Firefox throwing a exception with HTML Canvas putImageData

Question

So I was working on this little javascript experiment and I needed a widget to track the FPS of it. I ported a widget I\'ve been using with Actionscript 3 to Javascript and

Answer 1

Yeah, this error seems to happen when using (get|put)ImageData off the edges of the canvas.

For my encounter with this problem, I simply added some clipping logic that checks the edges of the region to be drawn against the edges of the canvas, and clips it where necessary, only drawing the visible region. It seems to have fixed the problem.