Problem making 3D voronoi

Replies to This Discussion

Permalink Reply by Brian Harms on January 31, 2017 at 12:52pm

Havent watched this yet but try this and search for similar stuff:

https://www.youtube.com/watch?v=FGnrZPd3Zys

Permalink Reply by Arian Sadafi on January 31, 2017 at 2:31pm

thanks so very much !
but i think the video was about 3D voronoi ! that i couldn't use !
I still don't know how i can make the connection between layers :(

Permalink Reply by Brian Harms on January 31, 2017 at 2:43pm

I think 3d voronoi would lend itself very nicely to the first image you posted, where the point data you input is arranged in a sort of layered fashion (imagine 3 pieces of paper each with points distributed on them, and there being 1-2 cm of space between each sheet of paper).

The second image looks like it could be easily done by doing 2 layers of 2d voronoi where the layers are slightly concave to one another, and each voronoi layer is mapped onto each surface using map to Surface. Think of a very flat pillow, where the top of the pillow gets one 2d voronoi, and the bottom gets the other. 

Permalink Reply by Arian Sadafi on February 1, 2017 at 3:42pm

Yes !! you are totaly right ! 

I had the same approach for the papers with 3 list of points but i cant understand how i should give the input data to the 3D voronoi component !
the best result i could get was so so far from what i really wanted to do !

Permalink Reply by Brian Harms on February 2, 2017 at 4:03pm

I would try creating 3 rectangular surfaces, one on top of the other, then use the populate 2d component to put points on each. Then merge the points and just plug them all into the voronoi 3d component. 

Then the challenge is taking the cells that you get from it and making them all smooth and sexy. Which is something I would probably look into weaverbird or exoskeleton for.

Permalink Reply by Arian Sadafi on February 11, 2017 at 3:04am

so i did the same as you said but the result i could get is something like this, i think the difference is that i need the edge of each 2D cell get connected to the other on the other surface ! 

in this approach the logic of the 3D Voronoi is the same but the points are made and given to the component and it gives the same output with different point of numbers ! :(

Permalink Reply by Chapulin Colorado on February 2, 2017 at 4:39pm

hi, maybe this helps you

you just need adjust point number and offset your brep i think

Attachments:

• voronoi.gh, 14 KB
• qweqw.JPG, 118 KB

Permalink Reply by Arian Sadafi on February 11, 2017 at 6:31am

hi ! thanks for your answer !

sorry im new to grasshopper so i don't totally know if i had done right with your file !
i dont know what i should set for the surface ( to offset ) and curve ( for curve CP ) components.

the result i could get is somehow similar to yours but the voronoi is only made for the outer surfaces of my berp ( box ).

I'll upload the screenshot .

Permalink Reply by Chapulin Colorado on February 11, 2017 at 3:37pm

hey, its the brep cure intersection component when i remember well, dont have rhino atm, just skip this  component and you should get a result closer ro your pic. for the surface you set the bbox(or srf) to get the 3 layered structure, like in your pic.

for the cr closest point hae a look at the atractor things.

monday i can upload your a changed file, but you learn more tring it by yourself.

Permalink Reply by Arian Sadafi on February 11, 2017 at 3:49pm

hey, thanks so very much !
I will start in 30 seconds :))

Permalink Reply by Arian Sadafi on February 24, 2017 at 8:17am

so i tried to do my best and did as you said !
now at least the result is kind of not so far from the thing i want

but it's quite a mess and so i still cant reach the point ! :(

sorry for bothering but it's kind of important for me !

thanks so much :)

Permalink Reply by Chapulin Colorado on February 24, 2017 at 12:24pm

please provide yuor definition, also the one from pryor(you asked in a another thread, when i remember well?)

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