[BUG] Camera Pos is not fetched correctly

[Mohamedgalil]

In mj_point_clouds#line 163, you fetch the camera pos from the camera body_pos. However, you ignore the original camera pos self.sim.model.cam_pos[cam_i]. I suggest you fetch the camera pos by adding the cam_pos to the camera body_pos as:

cam_body_id = self.sim.model.cam_bodyid[cam_i]
cam_pos = self.sim.model.cam_pos[cam_i] + self.sim.model.body_pos[cam_body_id]

Regardless, thank you for the code, very helpful :)