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Index › Programming Questions & Help › Programs › Pixels inside polygon

wolle YaBB Newbies Offline Posts: 14	Pixels inside polygon Dec 20th, 2008, 3:24pm   Hi. Is there a way to get all the Pixels inside a triangle? I need this to get the average color of a region (triangle) of an image. thanks

sw01 Full Member Offline Posts: 175	Re: Pixels inside polygon Reply #1 - Dec 21st, 2008, 6:19am   Depends on how fast you want this done. Here is one way, but I'm sure there is a better solution. Use polygon's contains(): http://java.sun.com/j2se/1.5.0/docs/api/java/awt/Polygon.html

fjen God Member Offline Posts: 965	Re: Pixels inside polygon Reply #2 - Dec 21st, 2008, 9:33am   i'd go about it this way: - create a pgraphics object to fit your poly. - background white - fill black - draw poly in - loop pixels and if black you're in edit: see http://processing.org/hacks/hacks:picking_color_buffer F

sw01 Full Member Offline Posts: 175	Re: Pixels inside polygon Reply #3 - Dec 21st, 2008, 10:09am   Nice!  I think I'll use that.

wolle YaBB Newbies Offline Posts: 14	Re: Pixels inside polygon Reply #4 - Dec 22nd, 2008, 1:17am   Thank you very much!