I’ll put the working solution here for future reference.

The following expressions assume that the target 3D layer is the next one, right under the 2D layer (index+1), but that could be changed of course.

Expression for position:
thisComp.layer(index+1).toComp(thisComp.layer(index+1).transform.anchorPoint)

Expression for Scale:

L =…

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Hi !

.toComp() will give me the 2D position of a 3D layer. But what if that 3D layer also has its Z position animated and I wanted to translate this to 2D position and Scale, so the resulting 2D layer appears to sit perfectly where the 3D layer is?

In other words:
If 3D position [500,400,0] = 2D position [500,400] and a scale of 100%,
a 3D… Read more