Rag-Doll Constraint Problem

[nathn123]

Hi all

I am trying to use bullet in a project where i need to be able to create ragdolls of bipeds, the issue i am having atm is that i don't really understand the constraints in bullet i know i need, hinge & cone twist constraints, but am not sure what the rbA & rbB transforms , that i need to pass in.

P.S Is using btMultibody usefully for my purpose

[albenchers]

study the ragdoll demo project, might help you figure some things out. it's no longer in the current bullet version, but you can find it in slightly older versions.

[anthrax11]

There is some very general info about constraints in the manual, but unfortunately the parameters are not described.
https://github.com/bulletphysics/bullet ... Manual.pdf

The benchmark demo currently includes code for ragdoll physics. It should be a good starting point.
https://github.com/bulletphysics/bullet ... rkDemo.cpp

[Basroil]

Try checking out the ODE manual (instead of bullet), they explain what a/b transforms are and how the constraints work. It's a bit stiffer reading than bullet's manual, but it can help bring you up to speed on general simulation terminology