Grasshopper

algorithmic modeling for Rhino

GH sweep1 error

Hi,someone would help?

I'm just a new user of grasshopper and here encounter a problem.

Problem is that

- I have already made the section & rail curves in GH

- I have backed section & rail curves into Rhino

- In both GH & Rhino interface, I made a sweep1 and it seems each of them made different job. see pic, surface in light green is what GH has done and the red surface is what Rihno did. The difference is obviously, Rhino sweep the section while keeping the section curve perpendicular to rail, but GH made a different choice.

Why this this situation happen?

Thanks.

 

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Permalink Reply by David Rutten on April 30, 2014 at 4:09am

Moved from FAQ into Discussion.

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David Rutten

david@mcneel.com

Permalink Reply by Danny Boyes on April 30, 2014 at 4:57am

I would Copy your Section curve to the end of the rail so that you get the results you want.

In this example I have used [PFrame] to get the Perpendicular Frames at the end points of the curve and then used [Orient]. 

You might not have the functionality of the new [List Item] as I have used it here but a (i)[Split List] = 1 will do the same job. 

Note you need <Reparameterize>(C)[PFrame] for this to work

Permalink Reply by Yubo Hu on May 4, 2014 at 11:03pm

Many thanks Danny, with your instruction I have made the correct shape.

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