[comp.graphics] Quick Ray Tracer. Bug.

Thomas.Farmer@bbs.actrix.gen.nz (11/27/90)

Dear oh dear. I hope this is the right group to post to...
I couldn't think of any other.
  
Basically, I seem to have found an undocumented 'feature'
in Quick Ray tracer....
  BTW This is QRT version 1.5
  
This feature (bug) happens when I put a perfectly
transparent object in front of another, visible object.
When the results are viewed in a mirror, the apparent
distance of the visible object from the mirror is
doubled.
  
However, when viewed directly (not reflected) the image 
looks fine.
  
Hopefully this is understandable!
 
I would like to know why this might happen (is it to
do with the ray-tracing model that QRT uses?) 
  
Even better, has anyone else found this program and 
even <gulp> fixed it? It's currently really getting
in my way on an animation I am doing...
  
Mail to Thomas.Farmer@bbs.actrix.gen.nz
     or tfarmer@cavebbs.gen.nz
   
Any help would be appreciated!
 
(My last post got sent 14 times. It wasn't a problem at my
system. I sincerely hope it doesn't happen again.)
-- 
Yes folks, here it is! The unofficial .sig for Sleeping Beagle!
mail Thomas.Farmer@bbs.actrix.gen.nz   (I think)
 
(P.S. I live in a sane society. I don't NEED a disclaimer!)