In article <8F6C6BC70spammindspringcom@204.213.191.228>, 
SrP### [at] mindspringcom (Rich) wrote:

>   Is this an impossible dream??  I have looked at MegaPOV's trace 
> function, but it goes over my head even if I stand up while I read 
> about it.  <smile>    If it's possible and an explanation of how to 
> go about doing it were available I could take a hack at it myself.

The trace() function is not difficult to understand. It just finds the 
first intersection point of a line with an object, and optionally the 
normal.
An approximation would be quite easy to do, with the trace() function 
and the ReOrient() macro. This wouldn't be perfect, and on many 
combinations of surfaces would give slightly incorrect results(the 
objects intersecting in the area of contact), but should be adequate for 
most purposes.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/

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