-/*
- * Called to interlace the bits in x and y, making a Morton code.
- */
-function interlace(x, y) {
- x = (x | (x << 8)) & 0x00ff00ff;
- x = (x | (x << 4)) & 0x0f0f0f0f;
- x = (x | (x << 2)) & 0x33333333;
- x = (x | (x << 1)) & 0x55555555;
-
- y = (y | (y << 8)) & 0x00ff00ff;
- y = (y | (y << 4)) & 0x0f0f0f0f;
- y = (y | (y << 2)) & 0x33333333;
- y = (y | (y << 1)) & 0x55555555;
-
- return (x << 1) | y;
-}
-
-/*
- * Called to create a short code for the short link.
- */
-function makeShortCode(lat, lon, zoom) {
- char_array = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_~";
- var x = Math.round((lon + 180.0) * ((1 << 30) / 90.0));
- var y = Math.round((lat + 90.0) * ((1 << 30) / 45.0));
- // JavaScript only has to keep 32 bits of bitwise operators, so this has to be
- // done in two parts. each of the parts c1/c2 has 30 bits of the total in it
- // and drops the last 4 bits of the full 64 bit Morton code.
- var str = "";
- var c1 = interlace(x >>> 17, y >>> 17), c2 = interlace((x >>> 2) & 0x7fff, (y >>> 2) & 0x7fff);
- for (var i = 0; i < Math.ceil((zoom + 8) / 3.0) && i < 5; ++i) {
- digit = (c1 >> (24 - 6 * i)) & 0x3f;
- str += char_array.charAt(digit);
- }
- for (var i = 5; i < Math.ceil((zoom + 8) / 3.0); ++i) {
- digit = (c2 >> (24 - 6 * (i - 5))) & 0x3f;
- str += char_array.charAt(digit);
- }
- for (var i = 0; i < ((zoom + 8) % 3); ++i) {
- str += "-";
- }
- return str;
-}
-
-/*
- * Click handler to switch a rich text control to preview mode
- */
-function previewRichtext(event) {
- var editor = $(this).parents(".richtext_container").find("textarea");
- var preview = $(this).parents(".richtext_container").find(".richtext_preview");
- var width = editor.outerWidth() - preview.outerWidth() + preview.innerWidth();
- var minHeight = editor.outerHeight() - preview.outerHeight() + preview.innerHeight();
-
- if (preview.contents().length == 0) {
- preview.oneTime(500, "loading", function () {
- preview.addClass("loading");
- });
-
- preview.load(editor.attr("data-preview-url"), { text: editor.val() }, function () {
- preview.stopTime("loading");
- preview.removeClass("loading");
- });
- }
-
- editor.hide();
- preview.width(width);
- preview.css("min-height", minHeight + "px");
- preview.show();
-
- $(this).siblings(".richtext_doedit").prop("disabled", false);
- $(this).prop("disabled", true);
-
- event.preventDefault();
-}
-
-/*
- * Click handler to switch a rich text control to edit mode
- */
-function editRichtext(event) {
- var editor = $(this).parents(".richtext_container").find("textarea");
- var preview = $(this).parents(".richtext_container").find(".richtext_preview");