cam_pos      = [-0.118639, 0.908442, -0.343732]';
cam_dir      = [0.992016, 0.0394521, -0.119786]';
cam_up       = [0.122567, -0.0778606, 0.989401]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.0395108, 1.32492, 0.109159]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;