Unable to apply "region union" on several curves on xy plane

Grasshopper
,
1

As shown in the example file below, I’m unable to apply “region union” to all the 26 overlapping curves, although it works for the first 18 ones…

All the curves are flat on the the xy plane, and I can’t figure out why…

Help is appreciated.

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unable_to_create_region_union.gh (12.5 KB)

2

Your file is missing the input curves.

Please right click the curve component and click ‘Internalise data’

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image1693×552 62.4 KB

3

my apology. I’ve updated the example file with the curves internalized in the curve component.
unable_to_create_region_union_updated.gh (28.3 KB)

4

This works just fine in Rhino 9 WIP.

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What Rhino version are you using? It could be a far from origin issue.

5

Thank you, Martin. I’m using Rhino v7.

You suggestion works like a charm. I moved all the curve to the world origin (0, 0, 0), and now the “region union” component works for all curves, as shown in the video below.

Thank you very much for the advice. I’ll pay attention to this “far from origin” issue from now on.

6

Glad I was able to help. In some situations it also helps to connect a plane to the plane input

7

Hi Martin, sorry for bothering you, again.

I’ve tested two new cases where the curves are close to the world origin point. However, only one works.

As shown in the example file, the workflow should create an outline for each cluster of overlapping curves.

As shown in the videos, the “region union” component works for the first case, but not the second one, and I’m sure what’s the difference between them that leads to the different outcome.

I’ve attached the updated GH file.

Hope you can kindly advise what is causing this issue.

Thanks.

unable_to_create_region_union_updated_2.gh (55.3 KB)

8

Both sets work fine in Rhino 9 WIP.