Hello,

I've made a simple trampoline like effect with Vellum. I'm dropping a pighead onto a Struts-Cloth and letting it bounce of it. Now im trying to get the pighead to bounce of a bit more from the struts but more importantly I'm trying to make the pig head not flip over when bouncing of. Is there a way to limit its angular velocity and how do I generally art direct vellum sims a bit better? I've attached a sample of the scene.

Video [gyazo.com]

Any help is very appreciated. Thank you.

Hi, it relatively simple, what you need to understand first is that vellum don't see object as a whole, they are rather a bunch of point connected to each other via constraint, there isn't a 'angular velocity' per object per say.

what you want to do is basically limit the ability of the point to move in the X and Z direction, essentially constraining them to only move in the Y axis (up).
you can dive into your vellum solver and add a 'pop wrangle' and damp the velocity 'v' by multiplying it by a smaller value. connect the node to the force output.


this will effectively limit the rotation of the object.

ps: you might want to only damp the head by using group, or the effect will apply to the whole simulation.

Thank you, didn't know it was just that simple. Yeah I passed down a point group to only effect the pighead.