Say, I have a mesh that looks like the streets in a city. The roads are a mesh and the rest is empty.
In the image, we see a top ortographic render. The black area is my mesh (faces) and the white is the “sky”. This mesh is plane.
What I want, is to “invert the mesh”, so that the road becomes empty and what now is empty, becomes a mesh with faces.
Like this (white is sky, black are faces):
Boolean operations with another plane won’t work, the mesh has over 5k vertices and Blender didn’t gave an “answer” (or it was going to take over 4 hours).
So, anyone know how can I do it?
(tags: invert mesh, flip mesh, invert faces, flip faces)