contain 3d voronoi within polysurface (from relaxed mesh)

Hi everyone,

I'm quite new to GH and I'm trying to contain a voronoi within relaxed mesh from Kangaroo....Something like this..

But when i try to contain voronoi within polysurface (from relaxed mesh) & create wireframe.. it gives an mesh edges as well as voronoi edges... I want to have voronoi edges only...

Is there a way to eliminate these mesh edges? or contain a voronoi within polysurface some other way?

Attachments:

voronoiinpolysrf.zip, 1.6 MB
voronoiinpolysrf.gh, 5 KB

Replies to This Discussion

Permalink Reply by Daniel Piker on May 9, 2013 at 6:54am

Hi Joshua,

Is it just the edges of the voronoi cells that you are after ?

If that is the case, I think the extra mesh edges can be fairly easily culled.

If you need the actual volumes of the cells, then it might be necessary to convert the mesh into a polysurface with fewer faces (instead of one surface per mesh face), which is a little more work, but probably still possible

Permalink Reply by joshua on May 9, 2013 at 7:01am

Hi Daniel,

I actually want to select all the lines including internal and lines on the meshfaces of the voronoi.. without the mesh edges....

Permalink Reply by joshua on May 9, 2013 at 7:42am

Daniel, Thanks for your reply/suggestion..

I've tried to cull mesh edges from all the lines... but have still failed..

how would you do it?

Permalink Reply by Daniel Piker on May 9, 2013 at 7:52am

Here's a solution using the mesh for the intersections.

Attachments:

voronoiinpolysrf_2.gh, 845 KB

Permalink Reply by joshua on May 9, 2013 at 8:21am

Thanks Daniel! Really appreciate it..

so it wasn't so simple after all :P

This might be a stupid question.. but in the script, what is the reason for using weaverbird "wbjoin" rather than built in "mjoin"?

Permalink Reply by Daniel Piker on May 9, 2013 at 8:33am

yes, it wasn't until I started it that I realized the intersection components in grasshopper are not so complete for meshes as for polysurfaces, which complicates things rather.

I used the wbjoin command to remove duplicated vertices, which makes the mesh a little lighter to process. I think the new Grasshopper release has some weld command built in though

Permalink Reply by TS on November 26, 2015 at 12:27am

Hi Daniel, i'm wondering how you gave the thickness to the voronoi structure. I tried to use the tspipe component but the result wasn't as smooth as in your picture.

Permalink Reply by Andrew Cole on July 8, 2013 at 3:29pm