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Polygon-Box intersection test

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Hi, sorry for this question. But i searched on google in differents words, and didnt find any usefull explanation on this. Probably its me that dont know how to search :S But if you guys have a site that can describe how to perform a fast Polygon-Box intersection test. Or if you just know it and you can shoot it up thanks ;) Because the way I'm making it is not very efficient : First I test The bounding Box of the polygon with the box After I test if an edge of the box intersect the polygone (plane test + inside point test, 12 times!) If not inside, I test the edges of the polygone with the six faces of the box !!!! Soo, you see why I need better solution thanks

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