private void TransformKeys(Matrix4x4 matrix, bool flipX, bool flipY)
 {
     if (m_RippleTime)
     {
         m_State.TransformRippleKeys(matrix, m_RippleTimeStart, m_RippleTimeEnd, flipX, true);
     }
     else
     {
         m_State.TransformSelectedKeys(matrix, flipX, flipY, true);
     }
 }