I'd like to create several meshes (e. g. mountains) out of a single height map. I'm currently using the displacement modifier. Is there a way that the displacement modifier would consider transparency or a solid color (e. g. black) and ignores these parts during the conversion? Or at least optimizes these parts during vertex creation?
Simplified example, height map:
The lower rectangular area is an example for transparency.
The generated mesh using the displacement modifier looks like this:
Everything that's transparent (or black, whatever works) should not be considered in the final model.
Is there some kind of automatism or do I have to remove the unwanted vertices manually?