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On 11 May 2001 11:08:12 -0400, Warp wrote:
>Ron Parker <ron### [at] povray org> wrote:
>: First you need to calculate the inverse of
>
> Also note that not all matrices can be inverted (it's an analog case to
>real numbers, where 0 has no inverse).
True, but if those really are basis vectors, the inverse should exist.
--
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbf 1}hollow interior{media{emission 3-T}}}#end
Z(-x-x.2x)camera{location z*-10rotate x*90normal{bumps.02scale.05}}
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