Capping (3 edge surfaces) out of a triangular network of lines

Hi everybody,

I made a short GH definition to get 3 edge surfaces out of a triangular network of lines.

My problem is that I don't know how to automatically iterate the process to get 100% of surfaces at the same time.

Any suggestions?

THANK YOU !!!

Matteo C.

by the way:

I know that sometimes my definition produces duplicate surfaces, but cleaning after baking into Rhino isn't a trouble.

Attachments:

Triangular panels out of a lines network.3dm, 55 KB
Triangular panels out of a lines network.gh, 10 KB

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Replies to This Discussion

Permalink Reply by Danny Boyes on June 13, 2012 at 4:56am

My approach would be to use the Delaunay Mesh Component to get the faces to work with.

see attached

Attachments:

Triangularpanels_db.gh, 7 KB

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Permalink Reply by Matteo Cherubini on June 13, 2012 at 5:40am

Hi Danny,

your solution is smart and "elegant" but it doesn't work properly with complex geometries.

See my example.

Attachments:

Example_01.jpg, 130 KB

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Permalink Reply by Jon Mirtschin on June 13, 2012 at 5:54am

Hi Matteo,

If a plugin solution is acceptable, StructDrawRhino has some curve network traversal routines. Can create a mesh or planar faces as desired.

Installation instructions are at http://www.geometrygym.com/installing I'm happy to advise further.

Attachments:

Triangularpanelsoutofalinesnetwork structdrawrhino.gh, 3 KB

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Permalink Reply by Danny Boyes on June 13, 2012 at 6:02am

You could remove faces that don't meet your criteria with the cull pattern component.

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Permalink Reply by Matteo Cherubini on June 13, 2012 at 6:05am

Hi Danny,

I already know your plugin, but I'm struggling to find a solution that's 100% made with standard GH components.

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Permalink Reply by Jon Mirtschin on June 13, 2012 at 6:33am

Hi Matteo,

That's why I posted, I think you're going to find it really difficult to do with native grasshopper components. The iterative traversal doesn't lend itself easily to a native solution from my experience. Best of luck with finding a solution, I wish I could help more.

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Permalink Reply by Matteo Cherubini on June 13, 2012 at 6:55am

Hi Danny,

it seems that sometimes most of surfaces don't meet this criteria! Furthermore empty cells must be filled one by one in Rhino.

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Permalink Reply by Danny Boyes on June 13, 2012 at 7:33am

I see the problem now.

Try this method with your example.

Attachments:

Triangularpanels_db_mk2.gh, 11 KB

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Permalink Reply by Danny Boyes on June 13, 2012 at 7:47am

Scratch that it doesn't work in 3D

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Permalink Reply by Danny Boyes on June 13, 2012 at 10:07am

Just as a matter of completeness. I've overcome the 3D issue with this next version. But it won't work for cases where the you have a sphere etc as it projects to a plane.

Attachments:

Triangularpanels_db_mk3.gh, 16 KB

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Permalink Reply by Matteo Cherubini on June 13, 2012 at 7:55am

Hm...your previous release was better.

I've improved my definition...now with autobake (from LunchBox tools) it's a little bit easier to manage hundred of panels.

If I could only manage a "timer" for automatical number generation (from 0 to X)..... in a couple of minutes my 3D frame would be completely meshed...while I'm drinking coffee !!!

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