MDenham <nomail@nomail> wrote:
> Rather, if there was an easy way of performing _arbitrary_ non-linear
> transformations on arbitrary surfaces.  (Throwing in simple polynomial
> transforms should be reasonably feasible, however; I'll see if I can hash
> something up to try it out here sometime in the next few weeks.)

  No, it's just not possible to perform *any* non-linear transformations
to arbitrary surfaces. Not in any efficient and accurate way.

  The reason is that non-linear transformations (ie. those which cannot
be expressed with a 4x4 transformation matrix) would require curved rays
to raytrace, and that's just not feasible.

-- 
                                                          - Warp

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