VB Strangeness!!

I have two definitions, each resulting in a 2Dvoronoi with the cells being returned as polyline curves. One definition uses the 2Dvoronoi done my dmitrie, the other uses the geometric edition by SAC3. In both cases the polylines are returned with identical datatrees, but for some reason only the one by dmitrie works, and i need to use the other one.

Attachments:

2Dvoronoi_strange.ghx, 364 KB

Replies to This Discussion

Permalink Reply by Suryansh Chandra on September 1, 2009 at 3:53am

Works fine for me. Have you tried the built in Voronoi in the new version of GH 0.60018 onwards?

Permalink Reply by Thomas Bildsøe on September 1, 2009 at 4:05am

is version 18 the one you are using? - in my grasshopper it gives the "an object reference was..."-error when i connect the SAC3 version.

Permalink Reply by Suryansh Chandra on September 1, 2009 at 4:19am

yup, I am using 18. 19 is out as well, but as david puts it, it was just a knee-jerk release to fix a few serious bugs.

Permalink Reply by Thomas Bildsøe on September 1, 2009 at 4:34am

im using 19... so far no problems... are you sure it works... i know that it draws the cells as i should, but the last component the vb.component returns null in the sac3(manual) edition and returns the index of the points as it should for the dmitrie(scripting) edition...

Permalink Reply by Elizabeth Tweedale on September 1, 2009 at 4:14am

Hi Thomas,

The vornoi solution you're trying to fix is having problems computing the boundary position. You should be able to fix the input parameters where I highlighted in order to fix the 'manual' solution. The definition is also starting off computing a 3d solution but then only uses the 2d part of the bounding box parameters therefore not accounting for the height of the points (which I know might all be at 0 but I think this is also causing an error).

Hope this helps,

Elizabeth

Attachments:

vornoi_problem.jpg, 312 KB
2Dvoronoi_strange_fix_here.ghx, 365 KB

Permalink Reply by Elizabeth Tweedale on September 1, 2009 at 4:23am

If my response was unclear:

It is working for me just fine as well, you have to make sure you define the boundary condition as a closed curve.

Permalink Reply by Thomas Bildsøe on September 1, 2009 at 4:32am

Thanks for the answers.

I opened your file, but i was still not working. It rather strange because i get the 13 polyline curves, so the definition works up until when the vb.net component reads the curves. It just returns null, and it should return a list of the corner vertices as a text string. And for the dmitrie edition, it works, it returns the corner points as strings.

Permalink Reply by Elizabeth Tweedale on September 1, 2009 at 5:33am

Hi Thomas,

The problem is the manual solution isn't a clean solution because it's using a boolean region difference (pink line) whereas the VB script gives you a clean solution which is why you can extract the correct vertices from them. If you zoom into your two solutions you'll see the problem.

Elizabeth

Attachments:

vornoi_problem2.jpg, 62 KB

Permalink Reply by Thomas Bildsøe on September 1, 2009 at 5:35am

You're right. Too bad there is no easy solution for this problem. I have no choice but to use the scripting one. But thanks for the help anyways!

/Thomas

Permalink Reply by Elizabeth Tweedale on September 1, 2009 at 5:58am

No problem, good luck!

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