cam_pos      = [0.510471, 1.58228, 1.20791]';
cam_dir      = [-0.175781, -0.102552, -0.979073]';
cam_up       = [-0.522591, 0.852572, 0.00452341]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-1.10957, -0.681558, 0.2706]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;