GenericApproachDescriptor.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2016-2018 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"
#include "Acts/Geometry/ApproachDescriptor.hpp"
#include "Acts/Geometry/GeometryContext.hpp"
#include "Acts/Surfaces/BoundaryCheck.hpp"
#include "Acts/Surfaces/Surface.hpp"
#include "Acts/Utilities/Helpers.hpp"
#include "Acts/Utilities/Intersection.hpp"

#include <memory>
#include <utility>
#include <vector>

namespace Acts {

class Layer;
class Surface;

class GenericApproachDescriptor : public ApproachDescriptor {
 public:
  GenericApproachDescriptor(
      std::vector<std::shared_ptr<const Surface>> aSurfaces)
      : ApproachDescriptor(),
        m_surfaces(std::move(aSurfaces)),
        m_surfaceCache() {
    m_surfaceCache = unpack_shared_vector(m_surfaces);
  }

  ~GenericApproachDescriptor() override = default;

  void registerLayer(const Layer& lay) override;

  SurfaceIntersection approachSurface(const GeometryContext& gctx,
                                      const Vector3& position,
                                      const Vector3& direction,
                                      const BoundaryCheck& bcheck,
                                      double pLimit, double oLimit,
                                      double tolerance) const override;

  const std::vector<const Surface*>& containedSurfaces() const override;

  std::vector<const Surface*>& containedSurfaces() override;

 private:
  std::vector<std::shared_ptr<const Surface>> m_surfaces;

  std::vector<const Surface*> m_surfaceCache;
};

}  // namespace Acts