How to convert the Open Brep to a Surface?

Hi all,

When I loft 6 curves to create a surface, it creates an 'Open Brep' rather than a Surface.

How to convert the Open Brep to a Surface?

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Permalink Reply by David Rutten on November 22, 2010 at 1:55pm

Hi Chun,

this might not be possible. What does the open brep look like?

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David Rutten
david@mcneel.com
Seattle, WA

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Permalink Reply by Chun Qing Li on November 23, 2010 at 5:43am

Hi david,

Please find the attached image for your information.

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Permalink Reply by David Rutten on November 23, 2010 at 10:52am

Sorry, I meant the actual Brep geometry. If you bake the arcs and Loft in Rhino, does it also create a polysurface?

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David Rutten
david@mcneel.com
Seattle, WA

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Permalink Reply by Chun Qing Li on November 23, 2010 at 2:59pm

Yes it does.

Or bake the loft surface to Rhino, and reference it back to Grasshopper (but this is not convenient).

Any other solutions?

Many thanks...

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Permalink Reply by David Rutten on November 23, 2010 at 5:19pm

Well, if the Rhino Loft command creates a polysurface then there's very little I can do. I know this is not a helpful reply. I can ask around for further information, but it will have to wait until after Thanksgiving.

--
David Rutten
david@mcneel.com
Seattle, WA

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Permalink Reply by Chun Qing Li on November 24, 2010 at 10:15am

Ok David, thank you very much.

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Permalink Reply by Brian Harms on October 13, 2011 at 6:04pm

Hey guys, this thread is probably pretty dead by now but I've always had good luck with rebuilding the curves/arcs before lofting to get untrimmed surfaces instead of open breps.

Works in both grasshopper and rhino. You loose out a little in terms of maintaining the exact original geometry, but with a couple hundred control points you get pretty darn close results.

hope this helps,

Brian