/usr/share/doc/raster3d/examples/example1.r3d is in raster3d-doc 3.0-3-2.
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The actual contents of the file can be viewed below.
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# Draw a bunch of spheres, each with it's own material specification
#
# First row
######################################
@red.r3d
2
-1.0 0.75 0.0 0.18 1.0 1.0 1.0
@orange.r3d
2
-0.6 0.75 0.0 0.18 1.0 1.0 1.0
@yellow.r3d
2
-0.2 0.75 0.0 0.18 1.0 1.0 1.0
@green.r3d
2
0.2 0.75 0.0 0.18 1.0 1.0 1.0
@blue.r3d
2
0.6 0.75 0.0 0.18 1.0 1.0 1.0
@cyan.r3d
2
1.0 0.75 0.0 0.18 1.0 1.0 1.0
#
# Second row
######################################
@purple.r3d
2
-1.0 0.25 0.0 0.18 1.0 1.0 1.0
@lilac.r3d
2
-0.6 0.25 0.0 0.18 1.0 1.0 1.0
@darkgrey.r3d
2
-0.2 0.25 0.0 0.18 1.0 1.0 1.0
@grey.r3d
2
0.2 0.25 0.0 0.18 1.0 1.0 1.0
@white.r3d
2
0.6 0.25 0.0 0.18 1.0 1.0 1.0
#
# Fancy row
######################################
@pearl.r3d
2
-1.0 -0.25 0.0 0.18 1.0 1.0 1.0
@bronze.r3d
2
-0.6 -0.25 0.0 0.18 1.0 1.0 1.0
@gold.r3d
2
-0.2 -0.25 0.0 0.18 1.0 1.0 1.0
@silver.r3d
2
0.2 -0.25 0.0 0.18 1.0 1.0 1.0
#
# Blue on the outside, golden lining
#
8
3. 0.4 1.0 1.0 0.0 0.0 0 1 0 3
SOLID 0.0 0.0 1.0
BACKFACE 0.7 0.3 0.1 0 0
FRONTCLIP 0.13
2
0.6 -0.25 0.0 0.18 1.0 1.0 1.0
#
# Catseye marble
# (the swirl is a bounded hyperbolic paraboloid, a quadric surface)
#
@2-sided.r3d
14
1.0 -0.25 0.0 0.18 1.0 1.0 1.0
-0.0089 -0.0272 0.0626 -0.0234 -0.0165 -0.0400 0.0047 -0.0086 0.0013 0.0000
@transparent0.r3d
2
1.0 -0.25 0.0 0.18 1.0 1.0 1.0
#
# Fourth row
######################################
#
# Matte colours (no highlights)
#
@matte.r3d
2
-0.6 -0.75 0.0 0.18 1.0 0.5 0.7
2
-0.2 -0.75 0.0 0.18 0.4 0.2 0.9
2
0.2 -0.75 0.0 0.18 0.9 0.9 0.2
2
0.6 -0.75 0.0 0.18 0.0 0.45 0.05
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