how to create chain net like this?

hello

I would like to simulate a surface like this.

Any ideas appreciated :)

Replies to This Discussion

Permalink Reply by 哲凌 on April 28, 2012 at 7:41pm

hi daneil，
i don,t know how to smooth this.could you explain?

Permalink Reply by Lio on March 18, 2011 at 11:24am

Daniel what you do is very interesting! We can learn a lot from each discussion. About your model, is there a way to reorganize the anchor points (the naked mesh edges) from a rectangular distribution to a circular one?

Thanks
Lio

Permalink Reply by Amir Gazit on March 18, 2011 at 7:17pm

Hi Lio,
I guess you can reorganize the mesh and anchor points in any shape you like...
Is the pictures below makes any sense (circular reorganization of anchor points)?
Thank Daniel for such a special tool.
(Kangaroo+WeaverBird)
Amir

Permalink Reply by Lio on March 19, 2011 at 3:14am

Thanks for the reply, but I don't want to start from a mesh with irregular triangles and quads (for example transforming a NURBS to a mesh).

My aim is to start from a quadrialteral mesh (with rectangualar border) and then "relax" also the border vertex to obtain a circular border. In this way I can mantain a quadrilateral and regular topological mesh (for example I could use T-spline to create smooth NURBS). Is there a way to "repel" the vertices of naked edges?

Thanks again

Lio

Permalink Reply by Daniel Piker on March 19, 2011 at 3:54am

Sounds like a constrain to curve option would be really useful here.

I probably won't get round to it until after smartgeometry now, but I will add this in a future release.

In the meantime, you could do this by placing anchor points around the starting square border and moving them towards pre-defined target points on the circular border while the simulation is running.

Permalink Reply by Daniel Piker on March 19, 2011 at 3:56am

Here's a simple example of pulling a square mesh onto a circular border

Attachments:

circlepull.ghx, 209 KB

Permalink Reply by Mårten Nettelbladt on March 19, 2011 at 3:52pm

Very nice! I posted a video where I try this definition.

Permalink Reply by Wiktor Kidziak on March 19, 2011 at 4:07pm

do you know why do I get null values?

Permalink Reply by Daniel Piker on March 20, 2011 at 4:03am

I think maybe you have a different version of UTO's mesh tools, and the NakedEdge component in that.

Mine has a V, A and B output, whereas yours there has only V and A

Permalink Reply by Lio on March 21, 2011 at 2:31am

Daniel it's very interesting your approach! Now I will try to apply this definition to the relaxation one to obtain circular meshes with quadrilateral topology.

Let's start!

Bye and thanks so much

Lio

Permalink Reply by Wiktor Kidziak on March 27, 2011 at 1:34pm

I am trying to pull a mesh to a freeform closed curve but it throws me exeption: Index was out of range.

Could you tell me what I am doing wrong?