Message #1974

From: Roice Nelson <roice3@gmail.com>
Subject: more spherical goodies
Date: Mon, 19 Dec 2011 21:14:46 -0600

I added the Rubik’s
Cube<http://groups.yahoo.com/group/4D_Cubing/photos/album/1694853720/pic/1499556505/view?picmode=original&mode=tn&order=ordinal&start=1&dir=asc>,
a VT Octahedron<http://groups.yahoo.com/group/4D_Cubing/photos/album/1694853720/pic/1199211212/view?picmode=original&mode=tn&order=ordinal&start=1&dir=asc>,
and a shallow cut FT
Icosahedron<http://groups.yahoo.com/group/4D_Cubing/photos/album/1694853720/pic/811629909/view?picmode=original&mode=tn&order=ordinal&start=1&dir=asc>(links
are to screenshots). I also have filled drawing working, thanks to
a great OpenGL technique<http://zrusin.blogspot.com/2006/07/hardware-accelerated-polygon-rendering.html>I
found which drastically simplifies rendering concave polygons. The
approach requires no special mesh generation, which I incorrectly had
expected would be necessary.

Panning around with the filled drawing is a lot of fun - the ability to
orient puzzles arbitrarily is a big experience jump in the spherical world
just like it was for hyperbolic tilings. I find it especially neat when a
new sticker gets projected out to infinity and the background color
changes.

I also want to say congrats Eduard on your 24-cell solve. That is awesome
and inspiring! It’s really cool to see a third solve, and it gives me hope
to maybe solve it someday myself :)

Cheers,
Roice