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Expressions and mask
I wonder how to control mask using expression.
I tried to parent mask to shape layer and used any of simple deformations (zig zag, twist and etc),
but mask didn`t change. I think that`s because mask should add new points for these deformations.So the main subject is how to control (addremoveset the position) points in the mask ?
Thanks in advance!
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4 Replies
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Expressions don’t have access to individual mask nodes and handles. You can only link one path to another.
Scripts have access to everything, but there’s no live link so you’d have to re-run your script every time you made a change.
Dan
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So same to shape layer?
I can`t control its points?“You can only link one path to another.”
Could you post an example?
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Correct.
There’s not much to post. The expression to link Layer 2’s mask path to Layer 1’s mask path would look like this:
thisComp.layer(“Layer 1”).mask(“Mask 1”).maskPath
I generally just use the pen tool to create one point of the slave mask and then use the pickvwhip to create the expression.
Dan
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Thank you Dan!
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