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Description :
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Make the dual of a polyhedron with faces going through the reciprocation
centre. The face becomes an ideal vertex 'at infinity'. The default
display shows that the vertex can lie either side of the original face
by connecting to it in both directions. This is simulated with two
vertices and the model is not a topological dual, it is for display
purposes only. It is not
possible to place vertices at infinity, so a distance is used that
helps with display. This distance can be overriden with option -I.
The example shows the dual of an octahemioctahedron, with the
'infinity' distance set to 100000, which helps draw the ray-traced
image correctly but is not needed for display with antiview.
View this model with the command
pol_recip -I 100000 u_octahemioctahedron | antiview
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