Rigid rope with heavy weight and 2 pin constraints

[dignifiedweb]

This is a basic issue, common to all realtime physics engines: high mass ratios reduce convergence speed (i.e. make things stretchy and rubber like). Basic rules to avoid stretchiness:

- Use tether constraints when possible. (that is, when at least 1 particle in your rope is fixed). This will ensure the rope does not exceed its rest length under any circumstance. See: http://obi.virtualmethodstudio.com/tutor...aints.html

- If tethers are not applicable in your case, decrease the rope resolution to the minimum acceptable. (less particles=faster convergence). If needed, increase "smoothness" for better mesh rendering at low resolutions. See: http://obi.virtualmethodstudio.com/tutor...eters.html

- Increase distance and pin constraint iteration count in the ObiSolver. This decreases performance, but increases convergence speed (i.e, reduces stretchiness).

- If all else fails, reduce the mass ratio: make the particles heavier, or the attached rigidbodies lighter.

cheers,

Thank you, this helps a lot! I will report back here if I have further details to provide. I am betting the above suggestions will help me, appreciate it!