CompuServe Thread

#FLARE help!

7 messages in this thread
#89567From: Glenn ZimmermanMar 7, 1994 5:55 PM
Hi. I'm having some trouble with the IPAS flare generator. For some reason the Occlusion Sensing doesn't work. With it turned off I get the lens flares I expect, but when it's on, the only time I get lens flares is when the flared object starts to go behind another object. I've checked and double-checked the settings and everything is set up right. Is this a bug? What have I forgotten? My 3ds.set file is correct and the color or the flared object is correct. What else should I try? Thanks.
#89576From: Yost GroupMar 7, 1994 6:33 PM
The most common problem most people have with occlusion sensing is using ambient and specular colors in the self-illuminating material instead of just diffuse. If you're doing that, set them to black. If that's not your problem, you'll have to simplify it, zip it up with a text file explaining exactly what's going on, email it to me via CIS binary email. I'll have time to look at it on Saturday evening (my CIS private email catchup day) and will tell you exactly what's going on with it then. Hopefully it's nothing more unusual than just the old ambient/specular color issue. – G
#89952From: Glenn ZimmermanMar 8, 1994 9:10 PM
The color choice may be the problem. I know i have the ambient and diffuse set to pure white (255s all the way across). I'll try changing that & see what happens. If that doesn't help I'll send the info you requested. I know I did render a frame of the animation with no flare, slipped it into a paint program & checked the color of the object to be flared and it definitely was pure white, if that makes any difference. Thanks.
#89979From: Yost GroupMar 8, 1994 10:33 PM
There's your problem. The ambient and specular colors ought to be 0,0,0, and the diffuse color ought to be not white or black. Diffuse needs to be an explicit Hue. – G
#90165From: Glenn ZimmermanMar 9, 1994 5:27 PM
Yep, that was it! After I left a message here I experimented with different colors & it works fine! Before I experimented with different shades of gray (changed luminance on white) and got no results. Just for the heck of it I tried the color suggested in the manual (green) and it did what it's supposed to do. thanks for the help!
#90201From: Yost GroupMar 9, 1994 8:21 PM
That's what I'm here for, Glenn. Happy flaring, – G
#90447From: Glenn ZimmermanMar 10, 1994 7:27 PM
By the way, the flare effect looks great! Bravo, gentlemen!