I'm designing a projection map on a surface consisting of multiple irregular polygons (with 3 to 5 corners each). Each polygon is going to have its own (pref. polygon) slice for routing and geometry correction. In addition, I would like an easy way to have an edge fade for each individual polygon, so that the shape of the vignette follows whatever correction is being done in advanced output.
I will have a rough 3D of the surface available beforehand so photoshopping a tailored mask image for each polygon is not totally out of the question. There are however quite a few of them, and trying to juggle them is going to be a pain due to the heavy geometry correction and edge blending needed. As such, I would like to hear any ideas on how to achieve this somewhat automatically.