalize(); - * // => 'Curly' - */ - function mixin(object) { - forEach(functions(object), function(methodName) { - var func = lodash[methodName] = object[methodName]; - - lodash.prototype[methodName] = function() { - var args = [this.__wrapped__]; - push.apply(args, arguments); - - var result = func.apply(lodash, args); - return new lodash(result); - }; - }); - } - - /** - * Reverts the '_' variable to its previous value and returns a reference to - * the `lodash` function. - * - * @static - * @memberOf _ - * @category Utilities - * @returns {Function} Returns the `lodash` function. - * @example - * - * var lodash = _.noConflict(); - */ - function noConflict() { - window._ = oldDash; - return this; - } - - /** - * Produces a random number between `min` and `max` (inclusive). If only one - * argument is passed, a number between `0` and the given number will be returned. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Number} [min=0] The minimum possible value. - * @param {Number} [max=1] The maximum possible value. - * @returns {Number} Returns a random number. - * @example - * - * _.random(0, 5); - * // => a number between 1 and 5 - * - * _.random(5); - * // => also a number between 1 and 5 - */ - function random(min, max) { - if (min == null && max == null) { - max = 1; - } - min = +min || 0; - if (max == null) { - max = min; - min = 0; - } - return min + floor(nativeRandom() * ((+max || 0) - min + 1)); - } - - /** - * Resolves the value of `property` on `object`. If `property` is a function - * it will be invoked and its result returned, else the property value is - * returned. If `object` is falsey, then `null` is returned. - * - * @static - * @memberOf _ - * @category Utilities - * @param {Object} object The object to inspect. - * @param {String} property The property to get the value of. - * @returns {Mixed} Returns the resolved value. - * @example - * - * var object = { - * 'cheese': 'crumpets', - * 'stuff': function() { - * return 'nonsense'; - * } - * }; - * - * _.result(object, 'cheese'); - * // => 'crumpets' - * - * _.result(object, 'stuff'); - * // => 'nonsense' - */ - function result(object, property) { - // based on Backbone's private `getValue` function - // https://github.com/documentcloud/backbone/blob/0.9.2/backbone.js#L1419-1424 - var value = object ? object[property] : null; - return isFunction(value) ? object[property]() : value; - } - - /** - * A micro-templating method that handles arbitrary delimiters, preserves - * whitespace, and correctly escapes quotes within interpolated code. - * - * Note: In the development build `_.template` utilizes sourceURLs for easier - * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl - * - * Note: Lo-Dash may be used in Chrome extensions by either creating a `lodash csp` - * build and avoiding `_.template` use, or loading Lo-Dash in a sandboxed page. - * See http://developer.chrome.com/trunk/extensions/sandboxingEval.html - * - * @static - * @memberOf _ - * @category Utilities - * @param {String} text The template text. - * @param {Obect} data The data object used to populate the text. - * @param {Object} options The options object. - * escape - The "escape" delimiter regexp. - * evaluate - The "evaluate" delimiter regexp. - * interpolate - The "interpolate" delimiter regexp. - * sourceURL - The sourceURL of the template's compiled source. - * variable - The data object variable name. - * - * @returns {Function|String} Returns a compiled function when no `data` object - * is given, else it returns the interpolated text. - * @example - * - * // using a compiled template - * var compiled = _.template('hello <%= name %>'); - * compiled({ 'name': 'moe' }); - * // => 'hello moe' - * - * var list = '<% _.forEach(people, function(name) { %>
  • <%= name %>
    • <% }); %>'; - * _.template(list, { 'people': ['moe', 'larry', 'curly'] }); - * // => '
  • moe
  • larry
  • curly
    • ' - * - * // using the "escape" delimiter to escape HTML in data property values - * _.template('<%- value %>', { 'value': '