cam_pos      = [0.490938, 1.65569, 0.317817]';
cam_dir      = [0.259794, -0.0590372, -0.963858]';
cam_up       = [0.0435066, 0.997831, -0.0493915]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-1.28303, 0.0387065, -0.348193]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;