Create boundaries regions in Grasshopper

Hi all,

My situation is the following. I have:

a list of open curves
a point cloud on the xy plane

The curves are opened but all together create some closed areas that I would like to convert to regions, if the points of the cloud are within their boundaries.

It's actually less or more what hatch boundaries does in Rhino.

Any idea?

Thanks guys,

Claudio

Replies to This Discussion

Permalink Reply by Michael Pryor on October 21, 2014 at 7:47am

Upload files.

Permalink Reply by Fred Becquelin on October 21, 2014 at 8:01am

Hi Claudio,

Look for Half-Edge Structure in the search box...

http://www.grasshopper3d.com/profiles/blogs/closed-curve-intersecti...

http://codequotidien.wordpress.com/2012/08/15/half-edge-mesh-2/

but I think the latest is non-comercial...

Permalink Reply by Claudio Campanile on October 21, 2014 at 9:57pm

Hi,

Thank you for your quick answer. Fred, I took a check to the links, but actually I think that they are not suitable for my situation. The reason is that the curves I take from the file are not so clean since those are from a citymap.

So, the goal is build buildings from a 2D map which includes the number of floors each building has. With the definition You find down here I have a list with the number of floor and the point inside the 'area' (which I would like to convert to a region) which has to be extruded.

Here I uploaded the file. If you don't see the ideograms it's because you don't have ideograms installed on your pc - it's normal - and the definition I have done so far works anyway.

Cheers,

Claudio.

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