VEX Isn't Scary - Part 4: Channel Functions

Welcome to 'VEX Isn't Scary'! This is a continuation of the 'Houdini Isn't Scary' series and covers how to code in Houdini and use that code to drive your 3D work. This was only available on Patreon but was brought onto the public domain by SideFX. Now, it is available here on our channel so that you can easily access it.

In part 4, we go over Channel Functions. Channel Functions are special functions that Attribute Wrangle recognizes. You can create UI tools such as sliders, text-fields and ramps (to name a few). You will understand the common way to create a Channel Function as well as how to edit the parameter interface to better reflect the type of data you need. We also further explore another global variable - @Time.

[mattiamerenda]

In Houdini 19.5 the ramp is clamped to 1 on the input, if you go past the first 24frames nothingh will happen, try this :


float posblend=chramp('position', blend);

[baotruong]

How it's cool man! Thank you for your dedication

[white_sky_]

this start to get beyond my comprehension, but I can see the power of Houdini.

[giuseppemilana]

Man this series you are this what people need to get Houdini understandable,

[fracteller]

I literally got goosbumps, thank you for this series!

[khalilboss]

That Channel function is the coolest thing I've seen in houdini so far
Thank you so much Sensei!

[texasFilmLock]

I can't believe these videos don't have more views. This is such an amazing series! Thank you so much for your work.

[TheOneWhoAnimates]

this series keeps on getting interesting !!

[ugnesmalskyte]

Wooow, simply loving every possibility of this!!! Thank you soo much. Each day I get more and more hooked

[Eyes]

Thank you for this series it's so helpful! +1 for the cute cat

[Drew-bqpo]

Again, these tutorials are awesome. You do more than just show how to do it. The explanations of why make these true tutorials. It would be great if at some point you could go over UVs. The tutorials out there are lacking at best. For example, there are none that explain how to take different islands on a single object and apply a different material to each one, which is something I'm really struggling with at the moment. In Maya, it's simple but in Houdini, it seems very convoluted. Just a suggestion. ;) Thanks again!!

[bigxjgq]

amazing plz Keep going for more explanations and videos

[arindam]

please make more tutorials... it really helping a lot

[spiritkittykat]

I almost died from the result after adding something as simple as the ramps.

[alifashf]

Man this is hands down the best houdini tutorial for beginners. Btw, by any chance could you share the specs of your machine or a recommended laptop to work with houdini that smooth?!

[lustr]

What settings did you make for the final renders, otherwise I can't even get close to such a result (renders)?

[omarbarakat]

created that splash-like effect. please help :)

[klausberfelde-jeye]

Very helpfull tutorials👍
Looks like something has changed ...Time 14:34 ff the timebased function don´t work in Houdini 20.0.625 it only executes once in the first 24 Frames.

[nykkoja]

in my case ramp does not reset, the value keeps its final state till infinity, is it something to set up or is it different in different houdini version?

[laloquiroz]

For me in min 14:44, I had to add a % 1.0 to the @Time to loop the circle after it hits 1 second.