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

Add image rotation and scaling to ol.render.canvas.Replay

Browse Source
This commit is contained in:
Tom Payne
2013-12-19 15:32:08 +01:00
parent c6b961782a
commit b3f77b4d68
1 changed files with 21 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/ol/render/canvas/canvasreplay.js
View File

@@ -109,6 +109,12 @@ ol.render.canvas.Replay = function(pixelRatio, tolerance) {
*/
this.extent_ = ol.extent.createEmpty();
/**
* @private
* @type {!goog.vec.Mat4.Number}
*/
this.tmpLocalTransform_ = goog.vec.Mat4.createNumber();
};
@@ -180,6 +186,7 @@ ol.render.canvas.Replay.prototype.replay_ =
var ii = instructions.length; // end of instructions
var d; // data index
var dd; // end of per-instruction data
var localTransform = this.tmpLocalTransform_;
while (i < ii) {
var instruction = instructions[i];
var type = /** @type {ol.render.canvas.Instruction} */ (instruction[0]);
@@ -219,7 +226,21 @@ ol.render.canvas.Replay.prototype.replay_ =
x = (x + 0.5) | 0;
y = (y + 0.5) | 0;
}
if (scale != 1 || rotation !== 0) {
ol.vec.Mat4.makeTransform2D(
localTransform, x, y, scale, scale, rotation, -x, -y);
context.setTransform(
goog.vec.Mat4.getElement(localTransform, 0, 0),
goog.vec.Mat4.getElement(localTransform, 1, 0),
goog.vec.Mat4.getElement(localTransform, 0, 1),
goog.vec.Mat4.getElement(localTransform, 1, 1),
goog.vec.Mat4.getElement(localTransform, 0, 3),
goog.vec.Mat4.getElement(localTransform, 1, 3));
}
context.drawImage(image, x, y, width, height);
if (scale != 1 || rotation !== 0) {
context.setTransform(1, 0, 0, 1, 0, 0);
}
}
++i;
} else if (type == ol.render.canvas.Instruction.END_GEOMETRY) {