-/*
- * 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 += "-";