public FSWheelJoint(FSBody bA, FSBody bB, FVector2 anchor, FVector2 axis) : base(bA, bB) { JointType = JointType.Wheel; LocalAnchorA = bA.GetLocalPoint(anchor); LocalAnchorB = bB.GetLocalPoint(anchor); m_localXAxisA = bA.GetLocalVector(axis); m_localYAxisA = MathUtils.Cross(1.0f, m_localXAxisA); }