Brick/Stone Wall - Broken Horizontals

[michael 171]

Brick/Stone Wall - Broken Horizontals

 

here a fun(?) little problem...

given the following reference

http://donnamarie113.deviantart.com/art/BRICK-WALL-298282838

http://www.desktopwallpapers4.me/abstract/brick-wall-and-wood-floor-14568/

http://fc03.deviantart.net/fs70/f/2013/054/e/4/brick_wall_by_kayosa_stock-d5vy7u3.png

 

how would one go about building a wall like this - a brick/stone wall is VERY easy...but a wall with what I'm calling 'broken horizontals' is much more difficult...

 

if/when I have some time I'll see what I can do and post my results...if anyone has some good suggestions

 

[michael 171]

hmmmm

a series of divides - no convex, bricker polys with random values gets part of the way...

 

anyone know why a group SOP (by expression -> rand($PR) in a foreach would only work once?

[Skybar 360]

hmmmm

a series of divides - no convex, bricker polys with random values gets part of the way...

 

anyone know why a group SOP (by expression -> rand($PR) in a foreach would only work once?

Maybe it's just returning the same random number each iteration? Try something like rand(($PR*stamp("../../foreach1", FORVALUE, 0)))

[Sierra62 62]

for the group name try something like group_`stamp("../","FORVALUE",0)`

[MADjestic 18]

Something along these lines..?

 

http://s1.postimg.org/rw3xeku5a/rock_wall.jpg

 

https://vimeo.com/122815674

[Skybar 360]

Interesting shapes there Vladimir! I like the tetris one! How did you manage that? Only voronoi?

[michael 171]

@ Vladimir

ah yes...nicely done

 

do tell!!

 

I'll keep trying with the series of divides - it would be nice to be able to do this on simpler geometry...

[MADjestic 18]

Thanks, guys

 

It is all done with standard Voronoi.  The only difference is how you treat the second input (cells).  Some people just chug a point cloud and get a cell per point.  A more sophisticated solution is to turn  Voronoi SOP's clustering with "Add Cluster Noise", but that gives you... a noisy pattern which is ok for generic break-ups, but is hard to control.  What you do want is to control the cluster shapes.  Say, you've got a point cloud and it is is clustered, i.e. every point has attribute "cluster", type integer. For a Voronoi SOP, set "Cluster Pieces" on and feed your point cloud to Voronoi SOP.  

 

As for "teris" or lego-like look is due to a regular point-cloud (i.e. grid-like) with an addition of a few extra scattered points. It's a lot of fun to play with Voronoi in order to achieve various shapes.  The notorious "Voronoi-look" is not the fault of the algorithm, but of the input

 

Cheers,

Vladimir

Edited April 7, 2015 by MADjestic

[mestela 760]

Very cool tip, thanks Vladimir! Made a bunch of experiments, has become my lunch-break and after-hours obsession.

 

http://www.tokeru.com/mayawiki/index.php?title=Houdini#Voronoi_cluster_and_fracture

[Marc 281]

Those are really nice results. I've played with more regular seed point distribution before, but haven't combined them with clustering yet.

 

Now figure out a way to add space between each 'brick' so you can add concrete to the wall .

[michael 171]

well if it isn't little Matty Estella...

 

nice results....

 

I haven't had time to get back to this in a while but there are some very cool ideas here, thanks...

 

I really want to break open Substance Designer and figure out how it's tile generator works...

[mestela 760]

Heh, I had it in there, then decided to remove it for clarity.

 

Duly added back in. 

 

[Izat 4]

Hey, Vladimir! Thank you for your very helpfull post! Any chance to get a hip file?

 

Also how you would go about texturing? Is procedural way preferable in your example?

[Izat 4]

By the way can you by any chance post the hip with the otls implemented

Edited October 20, 2015 by Izat

[MADjestic 18]

The basics of the algorithm goes somewhere along the lines with: (rename the file to tetris.tar.bz2)

 

(re-uploaded the attachement)

tetris.tar.bz2.txt

voronoi_test.7z.txt

Edited July 4 by MADjestic

[mestela 760]

hmm, corrupt file when I unpack it under llinux...

 

any reason why you can't just upload the hipnc as-is? would be very interested to see the secret sauce in your tetris setup!

[Shinjipierre 38]

Tried to open it as well and it didn't work

[MADjestic 18]

oops, sorry!

 

I've updated the file.

[mestela 760]

ah, very cool! will have a closer look at this tonight, thanks for sharing!

[Kardonn 113]

Really cool technique! Not that I ever play around much with Voronoi, but never knew this functionality existed.

 

This is Vlad's setup fed into a ForEach based on the name attribute, generate a random noise seed inside with `stamps("../", FORIDXVALUE, 0)`, subdivide each piece, then use that seed to add a little Unified Noise variation to @P.y.

 

VDB -> Poly after just to surface it nicer.

 

I feel like you could mess around for a month with this general idea and keep coming up with new stuff.

 

 

tetris.hipnc