InstrumentRayTracer.h

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2010 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
 
#include "MantidGeometry/DllConfig.h"
#include "MantidGeometry/Objects/BoundingBox.h"
#include "MantidGeometry/Objects/Track.h"
#include <boost/unordered_map.hpp>
#include <deque>
#include <list>
#include <mutex>
 
namespace Mantid {
namespace Kernel {
class V3D;
}
namespace Geometry {
class ComponentInfo;
class DetectorInfo;
struct Link;
class Track;
using Links = Track::LType;
 
class MANTID_GEOMETRY_DLL InstrumentRayTracer {
public:
  InstrumentRayTracer(ComponentInfo const &componentInfo, DetectorInfo const &detectorInfo);
  void trace(const Kernel::V3D &dir) const;
  void traceFromSample(const Kernel::V3D &dir) const;
  Links getResults() const;
 
  size_t getDetectorResult() const;
  const ComponentInfo &componentInfo() const;
  const DetectorInfo &detectorInfo() const;
 
private:
  void fireRay(Track &testRay) const;
  void testIntersectionWithShape(size_t const index, Track &testRay) const;
  void testIntersectionWithGrid(size_t const index, Track &testRay) const;
 
  ComponentInfo const &m_componentInfo;
  DetectorInfo const &m_detectorInfo;
  mutable Track m_resultsTrack;
  mutable boost::unordered_map<size_t, BoundingBox> m_boxCache;
  mutable std::mutex m_mutex;
};
} // namespace Geometry
} // namespace Mantid