The SKIRT project
advanced radiative transfer for astrophysics
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WavelengthDistribution Class Referenceabstract

#include <WavelengthDistribution.hpp>

Inheritance diagram for WavelengthDistribution:
Inheritance graph
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Public Member Functions

virtual double generateWavelength () const =0
 
virtual double probability (double wavelength) 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
 

Protected Member Functions

 WavelengthDistribution ()
 
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 ()
 

Private Types

using BaseType = SimulationItem
 
using ItemType = WavelengthDistribution
 

Private Attributes

Random_random
 

Friends

class ItemRegistry
 

Detailed Description

An instance of a WavelengthDistribution subclass represents a plain wavelength probability distribution. It can used, for example, to define a weighting scheme for the wavelengths assigned to photon packets launched from a source. This abstract base class just defines an interface that must be implemented by each subclass. There are two key operations: drawing a random wavelength from the probability distribution, and returning the probability for a given wavelength.

The wavelength probability distribution is automatically normalized to unity over the wavelength range of the associated source (obtained through the SourceWavelengthRangeInterface), intersected with the intrinsic wavelength range of the distribution. Consequently, the random wavelengths returned by the generateWavelength() function will always fall inside the intersected range, and the value returned by the probability() function can be nonzero only within that same range.

Constructor & Destructor Documentation

◆ WavelengthDistribution()

WavelengthDistribution::WavelengthDistribution ( )
inlineprotected

Default constructor for abstract Item subclass WavelengthDistribution : "a wavelength probability distribution" .

Member Function Documentation

◆ generateWavelength()

virtual double WavelengthDistribution::generateWavelength ( ) const
pure virtual

This function draws a random wavelength from the wavelength distribution. The returned value will always fall inside the intersection of the intrinsic and external wavelength ranges.

Implemented in DefaultWavelengthDistribution, DiscreteWavelengthDistribution, LinWavelengthDistribution, LogWavelengthDistribution, OligoWavelengthDistribution, and TabulatedWavelengthDistribution.

◆ probability()

virtual double WavelengthDistribution::probability ( double  wavelength) const
pure virtual

This function returns the probability of the distribution at the given wavelength, or zero if the wavelength is out of range (the intersection of the intrinsic and external wavelength ranges).

Implemented in DefaultWavelengthDistribution, DiscreteWavelengthDistribution, LinWavelengthDistribution, LogWavelengthDistribution, OligoWavelengthDistribution, and TabulatedWavelengthDistribution.

◆ random()

Random * WavelengthDistribution::random ( ) const
inlineprotected

This function returns the simulation's random generator as a service to subclasses.

◆ setupSelfBefore()

void WavelengthDistribution::setupSelfBefore ( )
overrideprotectedvirtual

This function caches the simulation's random generator for use by subclasses.

Reimplemented from SimulationItem.


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