lar::example::details Namespace Reference

Implementation detail namespace (content is not documented) More...

Classes
struct	PointTraits_t
struct	PositionExtractorFromArray
	Base for PositionExtractor on random-access containers. More...

Typedefs
template<typename Point >
using	ExtractCoordType_t = typename details::PointTraits_t< Point >::Coord_t
	type of Point coordinate More...

Functions
template<typename Point >
auto	extractPositionX (Point const &point)
template<typename Point >
auto	extractPositionY (Point const &point)
template<typename Point >
auto	extractPositionZ (Point const &point)
template<typename Coord >
std::array< size_t, 3 >	diceVolume (CoordRangeCells< Coord > const &rangeX, CoordRangeCells< Coord > const &rangeY, CoordRangeCells< Coord > const &rangeZ)
	Returns the dimensions of a grid diced with the specified size. More...
template<typename ROOTobj >
std::unique_ptr< ROOTobj >	readROOTobject (TDirectory *sourceDir, std::string name)

Detailed Description

Implementation detail namespace (content is not documented)

Typedef Documentation

template<typename Point >

using lar::example::details::ExtractCoordType_t = typedef typename details::PointTraits_t<Point>::Coord_t

type of Point coordinate

Definition at line 95 of file SpacePartition.h.

Function Documentation

template<typename Coord >

std::array<size_t, 3> lar::example::details::diceVolume	(	CoordRangeCells< Coord > const &	rangeX,
		CoordRangeCells< Coord > const &	rangeY,
		CoordRangeCells< Coord > const &	rangeZ
	)

Returns the dimensions of a grid diced with the specified size.

Definition at line 356 of file SpacePartition.h.

        {
          return {{
            size_t(std::ceil(rangeX.size() / rangeX.cellSize)),
            size_t(std::ceil(rangeY.size() / rangeY.cellSize)),
            size_t(std::ceil(rangeZ.size() / rangeZ.cellSize))
            }};
        } // diceVolume()

template<typename Point >

auto lar::example::details::extractPositionX

(

Point const &

point

)

Definition at line 303 of file SpacePartition.h.

        { return PositionExtractor<Point>::x(point); }

template<typename Point >

auto lar::example::details::extractPositionY

(

Point const &

point

)

Definition at line 306 of file SpacePartition.h.

        { return PositionExtractor<Point>::y(point); }

template<typename Point >

auto lar::example::details::extractPositionZ

(

Point const &

point

)

Definition at line 309 of file SpacePartition.h.

        { return PositionExtractor<Point>::z(point); }

template<typename ROOTobj >

std::unique_ptr< ROOTobj > lar::example::details::readROOTobject	(	TDirectory *	sourceDir,
		std::string	name
	)

Reads an object from a ROOT directory, checking its type

Exceptions

cet::exception

if no object or wrong type

Definition at line 284 of file ShowerCalibrationGaloreFromPID.h.

{
   if (!sourceDir) {
      throw cet::exception("readROOTobject")
        << "Invalid source ROOT directory\n";
   }

   // read the object and immediately claim its ownership
   TObject* pObj = sourceDir->Get(name.c_str());
   if (!pObj) {
      throw cet::exception("readROOTobject")
        << "No object '" << name << "' in ROOT directory '"
        << sourceDir->GetPath() << "'\n";
   }

   if (std::is_base_of<TH1, std::decay_t<ROOTobj>>::value)
      static_cast<TH1*>(pObj)->SetDirectory(nullptr);
//   if (std::is_base_of<TTree, std::decay_t<ROOTobj>>::value)
//      static_cast<TTree*>(pObj)->SetDirectory(nullptr);
   std::unique_ptr<TObject> obj(pObj);

   // use ROOT to investigate whether this is the right type
   if (!obj->InheritsFrom(ROOTobj::Class())) {
      throw cet::exception("readROOTobject")
        << "Object '" << name << "' in ROOT directory '"
        << sourceDir->GetPath() << "' is a " << obj->IsA()->GetName()
        << ", not derived from " << ROOTobj::Class()->GetName() << "\n";
   }

   // now that we are sure obj is of the right type, we transfer ownership
   // from obj to the return value (that here is implicitly constructed)
   return std::unique_ptr<ROOTobj>(static_cast<ROOTobj*>(obj.release()));
} // lar::example::details::readROOTobject()