Generating a square grid on a freeform shape / brep

Grasshopper
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1

I need to generate a square grid on a list of freeform surfaces. I managed to do it on previous surfaces as they were close to planar. I used a projection of a 2D square grid on the geometry. This method is present in the file I attached.

The issue with the attached shape (see screenshot below) is that it is folding back on itself, meaning a simple projection will not work. This shape is a brep (polysurface) composed by 59 surfaces.

image
image1600×1200 39.1 KB

I was thinking to unroll this brep and/or maybe roll a 2D grid onto it but I haven’t had any success so far.

Some pointers:

  • It’s ok if the squares are not really squares as long as they look square and regular from afar.
  • This grid should ideally be composed of lines shorter than a specific value (maximum member length for structural purposes).

Square grid.gh (225.9 KB)

Thanks!

2

You may give it a try with ShapeMap, and for your reference.

ShapeMap_Panel.gh (118.3 KB)

ShapeMapPanel
ShapeMapPanel1642×1061 143 KB

3

Hi Jessesn, thanks for your answer, this looks like an amazing tool!

I managed to get something that I will further refine on my own.

image
image923×661 13.6 KB

4

Hello Jessen.

Why does the geometry input of my MapToshape component only accept points or curves?

6

If you are using the ShapeMap in Rhino 8, it indeed only supports points and curves as input. The built-in ShapeMap in Rhino WIP supports points, curves, meshes, SubD, and even Breps. For more details, please check here

Rhino WIP Feature: ShapeMap for GH1

7

Very thanks