[name objname] list primitives and/or objects end [transformations] [textures]As the name suggests list objects are simply collections of primitives and objects.
In the example below, a chess piece is created (see figure 5-1 above) and
the instantiated with a black surface and then with a "glass" surface. The opaque
(black) object looks reasonable, but the transparent (glass) object shows the
object is not solid (or hollow) because the cone inside the sphere is visible.
A correctly structured chess piece example can be seen in
figure 5-5.
Note that the primitives in the object have no surface applied to them.
The surface is applied when the object is used.
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THE END - Notes on Rayshade - 5 - List Objects
Figure 5-1
Figure 5-2
/*
chess.ray
chess piece (using "list")
Stephen Peter 8 mar 92
*/
eyep 100 200 150
lookp 30 0 40
background .9 .9 .9
light .5 point 0 250 150
screen 900 600
surface black
ambient .1 .1 .1
specular .3 .3 .3
reflect .5
surface glass
ambient .1 .1 .1
diffuse .1 .1 .1
transp .85
index 1.3
name chess_piece
list
disc 25 0 0 0 0 0 -1
cylinder 25 0 0 0 0 0 4
cone 25 0 0 4 22 0 0 15
disc 22 0 0 15 0 0 1
cone 19 0 0 15 3 0 0 95
disc 15 0 0 62 0 0 -1
cylinder 15 0 0 62 0 0 66
disc 15 0 0 66 0 0 1
sphere 14.75 0 0 77
end
object black chess_piece texture gloss 1
object glass chess_piece translate 60 0 0
/* base */
box
ambient .2 .1 .1
diffuse 1 .5 .45
specular .3 .3 .3
-50 -50 -10 110 50 0
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