Antiprism Antiprism is a suite of programs for the generation, manipulation, and visualisation of polyhedra.
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visualisation Polyhedra polyhedra visualisation polyhedra generation polyhedra manipulation Antiprism

Antiprism Description

Antiprism is a suite of programs for the generation, manipulation, and visualisation of polyhedra. Antiprism project is a suite of programs for the generation, manipulation, and visualisation of polyhedra.Make a cubeThis can be done with unipoly, which can be used to make all the uniform polyhedra. unipoly cube > cube.offDisplay with off2pov -o cube.pov cube.off povray +a +p cube.povMake the dual octahedronpol_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.povVertices 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.povMerge the polyhedraOFF files are merged with off_merge off_util cube.off oct.off > cub_oct.offDisplay the result. off2pov -o cub_oct.pov cub_oct.off povray +a +p cub_oct.povUse coloursTo 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.offNow 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: · This release includes changes to allow building with GCC 4.3 (as used in Ubuntu 8.10).

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