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How to “knock out” portion of blended shapes
Hello. I’ve worked with AE for almost ten years now but I cannot figure out how to make this work:
I have three shape layers of different colors, all blended with the “add” mode to create a nice pattern (see below and read on).
These shapes’ rotation property will be animated. As you can see the center is pure white. What I would like to do is CLEANLY knock out the center portion so that I am only left with the outer shapes. I have tried duplicating this comp with a bunch of different blending modes in hopes of creating a matte source that I could use to knock out the center, but I was unable to find anything that works. I also tried using a luma key, which has yielded really ugly results, even with feathering.
Anyone have any ideas?
Thank you.
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3 Replies
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What if you precomped the entire thing, then used a key to key out the middle color.
Johnny Cuevas, Editor
Thinkck.com“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb. -
Thanks. I did try this but it wasn’t a very clean key. Tried using luma matte and Keylight. Keylight didn’t seem to do anything when I chose white as the key color…
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I used the basic Keying>Color Key and it worked fine. Are you working with gradients, I ask because you when you mix the 3 colors together in it should produce one color and that should be very easy to knock out.
Johnny Cuevas, Editor
Thinkck.com“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.
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