rbd forces question

[logix1390]

Hello all,

I am trying to go a little more in depth with the rbd force nodes in houdini. I am working with the magnet force in particular. 

I have a constraint network with random constraints set to a strength of -1 which means it will never break. However, when I use the magnet force on this constraint network it breaks everything and does not respect the strength of -1.

Why is this ? How can I use the magnet force to respect the attributes I set to the constraints?

I will attach my scene file for anyone that wants to take a look.

Thank you

forces_question.hipnc

[FlorianEggers]

Set the second wrangle to run over primitives instead of points, then it'll work.

Also, in your glue in DOPs, set the strength to 1. It acts as a multiplier to your prim attribute.

[logix1390]

@FlorianEggers Thank you ! that works.

I noticed there is actually a sop called "glue cluster" that does the exact same that i was doing in the wrangle. It seems to set the attribute correctly but it does not actually work in dops. Is there a way to get this node to work properly ?

forces_question2.hipnc

[FlorianEggers]

In DOPs in your glue constraint relationship, make sure the Data name matches the constraint_name attribute exactly (case sensitive!).

In your scene, the glue cluster sets the name to uppercase "Glue", the glue constraint relationship has it's data name set to lowercase "glue". Make sure they both match exactly

Edited December 3, 2018 by FlorianEggers

[logix1390]

ahh . didnt realize it created a new name . thank you.