ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Only draw batches in visible extent

Browse Source
This commit is contained in:
Tom Payne
2013-11-08 23:33:57 +01:00
parent ba1a35b59b
commit 61e221c504
2 changed files with 7 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/ol/renderer/canvas/canvasvectorlayerrenderer.js
View File

@@ -87,7 +87,7 @@ ol.renderer.canvas.VectorLayer.prototype.composeFrame =
0);
context.globalAlpha = layerState.opacity;
batchGroup.draw(context, transform);
batchGroup.draw(context, frameState.extent, transform);
};

8
src/ol/replay/canvas/canvasreplay.js
View File

@@ -411,9 +411,11 @@ ol.replay.canvas.BatchGroup = function() {
/**
* @param {CanvasRenderingContext2D} context Context.
* @param {ol.Extent} extent Extent.
* @param {goog.vec.Mat4.AnyType} transform Transform.
*/
ol.replay.canvas.BatchGroup.prototype.draw = function(context, transform) {
ol.replay.canvas.BatchGroup.prototype.draw =
function(context, extent, transform) {
/** @type {Array.<number>} */
var zs = goog.array.map(goog.object.getKeys(this.batchesByZIndex_), Number);
goog.array.sort(zs);
@@ -423,7 +425,9 @@ ol.replay.canvas.BatchGroup.prototype.draw = function(context, transform) {
var batchType;
for (batchType in batches) {
var batch = batches[batchType];
batch.draw(context, transform);
if (ol.extent.intersects(extent, batch.getExtent())) {
batch.draw(context, transform);
}
}
}
};