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

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

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

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

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.

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.

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.

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.

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

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

Scratch that it doesn't work in 3D

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

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 !!!

Attachments: