Procedural Voronoi panels

Hi everyone,

I've been cracking my head for a while trying to figure out a way to draw a grid of voronoi panels over a façade, a bit like Marinus van Hall posted here:

But where the density varies throughout the different parts of each panel according to a diagram I've drawn based on the amount of sun each part of the façade gets throughout the day:

Ideally I'd be able to vary the panel size as well as point density. I've tried a few different approaches, including this one, one that feature a world map and also another one that featured a projector (can't find it anymore), but I can't get from there to the panels. Besides, two of them used grasshopper add-ons. Seems like there'd be a simpler way to do this, but I'm having difficulty grasping the whole image to point density to panels workflow.

Any pointers would be greatly appreciated. Thanks.

Replies to This Discussion

Permalink Reply by Vicente Soler on November 22, 2013 at 2:26pm

Like this?

Attachments:

imagedensity.gh, 260 KB

Permalink Reply by Rafael Lemieszek on November 22, 2013 at 2:45pm

Wow, that's excellent! Thank you very very much! I was starting to get close to something similar but I was just clueless as to how to play with some of the variables. You've been most helpful. Thanks a lot!

I'll post what I had if anyone else's interested in expanding the subject.

Permalink Reply by Jesus Galvez on November 23, 2013 at 4:44am

Nice Vicente, but why do your definitions always crash my computer...

Seriously, what's the point of doing this? Why didn't you connect [Merge] directly onto [Voronoi]?

Permalink Reply by Nick Tyrer on November 23, 2013 at 5:09am

I would have thought its a quick fix solution to stop the voronoi density being disproportionately high along the borders. And it also just makes nicer cell shapes, being more even, there are less edges that are infinitesimally small

Permalink Reply by Vicente Soler on November 23, 2013 at 5:18am

It's more about spreading the points more evenly so density is more constant. The small cells on the borders are still going to happen.

It could be less noticeable if it's created first as a single voronoi diagram and then split into the panels (but then it won't look as the reference image). It could also be a good idea to remove the corner points I added before creating the Delaunay mesh.

Btw, I'm just following David's instructions as referenced in the OP.

Permalink Reply by Nick Tyrer on November 23, 2013 at 5:23am

Whats davids instructions as referenced in the OP?

Permalink Reply by Vicente Soler on November 23, 2013 at 5:26am

There's a link to another thread, it's small but its there.

(OP means opening post)

Permalink Reply by Nick Tyrer on November 23, 2013 at 6:00am

Ok cool, learn something new everyday...

As a slightly different solution you could use meshes to speed up that final step. Might not crash Jesus.

Attachments:

imagedensity v2.gh, 25 KB

Permalink Reply by Vicente Soler on November 23, 2013 at 6:10am

I'm guessing you used Weaverbird. I didn't go that way because the OP implicitly said not to use grasshopper add-ons.

A couple weeks I had to do the same thing (smooth a set of points) but used Weaverbird's Laplacian smoothing component. It's much faster than the smooth component that comes with GH, but I used it here because of the add-ons comment.

Permalink Reply by Nick Tyrer on November 23, 2013 at 6:16am

OOOOO shot down! To be honest, i was just flicking through forum and your post sounded interesting, so i skim-read and posted.

Permalink Reply by Vicente Soler on November 23, 2013 at 6:34am