Hello,
	I am doing numerical simulations on granular materials in rotating
drums. The particles are approximated by spheres and I investigate
especially the segregation (un-mixing) dynamics when particles of
differnt sizes are used.
	In order to present and visualize my scientific research, I use POVRAY
to create PPM-images which are converted to MPG- and AVI-videos using
mpeg_encode or mkavi, respectivly. In experiments, a plexiglas cylinder
is used to allow for visual inspection and I would like to use the same
in the POVRAY scene file. Unfortunately, the picture does not come out
as expected. The "Glass" and "Glass3" textures for the cylinder are far
too dark and "Glass2" seems to be better. Nevertheless, in all three
cases, far too many reflections are visible which lead to a
unpresentable and ununderstandable image.
	I included my scene-file as attachement and would like to know if
somebody can point out to me what I did wrong.
	Regards,
Gerald
-- 
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  Dr. Gerald H. Ristow
  Division of Engineering
  Colorado School of Mines
  Golden, CO 80401-1887, U.S.A.
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Attachments:
Download 'drum_3d.pov.gz' (34 KB)