Isis::LunarLambert Class Reference

#include <LunarLambert.h>

Inheritance diagram for Isis::LunarLambert:

[legend]Collaboration diagram for Isis::LunarLambert:

[legend]List of all members.

Detailed Description

Lunar (Lommel-Seeliger)-Lambert law photometric model Derive model albedo for Lunar (Lommel-Seeliger)-Lambert law.

Phase independent and calculated analytically. Lommel-Seeliger law:

Reflectance=1/(1+cos(E)/cos(I))

Where: E=the angle between the observer and the slope normal I=the angle between the sun and the slope normal

Author:: 1999-01-08 Randy Kirk

For internal use only.

History:: 2007-07-31 Steven Lambright - Moved PhotoL from base PhotoModel class to this child.

Definition at line 48 of file LunarLambert.h.

Public Member Functions

LunarLambert (Pvl &pvl)

virtual ~LunarLambert ()

void SetPhotoL (const double l)

Set the Lunar-Lambert function weight.

double PhotoL () const

Return photometric L value.

std::string AlgorithmName () const

Return algorithm name found in Pvl file from constructor.

virtual void SetStandardConditions (bool standard)

Sets whether standard conditions will be used.

bool StandardConditions () const

Returns true if standard conditions are used, i.e., if SetStandardConditions(true) has been called. This is initialized to false in the constructor.

double PhtTopder (double phase, double incidence, double emission)

Obtain topographic derivative of an arbitrary photometric function.

double CalcSurfAlbedo (double pha, double inc, double ema)

Calculate the surface brightness using photometric angle information.

Static Public Member Functions

static double PhtAcos (double cosang)

Obtain arccosine of input value.

Protected Member Functions

virtual double PhotoModelAlgorithm (double phase, double incidence, double emission)

Private Attributes

double p_photoL

Member Function Documentation

std::string Isis::PhotoModel::AlgorithmName ( ) const [inline, inherited]

Return algorithm name found in Pvl file from constructor.

Definition at line 60 of file PhotoModel.h.
References Isis::PhotoModel::p_photoAlgorithmName.
Referenced by Isis::AtmosModel::GenerateAhTable().

double Isis::LunarLambert::PhotoL ( ) const [inline]

Return photometric L value.

Definition at line 56 of file LunarLambert.h.
References p_photoL.

double Isis::PhotoModel::PhtAcos ( double cosang ) [static, inherited]

Obtain arccosine of input value.
If the input value is outside of the valid range (-1 to 1), then obtain the arccosine of the closest valid value.

Parameters:

cosang input value to obtain arccosine of (in radians)

Returns:
double Arccosine of cosang, if valid.

History:
2008-11-05 Jeannie Walldren - This method was moved from NumericalMethods class.

Definition at line 135 of file PhotoModel.cpp.
Referenced by Isis::PhotoModel::PhtTopder().

double Isis::PhotoModel::PhtTopder ( double phase,

double incidence,

double emission

) [inherited]

Obtain topographic derivative of an arbitrary photometric function.

Parameters:

phase Input phase angle

incidence Input incidence angle

emission Input emission angle

Returns:
double Gradient

Definition at line 48 of file PhotoModel.cpp.
References Isis::PhotoModel::CalcSurfAlbedo(), e, Isis::PhotoModel::PhtAcos(), Isis::PI(), and z.
Referenced by Isis::TopoAtm::NormModelAlgorithm(), Isis::Topo::NormModelAlgorithm(), and Isis::Mixed::NormModelAlgorithm().

void Isis::LunarLambert::SetPhotoL ( const double l )

Set the Lunar-Lambert function weight.
This is used to govern the limb-darkening in the Lunar-Lambert photometric function. Values of the Lunar-Lambert weight generally fall in the range from 0.0 (Lambert function) to 1.0 (Lommel-Seeliger or "lunar" function). There are no limits on the value of this parameter, but values far outside the 0 to 1 range will not be very useful.

Parameters:

l Lunar-Lambert function weight, default is 1.0

Definition at line 25 of file LunarLambert.cpp.
References p_photoL.
Referenced by LunarLambert().

void Isis::PhotoModel::SetStandardConditions ( bool standard ) [virtual, inherited]

Sets whether standard conditions will be used.

Parameters:

standard True if standard conditions are used.

Reimplemented in Isis::HapkePhotoModel.
Definition at line 34 of file PhotoModel.cpp.
References Isis::PhotoModel::p_standardConditions.
Referenced by Isis::Topo::NormModelAlgorithm(), Isis::ShadeAtm::NormModelAlgorithm(), Isis::Shade::NormModelAlgorithm(), and Isis::HapkePhotoModel::SetStandardConditions().

bool Isis::PhotoModel::StandardConditions ( ) const [inline, inherited]

Returns true if standard conditions are used, i.e., if SetStandardConditions(true) has been called. This is initialized to false in the constructor.

Definition at line 64 of file PhotoModel.h.
References Isis::PhotoModel::p_standardConditions.

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

src/base/objs/LunarLambert/LunarLambert.h
src/base/objs/LunarLambert/LunarLambert.cpp


Public Member Functions
	LunarLambert (Pvl &pvl)
virtual	~LunarLambert ()
void	SetPhotoL (const double l)
	Set the Lunar-Lambert function weight.
double	PhotoL () const
	Return photometric L value.
std::string	AlgorithmName () const
	Return algorithm name found in Pvl file from constructor.
virtual void	SetStandardConditions (bool standard)
	Sets whether standard conditions will be used.
bool	StandardConditions () const
	Returns true if standard conditions are used, i.e., if SetStandardConditions(true) has been called. This is initialized to false in the constructor.
double	PhtTopder (double phase, double incidence, double emission)
	Obtain topographic derivative of an arbitrary photometric function.
double	CalcSurfAlbedo (double pha, double inc, double ema)
	Calculate the surface brightness using photometric angle information.
Static Public Member Functions
static double	PhtAcos (double cosang)
	Obtain arccosine of input value.
Protected Member Functions
virtual double	PhotoModelAlgorithm (double phase, double incidence, double emission)
Private Attributes
double	p_photoL