Juraj's playground

[Diorn 5]

Awesome and clever work Juraj, inspiring! Keep this thread alive please

[trandzik 13]

On 4/28/2017 at 9:31 PM, Juraj said:

Hello, thanks! Glad you like it  Unfortunately I cannot share scripts because of the university policy, but will try to write a new one save incremental function  

# splits versioning string into letter and number, e.g. v025 -> ['v','025']
def verSplit(ver):
	head = ver.rstrip('0123456789')
	tail = ver[len(head):]
	return head, tail

# save incremental, tries to preserve version formatting
def saveInc():
	hipname = hou.getenv('HIPNAME')
	if hipname != 'untitled':
		v, num = verSplit( hipname.split("_")[-1] )
		num = str( int(num) + 1 ).zfill( len(num) )
		newName = hipname.split("_")
		newName[-1] = v + num
		newNameStr = hou.getenv('HIP') + "/" + "_".join(newName) + "." + hou.getenv('HIPFILE').split(".")[-1]
		hou.hipFile.save(newNameStr)
	else:
		print "cannot increment version name in untitled.hip"

 

Hi, thanks  Maybe, but this setup is not very portable and was made for our pipeline. It would require a bit of work to prepare for release and to make it work in most of the environments.

LOD switching would not require much of work in this setup. Just computing distance to render camera and then thresholding it into an LOD attribute. But in our case manual decisions proved to be most suitable.

Hello Juraj,

I stumbled across your incremental save function and I just want to let you know it could be done also with following command:

hou.hipFile.saveAndIncrementFileName()

Anyway your work is very cool and inspiring.

Cheers

Peter

[Juraj 251]

Inspired by couple of papers and Houdini tutorials I started playing with fractals and raymarching. Here are some of the results so far.

 

EDIT: see the following post for the project file

Edited November 14, 2017 by Juraj
added project file

[stickman 34]

Impressive!

 

[Juraj 251]

Project file for OpenCL and VEX raymarching.

raymarcher_ocl_vex.hipnc

[Juraj 251]

 

lit_sphere.rar

[Juraj 251]

On 3/16/2017 at 4:24 PM, Juraj said:

 

 

 

k_means.hipnc

obb.hipnc

[Juraj 251]

On 6/8/2017 at 9:01 AM, Juraj said:

 

added project files,
note that in interaction_forces.hipnc I used a technique for calculating eigenvectors which was a bit overcomplicated, I updated the technique in curvature.hipnc but did not update the particle sim setup yet  

interaction_forces.hipnc

curvature.hipnc

[Juraj 251]

On 5/20/2017 at 10:53 AM, Juraj said:

 

adding project files,
it is a bit messy because it contains all my nodes for exploring the techniques and testing out things, but still might be helpful for some
some paths are hardcoded but with a bit of fixing you can get it running

gridless_selma.hipnc

[Juraj 251]

Compiling C++ OpenVDB Hello World example using Houdini precompiled libraries on Linux - a quick guide, might be useful to somebody

[Juraj 251]

Compiling DreamWorks OpenVDB C++ nodes for Houdini on Linux and another guide - how to add DreamWorks OpenVDB nodes into your Houdini

[Juraj 251]

I wrote a guide on writing simple node operating on OpenVDB volumes in HDK: Creating simple C++ OpenVDB node in HDK

What it does is basically: the node will take a VDB volume as an input and point cloud, then at position of each point it will activate matching voxel in VDB volume.

You can also check repository with the code: VDB Activate from Points

[Juraj 251]

Houdini tip | Taking advantage of environment variables

In this post I show some examples of using environment variables to set up multiple configurations of Houdini for both windows and linux.

[Juraj 251]

Houdini tip | sRGB preview inside Houdini and Mplay

Here I show how to set up a sRGB preview color space inside Houdini which will match Nuke's default preview color space

[Juraj 251]

Houdini tip | Faster saving of scenes on network drives

Simple houdini env var which will speed up saving of large scenes especially notable on network shares.

[VFXArabia 0]

This is so awesome, Thanx for you generosity

[StephaneS 3]

Thank you very much ! So much talent !!!

[Juraj 251]

Feel free to check this tutorial / collection of VEX snippets I prepared. I tried to cover many different areas of VEX scripting, mostly stuff I found useful.

[Juraj 251]

Houdini tip: Camera auto-focus using Python expression

https://jurajtomori.wordpress.com/2018/02/06/houdini-tip-camera-auto-focus/

[Juraj 251]

New Houdini tip: Using HOU module in Visual Studio Code.

https://jurajtomori.wordpress.com/2018/02/20/houdini-tip-using-hou-module-in-visual-studio-code