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You animate your circles and create your mattes (intersections) by animating MULTIPLE circular mask shapes within a SINGLE layer, with each mask's Mode set to Intersect. This easily solves your intersection matte issue. Once you have the mattes, you'll need to isolate each circle by setting all but one unwanted mask shapes mode to None. Repeat and rinse until you've isolated all the circles. Then change each Solid's color to taste.
You then have the lesser issue of thinking how you actually want to animate the circles, apply the necessary Blending Modes and the track mattes (or Set Matte). I could solve this part too but I didn't want to spoil your fun. ;-)
HTH
Roland Kahlenberg (RoRK)
----- Original Message -----
On 07/09/2012, at 4:28 AM, Teddy Gage wrote:
How would I go about creating a "conditional" blending layer? What I
mean is it possible to have say five circles called A,B,C,D,E randomly
floating in space and overlapping, such that unless A is over B, A has
"normal" blending mode, but when A overlaps B, it has an "add" blending
mode? And then when A overlaps C it has multiply blending mode instead,
just as an example? This is a puzzle...
-- Animator & Editor
www.teddygage.com Brooklyn
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