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Expression: Pick Whip property value to Null?
I have a solid layer which as the corner pin effect applied to it. What I am trying to figure out is a way to have each of the four corner pin value’s follow 4 individual Null objects. But it gets more complicated then just pickwhiping the corner pin properties to the positions of the nulls because… I have a sequence of Nulls parents to each other.
So there is a tracked null with keyframes on every frame. Then their is a Master Null pickwhiped to the tracked Null. The Master Null has position keyframes so that the general movements of the Null go with the video footage, but so that I can change the master position of this Null.
The thing is now I don’t have a full position property track that I can use to pickwhip the corner pins too. And as far as my testing has gone, I am unable to pickwhip a property to a layer, in this case, The corner pin position property to the movement of the Master Null layer.
Any work around to this? Does anyone know of some code that could dirive this, or a way of basically “baking” the null movement to so that it contains the final position keyframes?
Chris A
replied 17 years, 4 months ago 2 Members · 1 Reply
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1 Reply
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Try this position expression (substituting the name of your master null):
L = thisComp.layer(“Master Null”);
L.toWorld(L.anchorPoint)Dan
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