ApproachSolver Class Reference

#include <approachsolver.h>

Inheritance diagram for ApproachSolver:

Signals
void	solverMadeProgress (int progress)

Public Member Functions
	ApproachSolver (QObject *parent=nullptr)
QMap< long double, dms >	findClosestApproach (long double startJD, long double stopJD, const std::function< void(long double, dms)> &callback={})
GeoLocation *	getGeoLocation ()
void	setGeoLocation (GeoLocation *geo)
void	setMaxSeparation (dms sep)
void	setMaxSeparation (double sep)
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo () const const
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Protected Member Functions
virtual dms	findDistance ()=0
virtual double	findInitialStep (long double startJD, long double stopJD)=0
bool	findPrecise (QPair< long double, dms > *out, long double jd, double step, int prevSign)
dms	findSkyPointDistance (SkyPoint *obj1, SkyPoint *obj2)
virtual double	getMaxSeparation ()
virtual void	updatePositions (long double jd)=0
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Protected Attributes
KSPlanet	m_Earth

Additional Inherited Members
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
Public Attributes inherited from QObject
typedef	QObjectList

Detailed Description

Implements algorithms to find close approaches of two objects on the sky.

A class that implements a method to compute close approaches between any two solar system objects excluding planetary moons. Given two such objects, this class has implementations of algorithms required to find the time of closest approach in a given range of time. It is meant to be subclassed and provides the boilerplate (+ common interface) for classes like KSKonjunct and EclipseHandler.

Author

Akarsh Simha

Version

2.0

Definition at line 29 of file approachsolver.h.

Constructor & Destructor Documentation

ApproachSolver()

ApproachSolver::ApproachSolver ( QObject * parent = nullptr )

explicit

Definition at line 11 of file approachsolver.cpp.

Member Function Documentation

findClosestApproach()

QMap< long double, dms > ApproachSolver::findClosestApproach	(	long double	startJD,
		long double	stopJD,
		const std::function< void(long double, dms)> &	callback = {} )

Compute the closest approach of two planets in the given range.

Parameters

startJD	Julian Day corresponding to start of the calculation period
stopJD	Julian Day corresponding to end of the calculation period
callback	A callback function

Returns

Hash containing julian days of close conjunctions against separation

Definition at line 26 of file approachsolver.cpp.

findDistance()

virtual dms ApproachSolver::findDistance ( )

protectedpure virtual

Finds the angular distance between two solar system objects.

Returns

The angular distance between the two bodies.

Implemented in LunarEclipseHandler.

findInitialStep()

virtual double ApproachSolver::findInitialStep ( long double startJD, long double stopJD )

protectedpure virtual

findStep

Returns

the step size used by findClosestApproach (in Julian Days)

Make this as big as possible. The bigger it is, the more likely is a skip over...

Implemented in EclipseHandler, KSConjunct, and LunarEclipseHandler.

findPrecise()

bool ApproachSolver::findPrecise ( QPair< long double, dms > * out, long double jd, double step, int prevSign )

protected

Compute the precise value of the extremum once the extremum has been detected.

Parameters

out	A pointer to a QPair that stores the Julian Day and Separation corresponding to the extremum
jd	Julian day corresponding to the endpoint of the interval where extremum was detected.
step	The step in jd taken during computation earlier. (Defines the interval size)
prevSign	The previous sign of increment in moving from jd - step to jd

Returns

true if the extremum is a minimum

Definition at line 113 of file approachsolver.cpp.

findSkyPointDistance()

dms ApproachSolver::findSkyPointDistance ( SkyPoint * obj1, SkyPoint * obj2 )

protected

findSkyPointDistance

Parameters

obj1
obj2

Returns

the angular distance between two SkyPoints in arcminutes

Definition at line 157 of file approachsolver.cpp.

getGeoLocation()

GeoLocation * ApproachSolver::getGeoLocation ( )

inline

getGeoLocation

Returns

the currently set GeoLocation

Definition at line 58 of file approachsolver.h.

getMaxSeparation()

virtual double ApproachSolver::getMaxSeparation ( )

inlineprotectedvirtual

getMaxSeparation

Returns

the maximum separation allowed, based on the (guaranteed to be up-to-date) parameters of the objects if overwritten. Here it's just a constant.

Reimplemented in LunarEclipseHandler.

Definition at line 83 of file approachsolver.h.

setGeoLocation()

void ApproachSolver::setGeoLocation

(

GeoLocation *

geo

)

Sets the geographic location to compute conjunctions at.

Parameters

geo	Pointer to the GeoLocation object

Definition at line 17 of file approachsolver.cpp.

setMaxSeparation() [1/2]

void ApproachSolver::setMaxSeparation ( dms sep )

inline

Definition at line 66 of file approachsolver.h.

setMaxSeparation() [2/2]

void ApproachSolver::setMaxSeparation ( double sep )

inline

setMaxSeparation

Parameters

sep	- maximum allowed anglar separation

Definition at line 65 of file approachsolver.h.

solverMadeProgress

void ApproachSolver::solverMadeProgress ( int progress )

signal

solverMadeProgress

Parameters

progress

- progress in percent

updatePositions()

virtual void ApproachSolver::updatePositions ( long double jd )

protectedpure virtual

updatePositions

Update the positions of the objects involved.

Parameters

jd	Julian Day corresponding to the time of computation

Implemented in LunarEclipseHandler, and KSConjunct.

Member Data Documentation

m_Earth

KSPlanet ApproachSolver::m_Earth

protected

Definition at line 127 of file approachsolver.h.

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

• approachsolver.h
• approachsolver.cpp