cam_pos      = [-0.388262, 0.795038, 1.57584]';
cam_dir      = [0.880245, 0.464294, -0.0979795]';
cam_up       = [-0.410703, 0.848869, 0.332784]';
cam_lookat   = [0, 0, 1]';
cam_sky      = [0, 1, 0]';
cam_right    = [-0.316117, 0.336079, -1.24741]';
cam_fpoint   = [0, 0, 1]';
cam_angle    = 90;