I added new feature to DLProcedural and right now we are able to add point attributes at render time, so if you have forgotten about add pscale or whatever else – here is solution! 
Of course we can modify them by cvex!
DL is working with int, float, vector3, vector4, matrix3, matrix4 attributes.
If you would like to test it, ask me in person by email.
Cheers
Little update, fixed bugs.
sphere modified by Perlin noise at render time
more info soon.
cheers.
Today I built quite a big scene in Houdini. I was looking for dependencies so I turned on dependency links between nodes. In front of my eyes big bush showed up! Many links with the same colors, that was really crazy. I decided to change link colors!
I couldn’t find anything in the properities window, so I started looking for color scheme files.
I found them here:
$HFS/houdini/config/*.hcs
Usually I use Houdini Dark scheme, that’s why I replaced two lines in UIDark file:
NetworkWireExtraNormal: HSV 227 0.5 0.8
NetworkWireExtraActive: HSV 277 0.3 0.95
Right now I have beautiful colored bush
I hope you find it helpful.
Piotr
In the meantime of Happy Feet production I wrote my first DSO for Mantra, It’s my first tool written in HDK. The idea is very simple: Load geometry at render time and modify it by CVEX code. This version is a raw version, probably it has a lot of bugs, but I will try to make it better!
How to install ?
otl file goes to ${HOME}/houdiniX.X/otls/
so file goes to ${HOME}/houdiniX.X/dso/mantra/
VRAYprocedural goes to ${HOME}/houdiniX.X
That’s all!
What does it add to Houdini?
First thing is procedural shader called: Delayed Load CVEX. It’s available in the SHOP context.
Second thing is Delayed Load CVEX Global VOP node. It gives you an access to predefined global variables.
Special Global Variables:
We have two special variables: geometry and proceduralid. Geometry variable gives a string, which is a path to geometry leaded by delayed load. It’s a shortcut, we don’t have to create parameter node with expression between delayed load and CVEX shader. Proceduralid variable gives you an access to Procedural ID parameter on delayed load shader. But what is it for ? It can be useful when you would like to modify the same geometry with the same CVEX shader but with a different seed.
Have a good fun!
Cheers,
Piotr
Yeah I did some Fourier Series in CHOPs, only for fun, how to play with integrals in chops.
I used this law to draw every harmonic function:
here are results:
Graph was mess, I know I should build it with for loop.
I am thinking to apply fourier series formula to geometry, idk what will happen, but it’s interesting.
I used this paper:
http://webpages.dcu.ie/~applebyj/ms224/BT2_FSER.pdf
Cheers,
Peter
Hey folks!
Yeah I did something awesome! I found some computer tomography(CT) images and I tried to visualize CT data in Houdini, here are amazing results:
First step is to find some CT data, this page:
http://digimorph.org/
it’s AWESOME for that, you can find there whatever you want 
Here is my CT image sequence:
and here is data in Houdini:
one slice:
density:
and iso surface:
Other data, human body:
it’s for NON-COMMERCIAL purposes.
cheers,
Peter
Hey folks I have started adventure with Wolfram Mathematica. Amazing program for mathematical calculation and great tool for equations visualization.
I started from Snell’s Law, to learn expression language etc.
Amazing tool for everyone who love do something with math at everyday.
Cheers
You can find me on first photo near left edge, blurred ghost
