LocalTransformationGeo.h

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#ifndef LARCOREALG_GEOMETRY_LOCALTRANSFORMATIONGEO_H
#define LARCOREALG_GEOMETRY_LOCALTRANSFORMATIONGEO_H

// LArSoft libraries
#include "larcorealg/Geometry/GeoVectorLocalTransformation.h"
#include "larcorealg/Geometry/LocalTransformation.h"
#include "larcoreobj/SimpleTypesAndConstants/geo_vectors.h" // geo::Point_t...

// C/C++ standard libraries
#include <type_traits> // std::is_same
#include <utility>     // std::move()

namespace geo {

  template <typename StoredMatrix,
            typename LocalPoint = geo::Point_t,
            typename LocalVector = geo::Vector_t>
  class LocalTransformationGeo : public geo::LocalTransformation<StoredMatrix> {
    using Base_t = geo::LocalTransformation<StoredMatrix>;

  public:
    using GlobalPoint_t = geo::Point_t;   
    using GlobalVector_t = geo::Vector_t; 
    using LocalPoint_t = LocalPoint;      
    using LocalVector_t = LocalVector;    

    using typename Base_t::TransformationMatrix_t;


    LocalTransformationGeo(TransformationMatrix_t const& matrix) : Base_t(matrix) {}
    LocalTransformationGeo(TransformationMatrix_t&& matrix) : Base_t(std::move(matrix)) {}

    LocalTransformationGeo(std::vector<TGeoNode const*> const& path, size_t depth)
      : Base_t(path, depth)
    {}

    GlobalPoint_t toWorldCoords(LocalPoint_t const& local) const
    {
      return Base_t::template LocalToWorld<GlobalPoint_t>(local);
    }

    GlobalVector_t toWorldCoords(LocalVector_t const& local) const
    {
      return Base_t::template LocalToWorldVect<GlobalVector_t>(local);
    }

    LocalPoint_t toLocalCoords(GlobalPoint_t const& world) const
    {
      return Base_t::template WorldToLocal<LocalPoint_t>(world);
    }

    LocalVector_t toLocalCoords(GlobalVector_t const& world) const
    {
      return Base_t::template WorldToLocalVect<LocalVector_t>(world);
    }

    static_assert(!std::is_same<LocalPoint_t, LocalVector_t>(),
                  "Vector and point types must be distinct");

  }; // class LocalTransformationGeo<>

} // namespace geo

#endif // LARCOREALG_GEOMETRY_LOCALTRANSFORMATIONGEO_H