CompuServe Messages

#Moving Clouds

    18-Jun-93 21:01:11
Sb: #46727-#Moving Clouds
Fm: Don Landis 71673,3612
To: John Ellis 72440,3046
OK! It worked very well in still rendering. Here's what I've done to get the effect: I created an oversize box(larger than viewing area). Apply the Smoke IPAS as follows: Size: any number 1000 to 2000 works well Iterations: 2 or 3 Exponent: 1.5 Speed: 0.3 Color1: 10R188G233B Cyan background or sky blue Color2: L235, H&S 0 White puffy cloud color The still rendering looks as good as any of the clouds I captured on 35mm slides. Next I'll try the animation for exponent and speed settings to get a realistic cloud movement. The atmosphere settings didn't do anything for me but could be added for your own effect. Fog would be better if I could control its concentration at ground level but what does fog have to do with getting the realistic cloud look anyway? The horizon line didn't seem to be a problem as I once thought. To create a concentration of clouds at the horizon try to angle the skybox object and the ground box object as a very long < with the camera viewed into its opening Then fog might have some ground concentration too. I'm getting ideas as I type this response. Not too often does something like this fall into place so easily. Got to go now and try some of these thoughts. In the meantime I think you'd be safe in placing your order for the IPAS routine #2 for this project.