How to make a loft surface with a spine curve support

Cauchy Ding
Fri, 07/01/2011 - 05:16

Forums:

Hi All,

Currently, I use API BRepOffsetAPI_ThruSections to make a loft surface to approximate several section curves. However, there is no option in this API to add spine curve support. I have checked several other APIs in document, but I can't find any reference about it. Does anybody have any idea? Thanks in advance. Any suggestion is welcome.

Ding

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Roman Lygin
Fri, 07/01/2011 - 09:54

Hi Ding,

You might want to look into the GeomPlate_BuildPlateSurface and add curves as GeomPlate_CurveConstraint's. Your case is somewhat similar to ACIS' net surface, which is defined through a grid of curves, though you only seem to have a single spine curve. I've posted some excerpts from the CAD Exchanger net surface convertor here - http://opencascade.blogspot.com/2010/03/surface-modeling-part6.html.
Hope this helps.
Roman

Cauchy Ding
Sat, 07/02/2011 - 14:29

Hi Roman,

Thank you very much for your reply. I read the document of GeomPlate_BuildPlateSurface. I am afraid that's not what I need. In Solidworks, there provide a loft surface by selecting section curves and spine curve. Anyway, I will try your provided API, if any progress I will let you know. Thank you.
Best Regards.

Ding