DicomDetectorConstruction.hh

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#ifndef DicomDetectorConstruction_h
#define DicomDetectorConstruction_h 1

#include "globals.hh"
#include "G4VUserDetectorConstruction.hh"
#include "DicomPhantomZSliceHeader.hh"

class G4Material;
class G4Box;
class G4LogicalVolume;

//*******************************************************
//*******************************************************

class DicomDetectorConstruction : public G4VUserDetectorConstruction
{
public:

  DicomDetectorConstruction();
  ~DicomDetectorConstruction();

  G4VPhysicalVolume* Construct();
  // trigger the construction of the geometry

protected:
  void InitialisationOfMaterials();
  // create the original materials

  void ReadPhantomData();
  // read the DICOM files describing the phantom

  void ReadPhantomDataFile(const G4String& fname);
  // read one of the DICOM files describing the phantom (usually one per Z slice). Build a DicomPhantomZSliceHeader for each file

  void MergeZSliceHeaders();
  // merge the slice headers of all the files

  G4Material* BuildMaterialWithChangingDensity( const G4Material* origMate, float density, G4String newMateName );
  // build a new material if the density of the voxel is different to the other voxels

  void ConstructPhantomContainer();
  virtual void ConstructPhantom() = 0;
  // construct the phantom volumes. This method should be implemented for each of the derived classes

  void SetScorer(G4LogicalVolume* voxel_logic);

protected:
  G4Material* fAir;

  // World ...
  G4Box* fWorld_solid;
  G4LogicalVolume* fWorld_logic;
  G4VPhysicalVolume* fWorld_phys;

  G4Box* fContainer_solid;
  G4LogicalVolume* fContainer_logic;
  G4VPhysicalVolume* fContainer_phys;

  G4int fNoFiles; // number of DICOM files
  std::vector<G4Material*> fOriginalMaterials;  // list of original materials 
  std::vector<G4Material*> fMaterials;  // list of new materials created to distinguish different density voxels that have the same original materials
  size_t* fMateIDs; // index of material of each voxel
 //unsigned int* fMateIDs; // index of material of each voxel

  std::map<G4int,G4double> fDensityDiffs; // Density difference to distinguish material for each original material (by index)
 
  std::vector<DicomPhantomZSliceHeader*> fZSliceHeaders; // list of z slice header (one per DICOM files)
  DicomPhantomZSliceHeader* fZSliceHeaderMerged; // z slice header resulted from merging all z slice headers

  G4int fNVoxelX, fNVoxelY, fNVoxelZ;
  G4double fVoxelHalfDimX, fVoxelHalfDimY, fVoxelHalfDimZ;
};

#endif