Objective c dynamically split image into irregular jigsaw shapes

Question

I am trying to split an image into multiple irregular shaped jigsawed chunks. Though I am able to split into multiple rectangular shaped pieces but not able to find any way to for irregular shapes. I have come across Jigsaw Puzzle, cutting pieces from image but none has any implementation or idea in objective c. Please give me some idea

Answer 1

If you want to extract arbitrarily shaped portions of an image, you can do it by compositing. I wrote a sample code project many years ago that demonstrates how to do so.