Gabriele Cosmo
118 lines
3.9 KiB
C++
118 lines
3.9 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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#include "G4LEPTSElossDistr.hh"
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#include "G4LEPTSDistribution.hh"
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G4LEPTSElossDistr::G4LEPTSElossDistr(std::string file) {
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fileName = file;
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ReadFile();
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}
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void G4LEPTSElossDistr::ReadFile()
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{
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theNDistributions = 0;
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FILE * fp;
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if ((fp=fopen(fileName.c_str(), "r"))==nullptr){
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//G4cout << "Error reading " << fileName << G4endl;
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NoBins = 0;
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bFileFound = false;
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return;
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}
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bFileFound = true;
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// G4cout << "Read Eloss Distro (" << fileName << ") " << G4endl;
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G4int nEnergies;
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G4int nAngles;
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G4int nData;
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(void) fscanf(fp,"%i \n",&nEnergies);
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for( G4int ie = 0; ie < nEnergies; ie++ ){
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float energySep;
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(void) fscanf(fp,"%f \n",&energySep);
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(void) fscanf(fp,"%i \n",&nAngles);
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for( G4int ia = 0; ia < nAngles; ia++ ){
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float angleSep;
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(void) fscanf(fp,"%f \n",&angleSep);
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auto dist = new G4LEPTSDistribution();
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theNDistributions ++;
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mddist angleDist;
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angleDist[angleSep] = dist;
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theDistributions[energySep] = angleDist;
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(void) fscanf(fp,"%i \n",&nData);
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if( dist->ReadFile( fp, nData ) ) {
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G4Exception("G4LEPTSElossDistr",
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"",
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FatalException,
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("End of file found while reading file"+ fileName).c_str());
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}
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}
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}
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fclose(fp);
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}
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G4double G4LEPTSElossDistr::Sample( G4double eMin, G4double eMax)
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{
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// Sample Energy from Cumulative distr. G4interval [eMin, eMax]
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if( eMin > eMax) return 0.0;
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//Get the distribution to do the sampling
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G4LEPTSDistribution* distr = nullptr;
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if( theNDistributions == 1 ){
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distr = (*( (*(theDistributions.begin())).second ).begin()).second;
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} else{
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mdmddist::const_iterator itedd;
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for( itedd = theDistributions.begin(); itedd != theDistributions.end(); itedd++ ){
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G4double energySep = (*itedd).first;
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if( eMax < energySep ) {
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//tt if( eMax <= energySep ) {
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mddist dist1 = (*itedd).second;
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mddist::const_iterator ited;
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for( ited = dist1.begin(); ited != dist1.end(); ited++ ){
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G4double angleSep = (*ited).first;
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if( 1 < angleSep ) {
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distr = (*ited).second;
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break;
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}
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}
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break;
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}
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}
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}
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// G4cout << " LEPTSElossDistr::Sample( " << distr << " NDIST " << theNDistributions << G4endl; //GDEB
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return distr->Sample(eMin, eMax);
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}
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