Vellum Constraint Features | John Lynch | H18 Masterclass

This masterclass will cover new Vellum constraint features in Houdini 18, some of which are workflow enhancements. This includes automatically computing mass and thickness based on density, making it easier to work with geometry of different resolutions. Normalizing stress computations over substeps, will save you the hassle of having to adjust threshold values when changing substeps. For the new constraint features, there are Stiffness Dropoff, Tangent Stiffness, Stitch to primitive location, Sliding for Stitch and Attach constraints, and ARAP constraints which are effective for simulating organic material/softbody and things that require good stretching and compression behaviour.
Download scene files here: sidefx.com/tutorials/vellum-constraint-features-john-lynch-h18-masterclass
INDEX
00:03:58 use autocomputation of mass+thickness
00:12:04 Normalize Stress Computations
00:17:14 Stiffness Dropoff with Stretch and Bend Constraints
00:21:41 Tangent Stiffness
00:27:26 Stitch Constraint Enhancements
00:32:32 Sliding Constraints
00:55:22 Triangle and Tetrahedral Stretch (ARAP) Constraints
01:11:01 ARAP Constraints (Shelf Tools)
01:17:41 Tetrahedral Stretch Constraints with Plasticity
01:20:35 ARAP Constraints for Organic Behaviour
01:22:44 Tetrahedral ARAP Constraints

[@thebeardedmen]

This is the only easy to access video on the entire internet that actually explains what units the stiffness dropoff uses.

[@varunaiyar6214]

John Lynch should host every Masterclass

[@affectreflect]

My stress is now normalized.Thanks Lynch.

[@voxyde]

Golden comment

[@edh615]

Such a great masterclass!!!

[@MortenKvale]

Thanks SideFX. MOAR H18 masterclasses pls!! :D

[@resilientpicture]

Incredible, Thanks

[@michaelgarcia7980]

super helpful information! does anyone know if theres an easy way to access the point attributes from the regular geometry in a node that operates on the constraint geometry, for instance, if I wanted to use a collision attribute like @hitnum or a @pprevious attribute to modify a constraint attribute like rest length from a vellum_constraints_property node?

[@lahiru3908]

Thank you💙💙

[@heinblues]

Is it possible to get some info on the setup from 1:33:44 ?

[@ivanramosdemelo6031]

Great Canadian 3D animation software!

[@krishnaavrilcg1136]

I agree ;)

[@bombomb_001]

greatest 3d animation tool~

[@user-td9be4xu2m]

Where to download these examples? :-)

[@Atimo133]

it says in the Description :)