evgen::LightSource::MaterialPointFilter Class Reference

Filters a point according to the material at that point. More...

Public Member Functions
	MaterialPointFilter (geo::GeometryCore const &geom, std::set< std::string > const &materialNames)
	Constructor: sets up the filter configuration. More...
	~MaterialPointFilter ()
bool	accept (geo::Point_t const &point)
	Returns whether the specified point can be accepted. More...
bool	operator() (geo::Point_t const &point)

Private Member Functions
TGeoMaterial const *	materialAt (geo::Point_t const &point)
	Returns a pointer to the material of the volume at specified point. More...
TGeoMaterial const *	findMaterial (std::string const &name) const
	Returns a pointer to the material with the specified name. More...

Private Attributes
TGeoManager *	fManager = nullptr
	ROOT geometry manager. More...
TGeoNavigator *	fNavigator = nullptr
	Our own ROOT geometry navigator. More...
std::set< std::string > const &	fMaterials
	Names of materials to select. More...

Detailed Description

Filters a point according to the material at that point.

Definition at line 138 of file LightSource_module.cc.

Constructor & Destructor Documentation

evgen::LightSource::MaterialPointFilter::MaterialPointFilter	(	geo::GeometryCore const &	geom,
		std::set< std::string > const &	materialNames
	)

Constructor: sets up the filter configuration.

Definition at line 581 of file LightSource_module.cc.

    : fManager(geom.ROOTGeoManager())
    , fNavigator(fManager->AddNavigator())
    , fMaterials(materialNames)
  {
    assert(fManager);
    assert(fNavigator);
  }

evgen::LightSource::MaterialPointFilter::~MaterialPointFilter

(

)

Definition at line 592 of file LightSource_module.cc.

  {
    fManager->RemoveNavigator(fNavigator); // this deletes the navigator
    fNavigator = nullptr;
  } // LightSource::MaterialPointFilter::~MaterialPointFilter()

Member Function Documentation

bool evgen::LightSource::MaterialPointFilter::accept

(

geo::Point_t const &

point

)

Returns whether the specified point can be accepted.

Definition at line 608 of file LightSource_module.cc.

  {
    if (fMaterials.empty()) return true;
    TGeoMaterial const* material = materialAt(point);
    MF_LOG_TRACE("LightSource") << "Material at " << point << ": "
                                << (material ? material->GetName() : "not found");
    return material ? (fMaterials.count(material->GetName()) > 0) : false;
  } // LightSource::MaterialPointFilter::accept()

TGeoMaterial const* evgen::LightSource::MaterialPointFilter::findMaterial ( std::string const &  name ) const

private

Returns a pointer to the material with the specified name.

TGeoMaterial const * evgen::LightSource::MaterialPointFilter::materialAt ( geo::Point_t const &  point )

private

Returns a pointer to the material of the volume at specified point.

Definition at line 600 of file LightSource_module.cc.

  {
    TGeoNode const* node = fNavigator->FindNode(point.X(), point.Y(), point.Z());
    return node ? node->GetVolume()->GetMaterial() : nullptr;
  } // LightSource::MaterialPointFilter::materialAt()

bool evgen::LightSource::MaterialPointFilter::operator() ( geo::Point_t const &  point )

inline

Definition at line 150 of file LightSource_module.cc.

      {
        return accept(point);
      }

Member Data Documentation

TGeoManager* evgen::LightSource::MaterialPointFilter::fManager = nullptr

private

ROOT geometry manager.

Definition at line 157 of file LightSource_module.cc.

std::set<std::string> const& evgen::LightSource::MaterialPointFilter::fMaterials

private

Names of materials to select.

Definition at line 161 of file LightSource_module.cc.

TGeoNavigator* evgen::LightSource::MaterialPointFilter::fNavigator = nullptr

private

Our own ROOT geometry navigator.

Definition at line 158 of file LightSource_module.cc.

---

The documentation for this class was generated from the following file:

• larsim/larsim/EventGenerator/LightSource_module.cc