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Animation Vendor A Forum · Hash, Inc.

#Depth Buffer

5 messages in this thread

#1814From: Michael S. FlynnNov 16, 1994 2:07 AM

Steve, I am trying to create a scene where there is a planetary landscape with 2 moons in the sky. What I want to do is have clouds in the sky with portions of the moons visible depending upon the density of the clouds. The clouds I generated in Vistapro by adjusting the cloud settings and pointing the camera at the sky. So I have a graphic of the clouds, and I have created a planetary system, but the effect I want is eluding me. I think I should be using the Depth Buffer, but as far as post processing, I don't know what to do with the generated files. Any suggestions? Michael S. Flynn

#1821From: Jim JonahNov 16, 1994 9:23 AM

Michael, PMFJI, if you have access to Premiere or any other program that supports Chroma type effects, I would render the Vistapro clouds over a pure blue background (or any other color that definately will not be in either image that you are going to composite). Render you A:M objects, then in premiere put the A:M objects on one of the main video tracks and the VideoPro objects on the overlay tracks. Call up the "transparancy" option and use chroma key. There are several variables that can be adjusted to "Key" out a range of colors, soften the edges, and blend the two together. It's a very powerful trick that saves me alot of time. I'm sure there are several other ways to do what you want and hopefully others will chime in! See ya! Jim Jonah

#1830From: Michael S. FlynnNov 16, 1994 6:16 PM

Jim, Thanks for the tip, I'll give it a try. Michael S. Flynn

#1883From: Steve/HASH, Inc.Nov 17, 1994 7:11 PM

Use our POST module when it comes out <G> Steve, Hash Inc. No seriously, have you tried using cookiecut mapping or transparency mapping for the desired effect? This will take some work but unfortunately it's the only way until POST…

#1890From: Michael S. FlynnNov 17, 1994 9:56 PM

Steve, A cookiecut won't give me soft edges, and the transparency map did just what the manual said it would – it muddied up the background. I'll try an overlay in Premeire that was suggested by Jim Jonah. I have a planet that I created that has clouds that move in different directions while the planet rotates. I'll wait for POST to create the scene I have envisioned. Michael S. Flynn