CompuServe Thread

#Realistic CD

10 messages in this thread
#189259From: Robert LundSep 5, 1995 5:29 PM
Hi, I'm trying to make a compact disc in 3DS, but I'm having some trouble with the multicolored reflections CD's make. Does anyone have any ideas on how to do this. I've thought about using a reflection map, but the tricky thing is that the reflections have to move around the disc. I'd appreciate any help I can get! Thanks! /Robert
#189267From: John WilliamsSep 5, 1995 6:40 PM
Hi Robert… How about rendering your reflection map to a TGA or gif or whatever then using a spotlight projection? You can then animate it to your hearts content. While I'm on the subject I recently projected a Flic onto a cube which was rotating around two axes (one linked to a dummy) with the spot light also linked to the dummy to maintain the alignemnt with the cube. The problem I had was the spotlight occasionally "forgot" which way was up and projected upside down (I have modeled text on the same side so I know it did this) for about a frame or two. Anyone know if this is fixable given the difficulty of rotating things around two or more axes? -john- DAS.
#189270From: Sep 5, 1995 6:46 PM
Robert: >> I'm trying to make a compact disc in 3DS, What you want is the free IPAS routine called RAINBO_I. It was created by a company in Hong Kong (Pointer?) specifically for this purpose. I found it on the Internet on Avalon about a year ago, look in the libraries here, or holler if you can't find it and I'll e-mail it to you. Greg Pyros
#189367From: Robert LundSep 6, 1995 10:35 AM
Thanks a lot! Seem's to be just what I need. I'll download it from Avalon right away!
#189384From: Mike KelleySep 6, 1995 11:57 AM
Hey, Greg, I'll bet Anne would let you upload that IPAS to the libraries here (there's always room for a free IPAS, isn't there Anne?) I, for one, would love to have it.
#189477From: Larry MintonSep 6, 1995 9:40 PM
But it's already out there! See rainbo.zip in lib 1. LAM
#189698From: Anne BrownSep 7, 1995 10:24 PM
Mike – We can always find room (mostly by bumping something old no one has looked at for a while <G>) for a free IPAS routine. I see Larry Minton already pointed you to the Rainbo.Zip you were looking for though. Anne
#189808From: Mike KelleySep 8, 1995 12:35 PM
Yep, thanks got it. Ya know, you just need to get CIS to give you more space <g>!
#190029From: steveSep 9, 1995 4:29 PM
Robert, I have just finished a sequence using a CDROM in it. What I did was use an actual master cdrom, you the gold ones and scanned the cdrom. he resulting tiff file was exquisite- a perfect texture map. I then mapped this to a cdrom object using bitmap fit. The result was good. The cdrom is spinnig from a distance and arriving center stage in the foreground and looks very convinving. If you need reflections I would suggest adding a reflection map. I also trried the rainbow ipas but did not get the look I was after. r since a real cdrom has a bending diffraction pattern which is difficult to model. Hope this helps. The key is scanning the cdrom with a good 24bit scanner. I used an HP IICX. Good Luck. Steve Schram.
#191668From: Robert LundSep 19, 1995 4:51 PM
Thanks for the tip! I never got the rainbow ipas to work the way I wanted either, but using an actual CD scan probably will. /Robert