Updating image data using putImageData on a resized canvas element?

It looks like the image smoothing used by the browser when scaling up the image in drawImage() antialiased the edges of your shape, causing new intermediate color values around the edge that are not handled by your updateImage() function. Like Adam commented, you should apply your updateImage() logic against the unmodified original pixels, and then scale it.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.