When you're creating online applications you often want to mimic the tools people are used to from the desktop. The classic marching ants selection marker is a good example and even easier than before, now that the lineBitmapStyle has been added to AS3.
matrix.translate(0.5, 0);
this.graphics.clear();
this.graphics.lineStyle(1);
this.graphics.lineBitmapStyle(ants, matrix, true, false);
this.graphics.drawRect(downX, downY, extentX, extentY);
Fullpage Example Click and drag to make a marker.
Flash Source
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