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Mulligan

Intersecting and deintersecting polygons

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Theres a feature in most 3d modeling programs that allows one polygon to carve out part of another, and I want to add that ability to my own project. Because this concept is sorta hard to explain, the link below shows what I''m talking about (at the bottom under DEINTERSECTION) http://unreal.gamedesign.net/tutorials/1/wolftut1.html Anywho, I have some general ideas on how to get started, but was wondering if there were any tutorials on the subject. I''ve looked through google, but cant find squat, probably because I cant figure out what kew words to use. So if youve done something like this before and wish to tell me what you did ow how you did it, i''d appreciate it. Tanks.

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Guest Anonymous Poster
Constructive Solid Geometry

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What you call "intersection and deintersection" are parts of a larger class of geometry operations known as boolean operations. If you''re interested, do a websearch on "Constructive Solid Geometry". You''ll find plenty of useful stuff.


How appropriate. You fight like a cow.

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Also, it''s worth reading the BSP Tree FAQ in the articles & resources section, because that gives you an algorithm for coding it all up.

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