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Re-use ol.Extent objects

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This commit is contained in:
Tom Payne
2013-04-09 17:30:46 +02:00
parent ee8e565be2
commit fe03ebe99c
6 changed files with 20 additions and 12 deletions
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9
src/ol/renderer/canvas/canvastilelayerrenderer.js
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@@ -201,6 +201,7 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
tilesToDrawByZ, getTileIfLoaded);
var allTilesLoaded = true;
var tmpExtent = new ol.Extent(0, 0, 0, 0);
var tmpTileRange = new ol.TileRange(0, 0, 0, 0);
var childTileRange, fullyLoaded, tile, tileState, x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
@@ -217,10 +218,10 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
allTilesLoaded = false;
fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
tile.tileCoord, findLoadedTiles, null, tmpTileRange);
tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
if (!fullyLoaded) {
childTileRange = tileGrid.getTileCoordChildTileRange(
tile.tileCoord, tmpTileRange);
tile.tileCoord, tmpTileRange, tmpExtent);
if (!goog.isNull(childTileRange)) {
findLoadedTiles(z + 1, childTileRange);
}
@@ -234,7 +235,7 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
goog.array.sort(zs);
var opaque = tileSource.getOpaque();
var origin = tileGrid.getTileCoordExtent(new ol.TileCoord(
z, canvasTileRange.minX, canvasTileRange.maxY)).getTopLeft();
z, canvasTileRange.minX, canvasTileRange.maxY), tmpExtent).getTopLeft();
var currentZ, i, index, scale, tileCoordKey, tileExtent, tilesToDraw;
var ix, iy, interimTileExtent, interimTileRange, maxX, maxY;
var height, width;
@@ -265,7 +266,7 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
scale = tileGrid.getResolution(currentZ) / tileResolution;
for (tileCoordKey in tilesToDraw) {
tile = tilesToDraw[tileCoordKey];
tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord);
tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
x = (tileExtent.minX - origin[0]) / tileResolution;
y = (origin[1] - tileExtent.maxY) / tileResolution;
width = scale * tileSize.width;