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- # a twisted cylinder visible from the outside, 1000x1000
- # will show backface problems.
- octwist 16 10
-
- # vertices:
- # X Y Z
- # front face
- -190 -460 -500 # vertex 0
- 190 -460 -500 # vertex 1
- 460 -190 -500 # vertex 2
- 460 190 -500 # vertex 3
- 190 460 -500 # vertex 4
- -190 460 -500 # vertex 5
- -460 190 -500 # vertex 6
- -460 -190 -500 # vertex 7
-
- # back face
- -190 -460 500 # vertex 8
- 190 -460 500 # vertex 9
- 460 -190 500 # vertex 10
- 460 190 500 # vertex 11
- 190 460 500 # vertex 12
- -190 460 500 # vertex 13
- -460 190 500 # vertex 14
- -460 -190 500 # vertex 15
-
- # polygons: all cosine-lit, assorted colors
- # color #verts vert1 vert2 ...
-
- # these faces are derived from a shifted octagon
- 0x11ff 8 0 1 2 3 4 5 6 7 # front face: counterclockwise
- 0x12ff 8 15 14 13 12 11 10 9 8 # back face: clockwise
-
- # these faces are facing us in the sketch, thus are CCW
- 0x13ff 4 5 4 11 12 # top
- 0x14ff 4 4 3 10 11
- 0x15ff 4 3 2 9 10 # right side
- 0x16ff 4 2 1 8 9
-
- # these faces are away from us in the sketch, and thus CW
- 0x17ff 4 15 8 1 0 # bottom
- 0x18ff 4 14 15 0 7
- 0x19ff 4 13 14 7 6 # left side
- 0x1aff 4 12 13 6 5
-
-