cam_pos      = [0.48816, 1.50619, 0.311761]';
cam_dir      = [-0.582511, 0.447225, -0.678728]';
cam_up       = [0.645679, 0.761825, -0.0521687]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.656674, 0.623277, 0.974272]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;