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Hi there,

here's the next AHTYA episode. Besides a plethora of inbuilt compiled operators Houdini offers the possibility to develop your own operators, using the VEX programming language. As coding is not for everyone, Houdini has a visual, node based coding environment, too, called VOPs. Short for Vex OPeratorS. This time I introduce you to VOPs. As a practical example of using VOPs we work with noise. After explaining the priciples of Perlin noise, we build a VOP network that allows for shaping noise in many different ways. A foundation for the usage of noise in your setups.

Files

Previews only

AHTYA03 - Noisy VOPs

Comments

Nick Wood

Hugely interesting. I particularly enjoyed being exposed to the underlying principles that drive the turbulence parameter, and the exposure to the terms bias and gain. Sliders can always be wiggled until a result is found, but a clear visual understanding of a particular parameter makes all the difference. Better understanding, greater control, quicker results, more confidence... Nicely done.

Gaurav Gupta

this is great , understanding things to the core level and cost behind them.

Massimo Baita

Thank You very much, Manuel. You are a great teacher.

Yue Wu

Really helpful.

Patrick McAvena

Wow, such a clear and insightful presentation. Thank you!

Maury Rosenfeld

That was a great lecture. Very clear and complete.

André Gama

Infinite power of creation

Michael Trainor

Houdini 17.0 (Dec 18) - I"m wondering if the ramp option to show the ramp as the graph has been removed. I don't seem to have it. Could it be a setting I'm missing?

entagma

Hi Michael, "The Ramp Parameter" node has not changed. If you change the "Ramp Type" to "Spline Ramp (float)" you get a spline interface on the VOP. cheers mnu

Kieran

Brilliant. Thanks!

Patrick Vogel

Grandios. Mehr kann man nicht sagen!

Roger Mac

Wow! Pretty awesome.

Remo Balcells

Now I understand it well. Thank you!

Manuel Stein

Lots of interesting information. One thing that I noted is that there's no explanation in the helpfiles regarding what does each parameter in noise nodes do. And my question is how did you get to know what does each parameter exactly do? "Roughness" or "turbulence" for instance. Should I be looking somewhere else? I tried googling with no luck. Thanks in advance.