<_description>
The character "Bit" from the film, "Tron".
The "yes" state is a tetrahedron; the "no" state is the second
stellation of an icosahedron; and the idle state oscillates between
a small triambic icosahedron and the compound of an icosahedron and
a dodecahedron.
https://en.wikipedia.org/wiki/List_of_Tron_characters#Bit
https://en.wikipedia.org/wiki/Uniform_polyhedra
https://en.wikipedia.org/wiki/Stellation
Written by Jamie Zawinski; 2011.