1 pbsplinecurve bspline_3d_p_r 2 4 0 1 1 1 2 1 3 1 0 0 0 2 1 2 0 1 2 0 0 1
2 extsurf es_bspline_3d_p_r bspline_3d_p_r 0 0 1
3 trim es_bspline_3d_p_r_tr es_bspline_3d_p_r 0 1 0 1
4 trim es_bspline_3d_p_r_tr_tr es_bspline_3d_p_r_tr 0 .5 0 .5
5 mkface result es_bspline_3d_p_r_tr_tr 0 .25 0 .25
6 set MaxFTol 9.9999999999999995e-08
7 set MaxETol 9.9999999999999995e-08
8 set MaxVTol 9.9999999999999995e-08