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Ellipsoid - Plane Collision

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Hi everyone, in my engine i''m using Sphere - Plane collision detection to test if my camera is hitting a wall. It works great the problem is the sphere being equal in all dimensions, the taller I make the cameras sphere, the further away I''m hitting the wall. I''ve heard that if I use an ellipsoid instead I can scale the vertices somehow using the camera radii, and test for collisions using a unit sphere. How do I do this? Thanks in advance. Lukerd. "To err is human, to really mess up requires a computer"

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There are 2 great tutorials on elipsoid CD:
-Collision detection & Response by Telemachos
-Generic Collision Detection For Games Using Ellipsoids by Paul Nettle (http://www.fluidstudios.com/publications.html)

You should never let your fears become the boundaries of your dreams.

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