I am creating a system that modifies a terrain using water flow in real-time.
The terrain is created using a displacement map.
Everything works fine, but I’d like to close the sides of the map (see image) so it looks like a cutout from a real terrain.
Any idea how this can be done ? The program renders the terrain and water flow in real time, I’d like to keep the speed up.
I could set the edges of the displacement map to 0, but then the texture map is stretched along the height and that looks less than nice. A separate texture for the sides is prefered.
My first thought was to use a boxgeometry and apply the displacement map on the top, but the displacement map doesn’t affect the vertices on the sides, so that doesn’t work well.
Any help is welcome!