mirror of
https://github.com/FoggedLens/iD.git
synced 2026-02-15 02:02:56 +00:00
38 lines
1.2 KiB
JavaScript
38 lines
1.2 KiB
JavaScript
iD.BackgroundSource = {};
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// derive the url of a 'quadkey' style tile from a coordinate object
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iD.BackgroundSource.template = function(data) {
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var generator = function(coord) {
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var u = '';
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for (var zoom = coord[2]; zoom > 0; zoom--) {
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var byte = 0;
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var mask = 1 << (zoom - 1);
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if ((coord[0] & mask) !== 0) byte++;
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if ((coord[1] & mask) !== 0) byte += 2;
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u += byte.toString();
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}
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return data.template
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.replace('{t}', data.subdomains ?
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data.subdomains[coord[2] % data.subdomains.length] : '')
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.replace('{u}', u)
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.replace('{x}', coord[0])
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.replace('{y}', coord[1])
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.replace('{z}', coord[2]);
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};
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generator.data = data;
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return generator;
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};
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iD.BackgroundSource.Custom = function() {
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var template = window.prompt('Enter a tile template. Valid tokens are {z}, {x}, {y} for Z/X/Y scheme and {u} for quadtile scheme.');
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if (!template) return null;
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return iD.BackgroundSource.template({
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template: template,
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name: 'Custom (customized)'
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});
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};
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iD.BackgroundSource.Custom.data = { 'name': 'Custom' };
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