Works like a torsion spring + damper.
| restAngle | Relative angle between the bodies in degrees where the spring is at equilibrium. |
| stiffness | Stiffness of the spring. |
| damping | Amount of angular damping applied. |
| bodyB | The other body that the constraint attaches to. |
| maxForce | Maximum force the constraint is allowed to use. |
| errorBias | Rate that error (stretching of the constraint) is fixed. |
| maxForce | Maximum rate that constraint error is fixed. |