TutorialVertexFinderAlgorithm.cpp

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// This file is part of the Acts project.
//
// Copyright (C) 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/.

#include "ActsExamples/Vertexing/TutorialVertexFinderAlgorithm.hpp"

#include <stdexcept>

#include "VertexingHelpers.hpp"

namespace ActsExamples {
struct AlgorithmContext;
}  // namespace ActsExamples

ActsExamples::TutorialVertexFinderAlgorithm::TutorialVertexFinderAlgorithm(
    const Config& cfg, Acts::Logging::Level lvl)
    : ActsExamples::IAlgorithm("TutorialVertexFinder", lvl), m_cfg(cfg) {
  if (m_cfg.inputTrackParameters.empty() == m_cfg.inputTrajectories.empty()) {
    throw std::invalid_argument(
        "You have to either provide track parameters or trajectories");
  }
  if (m_cfg.outputProtoVertices.empty()) {
    throw std::invalid_argument("Missing output proto vertices collection");
  }

  m_inputTrackParameters.maybeInitialize(m_cfg.inputTrackParameters);
  m_inputTrajectories.maybeInitialize(m_cfg.inputTrajectories);
  m_outputProtoVertices.initialize(m_cfg.outputProtoVertices);
}

ActsExamples::ProcessCode ActsExamples::TutorialVertexFinderAlgorithm::execute(
    const ActsExamples::AlgorithmContext& ctx) const {
  // retrieve input tracks and convert into the expected format
  const auto& inputTrackParameters = m_inputTrackParameters(ctx);
  const auto& inputTrackPointers =
      makeTrackParametersPointerContainer(inputTrackParameters);
  //* Do not change the code above this line *//

  //* Remove following 2 lines. Only here to suppress unused variable errors *//
  (void)(inputTrackParameters);
  (void)(inputTrackPointers);

  /*****   Note: This is a skeleton file to be filled with tutorial code  *****/
  /*****   provided in the Acts Docs - Vertexing section under the link:  *****/
  /* https://acts.readthedocs.io/en/latest/howto/setup_and_run_vertexing.html */
  /*** or in the Acts repository in  docs/howto/setup_and_run_vertexing.md  ***/

  /*     Add the tutorial example code here    */
  /*  For the full tutorial code please refer  */
  /* to AdaptiveMultiVertexFinderAlgorithm.cpp */

  //* Do not change the code below this line *//
  return ActsExamples::ProcessCode::SUCCESS;
}