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iOS Doing a (simple?) 2D Image Background effect

Soulstorm

Soulstorm

macrumors 68000
Original poster
I am trying to make an application as proof of concept. I have an image, with which I want to fill the screen. When the user clicks somewhere, I want the image to be distorted in that spot, like if it was on a net of some short (that spot of the image going forwards and backwards).

Does anyone have any idea on how to make this possible?
 
For simple animations, CGAffineTransform and a bit of matrix algebra should do the trick. Depending on the sort of thing you're going for, OpenGL ES might be a better option though.
 
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