Help with relaxation mesh on a custom shape

Hello all....

I have a custom shape that I'm trying to apply a mesh relaxation on with Kangaroo... and to be honest I'm at a loss as to how to approach it.

I would just like edges of the shape to stay grounded or become "anchors"... I have tried to convert the surface of the shape into a mesh in GH but it only converts to rectangles and triangles so I can't get the exact shape... I alternatively tried the Mesh from Surface command in Rhino (image below) and when I try to use that shape and I run Kangaroo everything goes haywire.....

Any ideas???

I was also wondering how I could get the red curve on the inside of the mesh to be used as "anchors" to crease the shape there... I have seen some tutorials about this but almost everytime the tutorial shows it using mesh edges(? not quite sure)

Attachments:

Sales Center Organic.3dm, 688 KB
Sales Center Organic2.gh, 18 KB

Replies to This Discussion

Permalink Reply by Daniel Piker on March 25, 2013 at 8:04am

Hi Jason,

Here's a definition with a few pointers for how to improve the behaviour.

With only zero-length springs as you had it, it is just trying to minimize the surface area, but it starts out flat, so this has no effect.

I'm guessing you are after a hanging-chain type form, so I added gravity.

The meshing is a slightly more complex issue. When you are doing a relaxation based on the edges, the geometry of the mesh becomes quite important. I've shown how you can use the Grasshopper meshing settings to get a better input mesh, with less variation in face sizes.

Attachments:

SalesCenterOrganic2_.gh, 23 KB

Permalink Reply by Jason Wheeler on March 25, 2013 at 9:02am

Daniel, thanks for the quick reply... I'm anxious to see this... but, I am now on my home computer and forgot that I have been having trouble installing Kangaroo on it... these are the errors I get

Object: KangarooA (level 1)
{
Exception has been thrown by the target of an invocation.
TargetInvocationException
}

Object: KangarooA (level 2)
{
Could not load file or assembly 'KangarooLib, Version=0.0.8.5, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
FileNotFoundException
}

Permalink Reply by Jason Wheeler on March 25, 2013 at 9:37am

Daniel, sorry I went through the install instructions again and found that I hadn't unblocked the files....

This is great!! from what I can see so far this is just what I was looking for to move forward... One question though.... How can I make a crease in the mesh relaxation? I watched the Kangaroo - Mesh Relaxation - Tutorial 3 you had posted a year or so ago, which was of a hanging tent... Is there anyway I can used the red curve that is on the interior of my surface to crease it??

Thanks so much for your help!!!

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