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Add a ol.source.WMTS.createFromCapabilities function

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so that we can create a wmts source directly from a getCapabilities response
(parsed by the wmts parser)
This commit is contained in:
Bruno Binet
2013-03-07 22:22:36 +01:00
parent dc440a6604
commit 13d0b36a08
3 changed files with 161 additions and 0 deletions
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src/ol/tilegrid/wmtstilegrid.js
+30
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@@ -51,3 +51,33 @@ ol.tilegrid.WMTS.prototype.getMatrixId = function(z) {
ol.tilegrid.WMTS.prototype.getMatrixIds = function() {
return this.matrixIds_;
};
/**
* @param {Object} matrixSet An object representing a matrixSet in the
* capabilities document.
* @return {ol.tilegrid.WMTS} WMTS tileGrid instance.
*/
ol.tilegrid.WMTS.createFromCapabilitiesMatrixSet =
function(matrixSet) {
var resolutions = [];
var matrixIds = [];
var origins = [];
var tileSizes = [];
var projection = ol.projection.get(matrixSet['supportedCRS']);
var meters_per_unit = projection.getMetersPerUnit();
goog.array.forEach(matrixSet['matrixIds'], function(elt, index, array) {
matrixIds.push(elt['identifier']);
origins.push(elt['topLeftCorner']);
resolutions.push(elt['scaleDenominator'] * 0.28E-3 / meters_per_unit);
tileSizes.push(new ol.Size(elt['tileWidth'], elt['tileHeight']));
});
return new ol.tilegrid.WMTS({
origins: origins,
resolutions: resolutions,
matrixIds: matrixIds,
tileSizes: tileSizes
});
};