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// $Id: G4SandiaTable.hh 75603 2013-11-04 13:15:47Z gcosmo $

// class description
//
// This class is an interface to G4StaticSandiaData.
// it provides - Sandia coeff for an element, given its Z
//             - sandia coeff for a material, given a pointer to it
//

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
//
// History:
//
// 10.06.97 created. V. Grichine
// 18.11.98 simplified public interface; new methods for materials.  mma
// 30.01.01 major bug in the computation of AoverAvo and in the units (/g!)
//          in GetSandiaCofPerAtom(). mma
// 03.04.01 fnulcof[4] added; returned if energy < emin
// 05.03.04 V.Grichine, new methods for old sorting algorithm for PAI model
// 21.21.13 V.Ivanchenko, changed signature of methods, reduced number of 
//                        static variables, methods
//
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....

#ifndef G4SANDIATABLE_HH
#define G4SANDIATABLE_HH

#include <assert.h>

#include "G4OrderedTable.hh"      
#include "G4ios.hh"
#include "globals.hh"
#include <vector>

#include <CLHEP/Units/PhysicalConstants.h>

class G4Material;
// class G4MaterialCutsCouple;

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....

class G4SandiaTable
{
public:  // with description

  G4SandiaTable(G4Material*);	         
	         
  ~G4SandiaTable();

  //main computation per atom:
  void GetSandiaCofPerAtom(G4int Z, G4double energy, std::vector<G4double>& coeff);
  static G4double GetZtoA(G4int Z);

  //per volume of a material:
  G4int GetMatNbOfIntervals();
  G4double  GetSandiaCofForMaterial(G4int,G4int);
  G4double  GetSandiaMatTable(G4int,G4int);
  const G4double* GetSandiaCofForMaterial(G4double energy);

  G4double  GetSandiaCofForMaterialPAI(G4int,G4int);
  G4double  GetSandiaMatTablePAI(G4int,G4int);
  const G4double* GetSandiaCofForMaterialPAI(G4double energy);
  G4OrderedTable* GetSandiaMatrixPAI();

  inline void SetVerbose(G4int ver) { fVerbose = ver; };

public:  // without description

  G4SandiaTable(__void__&);
  // Fake default constructor for usage restricted to direct object
  // persistency for clients requiring preallocation of memory for
  // persistifiable objects.

private:

  void ComputeMatSandiaMatrix();
  void ComputeMatSandiaMatrixPAI();

  // methods per atom
  G4int     GetNbOfIntervals(G4int Z);
  G4double  GetSandiaPerAtom(G4int Z, G4int, G4int);
  G4double  GetIonizationPot(G4int Z);

  // static members of the class
  static const G4int      fNumberOfElements;
  static const G4int      fIntervalLimit;
  static const G4int      fNumberOfIntervals;  
  static const G4int      fH2OlowerInt;

  static const G4double   fSandiaTable[981][5];
  static const G4double   fH2OlowerI1[23][5];
  static const G4int      fNbOfIntervals[101];
  static const G4double   fZtoAratio[101];
  static const G4double   fIonizationPotentials[101];
  static const G4double   funitc[5];
  static const G4double   fnulcof[4];
               
  // computed once
  static G4int            fCumulInterval[101];

  // used at initialisation
  std::vector<G4double>   fSandiaCofPerAtom;
  
  // members of the class
  G4Material*     fMaterial;
  G4int           fMatNbOfIntervals;
  G4OrderedTable* fMatSandiaMatrix;
  G4OrderedTable* fMatSandiaMatrixPAI;
  		   
/////////////////////////////////////////////////////////////////////
//
// Methods for implementation of PAI model
//
/////////////////////////////////////////////////////////////////////

public:  // without description

  G4SandiaTable(G4int);	 
        
  G4SandiaTable();

  void Initialize(G4Material*);	         
  // void Initialize(G4MaterialCutsCouple*);	         
  void Initialize(G4int);	         


  void SandiaSwap(G4double** da, G4int i, G4int j);

  void SandiaSort(G4double** da, G4int sz);

  G4int SandiaIntervals(G4int Z[], G4int el);

  G4int SandiaMixing(G4int Z[], const G4double* fractionW,
		     G4int el, G4int mi);

  G4double GetPhotoAbsorpCof(G4int i , G4int j) const;

  G4int GetMaxInterval() const; 

  G4double** GetPointerToCof(); 

  G4bool GetLowerI1(){return fLowerI1;};
  void SetLowerI1(G4bool flag){fLowerI1=flag;};

private:

  void ComputeMatTable();

  // copy constructor and hide assignment operator
  G4SandiaTable(G4SandiaTable &);
  G4SandiaTable & operator=(const G4SandiaTable &right);

  // data members for PAI model

  G4double** fPhotoAbsorptionCof;  // SandiaTable  for mixture

  G4int fMaxInterval ;
  G4int fVerbose;
  G4bool fLowerI1;  
};
    
#endif