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Merge pull request #3186 from fredj/clip-pixel-ratio

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Take the pixel ratio into account when clipping the layer
This commit is contained in:
Frédéric Junod
2015-01-28 21:29:48 +01:00
parent 5c9e099628 cb69cecf03
commit 3abcbcf377
1 changed files with 5 additions and 4 deletions
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9
src/ol/renderer/canvas/canvaslayerrenderer.js
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@@ -52,6 +52,7 @@ ol.renderer.canvas.Layer.prototype.composeFrame =
var clipped = goog.isDef(extent);
if (clipped) {
goog.asserts.assert(goog.isDef(extent));
var pixelRatio = frameState.pixelRatio;
var topLeft = ol.extent.getTopLeft(extent);
var topRight = ol.extent.getTopRight(extent);
var bottomRight = ol.extent.getBottomRight(extent);
@@ -68,10 +69,10 @@ ol.renderer.canvas.Layer.prototype.composeFrame =
context.save();
context.beginPath();
context.moveTo(topLeft[0], topLeft[1]);
context.lineTo(topRight[0], topRight[1]);
context.lineTo(bottomRight[0], bottomRight[1]);
context.lineTo(bottomLeft[0], bottomLeft[1]);
context.moveTo(topLeft[0] * pixelRatio, topLeft[1] * pixelRatio);
context.lineTo(topRight[0] * pixelRatio, topRight[1] * pixelRatio);
context.lineTo(bottomRight[0] * pixelRatio, bottomRight[1] * pixelRatio);
context.lineTo(bottomLeft[0] * pixelRatio, bottomLeft[1] * pixelRatio);
context.clip();
}