I have a composition in Illustrator where I want to erase some parts of a Raster (non-vector) layer.
Basically there are drops of coloured ink floating towards the PoV, and the background image has flat (vector) circles. And I want some of the colored drops to be hidden behind circles of the background and sometimes be hidden behind the background:
Sometimes I want the yellow ink drops to be hidden by the blue circles, sometimes I want them to be visible in the blue circle and hidden behind the purple background (it's abstract).
I think the easiest would be to "erase" in circle shapes the Pixels layer like I would do in Photoshop. But to make this simple I don't want to bring Photoshop into it.
EDIT: The raster layer is a transparent PNG. The raster layer cannot be recreated in vector (it's a photo of actual liquid drops), which is why it was brought as pixels in Illustrator. The vector shapes are easy to edit (simple circles)