Damping rate expressed as the fraction of velocity bodies retain each second.
A value of 0.9 would mean that each body_'s velocity will drop 10% per second.
The default value is 1.0, meaning no damping is applied.
@note This damping value is different than those of cpDampedSpring and cpDampedRotarySpring.
Damping rate expressed as the fraction of velocity bodies retain each second. A value of 0.9 would mean that each body_'s velocity will drop 10% per second. The default value is 1.0, meaning no damping is applied. @note This damping value is different than those of cpDampedSpring and cpDampedRotarySpring.