DigitizationCell.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2016-2020 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include "Acts/Definitions/Algebra.hpp"
namespace Acts {

struct DigitizationCell final {
  // identification and data
  size_t channel0 = 0;
  size_t channel1 = 1;
  float data = 0.;

  // construct them
  DigitizationCell(size_t ch0, size_t ch1, float d = 0.)
      : channel0(ch0), channel1(ch1), data(d) {}

  void addCell(const DigitizationCell& dc, bool analogueReadout) {
    if (analogueReadout) {
      data += dc.data;
    }
  }

  double depositedEnergy() const { return data; }
};

struct DigitizationStep final {
  double stepLength{0.};   
  double driftLength{0.};  

  DigitizationCell stepCell;     
  Vector3 stepEntry;             
  Vector3 stepExit;              
  Vector2 stepReadoutProjected;  

  Vector2 stepCellCenter;        

  DigitizationStep()
      : stepCell(0, 0),
        stepEntry(0., 0., 0.),
        stepExit(0., 0., 0.),
        stepReadoutProjected(0., 0.),
        stepCellCenter(0., 0.) {}

  DigitizationStep(double sl, double dl, const DigitizationCell& dc,
                   const Vector3& entryP, const Vector3& exitP,
                   const Vector2& projectedPosition,
                   const Vector2& cellPosition)
      : stepLength(sl),
        driftLength(dl),
        stepCell(dc),
        stepEntry(entryP),
        stepExit(exitP),
        stepReadoutProjected(projectedPosition),
        stepCellCenter(cellPosition) {}
};

}  // namespace Acts