Apply mask/material by angle of an face Is there a way to apply a map, mask, or material by an angle threshold? I have done this in C4D years ago but unfortunately no reference to share.
For example, on a mountain, I want to apply snow on parts that are flatter while on steeper parts I want to apply the mountain texture.
Thanks,
Stefan
Quick test and result after I got the answer and exactly what I wanted!:
You could take the dot-product of the normal of the surface with the unit Z vector, as a measure of the angle with Z.
It's cos(the angle with Z), if you want to arccos it, for the actual angle, in radians.