/data/refman/pasoursint/CMSSW_6_1_2_SLHC4_patch1/src/Fireworks/ParticleFlow/plugins/FWPFTrackRPZProxyBuilder.cc

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#include "FWPFTrackRPZProxyBuilder.h"

//______________________________________________________________________________
void
FWPFTrackRPZProxyBuilder::build( const reco::Track &iData, unsigned int iIndex, TEveElement &oItemHolder, const FWViewContext *vc )
{
   FWPFTrackUtils *utils = new FWPFTrackUtils();
   TEveTrack *trk = utils->setupTrack( iData );
   TEvePointSet *ps = utils->getCollisionMarkers( trk );
   TEvePointSet *rzps = new TEvePointSet();
   setupAddElement( trk, &oItemHolder );

   Float_t *trackPoints = trk->GetP();
   unsigned int last = ( trk->GetN() - 1 ) * 3;
   float y = trackPoints[last+1];
   float z = trackPoints[last+2];

   // Reposition any points that have been translated in RhoZ
   for( signed int i = 0; i < ps->GetN(); ++i )
   {
      // WORKS BUT DOESN'T HANDLE ALL SCENARIOS.....
      Float_t a,b,c;
      ps->GetPoint( i, a, b, c );

      if( y < 0 && b > 0 )
         b *= -1;
      else if( y > 0 && b < 0 )
         b *= -1;

      if( z < 0 && c > 0 )
         c *= -1;
      else if( z > 0 && c < 0 )
         c *= -1;

      rzps->SetNextPoint( a, b, c );
   }

   if( rzps->GetN() != 0 )
      setupAddElement( rzps, &oItemHolder );
   else
      delete rzps;

   delete ps;
   delete utils;
}

//______________________________________________________________________________
REGISTER_FWPROXYBUILDER( FWPFTrackRPZProxyBuilder, reco::Track, "PF Tracks", FWViewType::kRhoPhiPFBit  | FWViewType::kRhoZBit );