/// <param name="argWorld"></param>
/// <param name="def"></param>
protected internal WeldJoint(IWorldPool argWorld, WeldJointDef def)
: base(argWorld, def)
{
m_localAnchorA = new Vec2(def.localAnchorA);
m_localAnchorB = new Vec2(def.localAnchorB);
m_referenceAngle = def.referenceAngle;
m_frequencyHz = def.frequencyHz;
m_dampingRatio = def.dampingRatio;
m_impulse = new Vec3();
m_impulse.setZero();
}
