76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
goog.provide('ol.source.XYZ');
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goog.provide('ol.source.XYZOptions');
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goog.require('ol.Attribution');
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goog.require('ol.Projection');
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goog.require('ol.TileUrlFunction');
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goog.require('ol.TileUrlFunctionType');
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goog.require('ol.proj');
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goog.require('ol.source.ImageTileSource');
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goog.require('ol.tilegrid.XYZ');
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/**
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* @typedef {{attributions: (Array.<ol.Attribution>|undefined),
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* crossOrigin: (string|undefined),
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* extent: (ol.Extent|undefined),
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* logo: (string|undefined),
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* maxZoom: number,
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* minZoom: (number|undefined),
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* projection: (ol.Projection|undefined),
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* tileUrlFunction: (ol.TileUrlFunctionType|undefined),
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* url: (string|undefined),
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* urls: (Array.<string>|undefined)}}
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*/
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ol.source.XYZOptions;
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/**
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* @constructor
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* @extends {ol.source.ImageTileSource}
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* @param {ol.source.XYZOptions} options XYZ options.
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*/
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ol.source.XYZ = function(options) {
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var projection = options.projection || ol.proj.get('EPSG:3857');
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/**
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* @type {ol.TileUrlFunctionType}
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*/
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var tileUrlFunction = ol.TileUrlFunction.nullTileUrlFunction;
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// FIXME use goog.nullFunction ?
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if (goog.isDef(options.tileUrlFunction)) {
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tileUrlFunction = options.tileUrlFunction;
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} else if (goog.isDef(options.urls)) {
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tileUrlFunction = ol.TileUrlFunction.createFromTemplates(options.urls);
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} else if (goog.isDef(options.url)) {
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tileUrlFunction = ol.TileUrlFunction.createFromTemplates(
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ol.TileUrlFunction.expandUrl(options.url));
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}
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var tileGrid = new ol.tilegrid.XYZ({
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maxZoom: options.maxZoom,
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minZoom: options.minZoom
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});
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var tileCoordTransform = tileGrid.createTileCoordTransform({
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extent: options.extent
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});
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tileUrlFunction = ol.TileUrlFunction.withTileCoordTransform(
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tileCoordTransform, tileUrlFunction);
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goog.base(this, {
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attributions: options.attributions,
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crossOrigin: options.crossOrigin,
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extent: options.extent,
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logo: options.logo,
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projection: projection,
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tileGrid: tileGrid,
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tileUrlFunction: tileUrlFunction
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});
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};
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goog.inherits(ol.source.XYZ, ol.source.ImageTileSource);
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