PhysX rope (thread)

Hi all!




In our project we use PhysX engine.

I created a rope using an array of spheres and joints.




Task #1: Tie the thread into a knot;

Taks#2: Pass the thread through the rings;




Problems:

1. When I try to pass the thread through the second ring, my thread can fall out from first ring, because joint cannot to fix the distance between actors;

2. Thread cannot be tied because joints are unstable;

3. When I move the thread with large speed, joints become unstable too.




Please help.




Thanks in advance!








Thanks in advance!