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openlayers

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Build tools and sources for developing OpenLayers based mapping applications

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goog.provide('ol.source.XYZ'); goog.require('ol'); goog.require('ol.source.TileImage'); goog.require('ol.tilegrid'); /** * @classdesc * Layer source for tile data with URLs in a set XYZ format that are * defined in a URL template. By default, this follows the widely-used * Google grid where `x` 0 and `y` 0 are in the top left. Grids like * TMS where `x` 0 and `y` 0 are in the bottom left can be used by * using the `{-y}` placeholder in the URL template, so long as the * source does not have a custom tile grid. In this case, * {@link ol.source.TileImage} can be used with a `tileUrlFunction` * such as: * * tileUrlFunction: function(coordinate) { * return 'http://mapserver.com/' + coordinate[0] + '/' + * coordinate[1] + '/' + coordinate[2] + '.png'; * } * * * @constructor * @extends {ol.source.TileImage} * @param {olx.source.XYZOptions=} opt_options XYZ options. * @api stable */ ol.source.XYZ = function(opt_options) { var options = opt_options || {}; var projection = options.projection !== undefined ? options.projection : 'EPSG:3857'; var tileGrid = options.tileGrid !== undefined ? options.tileGrid : ol.tilegrid.createXYZ({ extent: ol.tilegrid.extentFromProjection(projection), maxZoom: options.maxZoom, minZoom: options.minZoom, tileSize: options.tileSize }); ol.source.TileImage.call(this, { attributions: options.attributions, cacheSize: options.cacheSize, crossOrigin: options.crossOrigin, logo: options.logo, opaque: options.opaque, projection: projection, reprojectionErrorThreshold: options.reprojectionErrorThreshold, tileGrid: tileGrid, tileLoadFunction: options.tileLoadFunction, tilePixelRatio: options.tilePixelRatio, tileUrlFunction: options.tileUrlFunction, url: options.url, urls: options.urls, wrapX: options.wrapX !== undefined ? options.wrapX : true }); }; ol.inherits(ol.source.XYZ, ol.source.TileImage);