cam_pos      = [0.477554, 1.65608, 0.313686]';
cam_dir      = [0.346052, 0.0285106, -0.937782]';
cam_up       = [0.014919, 0.999245, 0.0358845]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-1.24767, 0.0351236, -0.459335]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;