Script for panelling

Replies to This Discussion

Permalink Reply by Daniel Piker on December 6, 2012 at 6:07am

Assuming this is the same form-found gridshell you have been working on earlier...
If you have a flat and regular starting geometry before the form finding process, then it should be much easier to group the points of each polygon on this grid, and then use that data structure to retrieve the corresponding polygons on the deformed grid (if using kangaroo, the "geometry" input accepts tree inputs)

Permalink Reply by Rasmus Holst on December 6, 2012 at 6:16am

Hi Daniel. 

You are right. I might not think clearly, but I am not even sure how I would create the mesh from the planar grid? But yes then I guess afterwards I could use this as the identifier of each polygon vertices.

Permalink Reply by Daniel Piker on December 6, 2012 at 6:45am

Not a mesh, but a polyline for each hexagon or triangle.

Weaverbird has the tools you need for this:

You could then bake these polygons into Rhino and select the ones you want for your starting flat grid, and feed the vertices of these into the Kangaroo geometry input (where each branch of the tree contains a list of vertices for a single polygon)

Permalink Reply by Rasmus Holst on December 6, 2012 at 7:04am

Yeah I get your point, and it is what I want to do, exept, I do not construct my structure as a hexagon structure, rather as long straight and intersecting strips.... So I need to figure out a way to construct my polygons from this initial grid. But I think, working with Voronoi and Delaunay together with a measuring distance would be a way to go...

Permalink Reply by Daniel Piker on December 6, 2012 at 7:34am

I realize that you need the continuous lines for the actual simulation input, but that can be separate from the geometry input. So long as the lines are divided at the intersections and the points coincide, they will stay attached.

I'd actually recommend just making these lines in Rhino - as it is a regular grid, it can be just a few seconds of simple copy-pasting, and no real benefit worrying about how to make it parametric.

Permalink Reply by Rasmus Holst on December 6, 2012 at 8:19am

Hi Daniel. I kind of solved it. I did the grid division with Voronoi and two sets of closest points. Then I input both these polygon vertice trees and the lines as input, they both output correctly and I can sort them after lines and points. Now I just have to figure out how to draw the polyline after the vertices in the correct order... I remember once someone told me about, draw the polyline, split and join or something, but I can't make it work.

Permalink Reply by Rasmus Holst on December 7, 2012 at 1:59am

okay I got that as well, now I will try and use Kangaroo and planarizeAnyPolygon, I am not really sure how I should constrain the surface though? I would be nice, if it was somehow possible to planarize these by only moving the vertices in the normal direction of the "surface" at these points?