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advanced radiative transfer for astrophysics
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CellGeometry Class Reference

#include <CellGeometry.hpp>

Inheritance diagram for CellGeometry:
Inheritance graph
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Public Types

enum class  MassType : int { MassDensity , Mass , NumberDensity , Number }
 

Public Member Functions

MassType massType () const
 
- Public Member Functions inherited from ImportedGeometry
double density (Position bfr) const override
 
string filename () const
 
Position generatePosition () const override
 
bool importMetallicity () const
 
bool importTemperature () const
 
double maxTemperature () const
 
int numSites () const override
 
double SigmaX () const override
 
double SigmaY () const override
 
double SigmaZ () const override
 
Position sitePosition (int index) const override
 
string useColumns () const
 
- Public Member Functions inherited from GenGeometry
int dimension () const override
 
virtual double density (Position bfr) const =0
 
virtual int dimension () const =0
 
virtual Position generatePosition () const =0
 
virtual double SigmaX () const =0
 
virtual double SigmaY () const =0
 
virtual double SigmaZ () const =0
 
- Public Member Functions inherited from SimulationItem
template<class T >
T * find (bool setup=true) const
 
template<class T >
T * interface (int levels=-999999, bool setup=true) const
 
virtual string itemName () const
 
void setup ()
 
string typeAndName () const
 
- Public Member Functions inherited from Item
 Item (const Item &)=delete
 
virtual ~Item ()
 
void addChild (Item *child)
 
const vector< Item * > & children () const
 
virtual void clearItemListProperty (const PropertyDef *property)
 
void destroyChild (Item *child)
 
virtual bool getBoolProperty (const PropertyDef *property) const
 
virtual vector< double > getDoubleListProperty (const PropertyDef *property) const
 
virtual double getDoubleProperty (const PropertyDef *property) const
 
virtual string getEnumProperty (const PropertyDef *property) const
 
virtual int getIntProperty (const PropertyDef *property) const
 
virtual vector< Item * > getItemListProperty (const PropertyDef *property) const
 
virtual ItemgetItemProperty (const PropertyDef *property) const
 
virtual string getStringProperty (const PropertyDef *property) const
 
int getUtilityProperty (string name) const
 
virtual void insertIntoItemListProperty (const PropertyDef *property, int index, Item *item)
 
Itemoperator= (const Item &)=delete
 
Itemparent () const
 
virtual void removeFromItemListProperty (const PropertyDef *property, int index)
 
virtual void setBoolProperty (const PropertyDef *property, bool value)
 
virtual void setDoubleListProperty (const PropertyDef *property, vector< double > value)
 
virtual void setDoubleProperty (const PropertyDef *property, double value)
 
virtual void setEnumProperty (const PropertyDef *property, string value)
 
virtual void setIntProperty (const PropertyDef *property, int value)
 
virtual void setItemProperty (const PropertyDef *property, Item *item)
 
virtual void setStringProperty (const PropertyDef *property, string value)
 
void setUtilityProperty (string name, int value)
 
virtual string type () const
 
- Public Member Functions inherited from SiteListInterface
virtual ~SiteListInterface ()
 
virtual int numSites () const =0
 
virtual Position sitePosition (int index) const =0
 

Protected Member Functions

 CellGeometry ()
 
SnapshotcreateAndOpenSnapshot () override
 
- Protected Member Functions inherited from ImportedGeometry
 ImportedGeometry ()
 
 ~ImportedGeometry ()
 
virtual SnapshotcreateAndOpenSnapshot ()=0
 
void setupSelfAfter () override
 
- Protected Member Functions inherited from GenGeometry
 GenGeometry ()
 
- Protected Member Functions inherited from Geometry
 Geometry ()
 
Randomrandom () const
 
void setupSelfBefore () override
 
- Protected Member Functions inherited from SimulationItem
 SimulationItem ()
 
virtual bool offersInterface (const std::type_info &interfaceTypeInfo) const
 
virtual void setupSelfAfter ()
 
virtual void setupSelfBefore ()
 
- Protected Member Functions inherited from Item
 Item ()
 
- Protected Member Functions inherited from SiteListInterface
 SiteListInterface ()
 

Private Types

using BaseType = ImportedGeometry
 
using ItemType = CellGeometry
 

Private Attributes

MassType _massType
 

Friends

class ItemRegistry
 

Detailed Description

A CellGeometry instance represents a 3D geometry with a spatial density distribution described by a list of cuboidal cells lined up with the coordinate axes; refer to the CellSnapshot class for more information. The cell data is usually extracted from a cosmological simulation snapshot, and it must be provided in a column text file formatted as described below. The total mass in the geometry is normalized to unity after importing the data.

Refer to the description of the TextInFile class for information on overall formatting and on how to include header lines specifying the units for each column in the input file. In case the input file has no unit specifications, the default units mentioned below are used instead. The number of columns in the input file depends on the options configured by the user for this CellGeometry instance:

\[ x_\mathrm{min}\,(\mathrm{pc}) \quad y_\mathrm{min}\,(\mathrm{pc}) \quad z_\mathrm{min}\,(\mathrm{pc}) \quad x_\mathrm{max}\,(\mathrm{pc}) \quad y_\mathrm{max}\,(\mathrm{pc}) \quad z_\mathrm{max}\,(\mathrm{pc}) \quad \{\, \rho\,(\text{M}_\odot\,\text{pc}^{-3}) \;\;|\;\; M\,(\text{M}_\odot) \;\;|\;\; n\,(\text{cm}^{-3}) \;\;|\;\; N\,(1) \,\} \quad [Z\,(1)] \quad [T\,(\mathrm{K})] \]

The first six columns specify the coordinates of the lower-left and upper-right corners of the cell. Depending on the value of the massType option, the seventh column lists the average mass density \(\rho\), the integrated mass \(M\), the average number density \(n\), or the integrated number density \(N\) for the cell. The precise units for this field are irrelevant because the total mass in the geometry will be normalized to unity after importing the data. However, the import procedure still insists on knowing the units.

If the importMetallicity option is enabled, the next column specifies a "metallicity" fraction, which in this context is simply multiplied with the mass/density column to obtain the actual mass/density of the cell. If the importTemperature option is enabled, the next column specifies a temperature. If this temperature is higher than the maximum configured temperature, the mass and density of the cell are set to zero, regardless of the mass or density specified in the seventh column. If the importTemperature option is disabled, or the maximum temperature value is set to zero, such a cutoff is not applied.

Member Enumeration Documentation

◆ MassType

enum class CellGeometry::MassType : int
strong

The enumeration type indicating the type of mass quantity to be imported.

MassDensity : "mass density" .

Mass : "mass (volume-integrated mass density)" .

NumberDensity : "number density" .

Number : "number (volume-integrated number density)" .

Constructor & Destructor Documentation

◆ CellGeometry()

CellGeometry::CellGeometry ( )
inlineprotected

Default constructor for concrete Item subclass CellGeometry : "a geometry imported from cuboidal cell data" .

Member Function Documentation

◆ createAndOpenSnapshot()

Snapshot * CellGeometry::createAndOpenSnapshot ( )
overrideprotectedvirtual

This function constructs a new CellSnapshot object, calls its open() function, configures it to import a mass or density column, and finally returns a pointer to the object. Ownership of the Snapshot object is transferred to the caller.

Implements ImportedGeometry.

◆ massType()

CellGeometry::massType ( ) const
inline

This function returns the value of the discoverable MassType enumeration property massType : "the type of mass quantity to be imported" .

The default value for this property is given by the conditional value expression "MassDensity" .


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