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Find object location / bounds
Totally new to After Effects Expressions. I’ve spent a couple days searching but haven’t seen anything that makes sense to me.
Is it possible to get the bounds/location of an objects various sides (top, bottom, left, right)?
What I’d like to do is align some dissimilar objects in a uniform way. So object b’s left edge would be 20 pixels to the right of object a’s right side. Does that make sense?
TIA.
Erick.
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1 Reply
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If you’re just talking about a layer’s boundaries, that’s pretty easy, using the layer’s position, width, height, scale, and pixel aspect ratio.
If you’re talking about visible pixels, it’s a little trickier. You need to use sampleImage() sampling an entire row or column of pixels at a time, moving from one edge inward until you encounter a non-zero alpha.
Dan
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