JASTRONOMY::JMorphologyGauss2D Struct Reference

Implementation of 2D-Gaussian source morphology. More...

#include <JMorphology.hh>

Inheritance diagram for JASTRONOMY::JMorphologyGauss2D:

Public Member Functions
virtual std::istream &	read (std::istream &in) override
	Read source morphology from input stream.
virtual std::ostream &	write (std::ostream &out) const override
	Write source morphology to output stream.
virtual JSourceLocation	get () const override
	Get location on sky.
const JSourceLocation &	getSourceLocation () const
	Get source location.
	operator JAngle3D () const
	Type conversion operator.
double	getDeclination () const
	Get declination.
double	getRightAscension () const
	Get right ascension.
double	getDot (const JSourceLocation &location) const
	Dot product.
void	set (const angle_type_deg &angle)
	Convert angle.
bool	equals (const angle_type &angle, const double precision=std::numeric_limits< double >::min()) const
	Check equality.

Static Public Member Functions
static std::istream &	read (std::istream &in, JSourceLocation &source)
	Read source location in degrees from input stream.
static std::ostream &	write (std::ostream &out, const JSourceLocation &source)
	Write source location in degrees to output stream.

Public Attributes
double	sigmaX_deg
double	sigmaY_deg

Protected Attributes
double	_theta_
double	_phi_

Detailed Description

Implementation of 2D-Gaussian source morphology.

Note that all input angles are in degrees.

Definition at line 233 of file JMorphology.hh.

Member Function Documentation

read() [1/2]

virtual std::istream & JASTRONOMY::JMorphologyGauss2D::read ( std::istream & in )

inlineoverridevirtual

Read source morphology from input stream.

Parameters

in	input stream

Returns

input stream

Implements JASTRONOMY::JMorphology.

Definition at line 242 of file JMorphology.hh.

    {
      return JMorphology::read(in, *this)
        >> this->sigmaX_deg >> this->sigmaY_deg;
    }

write() [1/2]

virtual std::ostream & JASTRONOMY::JMorphologyGauss2D::write ( std::ostream & out ) const

inlineoverridevirtual

Write source morphology to output stream.

Parameters

out	output stream

Returns

output stream

Implements JASTRONOMY::JMorphology.

Definition at line 255 of file JMorphology.hh.

    {
      return JMorphology::write(out, *this)
        << ' ' << this->sigmaX_deg << ' ' << this->sigmaY_deg;
    }

get()

virtual JSourceLocation JASTRONOMY::JMorphologyGauss2D::get ( ) const

inlineoverridevirtual

Get location on sky.

Returns

location on sky

Implements JASTRONOMY::JMorphology.

Definition at line 267 of file JMorphology.hh.

    {
      using namespace JPP;
 
      JDirection3D u(0.0, 0.0, 1.0);
   
      if (sigmaX_deg > 0.0 ||
          sigmaY_deg > 0.0) {
 
        const double x = sin(gRandom->Gaus(0.0, getRadians(sigmaX_deg)));
        const double y = sin(gRandom->Gaus(0.0, getRadians(sigmaY_deg)));
 
        u = JDirection3D(x, y, sqrt(1.0 - x*x - y*y));
      }
 
      const JRotation3D Rs(this->getSourceLocation());
 
      u.rotate_back(Rs);
 
      return JSourceLocation(u);
    }

read() [2/2]

static std::istream & JASTRONOMY::JMorphology::read ( std::istream & in, JSourceLocation & source )

inlinestaticinherited

Read source location in degrees from input stream.

Parameters

in	input stream
source	source

Returns

input stream

Definition at line 60 of file JMorphology.hh.

    {
      angle_type_deg angle;
 
      in >> angle;
 
      source.set(angle);
 
      return in;
    }

write() [2/2]

static std::ostream & JASTRONOMY::JMorphology::write ( std::ostream & out, const JSourceLocation & source )

inlinestaticinherited

Write source location in degrees to output stream.

Parameters

out	output stream
source	source

Returns

output stream

Definition at line 79 of file JMorphology.hh.

    {
      return out << angle_type_deg(source);
    }

getSourceLocation()

const JSourceLocation & JASTRONOMY::JSourceLocation::getSourceLocation ( ) const

inlineinherited

Get source location.

Returns

source location

Definition at line 485 of file JAstronomy.hh.

    {
      return static_cast<const JSourceLocation&>(*this);
    }

operator JAngle3D()

JASTRONOMY::JSourceLocation::operator JAngle3D ( ) const

inlineinherited

Type conversion operator.

Returns

polar angles [rad]

Definition at line 496 of file JAstronomy.hh.

    {
      return JAngle3D(PI/2 - _theta_, _phi_);
    }

getDeclination()

double JASTRONOMY::JSourceLocation::getDeclination ( ) const

inlineinherited

Get declination.

Definition at line 502 of file JAstronomy.hh.

getRightAscension()

double JASTRONOMY::JSourceLocation::getRightAscension ( ) const

inlineinherited

Get right ascension.

Definition at line 503 of file JAstronomy.hh.

getDot()

double JASTRONOMY::JSourceLocation::getDot ( const JSourceLocation & location ) const

inlineinherited

Dot product.

Parameters

location

source location

Returns

dot product

Definition at line 512 of file JAstronomy.hh.

    {
      return 
        cos(this->_theta_) * cos(location._theta_) * cos(this->_phi_ - location._phi_) +
        sin(this->_theta_) * sin(location._theta_);
    }

set()

void JASTRONOMY::angle_type_rad::set ( const angle_type_deg & angle )

inlineinherited

Convert angle.

Parameters

angle

angle [rad]

Definition at line 293 of file JAstronomy.hh.

    {
      static_cast<angle_type_rad&>(*this) = angle_type_rad(angle);
    }

equals()

bool JASTRONOMY::angle_type::equals ( const angle_type & angle, const double precision = std::numeric_limits<double>::min() ) const

inlineinherited

Check equality.

Parameters

angle	pair of angles
precision	precision

Returns

true if angles are equal; else false

Definition at line 194 of file JAstronomy.hh.

    {
      return (fabs(this->_theta_ - angle._theta_) <= precision &&
              fabs(this->_phi_   - angle._phi_)   <= precision);
    }

Member Data Documentation

sigmaX_deg

double JASTRONOMY::JMorphologyGauss2D::sigmaX_deg

Definition at line 290 of file JMorphology.hh.

sigmaY_deg

double JASTRONOMY::JMorphologyGauss2D::sigmaY_deg

Definition at line 291 of file JMorphology.hh.

_theta_

double JASTRONOMY::angle_type::_theta_

protectedinherited

Definition at line 250 of file JAstronomy.hh.

_phi_

double JASTRONOMY::angle_type::_phi_

protectedinherited

Definition at line 251 of file JAstronomy.hh.

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

• JMorphology.hh