The SKIRT project
advanced radiative transfer for astrophysics
AxPowerLawRedistributeGeometryDecorator Class Reference

#include <AxPowerLawRedistributeGeometryDecorator.hpp>

Inheritance diagram for AxPowerLawRedistributeGeometryDecorator:

Public Member Functions

int dimension () const override
double minR () const
double minZ () const
double RExponent () const
double zExponent () const
Public Member Functions inherited from RedistributeGeometryDecorator
double density (Position bfr) const override
Position generatePosition () const override
Geometrygeometry () const
double SigmaX () const override
double SigmaY () const override
double SigmaZ () const override
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

Protected Member Functions

 AxPowerLawRedistributeGeometryDecorator ()
double maxWeight () const override
void setupSelfAfter () override
double weight (Position bfr) const override
Protected Member Functions inherited from RedistributeGeometryDecorator
 RedistributeGeometryDecorator ()
void setupSelfAfter () override
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
Protected Member Functions inherited from Item
 Item ()

Private Types

using BaseType
using ItemType

Private Attributes

double _minR
double _minZ
const double & _pR
const double & _pz
const double & _R0
double _RExponent
const double & _z0
double _zExponent

Friends

class ItemRegistry

Detailed Description

The AxPowerLawRedistributeGeometryDecorator class implements a decorator that adjusts another geometry by multiplying the density with an axial power law weight function

\[ \rho'(R, \phi, z) = n \rho(R, \phi, z) R^{-p_R}z^{-p_z}. \]

There are also two clipping regions, one around the z-axis determined by a radius \(R_0\) and one above and below the xy-plane determined by \(z=\pm z_0\), where the density is made zero to cut out the singularity. If an exponent is chosen to be zero, then the clipping region for that exponent will not be prompted during the Q&A.

When an item of this type is used, the names provided by the conditional value expression "Dimension2" are inserted into the name sets used for evaluating Boolean expressions.

Constructor & Destructor Documentation

◆ AxPowerLawRedistributeGeometryDecorator()

AxPowerLawRedistributeGeometryDecorator::AxPowerLawRedistributeGeometryDecorator ( )
inlineprotected

Default constructor for concrete Item subclass AxPowerLawRedistributeGeometryDecorator: "a decorator that redistributes another geometry with an axial power law".

Member Function Documentation

◆ dimension()

int AxPowerLawRedistributeGeometryDecorator::dimension ( ) const
overridevirtual

The dimension of the geometry after applying the decorator can only change spherical geometries into axially symmetric, otherwise it doesn't change the dimension.

Implements Geometry.

◆ maxWeight()

double AxPowerLawRedistributeGeometryDecorator::maxWeight ( ) const
overrideprotectedvirtual

The max weight is used in the rejection method and is equal to \(R_0^{-p_R}z_0^{-p_z}\).

Implements RedistributeGeometryDecorator.

◆ minR()

double AxPowerLawRedistributeGeometryDecorator::minR ( ) const
inline

This function returns the value of the discoverable double property minR: "the radius of the clipping cylinder around the z-axis".

This property represents a physical quantity of type "length".

The minimum value for this property is "[0 pc".

This property is relevant only if the Boolean expression "RExponent" evaluates to true after replacing the names by true or false depending on their presence.

◆ minZ()

double AxPowerLawRedistributeGeometryDecorator::minZ ( ) const
inline

This function returns the value of the discoverable double property minZ: "half the height of the clipping region around the xy-plane".

This property represents a physical quantity of type "length".

The minimum value for this property is "[0 pc".

This property is relevant only if the Boolean expression "zExponent" evaluates to true after replacing the names by true or false depending on their presence.

◆ RExponent()

double AxPowerLawRedistributeGeometryDecorator::RExponent ( ) const
inline

This function returns the value of the discoverable double property RExponent: "the negative power of the radial part of the weight function".

The minimum value for this property is "[0".

◆ setupSelfAfter()

void AxPowerLawRedistributeGeometryDecorator::setupSelfAfter ( )
overrideprotectedvirtual

This function checks if not both the \(R\) and \(z\) exponents are 0.

Reimplemented from SimulationItem.

◆ weight()

double AxPowerLawRedistributeGeometryDecorator::weight ( Position bfr) const
overrideprotectedvirtual

The weight function is the power law: \(R^{-p_R}z^{-p_z}\).

Implements RedistributeGeometryDecorator.

◆ zExponent()

double AxPowerLawRedistributeGeometryDecorator::zExponent ( ) const
inline

This function returns the value of the discoverable double property zExponent: "the negative power of the vertical part of the weight function".

The minimum value for this property is "[0".


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