I'm looking for a way to reveal my entire layer when a portion of my mask covers the layer. I have a composition with multiple individual layers, that I want to reveal with a set matte. However lets say when 30 percent of the layer is covered I would like the entire layer to appear. When it's less than 30 percent the layer does not need to appear.
Another option may be a correlation between opacity and area covered. Like 20 percent covered 20 percent opacity, 60 percent covered 60 percent opacity, etc