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Set one-off transform instead of transforming back and forth

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This commit is contained in:
Andreas Hocevar
2016-10-14 13:59:26 +02:00
parent 068c9ceba4
commit fdae2e8e00
1 changed files with 6 additions and 8 deletions
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14
src/ol/render/canvas/replay.js
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@@ -116,7 +116,7 @@ ol.render.canvas.Replay = function(tolerance, maxExtent, resolution, overlaps) {
* @private * @private
* @type {ol.Transform} * @type {ol.Transform}
*/ */
this.tmpLocalTransformInv_ = ol.transform.create(); this.resetTransform_ = ol.transform.create();
}; };
ol.inherits(ol.render.canvas.Replay, ol.render.VectorContext); ol.inherits(ol.render.canvas.Replay, ol.render.VectorContext);
@@ -247,7 +247,7 @@ ol.render.canvas.Replay.prototype.replay_ = function(
var d = 0; // data index var d = 0; // data index
var dd; // end of per-instruction data var dd; // end of per-instruction data
var localTransform = this.tmpLocalTransform_; var localTransform = this.tmpLocalTransform_;
var localTransformInv = this.tmpLocalTransformInv_; var resetTransform = this.resetTransform_;
var prevX, prevY, roundX, roundY; var prevX, prevY, roundX, roundY;
var pendingFill = 0; var pendingFill = 0;
var pendingStroke = 0; var pendingStroke = 0;
@@ -342,7 +342,7 @@ ol.render.canvas.Replay.prototype.replay_ = function(
var centerY = y + anchorY; var centerY = y + anchorY;
ol.transform.compose(localTransform, ol.transform.compose(localTransform,
centerX, centerY, scale, scale, rotation, -centerX, -centerY); centerX, centerY, scale, scale, rotation, -centerX, -centerY);
context.transform.apply(context, localTransform); context.setTransform.apply(context, localTransform);
} }
var alpha = context.globalAlpha; var alpha = context.globalAlpha;
if (opacity != 1) { if (opacity != 1) {
@@ -359,8 +359,7 @@ ol.render.canvas.Replay.prototype.replay_ = function(
context.globalAlpha = alpha; context.globalAlpha = alpha;
} }
if (scale != 1 || rotation !== 0) { if (scale != 1 || rotation !== 0) {
ol.transform.invert(ol.transform.setFromArray(localTransformInv, localTransform)); context.setTransform.apply(context, resetTransform);
context.transform.apply(context, localTransformInv);
} }
} }
++i; ++i;
@@ -402,7 +401,7 @@ ol.render.canvas.Replay.prototype.replay_ = function(
y = pixelCoordinates[d + 1] + offsetY; y = pixelCoordinates[d + 1] + offsetY;
if (scale != 1 || rotation !== 0) { if (scale != 1 || rotation !== 0) {
ol.transform.compose(localTransform, x, y, scale, scale, rotation, -x, -y); ol.transform.compose(localTransform, x, y, scale, scale, rotation, -x, -y);
context.transform.apply(context, localTransform); context.setTransform.apply(context, localTransform);
} }
// Support multiple lines separated by \n // Support multiple lines separated by \n
@@ -433,8 +432,7 @@ ol.render.canvas.Replay.prototype.replay_ = function(
} }
if (scale != 1 || rotation !== 0) { if (scale != 1 || rotation !== 0) {
ol.transform.invert(ol.transform.setFromArray(localTransformInv, localTransform)); context.setTransform.apply(context, resetTransform);
context.transform.apply(context, localTransformInv);
} }
} }
++i; ++i;