#include <GCTAModelRadialAcceptance.hpp>

Inheritance diagram for GCTAModelRadialAcceptance::roi_kern:

Public Member Functions
	roi_kern (const GCTAModelRadial *parent, const double &roi, const double &dist)

double	eval (const double &r)
	Integration kernel for the Npred method. More...

Public Member Functions inherited from GFunction
	GFunction (void)
	Void constructor. More...

	GFunction (const GFunction &function)
	Copy constructor. More...

virtual	~GFunction (void)
	Destructor. More...

GFunction &	operator= (const GFunction &function)
	Assignment operator. More...

Protected Attributes
const GCTAModelRadial *	m_parent
	Pointer to radial model. More...

double	m_roi
	ROI radius in radians. More...

double	m_cosroi
	Cosine of ROI radius. More...

double	m_dist
	Distance between pointing and ROI centre in radians. More...

double	m_cosdist
	Cosine of distance. More...

double	m_sindist
	Sinus of distance. More...

Additional Inherited Members
Protected Member Functions inherited from GFunction
void	init_members (void)
	Initialise class members. More...

void	copy_members (const GFunction &function)
	Copy class members. More...

void	free_members (void)
	Delete class members. More...

Detailed Description

Definition at line 105 of file GCTAModelRadialAcceptance.hpp.

Constructor & Destructor Documentation

GCTAModelRadialAcceptance::roi_kern::roi_kern	(	const GCTAModelRadial *	parent,
		const double &	roi,
		const double &	dist
	)

inline

Definition at line 107 of file GCTAModelRadialAcceptance.hpp.

Member Function Documentation

double GCTAModelRadialAcceptance::roi_kern::eval ( const double & offset )

virtual

Integration kernel for the Npred method.

Parameters

[in] offset Offset angle (radians).

Computes

\[N_{\rm pred} = \int_{\rm ROI} r(\theta) \sin \theta {\rm d}\phi\]

where \(r(\theta)\) is the radial acceptance function, \(\theta\) is the measured offset angle from the pointing direction in radians, and \(\phi\) is the measured azimuth angle. The integration is done over the arc of the azimuth angle that lies within the ROI. This integration is done analytically using the "roi_arclength" support function.

Implements GFunction.

Definition at line 1041 of file GCTAModelRadialAcceptance.cpp.

References GCTAModelRadial::eval(), m_cosdist, m_cosroi, m_dist, m_parent, m_roi, m_sindist, gammalib::rad2deg, GCTAModelRadialAcceptance::radial(), gammalib::roi_arclength(), and sin().