Closing contour curves

Grasshopper
1

hello,
i have a bunch of contour curves in different heights,

contours
contours1498×588 104 KB

and i would like to make them closed in order to make surfaces from each curve
closing_
closing_1920×1508 89 KB

any ideas?
CloseCurveHlp.gh (2.3 MB)

2

hey,
i tried to trim my frame curves with the topo curves, or to intersect, but it does not work either.

i will be thankful for any help possible
close topcurve HLP.gh (858.5 KB)

3

Here’s something to get you started. The issue is once we Split the rectangle to close the curve we need a way of choosing the right segment to keep. Is it a inside closure or an outside, i believe there will be instances of both.

image
image2669×567 167 KB

Re_CloseCurveHlp.gh (2.3 MB)

4

Check the move as well, i was assuming the unclosed lines were trimmed at the rectangle.

image
image1863×726 117 KB

5

Hi @EliabuRada

It is not perfect, but it is something.

  1. order lines by height

  2. generate surfaces on each height

  3. split surface and do some filtering

image
image1898×302 53.8 KB

CloseCurveHlp.gh (2.3 MB)

6

Do you have just the curves or also the mesh of the terrain?

7

Also the mesh,
Here:
CloseCurveHlp_v01.gh (3.1 MB)

8

Hi Erik Beeren,
Thank you very much for your help, for the moment it doesn’t work, maybe because i am missing the curve midpoint component, but i am using the point on curve, which should do the job…
the curves on your script are projected to the c plane, and i am trying to close them, but keep them in their position.

9

In Rhino, extrude the mesh downwards. The result is a closed mesh in this case. Using that for the contours, there’s no need to close anything.

image
image1410×412 50.5 KB

CloseCurveHlp_v01.gh (4.3 MB)

1 Like
10

This is Great!!
thank you very much