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HTML5 canvas – how to control scaling 101

So there I was, trying to place a new canvas element exactly over a Konva stage, which worked but the scaling was all wrong compared to the Konva output – what gives ?

Konva – Point & shape collision detection

Someone asked about shape-point collision detection for the point under the mouse in a case where there are many shapes on the stage, and how to improve performance in relation to the Stage.getAllIntesections(), Stage.getIntersection() and Shape.intersects() methods. Here’s my explanation of those functions and an approach to improving hit detection. Just to be clear –Continue reading “Konva – Point & shape collision detection”