Surface from catenaries

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Permalink Reply by Daniël Smidt on November 13, 2013 at 7:00am

I was wondering this as well. 

The challenge is in the open brep which consists of a lot of untrimmed surfaces.

The Edge Surface component doesn't have an input for the amount of segments (goes for others like Sum Surface as well), so we are stuck with what you get out of the box.

 

I tried to use paneling tools to create a nice grid from the vertices (decompose brep) and then create a new surface from these points, but the order of points is not how we would like it.

In the list of points we first find the corner points, then the other points of the edge and then the other inner points. 

The solution attached is a bit of a mess, but it works for your example. Basically I reorder all points in a way to get some nice rows of points. Then a new surface is created (can use loft or surface from points). On the new surface we apply a Divide Surface component. Now you can make as many subdivisions as you want.

Maybe someone else has a cleaner approach. 

 

I hope you like it.

 

 

Note: I use a Paneling Tools component, so that plugin needs to be installed.

Attachments:

• test02_solved_dmsmidt.gh, 26 KB

Permalink Reply by David Stasiuk on November 13, 2013 at 7:21am

One thing to keep in mind with the catenary curve component is that it returns polylines, which are problematic for making untrimmed surfaces. If you explode your catenary curves and interpolate a nurbs curve using the vertices, you can get much cleaner results:

Permalink Reply by Daniël Smidt on November 13, 2013 at 7:30am

Much easier! Thanks!

Permalink Reply by Erick on January 13, 2014 at 5:06am

When i needed the surface i just used the surface I have made, but it was sooooo heavy when I moved it X times. Anyway thanks a lot guys!