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Use the temporary extent in VectorTileLayer

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Reduce garbage generation
This commit is contained in:
Frederic Junod
2018-02-05 14:37:36 +01:00
parent 348afc4e44
commit 59c0297f3f
1 changed files with 4 additions and 4 deletions
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8
src/ol/renderer/canvas/VectorTileLayer.js
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@@ -182,7 +182,7 @@ CanvasVectorTileLayerRenderer.prototype.createReplayGroup_ = function(
const sourceTileExtent = sourceTileGrid.getTileCoordExtent(sourceTileCoord);
const sharedExtent = getIntersection(tileExtent, sourceTileExtent);
const bufferedExtent = equals(sourceTileExtent, sharedExtent) ? null :
buffer(sharedExtent, layer.getRenderBuffer() * resolution);
buffer(sharedExtent, layer.getRenderBuffer() * resolution, this.tmpExtent);
const tileProjection = sourceTile.getProjection();
let reproject = false;
if (!equivalentProjection(projection, tileProjection)) {
@@ -396,8 +396,8 @@ CanvasVectorTileLayerRenderer.prototype.postCompose = function(context, frameSta
continue;
}
const tileCoord = tile.tileCoord;
const worldOffset = tileGrid.getTileCoordExtent(tileCoord)[0] -
tileGrid.getTileCoordExtent(tile.wrappedTileCoord)[0];
const worldOffset = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent)[0] -
tileGrid.getTileCoordExtent(tile.wrappedTileCoord, this.tmpExtent)[0];
let transform = undefined;
for (let t = 0, tt = tile.tileKeys.length; t < tt; ++t) {
const sourceTile = tile.getTile(tile.tileKeys[t]);
@@ -503,7 +503,7 @@ CanvasVectorTileLayerRenderer.prototype.renderTileImage_ = function(
const size = source.getTilePixelSize(z, pixelRatio, frameState.viewState.projection);
context.canvas.width = size[0];
context.canvas.height = size[1];
const tileExtent = tileGrid.getTileCoordExtent(tileCoord);
const tileExtent = tileGrid.getTileCoordExtent(tileCoord, this.tmpExtent);
for (let i = 0, ii = tile.tileKeys.length; i < ii; ++i) {
const sourceTile = tile.getTile(tile.tileKeys[i]);
if (sourceTile.getState() == TileState.ERROR) {