Vellum 101 - Locomotion Using Fiber Constraints
Added 2019-04-18 08:01:00 +0000 UTCAh! The classic FEM setup: Weirdly moving, crawling softbody creatures that make you shiver in slight disgust. Good news: It can be done in Vellum too! Same level of disgust but faster simulation times. Fibre constraint galore!
In this tutorial we'll build an organically moving worm like creature using H17.5's new Vellum fiber constraint.
EDIT: Updated the scene file to work in H18 too. Solidconform doesn't properly promote attributes in H18.348, so it needs to go in before setting up our friction and mass.
Comments
I know it's a four-year-old tutorial, but it finally helped me figure out something I'd been trying to do for YEARS! I found a Houdini 13 FEM worm locomotion hip file online, but it no longer works so I was trying to figure out a way to update it. Thanks so much! My result: https://vimeo.com/767454590?embedded=true&source=video_title&owner=68200660
Connor Bugni
2022-12-02 19:06:26 +0000 UTCHi Mo! How is it possible to keyframe the friction in order to control when the object moves forward and when it doesn't? (minute 9) Thanks
Ray J
2020-11-10 11:22:27 +0000 UTCHi there. I notice in Houdini 18.5, Vellum Configure Tetrahedral Softbody brings in different nodes, like tetrahedral stretch. It gives very different results at first, but by the end it looks quite good. What's the difference between this new node and tetrahedral volume? In other words, does it offer any advantages? Thank you!
Marvelous Media Engine
2020-10-27 14:52:42 +0000 UTCThanks for the notification, updated the file. Cheers, Mo
Entagma
2020-01-23 21:01:50 +0000 UTCHi Mo, in Houdini 18 this is not working at all even if i import the same project file not working only in 17.5 so if you can update it will be great. thank you
ata mutahar
2020-01-23 20:02:43 +0000 UTCHi Flavio, by "Proper UV" you mean UVs along the polywire? Or the whole individual strand having one single UV value? Cheers, Mo
Entagma
2019-06-19 20:32:19 +0000 UTCHi Mo, I was wondering if you have any tips on how to properly UV a vellum hair simulation, after you added it to a polywire for example.
Flavio M
2019-06-18 14:59:23 +0000 UTCThis is my favourite tutorial from your series. From now on Iam a porn director ;) https://vimeo.com/intelect/review/340930767/69bd07a210
Bartek Kalinowski
2019-06-07 15:22:04 +0000 UTCshift click first vellum connections and single click the next node down, BAM all three connect! :D also, i was trying to convince <a href="https://twitter.com/3Dmattias" rel="nofollow noopener" target="_blank">https://twitter.com/3Dmattias</a> to do vellum when he was messing about with his FEM tentacle fight animations, i think i can sway him now. :D
jeremy jozwik
2019-04-24 02:36:07 +0000 UTCThanks for the great tutorial! I tried to make it more disturbing: <a href="https://vimeo.com/331396692" rel="nofollow noopener" target="_blank">https://vimeo.com/331396692</a> Btw - how could I add some sort of a slime trail to the moving objects? Would be neat to make some of greasy slug things. Cheers!
Konsta Ryösä
2019-04-19 10:21:01 +0000 UTCHey Dzmitry, haha - love it! From the movement it looks like your worm thingy is trying harder than the slacker I implemented! :) Cheers, Mo
Entagma
2019-04-18 10:50:14 +0000 UTCHi Chris, yes it absolutely is - just use VOPs instead of VEX to drive the constraint & point attributes. VEX just is a bit more compact. You can do it! All the functions are there - just use the POPVOP instead of the POP Wrangle and the Geometry VOP instead of the Geo Wrangle. Cheers, Mo
Entagma
2019-04-18 10:47:36 +0000 UTCAwesome! I was trying to implement the same thing with Vellum a couple of weeks ago... the result was kinda... <a href="https://twitter.com/dmitrytabakerov/status/1111612804119834624" rel="nofollow noopener" target="_blank">https://twitter.com/dmitrytabakerov/status/1111612804119834624</a> And now you show much simpler way to do it (my setup was way complicated and there was a lot of VEX) Thank you!
Az Ainamart
2019-04-18 08:19:36 +0000 UTC... hi - is this possible not using VEX? - It would be most helpful to see how if it was ... cheers - C
Chris Johnstone
2019-04-18 08:17:18 +0000 UTC
