[Fluxus] commits: icosphere

[gabor papp]

hi,

i added a new primitive called icosphere, which is a sphere subdivided 
recursively from an icosahedron. sometimes it gives nicer results than 
the old sphere.

solid:
http://www.flickr.com/photos/gaborpapp/4423601224/

texture mapped:
http://www.flickr.com/photos/gaborpapp/4428292865/

(build-icosphere) has one argument, the level of subdivisons. 1 gives 
you the icosahedron. higher iteration levels (e.g. above 6) will 
generate a lot of triangles and it becomes quite slow.

best,
gabor