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Freeform selection tool...

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Hey all, I am making an image manipulation program and I am trying to put a freeform selection tool in it. My current implementation works properly for convex and some non-simple selections right now, but there are some non-simple cases where it struggles. Also, the current implementation is not based on any previous work (i.e. I thought it up) and as such it is pretty rough and almost certainly not the best way of solving the problem. I have done a fair amount of searching and I haven''t found anything useful for solving the non-simple problem. If anyone knows of any resources that I can check out or if anyone has experience with this themselves, I would really appreciate the help. I would prefer an algorithm that I can implement myself, but I''m not opposed to checking out something that has already been coded. Thanks for the help. -Matthew

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