I need to draw a prism for a customer (kinda like the Pink Floyd album cover). I have a 3D triangle and from that should radiate a triangular shape of rainbow of colors from a single point. I can get the rainbow gradiant, but in horizontal lines from red to purple, but not all colors originating from a single point source. If you understand what I am trying to do, can you help?
That's exactly it! Thank you so much. Huge help!