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// $Id: PhotInGapParameterisation.cc,v 1.5 2006/06/29 16:25:15 gunter Exp $
// GEANT4 tag $Name:  $
//

//#define debug

#include "PhotInGapParameterisation.hh"

PhotInGapParameterisation::PhotInGapParameterisation()
:numberOfSlabs(PhotInNOfSlabs),gapMaterial(0),hyTot(1.),hzLay(1.),sampFract(.5) {}

PhotInGapParameterisation::~PhotInGapParameterisation() {}

void PhotInGapParameterisation::ComputeTransformation(const G4int copyNo,
                                                      G4VPhysicalVolume* physVol) const
{
  G4double halfZ = hzLay*sampFract;     // half thichness of a slab of active part of layer
  G4double halfY = hyTot/numberOfSlabs; // half width of each slab after the subdivision
  G4double Zposition= halfZ - hzLay;    // Z-Position of all Active Gaps (rest is absorber)
  G4double Yposition= (copyNo+copyNo)*halfY - (hyTot-halfY); // Trans (y) position of slabs
#ifdef debug
  G4cout<<"PhotInGapParameterisation::ComputeTransformation: hZ="<<halfZ<<", hY="<<halfY
        <<", Z="<<Zposition<<", Y="<<Yposition<<G4endl;
#endif
  G4ThreeVector origin(0,Yposition,Zposition); // 3-vector for positioning of the slabs
  physVol->SetTranslation(origin);      // Positioning of the slab
  physVol->SetRotation(0);              // without rotation (which is possible!)
  physVol->SetName(PhotInSlabName);     // Name of the positioned slab
}

G4Material* PhotInGapParameterisation::
                      ComputeMaterial(const G4int, G4VPhysicalVolume*, const G4VTouchable*)
{
  return gapMaterial;                   // Material can be different for different slabs
}