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Discard unwanted tiles from tile queue

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This commit is contained in:
Tom Payne
2013-01-18 16:36:26 +01:00
parent 111b4585a8
commit 1c524caae6
8 changed files with 63 additions and 23 deletions
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25
src/ol/renderer/layerrenderer.js
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@@ -151,3 +151,28 @@ ol.renderer.Layer.prototype.updateTileUsage =
tileUsage[sourceKey][zKey] = tileRange;
}
};
/**
* @protected
* @param {Object.<string, Object.<string, ol.TileRange>>} wantedTiles Wanted
* tile ranges.
* @param {ol.source.Source} source Source.
* @param {number} z Z.
* @param {ol.TileRange} tileRange Tile range.
*/
ol.renderer.Layer.prototype.updateWantedTiles =
function(wantedTiles, source, z, tileRange) {
var sourceKey = goog.getUid(source).toString();
var zKey = z.toString();
if (sourceKey in wantedTiles) {
if (zKey in wantedTiles[sourceKey]) {
wantedTiles[sourceKey][zKey].extend(tileRange);
} else {
wantedTiles[sourceKey][zKey] = tileRange;
}
} else {
wantedTiles[sourceKey] = {};
wantedTiles[sourceKey][zKey] = tileRange;
}
};