mask and erase seem to be the same things but inverse of eachother. it would be helpful if I could mask the whole layer, and then use a small sprite to cut a whole and see a little circle cutout of the layer. or the reverse for erase
as of now if you want to do this you need to make a mask that takes up the whole view, with your actual mask shape in the middle. and if you want to be able to move it, the mask has to take up more than the view.
there should be a checkbox on the layer or on the mask effect, that allows you to start with the whole thing masked and then your mask sprite could cut a whole in that.
an example of the problem I'm trying to solve is in the cap below.
the idea is to only see the circle of pink stuff revealed, but if you move the mouse around you can easily ruin the effect.
on a side note, it'd be cool if you could toggle the behavior of overlapping masks to go more transparent or less so. as of now if I put two masks over eachother, it goes by whichever is more transparent. it'd be convenient to be able to trigger the opposite behavior, or an average. it's also not possible to combine erase and mask to fix either problem.