Creating a bulge between two layersUse an expression to synchronize the Bulge Center parameter of the Bulge effect in one layer with the position of another layer. For example, move a magnifying glass over a layer and make the contents under the magnifying glass bulge as the glass (or the underlying layer) moves. This expression uses the "from_world" element, which makes the expression work correctly regardless of whether you move the magnifying glass layer or the underlying layer. You can rotate or scale the underlying layer and the expression stays intact. You can also use other effects, such as Ripple, with this expression. To create a bulge between two layers:
from_world(this_comp.layer("Magnifier").position) |