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Add gutter support to TileUrlFunction

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This commit is contained in:
Éric Lemoine
2013-12-09 16:03:24 +01:00
parent fd438f232b
commit e14d8add85
3 changed files with 12 additions and 6 deletions
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14
src/ol/tileurlfunction.js
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@@ -84,14 +84,16 @@ ol.TileUrlFunction.createFromTileUrlFunctions = function(tileUrlFunctions) {
/**
* @param {string} baseUrl Base URL (may have query data).
* @param {Object.<string,*>} params to encode in the URL.
* @param {Object.<string,*>} params Params to encode in the URL.
* @param {number} gutter Gutter value.
* @param {function(this: ol.source.TileImage, string, Object.<string,*>,
* ol.Extent, ol.Size, ol.proj.Projection)} paramsFunction params function.
* @return {ol.TileUrlFunctionType} Tile URL function.
*/
ol.TileUrlFunction.createFromParamsFunction =
function(baseUrl, params, paramsFunction) {
function(baseUrl, params, gutter, paramsFunction) {
var tmpExtent = ol.extent.createEmpty();
var tmpSize = [0, 0];
return (
/**
* @this {ol.source.TileImage}
@@ -107,10 +109,14 @@ ol.TileUrlFunction.createFromParamsFunction =
if (goog.isNull(tileGrid)) {
tileGrid = ol.tilegrid.getForProjection(projection);
}
var size = tileGrid.getTileSize(tileCoord.z);
var tileResolution = tileGrid.getResolution(tileCoord.z);
var tileSize = tileGrid.getTileSize(tileCoord.z);
tmpSize[0] = tileSize[0] + (2 * gutter);
tmpSize[1] = tileSize[1] + (2 * gutter);
var extent = tileGrid.getTileCoordExtent(tileCoord, tmpExtent);
ol.extent.buffer(extent, tileResolution * gutter);
return paramsFunction.call(this, baseUrl, params,
extent, size, projection);
extent, tmpSize, projection);
}
});
};