Abstract interface to a TIN plate. More...

#include <AbstractPlate.h>

Inheritance diagram for Isis::AbstractPlate:

Collaboration diagram for Isis::AbstractPlate:

Public Member Functions
virtual	~AbstractPlate ()
	Empty destructor for an AbstractPlate object. More...

virtual QString	name () const =0
	Gets the name of this Plate type. More...

virtual Distance	minRadius () const =0
	Gets the minimum radius. More...

virtual Distance	maxRadius () const =0
	Gets the maximum radius. More...

virtual double	area () const =0
	Gets the area of the plate. More...

virtual NaifVector	normal () const =0
	Gets the normal. More...

virtual Angle	separationAngle (const NaifVector &raydir) const =0
	Gets the separation angle. More...

virtual bool	hasIntercept (const NaifVertex &vertex, const NaifVector &raydir) const =0
	Determines if a look direction from a point intercepts the plate. More...

virtual bool	hasPoint (const Latitude &lat, const Longitude &lon) const =0
	Determines the give lat/lon point intercept the triangular plate. More...

virtual Intercept *	intercept (const NaifVertex &vertex, const NaifVector &raydir) const =0
	Conpute the intercept point on a triangular plate. More...

virtual SurfacePoint *	point (const Latitude &lat, const Longitude &lon) const =0
	Determine the intercept point of a lat/lon location for the plate. More...

virtual AbstractPlate *	clone () const =0
	Returns a clone of the current plate. More...

Protected Member Functions
	AbstractPlate ()
	Empty constructor for an AbstractPlate object. More...

Intercept *	construct (const NaifVertex &vertex, const NaifVector &raydir, SurfacePoint *ipoint) const
	Construct an intercept from a clone of this plate as well as the given vertex, direction vector, and surface point. More...

Detailed Description

Abstract interface to a TIN plate.

This abstract class defines the interface for triangular plate. The plate is assumed to be a set of 3 body-fixed vertex points that describe a portion of the surface digital elevation model (DEM).

The interface allows for repeated queries (e.g., ray intersection, point containment) of the plate represented by the object containing the plate.

This class is not directly instantiable but is typically provided by a distinct plate model implementation (e.g., NAIF DSK).

This class can be cloned but not copied directly.

Author: 2014-02-25 Kris Becker

Constructor & Destructor Documentation

◆ ~AbstractPlate()

Isis::AbstractPlate::~AbstractPlate ( )

virtual

Empty destructor for an AbstractPlate object.

◆ AbstractPlate()

Isis::AbstractPlate::AbstractPlate ( )

protected

Empty constructor for an AbstractPlate object.

This constructor is protected.

Member Function Documentation

◆ area()

virtual double Isis::AbstractPlate::area ( ) const

pure virtual

Gets the area of the plate.

This is a pure virtual function.

Returns: double The area of the plate.

Implemented in Isis::TriangularPlate.

◆ clone()

virtual AbstractPlate* Isis::AbstractPlate::clone ( ) const

pure virtual

Returns a clone of the current plate.

Provides replication of the current triangular plate. Note this implementation returns a shared copy of the triangular plate as long as the plate type is shared by copy (TNT library is). This is a pure virtual function.

Returns: AbstractPlate* Returns a copy of the plate

Implemented in Isis::TriangularPlate.

Referenced by construct().

◆ construct()

Intercept * Isis::AbstractPlate::construct	(	const NaifVertex &	vertex,
		const NaifVector &	raydir,
		SurfacePoint *	ipoint
	)		const

protected

Construct an intercept from a clone of this plate as well as the given vertex, direction vector, and surface point.

Parameters

vertex	Observer position
raydir	Look direction
ipoint	Surface point of the intercept location on the body

Returns: Intercept * A pointer to an intercept constructed with the vertex, raydir, ipoint and clone of this AbstractPlate.

References clone().

◆ hasIntercept()

virtual bool Isis::AbstractPlate::hasIntercept	(	const NaifVertex &	vertex,
		const NaifVector &	raydir
	)		const

pure virtual

Determines if a look direction from a point intercepts the plate.

Given a point in space in body fixed coordinates and a look direction, this method determines the point of intercept on the plate. This is a pure virtual function.

Parameters

vertex	An observer point in space in body fixed coordinates
raydir	A look direction vector

Returns: bool Returns true if the look direction from the observer intercepts the plate, otherwise returns false

Implemented in Isis::TriangularPlate.

◆ hasPoint()

virtual bool Isis::AbstractPlate::hasPoint	(	const Latitude &	lat,
		const Longitude &	lon
	)		const

pure virtual

Determines the give lat/lon point intercept the triangular plate.

Given a latitude/longitude point, this method determines if it intercepts the plate. This is a pure virtual function.

Parameters

lat	The latitude of the given grid point
lon	Longitude of the given point

Returns: bool Returns true if the lat/lon point intercepts the plate, false otherwise

Implemented in Isis::TriangularPlate.

◆ intercept()

virtual Intercept* Isis::AbstractPlate::intercept	(	const NaifVertex &	vertex,
		const NaifVector &	raydir
	)		const

pure virtual

Conpute the intercept point on a triangular plate.

Given a point in space and a look direction, compute the intercept point on a triangular plate. If the intercept point does not exist, return a null pointer. This is a pure virtual function.

Parameters

vertex	Specifies a point in space of a body fixed coordinate
raydir	Specifies a look direction from the vertex in body fixed coordinates. It can be of any magnitude.

Returns: Intercept* Returns the intercept point if it exists on the triangular plate, otherwise returns a null pointer.

Implemented in Isis::TriangularPlate.

◆ maxRadius()

virtual Distance Isis::AbstractPlate::maxRadius ( ) const

pure virtual

Gets the maximum radius.

This is a pure virtual function.

Returns: Distance The maximum radius

Implemented in Isis::TriangularPlate.

◆ minRadius()

virtual Distance Isis::AbstractPlate::minRadius ( ) const

pure virtual

Gets the minimum radius.

This is a pure virtual function.

Returns: Distance The minimum radius

Implemented in Isis::TriangularPlate.

◆ name()

QString Isis::AbstractPlate::name ( ) const

pure virtual

Gets the name of this Plate type.

Returns: QString AbstractPlate; QString The name of this plate, "AbstractPlate"

Implemented in Isis::TriangularPlate.

◆ normal()

virtual NaifVector Isis::AbstractPlate::normal ( ) const

pure virtual

Gets the normal.

This is a pure virtual function.

Returns: NaifVector The normal

Implemented in Isis::TriangularPlate.

◆ point()

virtual SurfacePoint* Isis::AbstractPlate::point	(	const Latitude &	lat,
		const Longitude &	lon
	)		const

pure virtual

Determine the intercept point of a lat/lon location for the plate.

Determines if a lat/lon point intercepts a plate. Given a latitude and longitude coordinate, this method converts the point to a body fixed X/Y/Z value and computes intercept point within the boundaries if the plate. If no intercept is found, a null pointer is returned. This is a pure virtual function.

Parameters

lat	Latitude of the point
lon	Longitude of the point

Returns: SurfacePoint* Pointer to the intersection of the point on the triangle. If an intersection does not exist a null pointer is returned.

Implemented in Isis::TriangularPlate.

◆ separationAngle()

virtual Angle Isis::AbstractPlate::separationAngle ( const NaifVector & raydir ) const

pure virtual

Gets the separation angle.

This is a pure virtual function.

Parameters

raydir Given a direction vector, compute the angle of separation between it and the plate normal vector

Returns: Angle The separation angle

Implemented in Isis::TriangularPlate.

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

/usgs/pkgs/isis3.9.0_docs/ISIS3/isis/src/base/objs/AbstractPlate/AbstractPlate.h
/usgs/pkgs/isis3.9.0_docs/ISIS3/isis/src/base/objs/AbstractPlate/AbstractPlate.cpp

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ~AbstractPlate()

◆ AbstractPlate()

Member Function Documentation

◆ area()

◆ clone()

◆ construct()

◆ hasIntercept()

◆ hasPoint()

◆ intercept()

◆ maxRadius()

◆ minRadius()

◆ name()

◆ normal()

◆ point()

◆ separationAngle()