VFX Essentials - XYZDist & PrimUV Explained - Houdini Tutorial

This is a free lesson from my full course:
voxyde.gumroad.com/l/xgnego/
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voxyde.com/
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In this video I explain what the PrimUV and XYZDist functions do and how they operate. I also give a few examples of how you would use them. I use these workflows on a daily basis on probably 90% of my projects so I believe they are crucial to have in your toolset. Hope you enjoy.
0:00 - 0:20 : Intro
0:20 - 9:10 : PrimUV
9:10 - 17:53 : XYZDist

[@solo-moon]

my god this explanation is god tier, its like a 4.0GPA for explanation

[@voxyde]

Lol thank you!

[@yoolkimpapa]

World's best explanation video for primuv function I've ever watched. thanks

[@voxyde]

Thanks haha. I've banged my head so many times with it until I understood it, hope this video clarifies things for others :)

[@pavelbalagazov3647]

With this tutorial, I finally understood uvprim

[@vfxskull6208]

Man, this is so good!! Perfect explanations I hope to see more content like this soon Best, Alvaro

[@joantonio6331]

The more I learn about Houdini the more I love it

[@HOT3D2520]

Great Explanation . I have tried to understand it for along time but not 100% clear until now . Thank you so much. 👍🏼👍🏼👍🏼

[@ThienPaul-zs8os]

That is really good course, thank you so much.

[@kegsfx8603]

So well explained! Very helpful! =D

[@COOLSEMIS]

Thanks alot for all the Essentials tutorial! it's so helpful

[@chrisjohnstone6164]

really well explained -- thank you

[@voxyde]

You are welcome!

[@uzaykisi1863]

Perfect explanation, thank you

[@MathiasJ89]

Great explanation and use case example. Thanks :)

[@vynylPooh]

really great explanation! Thank you a lot!

[@travislrogers]

Beautiful explanation! Now I get it 😂 Thank you 🙏

[@Igrbessonov]

Thank you! Greatest explanation

[@OnkAnCa64]

Thanks for this demonstration

[@Oknto]

Great explanation!!!

[@pavelbalagazov3647]

Perfect explanations! Thx!!!!

[@axe_fx]

excellent lesson. thank you

[@i20010]

Thank you sir! Very helpful!

[@FaddyVFX]

That is great. Great video, i like it 😊

[@milosgalovic5583]

great explanation man, thanks for everything you do! however i have a bit of an issue when recreating this, the issue being on the second example when i do the xyzdist, it mostly returns the values on the edges of the geometry, almost none on the faces... can't find a solution anywhere

[@jannesopanen8032]

Hi! I have the same issue, did you find the problem?

[@andreanvfx3901]

Awesome explanation, but what if even my points are animated? lets say I animate my points on the x axis, and I want them to stick to the deforming sphere, how would you approach this?

[@VuPhamRainstorm]

power tutorial really explain the theory and applied

[@stevennelson4542]

amazing thanks!

[@RMAFIRE]

You are awesome!✔🔝

[@solo-moon]

can you just put primuv node and set the geo_handle to number 2 and drag the deforming geo to slot 3 at the first attribute wrangle

[@znbk5652]

i wish you also included "uvsample" as sometime i get confused which one to use primuv or uvsample..

[@kubolor1234]

Shoutouts Alexei

[@everydayhero3610]

I am a bit lazy to recreate this setup and test it myself, but at 16:30 can we instead plug the GEO to the third input and refer to it in the "vector pos" line?

[@voxyde]

Yes you can. But I separate the wrangles for efficiency's sake. The xyzdist wrangle will only run 1 frame, since the geometry is frozen ( so it only needs to compute 1 frame, because of the time shift that freezes the second input geo). When you update the position with the prim and uvw however, this needs to run every frame. If you were to use the third input on the same wrangle, the xyzdist function will have to recook every frame, and it will run a lil bit slower. Now I'm not talking huge performance hits here, but if you're working with high point counts and dense geometry, this can help speed things up quite a bit. But using the same wrangle for both functions will work the same

[@everydayhero3610]

@@voxyde I've never thought of this. Thank you for this tutorial and also this very helpful insight!

[@aboldmule]

@@voxyde Had the same thought as @EverydayHero. Thank you for clarifying this.

[@user-um4wm2dr2m]

Please can I have lessons on Cinema 4d program?

[@garrettcoolidge2038]

can i pay u, the VOP series is the best explained series I have ever seen

[@voxyde]

Hahaha thank you! Glad you found it useful

[@antoniopepe]

For millions particle in popvop what is the fastest to retrieve attribute xyzdist with primuv or pcopen with pc filter ? Someone told me of PGFIND that is for big number. Your tuts really greet and top notch info. I want to buy your last rock formation soon.

[@voxyde]

Hello, XYZDist with PrimUV is definitely faster than pcOpen. They both kind of do the same thing, but with PCOpen you will usually get a smoother result if you're doing a particle simulation. But xyzdist is definitely faster if you can get away with it!

[@antoniopepe]

@@voxyde top thanks. I had a feeling that it was. Thanks. keep it up.

[@johnli4006]

I finally understand this ahhahahahah