CompuServe Thread

#Modeling a CD?

5 messages in this thread
#76874From: Andrew McClaryJan 17, 1994 7:22 PM
Has anyone successfully animated a Compact Disc? I know it sounds simple, but I am a perfectionist and want the radial rainbow colors on the disc as it spins, not just a greyed disk spinning. I have tried making the rainbo patterns as a texture map but the colors always seem to get washed out and lack the inviting character of a real CD. Reflection maps seem even more useless on the flat face of the CD. Does anyone have any suggestions? Thanks Andrew
#76924From: Conrad StolzeJan 17, 1994 9:37 PM
Sorry, this is not an answer to you, but a question to the rest of the group. Who did the CD-ROM on the R2 Siggraph Tape? It was wonderful and I would think just what you are looking for. If you don't have the tape, check it out!!!!
#77112From: Stan Kalisher (Impulse)Jan 18, 1994 3:21 PM
I just finished a project that needed a CD. I camera captured a CD and applied it to a disk as a texture map. I created an opacity map for the appropriate areas which are semi-transparent and I applied a reflection map. The result was fabulous. It's one of the simplest objects I've ever built, but very convincing. –Rick Rodriguez
#77535From: Andrew McClaryJan 20, 1994 12:16 AM
Rick, Thanks for the solution. Here is the one that I finnally found that worked great. Create a radial rainbo pattern like the ones seen on a CD in Animator then make a flic of it rotating in the oposite direction you want the CD to spin. Then make a spotlight that projects this pattern at your rotating CD. I excluded all of the other objects in the scene except the CD in the rainbowed spotlight. The end result was amazingly convinsing. Andrew McClary
#77183From: Phillip L. MillerJan 18, 1994 7:13 PM
If the disc was modelled with a center vertex and the perimeter connected with a radiatting "sunburst" of faces a (reflective) Face Map material might just do the trick – Just a thought.