Definition at line 209 of file TruncatedPyramid.cc.
Referenced by TruncatedPyramid::createCorners(), L1ExtraParticleMapProd::evaluateForwardRapidityGap(), and TruncatedPyramid::localCornersReflection().
{ return Pt3D ( -p.x(), p.y(), p.z() ) ; }