PixelHistoConverter.cxx

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/*
   Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
#include "PixelConditionsData/PixelHistoConverter.h"
 
#include "StoreGate/StoreGateSvc.h"
#include "GaudiKernel/ISvcLocator.h"
 
#include "TAxis.h"
#include "TH1.h"
#include "TH2.h"
#include "TH3.h"
 
#include <iostream>
 
PixelHistoConverter::PixelHistoConverter()
= default;
 
StatusCode PixelHistoConverter::setHisto1D(const TH1* histo) {
 
  if (!histo) {
    return StatusCode::FAILURE;
  }
 
  if (!setAxis(m_xAxis, histo->GetXaxis())) {
    return StatusCode::FAILURE;
  }

  const std::size_t xSize = m_xAxis.nBins;
  m_content.resize(xSize);
 
  for (std::size_t x = 0; x < xSize; ++x) {
    m_content.at(x) = histo->GetBinContent(x+1);
  }
 
  return StatusCode::SUCCESS;
}
 
StatusCode PixelHistoConverter::setHisto2D(const TH2* histo) {
  if (!histo) {
    return StatusCode::FAILURE;
  }
 
  if (!setAxis(m_xAxis, histo->GetXaxis())) {
    return StatusCode::FAILURE;
  }
  if (!setAxis(m_yAxis, histo->GetYaxis())) {
    return StatusCode::FAILURE;
  }

  const std::size_t xSize = m_xAxis.nBins;
  const std::size_t ySize = m_yAxis.nBins;
  m_content.resize(xSize*ySize);
 
  for (std::size_t x = 0; x < xSize; ++x) {
    for (std::size_t y = 0; y < ySize; ++y) {
      const std::size_t position = x + y*xSize;
      m_content.at(position) = histo->GetBinContent(x+1,y+1);
    }
  }
 
  return StatusCode::SUCCESS;
}
 
StatusCode PixelHistoConverter::setHisto3D(const TH3* histo) {
  if (!histo) {
    return StatusCode::FAILURE;
  }
 
  if (!setAxis(m_xAxis, histo->GetXaxis())) {
    return StatusCode::FAILURE;
  }
  if (!setAxis(m_yAxis, histo->GetYaxis())) {
    return StatusCode::FAILURE;
  }
  if (!setAxis(m_zAxis, histo->GetZaxis())) {
    return StatusCode::FAILURE;
  }

  const std::size_t xSize = m_xAxis.nBins;
  const std::size_t ySize = m_yAxis.nBins;
  const std::size_t zSize = m_zAxis.nBins;
  m_content.resize(xSize*ySize*zSize);
 
  for (std::size_t x = 0; x < xSize; ++x) {
    for (std::size_t y = 0; y < ySize; ++y) {
      for (std::size_t z = 0; z < zSize; ++z) {
        const std::size_t position = x + xSize*(y + (ySize * z));
        m_content.at(position) = histo->GetBinContent(x+1,y+1,z+1);
      }
    }
  }
 
  return StatusCode::SUCCESS;
}
 
bool PixelHistoConverter::isFirstZ(const float value) const {
  return (getBinZ(value) == 0);
}
 
bool PixelHistoConverter::setAxis(Axis& axis, const TAxis* rootAxis) {
 
  if (!rootAxis) {
    return false;
  }
 
  axis.nBins = rootAxis->GetNbins();
  axis.min   = rootAxis->GetXmin();
  axis.max   = rootAxis->GetXmax();
 
  if (axis.nBins < 1) {
    return false;
  }

  const float width = rootAxis->GetBinWidth(1);
  for (std::size_t ibin = 2; ibin <= axis.nBins; ++ibin) {
    if (std::abs(rootAxis->GetBinWidth(ibin) - width) > 0.01*width) {
      return false;
    }
  }

  axis.width = 1.*axis.nBins/(axis.max - axis.min);
 
  return true;
}