Looks cool Xetick!

@ padman
Thanks, I tried examining it's behaviour a bit but I wasn't sure if I imagined things. Beats me pretty well every time!

@ Shockwave
The shading puzzles me a bit, are these 4 plot points located in 3d space?
I hoped there was a trick to the shading but I guess I should probably be comfortable with rendering a shaded cube before attempting a twister?
Correct me if I'm wrong, I may have complicated things!
