public virtual void Write(PackFileSerializer s, BinaryWriterEx bw)
 {
     m_transforms.Write(s, bw);
     m_motor.Write(s, bw);
     m_friction.Write(s, bw);
     m_ang.Write(s, bw);
     m_lin0.Write(s, bw);
     m_lin1.Write(s, bw);
     m_linLimit.Write(s, bw);
     bw.WriteUInt64(0);
 }
 public virtual void Write(PackFileSerializer s, BinaryWriterEx bw)
 {
     m_rotations.Write(s, bw);
     m_ang.Write(s, bw);
 }