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Merge pull request #2238 from fredj/circle-hit-detection

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Circle hit detection
This commit is contained in:
Frédéric Junod
2014-06-24 13:27:02 +02:00
parent e5b9098965 2c6b22f55c
commit 1c751b9e9f
1 changed files with 5 additions and 3 deletions
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8
src/ol/render/canvas/canvasreplay.js
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@@ -258,6 +258,8 @@ ol.render.canvas.Replay.prototype.replay_ = function(
++i;
break;
case ol.render.canvas.Instruction.CIRCLE:
goog.asserts.assert(goog.isNumber(instruction[1]));
d = /** @type {number} */ (instruction[1]);
var x1 = pixelCoordinates[d];
var y1 = pixelCoordinates[d + 1];
var x2 = pixelCoordinates[d + 2];
@@ -266,7 +268,6 @@ ol.render.canvas.Replay.prototype.replay_ = function(
var dy = y2 - y1;
var r = Math.sqrt(dx * dx + dy * dy);
context.arc(x1, y1, r, 0, 2 * Math.PI, true);
d += 4;
++i;
break;
case ol.render.canvas.Instruction.CLOSE_PATH:
@@ -1263,13 +1264,13 @@ ol.render.canvas.PolygonReplay.prototype.drawCircleGeometry =
}
var flatCoordinates = circleGeometry.getFlatCoordinates();
var stride = circleGeometry.getStride();
var myBegin = this.coordinates.length;
this.appendFlatCoordinates(
flatCoordinates, 0, flatCoordinates.length, stride, false);
var beginPathInstruction = [ol.render.canvas.Instruction.BEGIN_PATH];
var circleInstruction = [ol.render.canvas.Instruction.CIRCLE];
var circleInstruction = [ol.render.canvas.Instruction.CIRCLE, myBegin];
this.instructions.push(beginPathInstruction, circleInstruction);
this.hitDetectionInstructions.push(beginPathInstruction, circleInstruction);
this.endGeometry(circleGeometry, data);
var fillInstruction = [ol.render.canvas.Instruction.FILL];
this.hitDetectionInstructions.push(fillInstruction);
if (goog.isDef(state.fillStyle)) {
@@ -1281,6 +1282,7 @@ ol.render.canvas.PolygonReplay.prototype.drawCircleGeometry =
this.instructions.push(strokeInstruction);
this.hitDetectionInstructions.push(strokeInstruction);
}
this.endGeometry(circleGeometry, data);
};