cam_pos      = [0.140011, 1.38549, 0.762777]';
cam_dir      = [0.898217, 0.0271471, -0.438714]';
cam_up       = [-0.431904, 0.239895, -0.869431]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.108585, -1.29066, -0.30218]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;