Patrick Elliott <sha### [at] hotmailcom> wrote:
> Now... A Spline Path could work though, maybe?

  And sampling along a spline (iow. splitting the spline into very small
parts and making a whole ray-scene intersection test for each small part)
is exactly what would make it prohibitively slow.
  Would it really be worth the effort?

  Radiosity requires lots of sampling, but the results can be spectacular.
Media also requires lots of sampling, but the results can also be quite
spectacular. Variable IOR would probably require even more sampling, yet
I highly doubt the end result will look any spectacular.

-- 
                                                          - Warp

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