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ernpchan
11-12-2014, 06:02 PM
What render pass is this plug-in using? World space spot?

http://www.chrisvranos.com/stickeypaint.htm


Here are the basics to creating a Stickey Pass:
Map the character in a normalized color cube. No negative numbers, no values greater than 1. Make sure it's cubic, if you skew it, the paint may skew.
Render it out 32 bit, no anti-aliasing. Make sure there is no noise, dithering, post processing, etc.

In his Maya walkthrough in creating the sticky pass he's mapping a cubic ramp (gradiant) to the character.

Sensei
11-12-2014, 08:18 PM
World Spot = Camera Origin + Ray Direction * Length (from Z-Buffer especially if it's not in 0..1 range but 3d world distance)
Ray Direction can be calculated automatically from Screen X,Y coordinates (when we know Width,Height) for typical perspective camera.

spherical
11-12-2014, 08:20 PM
Where in the heck did you learn all this stuff? :D

ernpchan
11-12-2014, 08:32 PM
Not sure it's a world spot pass. I think it's just color gradient based on object bounding box. Gonna see if I can figure this out tomorrow.