BRepFeat_SplitShape can't work

Most of the time BRepFeat_SplitShape works fine except a suface across another surface's boundary. it can't work.

Greatly appreciate any help.

jelle's picture

my bet would be is that your operation doesnt make sense topologically speaking...
the split would need to happen over the whole length of the S2

ship_compass's picture

it would split S1 . it get intersection line using S2.

ship_compass's picture

As appendix . that's work . S1 would be splitted.

ship_compass's picture

who can help me? thanks.