Generate Borders Error - Paneling Tools

Hello,

I am attempting to use generate.borders component after creating grid from surface domain by length. When I define the panel shape input to be based on ISO I get some inaccurate results. Please see the attached image. When I change the panel shape input to be straight, the grid data passes through just fine and generates correct panels.

The results from an ISO based panel shape generate inaccurate results:

1)One panel is missing.

2)There are panels on top of panels, as well as large portions of the surface that become panels (spanning more than just a 4pt area). See highlighted in yellow on image.

The data coming out of the create grid component looks to be organized. My thought is this is happening because of the complexity of the surface. However, Rhino says the object is a valid surface and it looks to be clean to me (created from a network of crvs).

Has anyone else run into a similar issue and know what the problem may be.

Many Thanks,

Ron

Attachments:

Generate Borders Error.jpg, 687 KB
Generate Borders Error.gh, 371 KB

Replies to This Discussion

Permalink Reply by Rajaa Issa on December 15, 2014 at 1:13pm

I see this, and here is why it happens.

For each edge, the command generates an isocurve (a full loop or closed curve in this case) and split at the 2 intersection points. Next it will try to figure out which portion of the isocurve to keep. In this case and due to big distances, the algorithm did not figure it right in some cases. If you try a U distance of 1 for example, you get accurate result.

I will review the algorithm and test with your case to see if I can make improvements to make it more robust. Thanks for sharing this example.

Permalink Reply by Ron Shvartsman on December 15, 2014 at 1:25pm

Thanks for your speedy reply Rajaa. I understand it may not be something which happens overnight, but it would be great to hear back from you about your review on this specific case :)

Thanks

Permalink Reply by Rajaa Issa on December 16, 2014 at 9:52am

I have some ideas of how to improve it. Will keep you posted.

Permalink Reply by Ron Shvartsman on December 16, 2014 at 12:14pm

Thanks Rajaa.

I had a quick question. Would you be able to tell me:

When using the generate.face component with ISO based panel shape parameter input, what method is used to generate the srf panels?

Thanks

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