.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 position of [500,400,-300] would give me a scale of 130% (example)
What would be the expression for the scale? (relative to the active Camera I would assume)