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gradient background in Raster3D ?

Ethan A Merritt merritt at u.washington.edu
Mon Oct 19 10:23:21 EST 1998


In article <362B4D61.E7FADB67 at nwu.edu>,
Steven Weigand  <steve at xray1.pharm.nwu.edu> wrote:
>
>You can try puting a plane (two triangles) in the background with
>colored verticies.  For this you need version Raster3D V2.4f though.

One slight correction. To insure that the coordinate description of
your "background" is independent of the transformation/scaling given
in the header, you should isolate it as follows:

# Isolate following object from TMAT transformation
15
# Triangle just in front of back clipping plane
1
-0.50 -0.50 -0.99    -0.50 0.50 -0.99    0.50 -0.50 -0.99   0 0 0
# With explicitly coloured vertices
17
0.0 0.0 0.5     0.5 0.5 1.0     0.0 0.0 0.5
# Another triangle
1
-0.50 0.50 -0.99     0.50 -0.50 -0.99   0.50 0.50 -0.99     0 0 0
# With explicitly coloured vertices
17
0.5 0.5 1.0 0.0 0.0 0.5 0.5 0.5 1.0
# End of object isolation
9

				Ethan A Merritt
				merritt at u.washington.edu

(Emailed also)




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