ModifySlices.cxx

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
 
#include "ModifySlices.h"
 
namespace LVL1BS {
 
// Return new triggered slice offset
 
int ModifySlices::peak(const int oldPeak, const int oldSlices,
                                          const int newSlices)
{
  return oldPeak + (newSlices - oldSlices)/2;
}
 
// Return modified data vector<int>
 
void ModifySlices::data(const std::vector<int>& oldVec,
                              std::vector<int>& newVec, const int newSlices)
{
  const int oldSlices = oldVec.size();
  const int offset = (newSlices - oldSlices)/2;
  newVec.resize(newSlices);
  for (int sl = 0; sl < newSlices; ++sl) {
    const int oldSl = sl - offset;
    if      (oldSl < 0)          newVec[sl] = oldVec[0];
    else if (oldSl >= oldSlices) newVec[sl] = oldVec[oldSlices - 1];
    else                         newVec[sl] = oldVec[oldSl];
  }
}
 
// Return modified data vector<unsigned int>
 
void ModifySlices::data(const std::vector<unsigned int>& oldVec,
                              std::vector<unsigned int>& newVec,
                  const int newSlices)
{
  const int oldSlices = oldVec.size();
  const int offset = (newSlices - oldSlices)/2;
  newVec.resize(newSlices);
  for (int sl = 0; sl < newSlices; ++sl) {
    const int oldSl = sl - offset;
    if      (oldSl < 0)          newVec[sl] = oldVec[0];
    else if (oldSl >= oldSlices) newVec[sl] = oldVec[oldSlices - 1];
    else                         newVec[sl] = oldVec[oldSl];
  }
}
 
} // end namespace