Antiprism 0.10 reviewDownload
Antiprism project is a suite of programs for the generation, manipulation, and visualisation of polyhedra. Make a cube This can
Antiprism project is a suite of programs for the generation, manipulation, and visualisation of polyhedra.
Make a cube
This can be done with unipoly, which can be used to make all the uniform polyhedra.
unipoly cube > cube.off
off2pov -o cube.pov cube.off
povray +a +p cube.pov
Make the dual octahedron
pol_recip is used for making duals by polar reciprocation.
To make a nice compound the radius of the sphere used for reciprocation needs to be the distance from the cube centre to the mid-point of an edge, and the sphere centre must be the centre of the cube.
unipoly has centred the cube on (0, 0, 0), which is the default centre for pol_recip. The radius can be specified using the -R option and passing two adjacent vertex index numbers of the cube. Use off2pov with the -n option to display the cube with its vertex numbers.
off2pov -x vf -n -o cube.pov cube.off
povray +a +p cube.pov
Vertices 3 and 5 are adjacent, so make the dual octahedron like this, and display it.
pol_recip -R 3,5 cube.off > oct.off
off2pov -o oct.pov oct.off
povray +a +p oct.pov
Merge the polyhedra
OFF files are merged with off_merge
off_util cube.off oct.off > cub_oct.off
Display the result.
off2pov -o cub_oct.pov cub_oct.off
povray +a +p cub_oct.pov
To make it clearer that this is a compound of a cube and octahedron the two polyhedra could be given different colours using off_color.
Colour the cube faces red, and the octahedron faces green.
off_color -f 1,0,0 cube.off > red_cube.off
off_color -f 0,1,0 oct.off > green_oct.off
Now merge and display as before, this time making the edge and vertex elements smaller than the defaults
off_util red_cube.off green_oct.off > color_cub_oct.off
off2pov -v 0.02 -e 0.016 -o color_cub_oct.pov color_cub_oct.off
povray +a +p color_cub_oct.pov
What's New in This Release:
Antiview is a new GLUT-based 3D viewer.
Kcycle is a new program to generate kaleidocycles.
Significant bugs have been fixed in many programs.
Portability has been improved.
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