cam_pos      = [0.194661, 1.77654, 0.756654]';
cam_dir      = [-0.339705, -0.146111, 0.929114]';
cam_up       = [-0.545758, 0.835163, -0.0682053]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [1.01877, 0.705221, 0.483388]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;