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Reuse arrays for rendered tiles and extent

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This commit is contained in:
Andreas Hocevar
2016-09-16 14:58:39 +02:00
parent 49e2e55063
commit b0a654534c
1 changed files with 5 additions and 5 deletions
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10
src/ol/renderer/canvas/tilelayer.js
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@@ -31,9 +31,9 @@ ol.renderer.canvas.TileLayer = function(tileLayer) {
/**
* @protected
* @type {Array.<ol.Tile|undefined>}
* @type {!Array.<ol.Tile|undefined>}
*/
this.renderedTiles = null;
this.renderedTiles = [];
/**
* @protected
@@ -122,7 +122,7 @@ ol.renderer.canvas.TileLayer.prototype.prepareFrame = function(
var useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
var tmpExtent = ol.extent.createEmpty();
var tmpExtent = this.tmpExtent;
var tmpTileRange = new ol.TileRange(0, 0, 0, 0);
var childTileRange, fullyLoaded, tile, x, y;
var drawableTile = (
@@ -162,7 +162,8 @@ ol.renderer.canvas.TileLayer.prototype.prepareFrame = function(
/** @type {Array.<number>} */
var zs = Object.keys(tilesToDrawByZ).map(Number);
zs.sort(ol.array.numberSafeCompareFunction);
var renderables = [];
var renderables = this.renderedTiles;
renderables.length = 0;
var i, ii, currentZ, tileCoordKey, tilesToDraw;
for (i = 0, ii = zs.length; i < ii; ++i) {
currentZ = zs[i];
@@ -174,7 +175,6 @@ ol.renderer.canvas.TileLayer.prototype.prepareFrame = function(
}
}
}
this.renderedTiles = renderables;
this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio,