Realistic bike reflector

[walkinginspace]

Anyone have a clue on how to do a realistic acting bike reflector in 3d? I've got one and studied it a bit and it seems that it's made up of tiny little cuts in the plastice that when light hit it refractor in a certain way....but I'm not sure. Any help on this would be great.

Steve Hubbard

[dobermunk]

Haven't had to do this myself.

Might want to try a camera incident gradient cut up by an image alpha.