Gabriele Cosmo
146 lines
5.2 KiB
C++
146 lines
5.2 KiB
C++
//
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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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// G4PhysicsOrderedFreeVector class implementation
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//
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// Author: Juliet Armstrong (TRIUMF), 13 August 1996
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// Revisions:
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// - 11.11.2000, H.Kurashige: use STL vector for dataVector and binVector
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// - 19.06.2009, V.Ivanchenko: removed hidden bin
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// --------------------------------------------------------------------
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#include "G4PhysicsOrderedFreeVector.hh"
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// --------------------------------------------------------------------
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G4PhysicsOrderedFreeVector::G4PhysicsOrderedFreeVector()
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: G4PhysicsVector()
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{
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type = T_G4PhysicsOrderedFreeVector;
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}
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// --------------------------------------------------------------------
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G4PhysicsOrderedFreeVector::G4PhysicsOrderedFreeVector(G4double* Energies,
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G4double* Values,
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std::size_t VectorLength)
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: G4PhysicsVector()
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{
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type = T_G4PhysicsOrderedFreeVector;
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dataVector.reserve(VectorLength);
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binVector.reserve(VectorLength);
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for(std::size_t i = 0; i < VectorLength; ++i)
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{
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InsertValues(Energies[i], Values[i]);
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}
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}
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// --------------------------------------------------------------------
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G4PhysicsOrderedFreeVector::G4PhysicsOrderedFreeVector(
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const std::vector<G4double>& Energies, const std::vector<G4double>& Values)
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: G4PhysicsVector()
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{
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if(Energies.size() != Values.size())
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{
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G4ExceptionDescription ed;
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ed << "The sizes of the two std::vector arguments must be the same";
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G4Exception("G4PhysicsOrderedFreeVector::G4PhysicsOrderedFreeVector()",
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"glob04", FatalException, ed);
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}
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type = T_G4PhysicsOrderedFreeVector;
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dataVector.reserve(Energies.size());
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binVector.reserve(Energies.size());
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for(std::size_t i = 0; i < Energies.size(); ++i)
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{
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InsertValues(Energies[i], Values[i]);
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}
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}
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// --------------------------------------------------------------------
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G4PhysicsOrderedFreeVector::~G4PhysicsOrderedFreeVector() {}
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// --------------------------------------------------------------------
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void G4PhysicsOrderedFreeVector::InsertValues(G4double energy, G4double value)
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{
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auto binLoc = std::lower_bound(binVector.cbegin(), binVector.cend(), energy);
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std::size_t binIdx = binLoc - binVector.cbegin(); // Iterator difference!
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auto dataLoc = dataVector.cbegin() + binIdx;
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binVector.insert(binLoc, energy);
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dataVector.insert(dataLoc, value);
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++numberOfNodes;
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edgeMin = binVector.front();
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edgeMax = binVector.back();
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}
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// --------------------------------------------------------------------
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G4double G4PhysicsOrderedFreeVector::GetEnergy(G4double aValue)
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{
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G4double e;
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if(aValue <= GetMinValue())
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{
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e = edgeMin;
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}
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else if(aValue >= GetMaxValue())
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{
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e = edgeMax;
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}
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else
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{
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std::size_t closestBin = FindValueBinLocation(aValue);
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e = LinearInterpolationOfEnergy(aValue, closestBin);
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}
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return e;
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}
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// --------------------------------------------------------------------
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std::size_t G4PhysicsOrderedFreeVector::FindValueBinLocation(G4double aValue)
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{
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std::size_t bin =
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std::lower_bound(dataVector.cbegin(), dataVector.cend(), aValue) -
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dataVector.cbegin() - 1;
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bin = std::min(bin, numberOfNodes - 2);
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return bin;
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}
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// --------------------------------------------------------------------
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G4double G4PhysicsOrderedFreeVector::LinearInterpolationOfEnergy(
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G4double aValue, std::size_t bin)
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{
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G4double res = binVector[bin];
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G4double del = dataVector[bin + 1] - dataVector[bin];
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if(del > 0.0)
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{
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res += (aValue - dataVector[bin]) * (binVector[bin + 1] - res) / del;
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}
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return res;
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}
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