Hello! I have a 3d sketch using opengl. I want the lower half of the sketch to mirror the upper half of the sketch but I have no clue how to do this. Let me be more specific: my sketch is full of mountains and I want them to be mirrored as if there was water but I do not want water as a reflector object. I just want to duplicate and rotate the upper half. Any ideas? Thanks anyway!

Hello everyone! I have made a little terrain using opengl but the mountains on the back seem to be in from of the mountains in the fort of the scene. I am pretty sure that such a thing is called back culling (?). Any help here? Quads are being created using beginShape(QUADS);