make a 3D spotlight cone matrix

Posted by Soubok on Stack Overflow See other posts from Stack Overflow or by Soubok
Published on 2010-03-29T11:15:29Z Indexed on 2010/03/29 13:03 UTC
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3d

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math

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matrix

How to create the transformation matrix (4x4) that transforms a cylinder (of height 1 and diameter 1) into a cone that represents my spotlight (position, direction and cutoff angle) ?

--edit--
In other words: how to draw the cone that represents my spotlight by drawing a cylinder through a suitable transformation matrix.

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