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Gyoto::Astrobj::InflateStar Class Referenceabstract

An Astrobj::Star with growing size. More...

#include <GyotoInflateStar.h>

Inheritance diagram for Gyoto::Astrobj::InflateStar:
Gyoto::Astrobj::Star Gyoto::Astrobj::UniformSphere Gyoto::Worldline Gyoto::Astrobj::Standard Gyoto::Hook::Listener Gyoto::Astrobj::Generic Gyoto::Functor::Double_constDoubleArray Gyoto::SmartPointee Gyoto::Object

Public Types

typedef Gyoto::SmartPointer< Gyoto::SmartPointeeSubcontractor_t(Gyoto::FactoryMessenger *, std::vector< std::string > const &)
 A subcontractor builds an object upon order from the Factory. More...
 

Public Member Functions

virtual Property const * getProperties () const
 Get list of properties. More...
 
 InflateStar ()
 Default constructor. More...
 
 InflateStar (const InflateStar &orig)
 Copy constructor.
 
virtual InflateStarclone () const
 Cloner. More...
 
virtual ~InflateStar ()
 Destructor.
 
 GYOTO_OBJECT_ACCESSORS_UNIT (timeInflateInit)
 
 GYOTO_OBJECT_ACCESSORS_UNIT (timeInflateStop)
 
 GYOTO_OBJECT_ACCESSORS_UNIT (radiusStop)
 
virtual double radiusAt (double t) const
 Radius at a given time.
 
virtual double radiusAt (double t, const std::string &t_unit) const
 Radius at a given time.
 
virtual double radiusAt (double t, const std::string &t_unit, const std::string &r_unit) const
 Radius at a given time.
 
virtual std::string className () const
 "InflateStar"
 
virtual std::string className_l () const
 "inflate_star"
 
virtual int Impact (Gyoto::Photon *ph, size_t index, Astrobj::Properties *data=NULL)
 Does a photon at these coordinates impact the object? More...
 
virtual double emission (double nu_em, double dsem, state_t const &cp, double const co[8]=NULL) const
 Emission is determined by spectrum_ and opacity_.
 
virtual void metric (SmartPointer< Metric::Generic >)
 Set the Metric gg_.
 
virtual SmartPointer< Metric::Genericmetric () const
 Get the Metric gg_.
 
virtual double getMass () const
 Return 1. More...
 
virtual double rMax ()
 Get maximal distance from center of coordinate system. More...
 
virtual double rMax () const
 Get maximal distance from center of coordinate system.
 
virtual double rMax (std::string const &unit)
 Get rmax_ is specified unit. More...
 
virtual double rMax (std::string const &unit) const
 Get rmax_ is specified unit.
 
virtual void rMax (double val)
 Set maximal distance from center of coordinate system. More...
 
virtual void rMax (double val, std::string const &unit)
 Set maximal distance from center of coordinate system. More...
 
virtual void setInitialCondition (double const coord[8])
 Same as Worldline::setInitialCondition(gg, coord, sys,1)
 
void setInitialCondition (SmartPointer< Metric::Generic > gg, const double coord[8], const int dir, double const Ephi[4], double const Etheta[4])
 Set or re-set the initial condition prior to integration. More...
 
void setInitialCondition (SmartPointer< Metric::Generic > gg, const double coord[8], const int dir)
 Set or re-set the initial condition prior to integration. More...
 
virtual int setParameter (std::string name, std::string content, std::string unit)
 Set parameter by name. More...
 
virtual void setParameter (Gyoto::Property const &p, std::string const &name, std::string const &content, std::string const &unit)
 Set parameter by Property (and name) More...
 
virtual void setParameters (FactoryMessenger *fmp)
 Main loop in Subcontractor_t function. More...
 
virtual void fillProperty (Gyoto::FactoryMessenger *fmp, Property const &p) const
 Output a single Property to XML. More...
 
virtual void getCartesian (double const *const dates, size_t const n_dates, double *const x, double *const y, double *const z, double *const xprime=NULL, double *const yprime=NULL, double *const zprime=NULL)
 Get the 6 Cartesian coordinates for specific dates. More...
 
virtual void getVelocity (double const pos[4], double vel[4])
 Yield velocity of the center of the sphere.
 
virtual void spectrum (SmartPointer< Spectrum::Generic >)
 Set spectrum_.
 
virtual SmartPointer< Spectrum::Genericspectrum () const
 Get spectrum_.
 
virtual void opacity (SmartPointer< Spectrum::Generic >)
 Set opacity_.
 
virtual SmartPointer< Spectrum::Genericopacity () const
 Get opacity_.
 
double radius () const
 Get radius_ in geometrical units.
 
virtual void radius (double)
 Set radius_ in geometrical units.
 
double radius (std::string const &) const
 Get radius_ in specified unit.
 
virtual void radius (double, std::string const &)
 Set radius_ in specified unit.
 
double deltaMaxOverRadius () const
 Get dltmor_.
 
virtual void deltaMaxOverRadius (double f)
 Set dltmor_.
 
double deltaMaxOverDistance () const
 Get dltmod_.
 
virtual void deltaMaxOverDistance (double f)
 Set dltmod_.
 
bool isotropic () const
 
void isotropic (bool)
 
double alpha () const
 
void alpha (double)
 
virtual double operator() (double const coord[4])
 Square distance to the center of the sphere. More...
 
virtual double operator() (double const data[])=0
 The actual function.
 
virtual double deltaMax (double *coord)
 
virtual double deltaMax (double coord[8])
 Get max step constraint for adaptive integration. More...
 
double deltaMax () const
 Get delta_max_.
 
virtual double deltaMax (double const pos[8], double delta_max_external) const
 
void deltaMax (double h1)
 
virtual double emission (double nu_em, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const =delete
 Obsolete, update your code;.
 
virtual void emission (double Inu[], double const nu_em[], size_t nbnu, double dsem, state_t const &coord_ph, double const coord_obj[8]=NULL) const
 Specific intensity Iν for several values of νem More...
 
virtual void emission (double Inu[], double nu_em[], size_t nbnu, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const =delete
 Obsolete, update your code.
 
virtual double integrateEmission (double nu1, double nu2, double dsem, state_t const &c_ph, double const c_obj[8]=NULL) const
 ν1ν2 Iν dν (or jν) More...
 
virtual double integrateEmission (double nu1, double nu2, double dsem, double c_ph[8], double c_obj[8]=NULL) const =delete
 Obsolete, update your code.
 
virtual void integrateEmission (double *I, double const *boundaries, size_t const *chaninds, size_t nbnu, double dsem, state_t const &cph, double const *co) const
 ν1ν2 Iν dν (or jν) More...
 
virtual void integrateEmission (double *I, double const *boundaries, size_t const *chaninds, size_t nbnu, double dsem, double *cph, double *co) const =delete
 Obsolete, update your code.
 
virtual double transmission (double nuem, double dsem, state_t const &coord_ph, double const coord_obj[8]) const
 Transmission: exp( αν * dsem ) More...
 
virtual double transmission (double nuem, double dsem, state_t const &coord) const =delete
 Obsolete, update your code.
 
virtual double transmission (double nuem, double dsem, double coord[8]) const =delete
 Obsolete, update your code.
 
virtual void safetyValue (double val)
 Set Standard::safety_value_.
 
virtual double safetyValue () const
 Get Standard::safety_value_.
 
double deltaInObj () const
 Get Generic::delta_inobj_. More...
 
void deltaInObj (double val)
 Set Generic::delta_inobj_.
 
virtual double giveDelta (double coord[8])
 Maximum δ inside object. More...
 
const std::string kind () const
 Get the kind of the Astrobj (e.g. "Star")
 
 GYOTO_OBJECT_ACCESSORS_UNIT (deltaMaxInsideRMax)
 
void opticallyThin (bool flag)
 Set whether the object is optically thin. More...
 
bool opticallyThin () const
 Query whether object is optically thin. More...
 
void showshadow (bool flag)
 
bool showshadow () const
 
void redshift (bool flag)
 
bool redshift () const
 
virtual Gyoto::Quantity_t getDefaultQuantities ()
 Which quantities to compute if know was requested. More...
 
virtual void processHitQuantities (Photon *ph, state_t const &coord_ph_hit, double const *coord_obj_hit, double dt, Astrobj::Properties *data) const
 Fills Astrobj::Properties. More...
 
virtual void processHitQuantities (Photon *ph, double *coord_ph_hit, double *coord_obj_hit, double dt, Astrobj::Properties *data) const =delete
 
virtual void radiativeQ (double Inu[], double Taunu[], double const nu_em[], size_t nbnu, double dsem, state_t const &coord_ph, double const coord_obj[8]=NULL) const
 emission and transmission together
 
virtual void radiativeQ (double Inu[], double Taunu[], double nu_em[], size_t nbnu, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const =delete
 
virtual void radiativeQ (double *Inu, double *Qnu, double *Unu, double *Vnu, double *alphaInu, double *alphaQnu, double *alphaUnu, double *alphaVnu, double *rQnu, double *rUnu, double *rVnu, double const *nuem, size_t nbnu, double dsem, state_t const &cph, double const *co) const
 
void incRefCount ()
 Increment the reference counter. Warning: Don't mess with the counter.
 
int decRefCount ()
 Decrement the reference counter and return current value. Warning: Don't mess with the counter.
 
int getRefCount ()
 Get the current number of references.
 
virtual bool isThreadSafe () const
 Whether this class is thread-safe. More...
 
void set (Property const &p, Value val)
 Set Value of a Property.
 
void set (Property const &p, Value val, std::string const &unit)
 Set Value (expressed in unit) of a Property.
 
void set (std::string const &pname, Value val)
 Set Value of a Property.
 
void set (std::string const &pname, Value val, std::string const &unit)
 Set Value (expressed in unit) of a Property.
 
Value get (Property const &p) const
 Get Value of a Property.
 
Value get (std::string const &pname) const
 Get Value of a Property.
 
Value get (Property const &p, std::string const &unit) const
 Get Value of a Property, converted to unit.
 
Value get (std::string const &pname, std::string const &unit) const
 Get Value of a Property, converted to unit.
 
Property const * property (std::string const pname) const
 Find property by name. More...
 
virtual void fillElement (Gyoto::FactoryMessenger *fmp) const
 Fill the XML element for this Object. More...
 
std::string describeProperty (Gyoto::Property const &p) const
 Format desrciption for a property. More...
 
void help () const
 Print (to stdout) some help on this class. More...
 
size_t getImin () const
 Get imin_.
 
size_t getImax () const
 Get imax_.
 
size_t getI0 () const
 Get i0_.
 
void initCoord (std::vector< double > const &)
 
std::vector< double > initCoord () const
 
virtual void setInitCoord (const double coord[8], int dir, double const Ephi[4], double const Etheta[4])
 Set Initial coordinate. More...
 
virtual void setInitCoord (const double coord[8], int dir=0)
 Set Initial coordinate. More...
 
virtual void setInitCoord (double const pos[4], double const vel[3], int dir=0)
 Set initial coordinate. More...
 
virtual void setPosition (double const pos[4])
 Set initial 4-position.
 
virtual void setVelocity (double const vel[3])
 Set initial 3-velocity.
 
void reset ()
 Forget integration, keeping initial contition.
 
void reInit ()
 Reset and recompute particle properties.
 
void integrator (std::string const &type)
 Set the integrator. More...
 
std::string integrator () const
 Describe the integrator used by state_.
 
double deltaMin () const
 Get delta_min_.
 
void deltaMin (double h1)
 Set delta_min_.
 
void absTol (double)
 Set abstol_.
 
double absTol () const
 Get abstol_.
 
void relTol (double)
 Set reltol_.
 
double relTol () const
 Get reltol_.
 
void maxCrossEqplane (double)
 Set #maxCrosEqplane_.
 
double maxCrossEqplane () const
 Get maxCrossEqplane_.
 
double deltaMaxOverR () const
 Get delta_max_over_r_.
 
void deltaMaxOverR (double t)
 Set delta_max_over_r_.
 
void delta (const double delta)
 Expand memory slots for polarization vectors. More...
 
void delta (double, const std::string &unit)
 Set delta_ in specified units.
 
double delta () const
 Get delta_.
 
double delta (const std::string &unit) const
 Get delta_ in specified units.
 
double tMin () const
 Get tmin_.
 
double tMin (const std::string &unit) const
 Get tmin_ in specified unit.
 
void tMin (double tlim)
 Set tmin_.
 
void tMin (double, const std::string &unit)
 Set tmin_ in specified unit.
 
void adaptive (bool mode)
 Set adaptive_.
 
bool adaptive () const
 Get adaptive_.
 
void secondary (bool sec)
 Set secondary_.
 
bool secondary () const
 Get secondary_.
 
void parallelTransport (bool pt)
 Set parallel_transport_.
 
bool parallelTransport () const
 Get parallel_transport_.
 
void maxiter (size_t miter)
 Set maxiter_.
 
size_t maxiter () const
 Get maxiter_.
 
double const * getCst () const
 Returns the worldline's cst of motion (if any) More...
 
void setCst (double const *cst, size_t const ncsts)
 Set Metric-specific constants of motion. More...
 
void constantsOfMotion (std::vector< double > const cstv)
 Set Metric-specific constants of motion. More...
 
std::vector< double > constantsOfMotion () const
 Return a copy of the Metric-specific constants of motion. More...
 
void getInitialCoord (std::vector< double > &dest) const
 Get initial coordinates + base vectors. More...
 
void getCoord (size_t index, Gyoto::state_t &dest) const
 Get coordinates+base vectors corresponding to index. More...
 
void getCoord (size_t index, Gyoto::state_t &dest)
 Get coordinates+base vectors corresponding to index. More...
 
void getCoord (double date, Gyoto::state_t &dest, bool proper=false)
 Get coordinates+base vectors corresponding to date dest[0]. More...
 
void getCoord (double const *const dates, size_t const n_dates, double *const x1dest, double *const x2dest, double *const x3dest, double *const x0dot=NULL, double *const x1dot=NULL, double *const x2dot=NULL, double *const x3dot=NULL, double *ep0=NULL, double *ep1=NULL, double *ep2=NULL, double *ep3=NULL, double *et0=NULL, double *et1=NULL, double *et2=NULL, double *et3=NULL, double *otime=NULL, bool proper=false)
 Get 8-coordinates for specific dates. More...
 
void getCoord (double *x0, double *x1, double *x2, double *x3) const
 Get all computed positions. More...
 
void getCartesianPos (size_t index, double dest[4]) const
 Get Cartesian expression of 4-position at index.
 
virtual void xStore (size_t ind, state_t const &coord, double tau)
 Store coord at index ind.
 
virtual void xStore (size_t ind, state_t const &coord)=delete
 Obsolete, update your code.
 
virtual void xStore (size_t ind, double const coord[8])=delete
 Obsolete, update your code.
 
virtual void xFill (double tlim, bool proper=false)
 Fill x0, x1... by integrating the Worldline from previously set inittial condition to time tlim.
 
size_t get_nelements () const
 Get number of computed dates.
 
void get_t (double *dest) const
 Get computed dates.
 
void get_tau (double *dest) const
 Get computed proper times or values of the affine parameter.
 
void get_xyz (double *x, double *y, double *z) const
 Get 3-position in cartesian coordinates for computed dates.
 
void checkPhiTheta (double coord[8]) const
 Bring θ in [0,Π] and φ in [0,2Π]. More...
 
void getSkyPos (SmartPointer< Screen > screen, double *dalpha, double *ddellta, double *dD) const
 Get computed positions in sky coordinates.
 
void get_dot (double *x0dot, double *x1dot, double *x2dot, double *x3dot) const
 Get computed 4-velocities.
 
void get_prime (double *x1prime, double *x2prime, double *x3prime) const
 Get computed 3-velocities.
 
void save_txyz (char *fichierxyz) const
 Save in a file.
 
void save_txyz (char *const filename, double const t1, double const mass_sun, double const distance_kpc, std::string const unit, SmartPointer< Screen > sc=NULL)
 Save, converted.
 

Public Attributes

 GYOTO_WORLDLINE
 
int stopcond
 Whether and why integration is finished.
 

Static Public Attributes

static GYOTO_OBJECT Property const properties []
 

Protected Member Functions

virtual double integrateEmission (double nu1, double nu2, double dsem, state_t const &c_ph, double const *c_obj=NULL) const
 
virtual double transmission (double nuem, double dsem, state_t const &, double const *) const
 Transmission is determined by opacity_.
 
virtual void xAllocate ()
 Allocate x0, x1 etc. with default size. More...
 
virtual void xAllocate (size_t size)
 Allocate x0, x1 etc. with a specified size. More...
 
virtual size_t xExpand (int dir)
 Expand x0, x1 etc... to hold more elements. More...
 
virtual void xExpand (double *&x, int dir)
 Expand one array to hold more elements. More...
 
virtual void eAllocate ()
 Allocate ep0_ ... et3_. More...
 
virtual void eDeallocate ()
 Deallocate ep0_ ... et3_. More...
 
virtual void eExpand (int dir)
 
virtual void tell (Gyoto::Hook::Teller *)
 This is how a Teller tells. More...
 

Protected Attributes

double radius_
 sphere radius [geometrical units]
 
bool isotropic_
 if 1, then emission just returns 1
 
SmartPointer< Spectrum::Genericspectrum_
 sphere emission law
 
SmartPointer< Spectrum::Genericopacity_
 if optically thin, opacity law
 
double dltmor_
 see deltaMax(double*)
 
double dltmod_
 see deltaMax(double*)
 
double critical_value_
 See operator()(double const coord[4])
 
double safety_value_
 See operator()(double const coord[4])
 
double delta_inobj_
 Constant value of the integration step inside object, in units of the compact object's mass M.
 
SmartPointer< Gyoto::Metric::Genericgg_
 The Metric in this end of the Universe.
 
double rmax_
 Maximum distance to the center of the coordinate system [geometrical units]. More...
 
double deltamaxinsidermax_
 Maximum Photon integration step inside rmax_ [geometrical units]. More...
 
bool flag_radtransf_
 1 if radiative transfer inside Astrobj, else 0
 
int shadow_
 1 to highlight the shadow region in the image
 
int noredshift_
 1 to impose redshift factor g = 1
 
std::string kind_
 The "kind" that is output in the XML entity. More...
 
std::vector< std::string > plugins_
 The plug-ins that needs to be loaded to access this instance's class. More...
 
SmartPointer< Gyoto::Metric::Genericmetric_
 The Gyoto::Metric in this part of the universe.
 
double * tau_
 proper time or affine parameter
 
double * x0_
 t or T
 
double * x1_
 r or x
 
double * x2_
 θ or y
 
double * x3_
 φ or z
 
double * x0dot_
 tdot or Tdot
 
double * x1dot_
 rdot or xdot
 
double * x2dot_
 θdot or ydot
 
double * x3dot_
 φdot or zdot
 
double * ep0_
 
double * ep1_
 Coordinate of first base vector to parallel transport.
 
double * ep2_
 Coordinate of first base vector to parallel transport.
 
double * ep3_
 Coordinate of first base vector to parallel transport.
 
double * et0_
 Coordinate of first base vector to parallel transport.
 
double * et1_
 Coordinate of Second base vector to parallel transport.
 
double * et2_
 Coordinate of Second base vector to parallel transport.
 
double * et3_
 Coordinate of Second base vector to parallel transport.
 
size_t x_size_
 Coordinate of Second base vector to parallel transport. More...
 
size_t imin_
 Minimum index for which x0_, x1_... have been computed.
 
size_t i0_
 Index of initial condition in array.
 
size_t imax_
 Maximum index for which x0_, x1_... have been computed.
 
bool adaptive_
 Whether integration should use adaptive delta.
 
bool secondary_
 Experimental: choose 0 to compute only primary image. More...
 
bool parallel_transport_
 Whether to parallel transport a local triad. More...
 
double delta_
 Initial integrating step. More...
 
double tmin_
 Time limit for the integration (geometrical units) More...
 
double * cst_
 Worldline's csts of motion (if any)
 
size_t cst_n_
 Number of constants of motion.
 
int wait_pos_
 Hack in setParameters()
 
double * init_vel_
 Hack in setParameters()
 
size_t maxiter_
 Maximum number of iterations when integrating.
 
double delta_min_
 Minimum integration step for the adaptive integrator. More...
 
double delta_max_
 Maximum integration step for the adaptive integrator. More...
 
double delta_max_over_r_
 Numerical tuning parameter. More...
 
double abstol_
 Absolute tolerance of the integrator. More...
 
double reltol_
 Absolute tolerance of the integrator. More...
 
double maxCrossEqplane_
 Maximum number of crossings of equatorial plane. More...
 
SmartPointer< Worldline::IntegState::Genericstate_
 An object to hold the integration state.
 

Private Attributes

double timeinflateinit_
 coordinate time of starting inflation
 
double timeinflatestop_
 coordinate time of stopping inflation
 
double radiusstop_
 maximum radius of star
 

Friends

class Gyoto::SmartPointer< Gyoto::Astrobj::InflateStar >
 

Detailed Description

An Astrobj::Star with growing size.

Member Typedef Documentation

◆ Subcontractor_t

typedef Gyoto::SmartPointer<Gyoto::SmartPointee> Gyoto::SmartPointee::Subcontractor_t(Gyoto::FactoryMessenger *, std::vector< std::string > const &)
inherited

A subcontractor builds an object upon order from the Factory.

Various classes need to provide a subcontractor to be able to instantiate themselves upon order from the Factory. A subcontractor is a function (often a static member function) which accepts a pointer to a FactoryMessenger as unique parameter, communicates with the Factory using this messenger to read an XML description of the object to build, and returns this objet. SmartPointee::Subcontractor_t* is just generic enough a typedef to cast to and from other subcontractor types: Astrobj::Subcontractor_t, Metric::Subcontractor_t, Spectrum::Subcontractor_t. A subcontractor needs to be registered using the relevant Register() function: Astrobj::Register(), Metric::Register(), Spectrum::Register().

Constructor & Destructor Documentation

◆ InflateStar()

Gyoto::Astrobj::InflateStar::InflateStar ( )

Default constructor.

Create InflateStar object with undefined initial conditions. One needs to set the coordinate system, the metric, and the initial position and velocity before integrating the orbit. setInititialCondition() can be used for that.

Member Function Documentation

◆ checkPhiTheta()

void Gyoto::Worldline::checkPhiTheta ( double  coord[8]) const
inherited

Bring θ in [0,Π] and φ in [0,2Π].

checkPhiTheta() Modifies coord if the corrdinates are spherical-like so that coord[2]=theta is in [0,pi] and coord[3]=phi is in [0,2pi]. Important to use in all astrobj in spherical coordinates to prevent "z-axis problems".

◆ clone()

virtual InflateStar* Gyoto::Astrobj::InflateStar::clone ( ) const
virtual

Cloner.

This method must be implemented by the various Astrobj::Generic subclasses in order to support cloning:

SmartPointer<Astrobj> deep_copy = original->clone();

Cloning is necessary for multi-threading, recommended for interaction with the Yorick plug-in etc.

Implementing it is very straightforward, as long as the copy constructor Generic(const Generic& ) has been implemented:

MyAstrobj* MyAstrobj::clone() const { return new MyAstrobj(*this); }

Reimplemented from Gyoto::Astrobj::Star.

◆ constantsOfMotion() [1/2]

void Gyoto::Worldline::constantsOfMotion ( std::vector< double > const  cstv)
inherited

Set Metric-specific constants of motion.

The will (re)allocate Worldline::cst_, copy cst into it, and set Worldline::cst_n_.

This is the same as getCst using a vector instead of a C-style array.

◆ constantsOfMotion() [2/2]

std::vector<double> Gyoto::Worldline::constantsOfMotion ( ) const
inherited

Return a copy of the Metric-specific constants of motion.

This funtion return a copy of the constants of motion. getCst() can be used to retrieve a pointer to the actual array used internally which is slightly more efficient for read-only access.

◆ delta()

void Gyoto::Worldline::delta ( const double  delta)
inherited

Expand memory slots for polarization vectors.

Assignment to another Worldline Set delta_

◆ deltaInObj()

double Gyoto::Astrobj::Standard::deltaInObj ( ) const
inherited

Get Generic::delta_inobj_.

Get the constant integration step inside the astrobj

Returns
delta_inobj_ in geometrical units

◆ deltaMax() [1/4]

virtual double Gyoto::Astrobj::UniformSphere::deltaMax ( double *  coord)
virtualinherited
Parameters
[in]coordcurrent photon position
Returns
max( dltmor_*radius_, dltmod_*operator()(double coord[]) )

◆ deltaMax() [2/4]

virtual double Gyoto::Astrobj::Generic::deltaMax ( double  coord[8])
virtualinherited

Get max step constraint for adaptive integration.

Parameters
[in]coordposition
Returns
max step to find this object reliably

Reimplemented in Gyoto::Astrobj::Complex.

◆ deltaMax() [3/4]

virtual double Gyoto::Worldline::deltaMax ( double const  pos[8],
double  delta_max_external 
) const
virtualinherited

Get delta max at a given position

Parameters
[in]pos4-position
[in]delta_max_externalexternal constraint on delta_max
Returns
the smallest value between delta_max_, delta_max_external, and R*delta_max_over_r_ where R is pos[1] in spherical coordinates and max(x1, x2, x3) in Cartesian coordinates.

◆ deltaMax() [4/4]

void Gyoto::Worldline::deltaMax ( double  h1)
inherited

Set delta_max_

◆ describeProperty()

std::string Gyoto::Object::describeProperty ( Gyoto::Property const &  p) const
inherited

Format desrciption for a property.

Returns a string containing the name(s) and type of the property, as well as whether it supports unit.

◆ eAllocate()

virtual void Gyoto::Worldline::eAllocate ( )
protectedvirtualinherited

Allocate ep0_ ... et3_.

Allocate memory for polarization vectors

◆ eDeallocate()

virtual void Gyoto::Worldline::eDeallocate ( )
protectedvirtualinherited

Deallocate ep0_ ... et3_.

Deallocate memory for polarization vectors

◆ eExpand()

virtual void Gyoto::Worldline::eExpand ( int  dir)
protectedvirtualinherited

Call xExpand(double * &x, int dir) on #ep0_, ep1_ etc.

◆ emission()

virtual void Gyoto::Astrobj::Generic::emission ( double  Inu[],
double const  nu_em[],
size_t  nbnu,
double  dsem,
state_t const &  coord_ph,
double const  coord_obj[8] = NULL 
) const
virtualinherited

Specific intensity Iν for several values of νem

Called by the default implementation for processHitQuantities().

emission() computes the intensity Iν emitted by the small volume of length dsem. It should take self-absorption along dsem into account.

Same as emission(double nu_em, double dsem, double coord_ph[8], double coord_obj[8]=NULL) const looping on several values of nu_em.

Parameters
Inu[nbnu]Output (must be set to a previously allocated array of doubles)
nu_em[nbnu]Frequencies at emission
nbnuSize of Inu[] and nu_em[]
dsemLength over which to integrate inside the object
coord_phPhoton coordinate
coord_objEmitter coordinate at current photon position
Returns
Iν or dIν [W m-2 sr-2]

Reimplemented in Gyoto::Astrobj::Python::ThinDisk, and Gyoto::Astrobj::Python::Standard.

◆ fillElement()

virtual void Gyoto::Object::fillElement ( Gyoto::FactoryMessenger fmp) const
virtualinherited

Fill the XML element for this Object.

The base implementation simply calls fillProperty() for each Property defined for the Object.

Derived classes should avoid overriding fillElement(). It may make sense occasionally, e.g. to make sure that the metric is output first.

To customize how a given Property is rendered, it is better to override fillProperty().

If this method is overridden, the implementation should in general call fillElement() on the direct base.

Reimplemented in Gyoto::Scenery, Gyoto::Spectrometer::Complex, Gyoto::Astrobj::Complex, and Gyoto::Metric::Complex.

◆ fillProperty()

virtual void Gyoto::Astrobj::Star::fillProperty ( Gyoto::FactoryMessenger fmp,
Property const &  p 
) const
virtualinherited

Output a single Property to XML.

The base implementation decides what to do based on the p.type. The format matches how setParameters() an setParameter() would interpret the XML descition.

Overriding this method should be avoided, but makes sense in some cases (for instance Screen::fillProperty() selects a different unit for Distance based on its magnitude, so that stellar sizes are expressed in solar radii while smaller sizes can be expressed in meters and larger sizes in parsecs).

Overriding implementation should fall-back on calling the implementation in the direct parent class:

class A: public Object {};
class B: public A {
using B::setParameter;
Property const &p) const ;
};
void B::fillProperty(Gyoto::FactoryMessenger *fmp,
Property const &p) const {
if (name=="Duff") fmp->doSomething();
else A::fillProperty(fmp, p);
}

Reimplemented from Gyoto::Object.

◆ getCartesian()

virtual void Gyoto::Astrobj::Star::getCartesian ( double const *const  dates,
size_t const  n_dates,
double *const  x,
double *const  y,
double *const  z,
double *const  xprime = NULL,
double *const  yprime = NULL,
double *const  zprime = NULL 
)
virtualinherited

Get the 6 Cartesian coordinates for specific dates.

This method is present in both the API of UniformSphere and Worldline. It is pure virtual in UniformSphere. The Star reimplementation is a trivial wrapper around Worldline::getCartesian().

Implements Gyoto::Astrobj::UniformSphere.

◆ getCoord() [1/5]

void Gyoto::Worldline::getCoord ( size_t  index,
Gyoto::state_t &  dest 
) const
inherited

Get coordinates+base vectors corresponding to index.

Depending on the value of parallel_transport_, get position (xi_), velocity (xidot_) and possibly other triad vectors (epi_ and eti_). coord is resized to the right number of elements.

◆ getCoord() [2/5]

void Gyoto::Worldline::getCoord ( size_t  index,
Gyoto::state_t &  dest 
)
inherited

Get coordinates+base vectors corresponding to index.

We need this non-const implementation to allow the const, size_t and the non-const, double implementations to coexist.

◆ getCoord() [3/5]

void Gyoto::Worldline::getCoord ( double  date,
Gyoto::state_t &  dest,
bool  proper = false 
)
inherited

Get coordinates+base vectors corresponding to date dest[0].

Depending on the value of parallel_transport_, get position (xi_), velocity (xidot_) and possibly other triad vectors (epi_ and eti_). coord is resized to the right number of elements.

◆ getCoord() [4/5]

void Gyoto::Worldline::getCoord ( double const *const  dates,
size_t const  n_dates,
double *const  x1dest,
double *const  x2dest,
double *const  x3dest,
double *const  x0dot = NULL,
double *const  x1dot = NULL,
double *const  x2dot = NULL,
double *const  x3dot = NULL,
double *  ep0 = NULL,
double *  ep1 = NULL,
double *  ep2 = NULL,
double *  ep3 = NULL,
double *  et0 = NULL,
double *  et1 = NULL,
double *  et2 = NULL,
double *  et3 = NULL,
double *  otime = NULL,
bool  proper = false 
)
inherited

Get 8-coordinates for specific dates.

The coordinates will be computed using the integrator, so they will be as accurate as possible. Some heuristics are used to speed up the process and it is presumably faster to call this routine with a sorted list of dates. The line will be integrated further as required. An error will be thrown if it is not possible to reach a certain date.

Parameters
[in]datesthe list of dates for which the coordinates are to be computed in proper time or affine parameter if #proper is true or in coordinate time if #proper is false (default);
[in]n_datesthe number of dates to compute ;
[out]x1dest,x2dest,x3dest,x0dot,x1dot,x2dot,x3dotarrays in which to store the result. These pointer may be set to NULL to retrieve only part of the information. They must be pre-allocated.
[out]ephi0,ephi1,ephi2,ephi3,etheta0,etheta1,etheta2,etheta3arrays in which to store the ephi and etheta (parallel transport case). These pointer may be set to NULL to retrieve only part of the information. They must be pre-allocated.
[out]otimearray in which to store the other time: coordinate time if #proper, else proper time or affine parameter.
[in]properbool: whether #dates is proper time (or affine parameter) or coordinate time.

◆ getCoord() [5/5]

void Gyoto::Worldline::getCoord ( double *  x0,
double *  x1,
double *  x2,
double *  x3 
) const
inherited

Get all computed positions.

Get all the pre-computed 8 coordinates (e.g. thanks to a prior call to xFill()) of this worldline.

◆ getCst()

double const* Gyoto::Worldline::getCst ( ) const
inherited

Returns the worldline's cst of motion (if any)

Return pointer to array holding the previously set Metric-specific constants of motion.

This function returns a pointer to the actual storage location and should be handled with care. std::vector<double> Worldline:constantsOfMotion() const provides a convenient way to retrieve a copy of the content.

◆ getDefaultQuantities()

virtual Gyoto::Quantity_t Gyoto::Astrobj::Generic::getDefaultQuantities ( )
virtualinherited

Which quantities to compute if know was requested.

Return a Gyoto::Quantity_t suitable as input to Gyoto::Scenery::setRequestedQuantities() to set de default quantities to compute for this object. The default of these defaults GYOTO_QUANTITY_INTENSITY.

Reimplemented in Gyoto::Astrobj::PageThorneDisk.

◆ getInitialCoord()

void Gyoto::Worldline::getInitialCoord ( std::vector< double > &  dest) const
inherited

Get initial coordinates + base vectors.

Depending on the size of dest and on the value of parallel_transport_, get position (xi_), velocity (xidot_) and possibly other triad vectors (epi_ and eti_).

◆ getMass()

virtual double Gyoto::Astrobj::Star::getMass ( ) const
virtualinherited

Return 1.

The mass of a Star is always 1. Stars do not perturb the metric. The only relevant point is that Stars are massive particules, their exact mass is of no importance.

Implements Gyoto::Worldline.

◆ getProperties()

virtual Property const* Gyoto::Astrobj::InflateStar::getProperties ( ) const
virtual

Get list of properties.

This method is declared automatically by the GYOTO_OBJECT macro and defined automatically by the GYOTO_PROPERTY_END macro.

Reimplemented from Gyoto::Astrobj::Star.

◆ giveDelta()

virtual double Gyoto::Astrobj::Standard::giveDelta ( double  coord[8])
virtualinherited

Maximum δ inside object.

Gives the requested integration step δt (in coordinate time t) between two neighbooring points along a portion of geodesic inside an astrobj; the current implementation only considers a constant delta, equal to Standard::deltaInobj()

Parameters
coordinput coordinate at which δt is given

Reimplemented in Gyoto::Astrobj::Python::Standard.

◆ help()

void Gyoto::Object::help ( ) const
inherited

Print (to stdout) some help on this class.

Describe all properties that this instance supports.

◆ Impact()

virtual int Gyoto::Astrobj::InflateStar::Impact ( Gyoto::Photon ph,
size_t  index,
Astrobj::Properties data = NULL 
)
virtual

Does a photon at these coordinates impact the object?

Impact() checks whether a Photon impacts the object between two integration steps of the photon's trajectory (those two steps are photon->getCoord(index, coord1) and photon->getCoord(index+1, coord2)). Impact returns 1 if the photon impacts the object between these two steps, else 0. In many cases of geometrically thick obects, the implementation Astrobj::Standard::Impact() will be fine.

Impact will call Generic::processHitQuantities() (which is virtual and may be re-implemented) to compute observable properties on demand: if the data pointer is non-NULL, the object will look in it for pointers to properties which apply to its kind. If a pointer to a property known to this object is present, then the property is computed and store at the pointed-to address. For instance, all objects know the "intensity" property. If data->intensity != NULL, the instensity is computed and stored in *data->intensity.

If data is non-NULL and only in this case, processHitQuantities() will also call ph->transmit() to update the transmissions of the Photon (see Photon::transmit(size_t, double)). This must not be done if data is NULL (see Astrobj::Complex::Impact() for an explanation).

Impact() may not extend the ph Worldline. The only two dates that are guaranteed to be defined are at indices index and index+1.

Parameters
phGyoto::Photon aimed at the object;
indexIndex of the last photon step;
dataPointer to a structure to hold the observables at impact.
Returns
1 if impact, 0 if not.

Reimplemented from Gyoto::Astrobj::Standard.

◆ integrateEmission() [1/2]

virtual double Gyoto::Astrobj::Generic::integrateEmission ( double  nu1,
double  nu2,
double  dsem,
state_t const &  c_ph,
double const  c_obj[8] = NULL 
) const
virtualinherited

ν1ν2 Iν dν (or jν)

Compute the integral of emission() from ν1 to ν2. The default implementation is a numerical integrator which works well enough and is reasonably fast if emission() is a smooth function (i.e. no emission or absorption lines). If possible, it is wise to implement an analytical solution. It is used by processHitQuantities to compute the "BinSpectrum" quantity which is the most physical: it is the only quantity that can be actually measured directly by a real-life instrument.

Reimplemented in Gyoto::Astrobj::Python::ThinDisk, Gyoto::Astrobj::Python::Standard, and Gyoto::Astrobj::Torus.

◆ integrateEmission() [2/2]

virtual void Gyoto::Astrobj::Generic::integrateEmission ( double *  I,
double const *  boundaries,
size_t const *  chaninds,
size_t  nbnu,
double  dsem,
state_t const &  cph,
double const *  co 
) const
virtualinherited

ν1ν2 Iν dν (or jν)

Like double integrateEmission(double nu1, double nu2, double dsem, double c_ph[8], double c_obj[8]) const for each Spectrometer channel.

Reimplemented in Gyoto::Astrobj::Python::ThinDisk, Gyoto::Astrobj::Python::Standard, and Gyoto::Astrobj::PolishDoughnut.

◆ integrator()

void Gyoto::Worldline::integrator ( std::string const &  type)
inherited

Set the integrator.

Initialize state_ to use the required integrator.

Parameters
[in]typeEither "Legacy" or (if GYOTO_HAVE_BOOST_INTEGRATORS) one of "runge_kutta_cash_karp54", "runge_kutta_fehlberg78", "runge_kutta_dopri5", "runge_kutta_cash_karp54_classic"

◆ isThreadSafe()

virtual bool Gyoto::Object::isThreadSafe ( ) const
virtualinherited

Whether this class is thread-safe.

Return True if this object is thread-safe, i.e. if an instance and its clone can be used in parallel threads (in the context of Scenery::raytrace()). Known objects which are not thread-safe include Lorene metrics and everything from the Python plug-in.

The default implementation considers that the class itself is thread safe and recurses into the declared properties to check whether they are safe too. Classes that abide to the Object/Property paradigm and are themselves thread-safe have nothing special to do.

Objects that clone children in their copy constructor that are not declared as properties must take these children into account.

Classes that are never thread-safe must declare it. It acn be easily done using GYOTO_OBJECT_THREAD_SAFETY in the class declaration and GYOTO_PROPERTY_THREAD_UNSAFE in the class definition.

◆ operator()()

virtual double Gyoto::Astrobj::UniformSphere::operator() ( double const  coord[4])
virtualinherited

Square distance to the center of the sphere.

Ensure integration does not miss the object

Implements Gyoto::Astrobj::Standard.

Reimplemented in Gyoto::Astrobj::StarTrace.

◆ opticallyThin() [1/2]

void Gyoto::Astrobj::Generic::opticallyThin ( bool  flag)
inherited

Set whether the object is optically thin.

Set flag indicating that radiative transfer should be integrated, i.e. the object is to be considered optically thin.

Parameters
flag1 if optically thin, 0 if optically thick.

◆ opticallyThin() [2/2]

bool Gyoto::Astrobj::Generic::opticallyThin ( ) const
inherited

Query whether object is optically thin.

See opticallyThin(bool flag).

◆ processHitQuantities()

virtual void Gyoto::Astrobj::Generic::processHitQuantities ( Photon ph,
state_t const &  coord_ph_hit,
double const *  coord_obj_hit,
double  dt,
Astrobj::Properties data 
) const
virtualinherited

Fills Astrobj::Properties.

processHitQuantities fills the requested data in Impact. To use it, you need to call it in the Impact() method for your object in case of hit. It will fill Redshift, Intensity, Spectrum, BinSpectrum and update the Photon's transmission by calling Photon::transmit(), only if data==NULL.

You can overload it for your Astrobj. The generic implementation calls emission(), integrateEmission() and transmission() below.

Reimplemented in Gyoto::Astrobj::PageThorneDisk, and Gyoto::Astrobj::DynamicalDiskBolometric.

◆ property()

Property const* Gyoto::Object::property ( std::string const  pname) const
inherited

Find property by name.

Look into the Property list for a Property whose name (or name_false, for a boolean Property) is pname. Return a const pointer to the first such property found, or NULL if none is found.

◆ rMax() [1/4]

virtual double Gyoto::Astrobj::Star::rMax ( )
virtualinherited

Get maximal distance from center of coordinate system.

Get maximal distance from center of coordinate system at which a Photon may hit the object.

Child classes may use the rmax_ member to cache this value, if its current value is DBL_MAX.

It can also be set using rMax().

Returns
rmax_ in geometrical units

Reimplemented from Gyoto::Astrobj::Generic.

◆ rMax() [2/4]

virtual double Gyoto::Astrobj::Generic::rMax ( std::string const &  unit)
virtualinherited

Get rmax_ is specified unit.

Call rMax() and convert result to unit.

Parameters
unitstring
Returns
double rmax converted to unit

◆ rMax() [3/4]

virtual void Gyoto::Astrobj::Generic::rMax ( double  val)
virtualinherited

Set maximal distance from center of coordinate system.

Set maximal distance from center of coordinate system at which a Photon may hit the object.

Parameters
valnew rmax_ in geometrical units.

◆ rMax() [4/4]

virtual void Gyoto::Astrobj::Generic::rMax ( double  val,
std::string const &  unit 
)
virtualinherited

Set maximal distance from center of coordinate system.

Call Generic::rMax(double val) after converting val from unit to geometrical units.

Parameters
valrmax_ expressed in unit "unit";
unitstring...

◆ setCst()

void Gyoto::Worldline::setCst ( double const *  cst,
size_t const  ncsts 
)
inherited

Set Metric-specific constants of motion.

The will (re)allocate Worldline::cst_, copy cst into it, and set Worldline::cst_n_.

This is the same as void Worldline:constantsOfMotion(std::vector<double> const cstv) using a C-style array instead of a vector.

◆ setInitCoord() [1/3]

virtual void Gyoto::Worldline::setInitCoord ( const double  coord[8],
int  dir,
double const  Ephi[4],
double const  Etheta[4] 
)
virtualinherited

Set Initial coordinate.

Set imin_=imax_=i0_, and x_[i0_]=coord[].

If dir==1, i0_ is set to 0. If dir==-1, i0_ is set to x_size_-1.

If dir==0 and the Worldine has never been computed (i0_==0, imin_==1 and imax_==0), then dir defaults to 1 for a massive particle and -1 for a massless particle.

If dir==0 and the Worldine has already been computed, i0_ is not changed.

Parameters
coordnew initial coordinates
dirdirection of integration. 1 for forward integration, -1 for backards integration, 0 for unknown or both
Ephiinitial value of base vector to parallel-transport. Ignored if parallel_transport_ is false.
Ethetainitial value of base vector to parallel-transport. Ignored if parallel_transport_ is false.

◆ setInitCoord() [2/3]

virtual void Gyoto::Worldline::setInitCoord ( const double  coord[8],
int  dir = 0 
)
virtualinherited

Set Initial coordinate.

Set imin_=imax_=i0_, and x_[i0_]=coord[].

If dir==1, i0_ is set to 0. If dir==-1, i0_ is set to x_size_-1.

If dir==0 and the Worldine has never been computed (i0_==0, imin_==1 and imax_==0), then dir defaults to 1 for a massive particle and -1 for a massless particle.

If dir==0 and the Worldine has already been computed, i0_ is not changed.

Parameters
coordnew initial coordinates
dirdirection of integration. 1 for forward integration, -1 for backards integration, 0 for unknown or both

Reimplemented in Gyoto::Astrobj::StarTrace.

◆ setInitCoord() [3/3]

virtual void Gyoto::Worldline::setInitCoord ( double const  pos[4],
double const  vel[3],
int  dir = 0 
)
virtualinherited

Set initial coordinate.

Parameters
posinitial 4-position
velinitial 3-velocity
dirdirection of integration

◆ setInitialCondition() [1/2]

void Gyoto::Worldline::setInitialCondition ( SmartPointer< Metric::Generic gg,
const double  coord[8],
const int  dir,
double const  Ephi[4],
double const  Etheta[4] 
)
inherited

Set or re-set the initial condition prior to integration.

Parameters
ggGyoto::SmartPointer to the Gyoto::Metric in this universe;
coord8 element array containing the initial condition, i.e. the 4-position and the 4-velocity of the Photon at the receiving end;
dirdirection: 1 for future, -1 for past.
Ephiinitial value of base vector to parallel-transport. Ignored if parallel_transport_ is false.
Ethetainitial value of base vector to parallel-transport. Ignored if parallel_transport_ is false.

◆ setInitialCondition() [2/2]

void Gyoto::Worldline::setInitialCondition ( SmartPointer< Metric::Generic gg,
const double  coord[8],
const int  dir 
)
inherited

Set or re-set the initial condition prior to integration.

Parameters
ggGyoto::SmartPointer to the Gyoto::Metric in this universe;
coord8 element array containing the initial condition, i.e. the 4-position and the 4-velocity of the Photon at the receiving end;
dirdirection: 1 for future, -1 for past.

◆ setParameter() [1/2]

virtual int Gyoto::Astrobj::Star::setParameter ( std::string  name,
std::string  content,
std::string  unit 
)
virtualinherited

Set parameter by name.

This function is used when parsing an XML description, if no Property of this name is found. Overriding implementation should fall-back on calling the direct's parent implementation:

class A: public Object {};
class B: public A {
using B::setParameter;
virtual int setParameter(std::string name,
std::string content,
std::string unit);
};
int B::setParameter(std::string name,
std::string content,
std::string unit) {
if (name=="Duff") doSomething(content, unit);
else return A::setParameter(name, content, unit);
return 0; // name was known
}
Parameters
nameXML name of the parameter (XML entity). This may have a path component, e.g. "Astrobj::Radius", in which case a property named "Astrobj" will be sought in the current object, and setParameter will be called recusrively on this Astrobj with Radius as name.
contentstring representation of the value
unitstring representation of the unit
Returns
0 if this parameter is known, 1 if it is not.

Reimplemented from Gyoto::Object.

◆ setParameter() [2/2]

virtual void Gyoto::Object::setParameter ( Gyoto::Property const &  p,
std::string const &  name,
std::string const &  content,
std::string const &  unit 
)
virtualinherited

Set parameter by Property (and name)

This function is used when parsing an XML description, if Property (p) of this name is found (i.e. either p.name or p.name_false is equal to name). Implementation should fall-back on calling the direct's parent implementation:

class A: public Object {};
class B: public A {
using B::setParameter;
virtual void setParameter(Gyoto::Property const &p,
std::string name,
std::string content,
std::string unit);
};
void B::setParameter(Gyoto::Property const &p,
std::string name,
std::string content,
std::string unit) {
if (name=="Duff") doSomething(content, unit);
else A::setParameter(p, name, content, unit);
}
Parameters
pProperty that matches name (p.name == name or p.name_false == name)
nameXML name of the parameter (XML entity)
contentstring representation of the value
unitstring representation of the unit

Reimplemented in Gyoto::Astrobj::PolishDoughnut.

◆ setParameters()

virtual void Gyoto::Astrobj::Star::setParameters ( FactoryMessenger fmp)
virtualinherited

Main loop in Subcontractor_t function.

The Subcontractor_t function for each Astrobj kind should look somewhat like this (templated as Gyoto::Astrobj::Subcontractor<MyKind>):

SmartPointer<Astrobj::Generic>
Gyoto::Astrobj::MyKind::Subcontractor(FactoryMessenger* fmp) {
SmartPointer<MyKind> ao = new MyKind();
ao -> setParameters(fmp);
return ao;
}

Each object kind should implement setParameter(string name, string content, string unit) to interpret the individual XML elements. setParameters() can be overloaded in case the specific Astrobj class needs low level access to the FactoryMessenger. See UniformSphere::setParameters().

Reimplemented from Gyoto::Astrobj::Generic.

◆ tell()

virtual void Gyoto::Worldline::tell ( Gyoto::Hook::Teller msg)
protectedvirtualinherited

This is how a Teller tells.

A teller will basically call listener->tell(this).

Parameters
msgTeller* the Teller who is telling... Useful if the Listener listens to several Tellers.

Reimplemented from Gyoto::Hook::Listener.

◆ transmission()

virtual double Gyoto::Astrobj::Generic::transmission ( double  nuem,
double  dsem,
state_t const &  coord_ph,
double const  coord_obj[8] 
) const
virtualinherited

Transmission: exp( αν * dsem )

transmission() computes the transmission of this fluid element or 0 if optically thick. The default implementation returns 1. (no attenuation) if optically thin, 0. if optically thick.

Parameters
nuemfrequency in the fluid's frame
coordPhoton coordinate
dsemgeometrical length in geometrical units

Reimplemented in Gyoto::Astrobj::PatternDisk, and Gyoto::Astrobj::DynamicalDisk3D.

◆ xAllocate() [1/2]

virtual void Gyoto::Worldline::xAllocate ( )
protectedvirtualinherited

Allocate x0, x1 etc. with default size.

The default size is GYOTO_DEFAULT_X_SIZE

◆ xAllocate() [2/2]

virtual void Gyoto::Worldline::xAllocate ( size_t  size)
protectedvirtualinherited

Allocate x0, x1 etc. with a specified size.

Parameters
size: number of cells in each array x0, x1 etc.

Reimplemented in Gyoto::Astrobj::StarTrace.

◆ xExpand() [1/2]

virtual size_t Gyoto::Worldline::xExpand ( int  dir)
protectedvirtualinherited

Expand x0, x1 etc... to hold more elements.

Double the size of arrays x0, x1 etc. and copy old version of the array in the first half if dir =1 and in the second half if dir =-1.

Parameters
dir: 1 to expand after last element, -1 to expand before first element
Returns
ind : if dir=1, new index of old last element, if dir=-1, new index of old first element

Reimplemented in Gyoto::Astrobj::StarTrace.

◆ xExpand() [2/2]

virtual void Gyoto::Worldline::xExpand ( double *&  x,
int  dir 
)
protectedvirtualinherited

Expand one array to hold more elements.

If you need to expand more arrays than x0_ ... x3_ and the dots, call this on your array before calling xExpand(int dir).

Parameters
[in,out]xarray to expand
[in]dir

Member Data Documentation

◆ abstol_

double Gyoto::Worldline::abstol_
protectedinherited

Absolute tolerance of the integrator.

Used by the adaptive integrators implemented in IntegState::Boost. Refer to the boost::numeric::odeint documentation for more details.

◆ delta_

double Gyoto::Worldline::delta_
protectedinherited

Initial integrating step.

Default: GYOTO_DEFAULT_DELTA

◆ delta_max_

double Gyoto::Worldline::delta_max_
protectedinherited

Maximum integration step for the adaptive integrator.

The default (GYOTO_DEFAULT_DELTA_MAX) is usually fine.

For IntegState::Legacy, set it in the Metric instead!

◆ delta_max_over_r_

double Gyoto::Worldline::delta_max_over_r_
protectedinherited

Numerical tuning parameter.

For IntegState::Legacy, set it in the Metric instead!

Ensure that delta (the numerical integration step) is never larger than a fraction of the distance between the current location and the center of the coordinate system.

The default (GYOTO_DEFAULT_DELTA_MAX_OVER_R) is usually fine.

◆ delta_min_

double Gyoto::Worldline::delta_min_
protectedinherited

Minimum integration step for the adaptive integrator.

The default (GYOTO_DEFAULT_DELTA_MIN) is usually fine.

For IntegState::Legacy, set it in the Metric instead!

◆ deltamaxinsidermax_

double Gyoto::Astrobj::Generic::deltamaxinsidermax_
protectedinherited

Maximum Photon integration step inside rmax_ [geometrical units].

Maximum step for Photon integation when inside the sphere of radius rmax_.

deltamaxinsidermax_ is in geometrical units.

◆ kind_

std::string Gyoto::Object::kind_
protectedinherited

The "kind" that is output in the XML entity.

E.g. for an Astrobj, fillElement() will ensure

<Astrobj kind="kind_" ...>...</Astrobj>

is written.

◆ maxCrossEqplane_

double Gyoto::Worldline::maxCrossEqplane_
protectedinherited

Maximum number of crossings of equatorial plane.

Used to determine how much higher-order image features should be kept.

◆ parallel_transport_

bool Gyoto::Worldline::parallel_transport_
protectedinherited

Whether to parallel transport a local triad.

Typically used to trace the base in which the Stokes parameters are expressed in the context of polarization.

◆ plugins_

std::vector<std::string> Gyoto::Object::plugins_
protectedinherited

The plug-ins that needs to be loaded to access this instance's class.

E.g. for an Astrobj, fillElement() will ensure

<Astrobj ... plugin="plugins_">...</Astrobj>

is written.

◆ reltol_

double Gyoto::Worldline::reltol_
protectedinherited

Absolute tolerance of the integrator.

Used by the adaptive integrators implemented in IntegState::Boost. Refer to the boost::numeric::odeint documentation for more details.

◆ rmax_

double Gyoto::Astrobj::Generic::rmax_
protectedinherited

Maximum distance to the center of the coordinate system [geometrical units].

Maximum distance from the center of the coordinate system at which a photon may hit the object. Child classes may compute a decent value for rmax_ at any time if rmax_ is DBL_MAX. External classes (Photons in particular) must use rMax() to access this information.

rmax_ is in geometrical units.

◆ secondary_

bool Gyoto::Worldline::secondary_
protectedinherited

Experimental: choose 0 to compute only primary image.

This feature is in development.

◆ tmin_

double Gyoto::Worldline::tmin_
protectedinherited

Time limit for the integration (geometrical units)

Computation does not go back before tmin_. Default is -DBL_MAX. tmin_ is always expressed in geometrical units, it is essentially a tuning parameter for the ray-tracing process. tmin_ should be chosen to always be longer than the distance between the screen and the object.

◆ x_size_

size_t Gyoto::Worldline::x_size_
protectedinherited

Coordinate of Second base vector to parallel transport.

Size of x0_, x1_... arrays


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