Gabriele Cosmo
288 lines
8.4 KiB
Plaintext
288 lines
8.4 KiB
Plaintext
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4PhysicsVector.icc 74730 2013-10-21 08:54:46Z gcosmo $
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//
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//
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//---------------------------------------------------------------
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// GEANT 4 class source file
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//
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// G4PhysicsVector.icc
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//
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// Description:
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// A physics vector which has values of energy-loss, cross-section,
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// and other physics values of a particle in matter in a given
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// range of the energy, momentum, etc.
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// This class serves as the base class for a vector having various
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// energy scale, for example like 'log', 'linear', 'free', etc.
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//
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//---------------------------------------------------------------
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extern G4GLOB_DLL G4ThreadLocal G4Allocator<G4PhysicsVector> *fpPVAllocator;
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//---------------------------------------------------------------
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inline
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void* G4PhysicsVector::operator new(size_t)
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{
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if (!fpPVAllocator) fpPVAllocator = new G4Allocator<G4PhysicsVector>;
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return (void*)fpPVAllocator->MallocSingle();
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}
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//---------------------------------------------------------------
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inline
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void G4PhysicsVector::operator delete(void* aVector)
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{
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fpPVAllocator->FreeSingle((G4PhysicsVector*)aVector);
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::Value(G4double theEnergy) const
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{
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size_t idx=0;
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return Value(theEnergy, idx);
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::operator[](const size_t binNumber) const
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{
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return dataVector[binNumber];
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::operator()(const size_t binNumber) const
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{
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return dataVector[binNumber];
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::Energy(const size_t binNumber) const
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{
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return binVector[binNumber];
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::GetMaxEnergy() const
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{
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return edgeMax;
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}
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//---------------------------------------------------------------
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inline
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size_t G4PhysicsVector::GetVectorLength() const
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{
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return numberOfNodes;
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::GetValue(G4double theEnergy, G4bool&) const
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{
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size_t idx=0;
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return Value(theEnergy, idx);
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}
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//------------------------------------------------
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inline
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G4double G4PhysicsVector::LinearInterpolation(size_t idx, G4double e) const
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{
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// Linear interpolation is used to get the value. Before this method
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// is called it is ensured that the energy is inside the bin
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// 0 < idx < numberOfNodes-1
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return dataVector[idx] +
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( dataVector[idx + 1]-dataVector[idx] ) * (e - binVector[idx])
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/( binVector[idx + 1]-binVector[idx] );
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::SplineInterpolation(size_t idx, G4double e) const
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{
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// Spline interpolation is used to get the value. Before this method
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// is called it is ensured that the energy is inside the bin
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// 0 < idx < numberOfNodes-1
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// check bin value
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G4double x1 = binVector[idx];
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G4double x2 = binVector[idx + 1];
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G4double delta = x2 - x1;
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G4double a = (x2 - e)/delta;
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G4double b = (e - x1)/delta;
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// Final evaluation of cubic spline polynomial for return
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G4double y1 = dataVector[idx];
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G4double y2 = dataVector[idx + 1];
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G4double res = a*y1 + b*y2 +
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( (a*a*a - a)*secDerivative[idx] +
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(b*b*b - b)*secDerivative[idx + 1] )*delta*delta/6.0;
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return res;
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}
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//---------------------------------------------------------------
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inline
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G4double G4PhysicsVector::Interpolation(size_t idx, G4double e) const
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{
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G4double res;
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if(useSpline) { res = SplineInterpolation(idx, e); }
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else { res = LinearInterpolation(idx, e); }
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return res;
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}
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//---------------------------------------------------------------
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inline
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void G4PhysicsVector::PutValue(size_t binNumber, G4double theValue)
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{
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dataVector[binNumber] = theValue;
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}
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//---------------------------------------------------------------
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inline
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G4bool G4PhysicsVector::IsFilledVectorExist() const
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{
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G4bool status=false;
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if(numberOfNodes > 0) { status=true; }
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return status;
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}
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//---------------------------------------------------------------
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inline
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G4PhysicsVectorType G4PhysicsVector::GetType() const
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{
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return type;
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}
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//---------------------------------------------------------------
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// Flag useSpline is "true" only if second derivatives are filled
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inline
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void G4PhysicsVector::SetSpline(G4bool val)
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{
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if(val) {
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if(0 == secDerivative.size() && 0 < dataVector.size()) {
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FillSecondDerivatives();
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}
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} else {
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useSpline = false;
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secDerivative.clear();
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}
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}
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//---------------------------------------------------------------
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inline
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void G4PhysicsVector::SetVerboseLevel(G4int value)
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{
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verboseLevel = value;
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}
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//---------------------------------------------------------------
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inline
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G4int G4PhysicsVector::GetVerboseLevel(G4int)
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{
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return verboseLevel;
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}
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//---------------------------------------------------------------
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inline
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size_t G4PhysicsVector::FindBinLocation(G4double theEnergy) const
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{
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size_t bin;
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if(type == T_G4PhysicsLogVector) {
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bin = size_t(G4Log(theEnergy)/dBin - baseBin);
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if(bin + 2 > numberOfNodes) { bin = numberOfNodes - 2; }
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else if(bin > 0 && theEnergy < binVector[bin]) { --bin; }
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else if(bin + 2 < numberOfNodes && theEnergy > binVector[bin+1])
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{ ++bin; }
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} else if(type == T_G4PhysicsLinearVector) {
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bin = size_t( theEnergy/dBin - baseBin );
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if(bin + 2 > numberOfNodes) { bin = numberOfNodes - 2; }
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else if(bin > 0 && theEnergy < binVector[bin]) { --bin; }
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else if(bin + 2 < numberOfNodes && theEnergy > binVector[bin+1])
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{ ++bin; }
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} else {
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bin = 0;
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size_t bin2;
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size_t bin3 = numberOfNodes - 1;
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while (bin != bin3 - 1) {
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bin2 = bin + (bin3 - bin + 1)/2;
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if (theEnergy > binVector[bin2]) { bin = bin2; }
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else { bin3 = bin2; }
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}
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/*
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// V.I. Usage of this algorithm provide identical results
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// no CPU advantage is observed in EM tests
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// if new validation information will be known this code may be used
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G4PVDataVector::const_iterator it =
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std::lower_bound(binVector.begin(), binVector.end(), theEnergy);
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bin = it - binVector.begin() - 1;
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*/
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}
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return bin;
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}
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//---------------------------------------------------------------
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inline size_t G4PhysicsVector::FindBin(G4double e, size_t idx) const
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{
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size_t id = idx;
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if(e < binVector[1]) {
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id = 0;
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} else if(e >= binVector[numberOfNodes-2]) {
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id = numberOfNodes - 2;
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} else if(idx >= numberOfNodes || e < binVector[idx] || e > binVector[idx+1]) {
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id = FindBinLocation(e);
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}
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return id;
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}
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//---------------------------------------------------------------
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