<_description>
A mesh geodesic sphere of increasing and decreasing complexity.
A geodesic sphere is an icosohedron whose equilateral faces are
sub-divided into non-equilateral triangles to more closely approximate
a sphere.
The animation shows the equilateral triangles subdivided into four
coplanar equilateral triangles; and then inflated outward, causing the
sub-triangles to no longer be equilateral, but to more closely
approximate the surface of a sphere.
https://en.wikipedia.org/wiki/Geodesic_dome
https://en.wikipedia.org/wiki/Buckminster_Fuller
Written by Jamie Zawinski; 2013.