How can I make boundary surfaces from these two lists of curves?

Grasshopper
,
1

Ellipsoid.gh (25.5 KB)

Ellipsoid 2
Ellipsoid 21614×749 392 KB

2

You could use this RhinoCommon method:

I forget if it has been implemented in Grasshopper yet, but the script works natively.

3

Thank you!

  1. Solution exception:‘NoneType’ object has no attribute ‘Ngons’
    Ellipsoid 3
    Ellipsoid 31508×755 288 KB

    It’s working now, but I still have to modiffy the definishion.
    Ellipsoid.gh (31.0 KB)
4

You can do something like this too:
Ellipsoid_b.gh (46.9 KB)

image
image1920×1161 122 KB

Note:
You might have to simplify your top/bottom panels to avoid the curve/pinch - not sure what the design specs are there.

'Hope it helps!
RC

5

Tanks René! But I have a missing component:

Missing component
Missing component955×608 93.2 KB

I want to try to understand how it’s working.

6

I think that I need a horizontal lines to make a surfaces, I got to these 3 polylines, but I don’t know how to create separate triangles from them.

Polylines
Polylines1696×710 277 KB

Ellipsoid.gh (36.2 KB)

7

Oh, sorry - that’s a RemoveDuplicateLines - strange, it should be there.

Here’s a workaround:
Ellipsoid_c.gh (47.4 KB)

8

Looking at this image it seems you could simply pull the boundary curves onto your surface and then split the surface using those curves - slower brute-force process but might work

9

Thank You! I’ts very helpful if with that center points I can mesure the angles bethwin nonecoplanar triangels.

1 Like
10

Great! Also, regarding that pinch on the bottom panels, I guess a ‘four point surface’ component can be used (omitting one point for the bottom row of panel boundaries.

Cheers!

11

I found I can use Lunch Box diamond panels.

12

Finaly it’s working!!!

Ellipsoid 4
Ellipsoid 41497×732 217 KB

Lunchbox Grasshopper Tutorial (Diamond Panels).gh (17.1 KB)

1 Like
13

NICE WORK…can you please point me to the tutorial…I can only find one for the framework

14

I used this for the framework, other I’ve made on my own.

15

as a follow up to this …is there a method in GH to find all the surfaces resulting from intersecting lines ? I know I can achieve this individually with network curves and wondered if there is a way to detect all the possible surfaces.
The two curve components are seperated into horizontals and verticals.
network surface.gh (7.0 KB)

network surface
network surface1920×1050 56.1 KB

16

try region

17

I can find intersecting regions individually but it doesn’t find multiple regions…

18

surface.gh (16.4 KB)

img1
img1492×661 15.8 KB

19

thank you…I thought there must be a way with surface split but I got stuck…I also found the solution by David Stasiuk…Closed Curve Intersection Network - Grasshopper

20

there’s also a very nice class for that in rhinocommon: https://developer.rhino3d.com/api/rhinocommon/rhino.geometry.curvebooleanregions?version=8.x

a very poorly-implemented Python as a single component solution:

image
image1767×859 226 KB

CurveRegions.gh (17.9 KB)