Planarize roof surface panels

Grasshopper Kangaroo
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1

Hello

I would like to divide a roof surface into row of panels, which are:

  • Quads. But if necessary, few triangle/pentagon panels can be accepted
  • Planar panels
  • The less rows of panels - the better.
  • Top edge of the roof surface should be fixed - it should have anchor points.

Can someone help me with this task?

I think my problem is initial mesh topology mesh, which needs to be created according to roof principal curvature, is wrong. And I do not know how to create the right one.

I appreciate your help in this difficult matter.

Planar Surface panels.3dm (522.8 KB)

Planar Surface panels.gh (15.2 KB)

image
image721×1464 105 KB

2

Please give it a try with PanelingTools, and fyi.

https://www.food4rhino.com/en/app/panelingtools-rhino-and-grasshopper

GenerateFlatFaces
GenerateFlatFaces2041×571 120 KB

GenerateFlatFaces.gh (67.1 KB)

1 Like
3

Hi @jessesn

I am grateful for your help!

One thing PanellingTools does is that panels are not joined with other ones.
I forgot to mention: I need this too. PanellingTools threats each panel as an individual object without connection to neighboring panels:

image
image1040×1352 30.7 KB

Probably that is why I have to use Kangaroo instead of PanellingTools.
But I am lost in defining the initial mesh topology.

4

I noticed that you require all panels to be flat, while the base surface you provide is a curved surface with curvature. For this specific case, PanelingTools is an excellent solution.

BTW, You can modify the input paramter M in the Generate Flat Faces to choose which point to leave ‘suspend’(the panel will pass entirely through three of the points, effectively ‘abandoning’ the fourth point)

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5

Hi @jessesn

I am really grateful for your help!
It is good to know about this M option!

I still need the panels to be joined.
Kangaroo would try to do that by slightly deviating from the initial curved surface.

6

Hello @DanielPiker
If I could get any help from you about the initial topology mesh it would be a gigantic assistance for me. I am at the moment stopped with this planar panels difficult task.
Thank you truly.

7

Hello @DanielPiker

I am using your principal curvatures definition to create the initial topology mesh:

image
image1415×215 27.9 KB

I set this topology mesh to your isothermic quads Kangaroo definition.

For some reason the final Kangaroo Solver mesh remains in a single plane. It does not follow the shape of the curved input surface:

image
image1392×383 25.1 KB

Would you be able to tell me what am I doing wrong in the attached isothermic quads definition?

I would be very grateful for your help in this difficult task. I can’t thank you enough for this.
Planar Surface panels 2.3dm (1.8 MB)
isothermic_quads.gh (29.6 KB)

8

If it is a mesh, you can try GitHub - xarthurx/IG-Mesh: An one-stop solution for mesh processing in Grasshopper (for Rhino).

There’s a build-in quad planarization component.

image
image874×358 87.4 KB

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9

Appreciate your help @xliotx .

By looking at the upper definition it seems that IG-Mesh has no capability to define the underlying surface. Kangaroo has this input and also ability to define the strength of the pulling towards the surface.

Nevertheless I am sadly still on Rhino 6 SR35. IG-Mesh supports Rhino 7, 8.

10

Yes. To enable cross-platform support, I dropped the support for Rhino 6.

1 Like