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Color Dodge Alternatives?

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Riley FarrellColor Dodge Alternatives?
by on Feb 22, 2011 at 8:01:51 pm

AE CS5 - I have two solid color vector objects, imported from illustrator. They come together to partially overlap (venn diagram). I want the overlap to be negative space, or white. Color Dodge is the concept I need, but After Effects handles that blending mode differently than Illustrator. Any suggestions?


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Riley FarrellRe: Color Dodge Alternatives?
by on Feb 22, 2011 at 8:26:38 pm

Basically, is there any blending mode that completely knocks out the intersection between two shapes? Or one that makes the intersection pure white?


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Cory PetkovsekRe: Color Dodge Alternatives?
by on Feb 22, 2011 at 9:07:21 pm

That would not be "blending". That would be adding or subtracting masks. Import the illustrator file as masks. Set one to add, the other to subtract. You may also need to import them both as layers and masks. This probably isn't the only way to do it either.

Cory

--
Cory Petkovsek
Corporate Video


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Darby EdelenRe: Color Dodge Alternatives?
by on Feb 22, 2011 at 11:32:37 pm

There are also 'add' and 'subtract' blend modes. But these work with the colors present in the image instead of full on ('white') or off ('black') as in masks.

Basically, blend modes may or may not give you the result you want depending on the color of the circles in your venn diagram. You may have to adjust colors selectively to create the result you want, or you can rely on masks or shape layers based on the AI paths as suggested by Cory.

Darby Edelen


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Dave LaRondeRe: Color Dodge Alternatives?
by on Feb 22, 2011 at 9:15:26 pm

[Riley Farrell] "....is there any blending mode that completely knocks out the intersection between two shapes?"

Nope, that would be the function of Track Mattes:

http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c11...

Duplicate your existing two layers once they're animated. Move them to the top of the timeline. Turn of the bottom two layers temporarily. Go to layer #2, and have it use layer #1 as an Alpha or Alpha Inverted Matte. When the upper two layers animate, one of those track matte settings will reveal the intersection ONLY... which you can colorize as you wish.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Chip BurnsRe: Color Dodge Alternatives?
by on Jun 6, 2012 at 5:20:40 am

This is brilliant. Thanks Dave!


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