Container for a intercept condition. More...

#include <Intercept.h>

Collaboration diagram for Isis::Intercept:

Public Member Functions
	Intercept ()
	Default empty constructor.

	Intercept (const NaifVertex &observer, const NaifVector &raydir, SurfacePoint ipoint, AbstractPlate shape)
	Constructor of predetermined intercept point.

virtual	~Intercept ()
	Empty destructor.

bool	isValid () const
	This method tests the vailidty of the intercept point.

const NaifVertex &	observer () const
	Accessor for the observer position of the intercept.

const NaifVector &	lookDirectionRay () const
	Accessor for the look direction of the intercept.

SurfacePoint	location () const
	Returns the location of the intercept location on the shape.

NaifVector	normal () const
	Gets the normal vector to the shape for this plate.

Angle	emission () const
	Compute the emission of the intercept point from the observer.

Angle	separationAngle (const NaifVector &raydir) const
	Returns the separation angle of the observer and the plate normal.

const AbstractPlate *	shape () const
	Access the plate for this intercept.

Private Types
enum	ErrAction { Throw , NoThrow }
	Enumeration to indicate whether to throw an exception if an error occurs. More...

Private Member Functions
bool	verify (const bool &test, const QString &errmsg, const ErrAction &action=Throw) const
	Convenient error handler.

Private Attributes
NaifVertex	m_observer
	Three dimensional coordinate position of the observer, in body fixed.

NaifVector	m_raydir
	Three dimensional ray representing the look direction.

QSharedPointer< SurfacePoint >	m_point
	Surface point of the intercept location on the body, in body fixed.

QSharedPointer< AbstractPlate >	m_shape
	Shape Model for the intercept point.

Detailed Description

Container for a intercept condition.

This class is intended to contain all the necessary elements of an observer with a look direction and intercept point on an abtract shape. If efficient, reintrant, thread safe memory management elements (e.g., TNT) are used for the types, this can be used in threaded environments.

Author: 2012-12-05 Kris Becker

History

2012-12-05 Kris Becker - Original version.

2015-03-08 Jeannie Backer - Added documentation and test. Added class to ISIS trunk. References #2035

Definition at line 36 of file Intercept.h.

Member Enumeration Documentation

◆ ErrAction

enum Isis::Intercept::ErrAction

private

Enumeration to indicate whether to throw an exception if an error occurs.

Enumerator
Throw	Throw an exception if an error occurs.
NoThrow	Do not throw an exception if an error occurs.

Definition at line 62 of file Intercept.h.

Constructor & Destructor Documentation

◆ Intercept() [1/2]

Isis::Intercept::Intercept ( )

Default empty constructor.

Definition at line 30 of file Intercept.cpp.

◆ Intercept() [2/2]

Isis::Intercept::Intercept	(	const NaifVertex &	observer,
		const NaifVector &	raydir,
		SurfacePoint *	ipoint,
		AbstractPlate *	shape )

Constructor of predetermined intercept point.

This constructor provides all the elements that comprise an observer, look direction, intercept point and the shape it intersects. This is well suited for plates (TIN) intercept senarios.

Parameters

observer	Location of observer in body fixed position
raydir	Look direction of observer presumably at the target body
ipoint	Surface point of the intercept location on the body
shape	Shape of the intercept point

History: 2014-02-10 Kris Becker - Original version

Definition at line 50 of file Intercept.cpp.

◆ ~Intercept()

Isis::Intercept::~Intercept ( )

virtual

Empty destructor.

Definition at line 59 of file Intercept.cpp.

Member Function Documentation

◆ emission()

Angle Isis::Intercept::emission ( ) const

Compute the emission of the intercept point from the observer.

This method computes the emission angle from the observer to the plate intercept point if the representation of the observer, look direction and intercept point are valid.

Returns: Angle Returns the emission angle as computed from the observer given as determine from the intercept point

History: 2013-12-05 Kris Becker - Original version.

Definition at line 150 of file Intercept.cpp.

References isValid(), m_observer, m_point, separationAngle(), and verify().

◆ isValid()

bool Isis::Intercept::isValid ( ) const

This method tests the vailidty of the intercept point.

A point is invalid if the intercept point is null, if the shape is null, or if either the observer position or look direction vector is not size 3.

Returns: bool Indicates whether this object is valid.

Definition at line 70 of file Intercept.cpp.

References m_observer, m_point, m_raydir, m_shape, and Isis::validate().

Referenced by emission(), location(), normal(), and separationAngle().

◆ location()

SurfacePoint Isis::Intercept::location ( ) const

Returns the location of the intercept location on the shape.

This method returns the point of intercept from the observer and a given look direction from the perspective of the observer.

Returns: SurfacePoint Intercept point from the observer and look direction

History: 2014-02-13 Kris Becker - Original version

Definition at line 116 of file Intercept.cpp.

References isValid(), m_point, and verify().

◆ lookDirectionRay()

const NaifVector & Isis::Intercept::lookDirectionRay ( ) const

Accessor for the look direction of the intercept.

Returns: NaifVector A 3D ray representing the look direction of the observer in body fixed coordinates.

Definition at line 99 of file Intercept.cpp.

References m_raydir.

◆ normal()

NaifVector Isis::Intercept::normal ( ) const

Gets the normal vector to the shape for this plate.

Returns: NaifVector A 3D ray representing the normal direction at the intercept point in body fixed coordinates.

Definition at line 129 of file Intercept.cpp.

References isValid(), m_shape, and verify().

◆ observer()

const NaifVertex & Isis::Intercept::observer ( ) const

Accessor for the observer position of the intercept.

Returns: NaifVertex A 3D point representing the position of the observer in body fixed coordinates

Definition at line 87 of file Intercept.cpp.

References m_observer.

◆ separationAngle()

Angle Isis::Intercept::separationAngle ( const NaifVector & raydir ) const

Returns the separation angle of the observer and the plate normal.

This method computes the seperation between the look direction (from the observer) and the plate normal if the object contains a valid intercept point.

Parameters

raydir Look direction to compute the separation angle between it and the plate normal.

Returns: Angle Angle of separation

History: 2013-12-05 Kris Becker - Original version.

Definition at line 182 of file Intercept.cpp.

References isValid(), m_shape, and verify().

Referenced by emission().

◆ shape()

const AbstractPlate * Isis::Intercept::shape ( ) const

Access the plate for this intercept.

NOTE: A null pointer may be returned if this Intercept was constructed without a shape.

Returns: NaifVector A pointer to the AbstractPlate associated with this intercept.

Definition at line 223 of file Intercept.cpp.

References m_shape.

◆ verify()

bool Isis::Intercept::verify	(	const bool &	test,
		const QString &	errmsg,
		const ErrAction &	action = Throw ) const

private

Convenient error handler.

This convenience method provides an abtraction from which to throw errors.

Parameters

test	Boolean parameter to test for an error condition
errmsg	String containing the error message to include in the exception
action	Specifies action to take if error is specfied

Returns: bool Always returns the value of test if the specfied action does not request an exception to be thrown

History: 2013-12-05 Kris Becker - Original version.

Definition at line 205 of file Intercept.cpp.

References Isis::IException::Programmer, and Throw.

Referenced by emission(), location(), normal(), and separationAngle().

Member Data Documentation

◆ m_observer

NaifVertex Isis::Intercept::m_observer

private

Three dimensional coordinate position of the observer, in body fixed.

Definition at line 69 of file Intercept.h.

Referenced by emission(), isValid(), and observer().

◆ m_point

QSharedPointer<SurfacePoint> Isis::Intercept::m_point

private

Surface point of the intercept location on the body, in body fixed.

Definition at line 72 of file Intercept.h.

Referenced by emission(), isValid(), and location().

◆ m_raydir

NaifVector Isis::Intercept::m_raydir

private

Three dimensional ray representing the look direction.

Definition at line 70 of file Intercept.h.

Referenced by isValid(), and lookDirectionRay().

◆ m_shape

QSharedPointer<AbstractPlate> Isis::Intercept::m_shape

private

Shape Model for the intercept point.

Definition at line 74 of file Intercept.h.

Referenced by isValid(), normal(), separationAngle(), and shape().

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

src/base/objs/Intercept/Intercept.h
src/base/objs/Intercept/Intercept.cpp

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ ErrAction

Constructor & Destructor Documentation

◆ Intercept() [1/2]

◆ Intercept() [2/2]

◆ ~Intercept()

Member Function Documentation

◆ emission()

◆ isValid()

◆ location()

◆ lookDirectionRay()

◆ normal()

◆ observer()

◆ separationAngle()

◆ shape()

◆ verify()

Member Data Documentation

◆ m_observer

◆ m_point

◆ m_raydir

◆ m_shape