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Need help with loops and Foreach


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  • 1 month later...
1 hour ago, Eyteneyer said:

Please! Which version of houdini is it built? Every time I try to open a file in 15.0.274 a lot of errors will come out and in the end nothing will work!

Try the file associated with this video, you can get very similar results and I think it should work in older versions. This isn't mine but I was messing around with it before Matt's version and I could get a very similar style out of it. There's 4 or 5 different styles of cutting in the file that can be downloaded from dropbox. Link for the file is on the vimeo page.


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3 hours ago, Atom said:

Playing around with this subdivide on a hexagon grid.


Looks good, I'll have a play with that in the morning.

Here's a couple of setups for getting L-shaped cuts and 45° cuts, the angle can be changed to anything you like. Everyone feel free to mess around and post any ways to improve them.




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  • 2 months later...

@Dimitris Can you provide the houdini file ? i tried to recreate yours but i'm a beginner in houdini and i don't understand some paramaters like the random of the polysplit. When you put a polysplit you need to select what you need to split and what i'm understanding for your technique that you random select the edges ? how can i do that ? 

Your work is just awesome and all of you in this threads are incredible... 

Hope i can post some render when i figure it out it works :)


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On 24. 11. 2017 at 4:41 AM, mestela said:

I'm sure there's better ways, but here's my attempt. Will explain more if I get time later...



When I open the hip file, there is nothing in the viewport, not even if I make the grid node visible or enable template. I'm on Houdini 17.


I copied the all the nodes into a new session. It works now.

Edited by reeson
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  • 4 months later...
On 1/16/2019 at 2:50 PM, Tylox said:

@Dimitris Can you provide the houdini file ?


On 12/2/2017 at 1:07 PM, Dimitris said:


Would love to see it too. Really wondering how he makes that work with 2 for loops with the 2 switches. I'm also a beginner.

Edited by OdForest
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  • 4 months later...
On 11/24/2017 at 4:58 PM, Werner said:

Forgot to mention where I got the idea from. There is a beautiful render on the SideFX gall done by Dimitris Ladopoulos, that made me want to explore loops Foreeach. 

Thanks again for the great example Mestela. I'm yet to understand how it all works, but I will take my time.

one more for fun.




I know I am very last to this party but I really love this style and am just getting into Houdini......I was wondering if you could explain a bit about how you textured and lit this scene.....Thanks!

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On 11/28/2017 at 3:06 AM, Dimitris said:

Hey @Werner and @mestela

I was surprised to find this thread with the Algorithm stuff I posted a few days ago.

See more at https://www.behance.net/gallery/59061121/Algorithm

I'm glad it got you interested and thankful for people like mestela!

I am also relatively new, so my method might not be very efficient or elegant, but here it goes:

I tried a couple of way but ended up using polysplit with edge loops in order to have local space rather than world space.

I ended up with 2 variations. 1st one splits each primitive with a random number of edge loops (eg. 0-4). Blue loop splits horizontally, green loop splits vertically. I could only get equally spaced splits so in the 2nd example I tried to make it split each primitive a random number but at a random distance (0.2-0.8) each time.

Hope this helps.




1st method.png

2nd method.png

Your images are amazing.....and thanks for sharing this.....one question......can you explain what the switches do inside of the inner loops....Thanks!

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