Gabriele Cosmo
159 lines
4.0 KiB
C++
159 lines
4.0 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4LPhysicsFreeVector.hh,v 2.2 1998/07/13 16:55:45 urbi Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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//
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// ------------------------------------------------------------------
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//
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// Class G4LPhysicsFreeVector -- header file
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//
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// Derived from base class G4PhysicsVector
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// This is a free vector for Low Energy Physics cross section data.
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// The class name includes an "L" to distinguish it from other groups
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// who may wish to implement a free vector in a different way.
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// A subdivision method is used to find the energy|momentum bin.
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//
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// F.W. Jones, TRIUMF, 04-JUN-96
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//
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// 10-JUL-96 FWJ: adapted to changes in G4PhysicsVector.
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//
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// 27-MAR-97 FWJ: first version for Alpha release
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// 20-JUN-97 FWJ: added comment re GetValue(): no longer virtual
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//
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#ifndef G4LPhysicsFreeVector_h
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#define G4LPhysicsFreeVector_h 1
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#include "G4PhysicsVector.hh"
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class G4LPhysicsFreeVector : public G4PhysicsVector
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{
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public:
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G4LPhysicsFreeVector();
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G4LPhysicsFreeVector(size_t nbin, G4double binmin, G4double binmax);
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~G4LPhysicsFreeVector();
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// G4PhysicsVector has PutValue() but it is inconvenient.
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// Want to simultaneously fill the bin and data vectors.
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inline
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void PutValues(size_t binNumber, G4double binValue, G4double dataValue)
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{
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binVector(binNumber) = binValue;
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dataVector(binNumber) = dataValue;
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}
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// Note that theEnergy could be energy, momentum, or whatever.
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inline
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G4double GetValue(G4double theEnergy, G4bool& isOutRange);
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inline
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void SetVerboseLevel(G4int value)
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{
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verboseLevel = value;
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}
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inline
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G4int GetVerboseLevel(G4int)
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{
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return verboseLevel;
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}
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inline
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G4double GetLastEnergy()
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{
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return lastEnergy;
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}
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inline
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size_t GetLastBin()
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{
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return lastBin;
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}
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void DumpValues();
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private:
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G4int verboseLevel;
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// Pure virtual in G4PhysicsVector
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inline
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size_t FindBinLocation(G4double theEnergy) const;
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};
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// Note: GetValue() is no longer virtual in the parent class
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// G4PhysicsVector, so at present the following function cannot
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// be called through a base class pointer.
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inline
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G4double
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G4LPhysicsFreeVector::GetValue(G4double theEnergy, G4bool& isOutRange)
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{
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G4double returnValue;
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// verboseLevel = 2;
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if (theEnergy < edgeMin) {
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isOutRange = true;
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if (verboseLevel > 1) G4cout << "G4LPhysicsFreeVector::GetValue " <<
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theEnergy << " " << dataVector(0) << " " << isOutRange << endl;
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returnValue = dataVector(0);
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}
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else if (theEnergy > edgeMax) {
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isOutRange = true;
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if (verboseLevel > 1) G4cout << "G4LPhysicsFreeVector::GetValue " <<
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theEnergy << " " << dataVector(numberOfBin - 1) << " " <<
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isOutRange << endl;
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returnValue = dataVector(numberOfBin - 1);
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}
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else {
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isOutRange = false;
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G4int n = FindBinLocation(theEnergy);
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G4double dsde = (dataVector(n + 1) - dataVector(n))/
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(binVector(n + 1) - binVector(n));
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if (verboseLevel > 1) G4cout << "G4LPhysicsFreeVector::GetValue " <<
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theEnergy << " " << dataVector(n) + (theEnergy - binVector(n))*dsde <<
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" " << isOutRange << endl;
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returnValue = dataVector(n) + (theEnergy - binVector(n))*dsde;
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}
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return returnValue;
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}
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inline
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size_t
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G4LPhysicsFreeVector::FindBinLocation(G4double theEnergy) const
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{
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G4int n1 = 0;
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G4int n2 = numberOfBin/2;
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G4int n3 = numberOfBin - 1;
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while (n1 != n3 - 1) {
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if (theEnergy > binVector(n2))
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n1 = n2;
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else
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n3 = n2;
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n2 = n1 + (n3 - n1 + 1)/2;
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}
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if (verboseLevel > 1) G4cout <<
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"G4LPhysicsFreeVector::FindBinLocation: returning " << n1 << endl;
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return (size_t)n1;
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}
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#endif
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