Archived discussion

Multi-secions surface in OCC

Other usage issuesMon, 02/03/2014 - 21:588 replies

QuestionAuthorMon, 02/03/2014 - 21:58

Hello guys!

I want to build a surface through a couple of guide curves (green ones in picture) and section curves (red ones in picture). For those who are fimiliar with CATIA, there it is called Multi-sections surface. I looked through the BRepOffsetAPI package, but didn't find a class which satisfies my needs. For example BRepOffsetAPI_ThruSections takes a couple of sections, but no guide curves. BRepOffsetAPI_MakePipeShell takes a couple of profile curves, but only ONE spine.

Is there a way to do that in OCC? Thanks in advance!

Regards,
Alex

Discussion

8 archived replies

Posts are displayed in their archived order.

01Commenter-1Mon, 02/10/2014 - 20:07

Check out this link
http://www.opencascade.org/org/forum/thread_24293/?file_id=24448&forum=3

02AuthorMon, 02/10/2014 - 21:59

Hello Sharjith,

thank you for your response. Actually I need two sections and TWO guide curves (spines) between these sections. BRepOffsetAPI_MakePipeShell supports multiple sections but only one spine.

Regards,
Alex

03Commenter-1Tue, 02/11/2014 - 13:14

From the documentation, I guess you could set a second spine as an auxiliary spine...

void BRepOffsetAPI_MakePipeShell::SetMode(sonst TopoDS_Wire& AuxiliarySpine,
const Standard_Boolean CurvilinearEquivalence,
const BRepFill_TypeOfContact KeepContact = BRepFill_NoContact)

I haven't tried it though.

04AuthorTue, 02/11/2014 - 17:58

Thank you very much. I will try this one.

05Commenter-2Tue, 03/11/2014 - 17:36

Hello Author

Did u try it out ?
How are the results ?
regards

06AuthorTue, 03/11/2014 - 20:01

Hello PG!

Actually it worked! I was able to build the surface from my attached image with BRepOffsetAPI_MakePipeShell. By using the SetMode function you can add a second spine as Sharjith pointed out.

Regards,
Alex

07Commenter-3Fri, 03/17/2017 - 16:36

Hello Author,

I have a similar problem about multi section surfaces,my sections are more than two and there are three spines, is there a good function to generate a surface?

08Commenter-4Sun, 06/30/2024 - 15:22

as for my latest discovery, opencascade do not possess such functionality. th eclosest to it was mentioned earlier BRepOffsetAPI_Pipeshell. However the meaninig of spine is different form the meaning of guide in opencascade. I tried it with multiple wire sections and an auxiliary spine but tthe result wasn't satisfying. especially if the seaction have a huge differnce in the dimensions.