setLimits method
Implementation
void setLimits(double lower, double upper) {
assert(lower <= upper);
if (lower != _lowerAngle || upper != _upperAngle) {
bodyA.setAwake(true);
bodyB.setAwake(true);
_impulse.z = 0.0;
_lowerAngle = lower;
_upperAngle = upper;
}
}