A 3D vector in space. More...

#include <MVPosition.h>

Inheritance diagram for casa::MVPosition:

Public Member Functions
	MVPosition ()
	Default constructor generates a (0,0,0) position.
	MVPosition (const MVPosition &other)
	Copy constructor.
	MVPosition (Double in0, Double in1, Double in2)
	Creates a specified vector.
	MVPosition (Double in0)
	Creates a vector with specified length towards pole.
	MVPosition (const Quantity &l)
	MVPosition (const Quantity &l, Double angle0, Double angle1)
	Creates the position from specified (azimuth,elevation) angles and length.
	MVPosition (const Quantity &l, const Quantity &angle0, const Quantity &angle1)
	Creates the position from specified angles and length.
	MVPosition (const Quantum< Vector< Double > > &angle)
	If not enough angles: pole assumed (if none), or elevation =0 (if 1)
	MVPosition (const Quantity &l, const Quantum< Vector< Double > > &angle)
	MVPosition (const Vector< Double > &other)
	Create from specified length and/or angles and/or position.
	MVPosition (const Vector< Quantity > &other)
MVPosition &	operator= (const MVPosition &other)
	Copy assignment.
	~MVPosition ()
	Destructor.
Double	operator* (const MVPosition &other) const
	Multiplication defined as in-product.
Bool	operator== (const MVPosition &other) const
	Equality comparisons.
Bool	operator!= (const MVPosition &other) const
Bool	near (const MVPosition &other, Double tol=1e-13) const
Bool	near (const MVPosition &other, Quantity tol) const
Bool	nearAbs (const MVPosition &other, Double tol=1e-13) const
MVPosition	operator- () const
	Addition and subtraction.
MVPosition &	operator+= (const MVPosition &right)
MVPosition	operator+ (const MVPosition &right) const
MVPosition &	operator-= (const MVPosition &right)
MVPosition	operator- (const MVPosition &right) const
MVPosition &	operator*= (const RotMatrix &right)
	Multiplication with rotation matrix (see also global functions)
MVPosition &	operator*= (Double right)
	Multiplication with constant.
Double &	operator() (uInt which)
	Obtain an element.
const Double &	operator() (uInt which) const
virtual uInt	type () const
	Tell me your type.
virtual void	adjust ()
	Normalise direction aspects by adjusting the length to 1.
virtual void	adjust (Double &res)
	Adjustment with returned factor.
virtual void	readjust (Double res)
	Re-adjust using factor given.
virtual Double	radius ()
	Get radius of position.
Vector< Double >	get () const
	Generate a 3-vector of coordinates (length(m), angles(rad))
const Vector< Double > &	getValue () const
	Generate a 3-vector of x,y,z in m.
Quantum< Vector< Double > >	getAngle () const
	Generate angle 2-vector (in rad)
Quantum< Vector< Double > >	getAngle (const Unit &unit) const
	and with specified units
Double	getLong () const
	Get the longitudinal angle (in radians)
Quantity	getLong (const Unit &unit) const
	and with specified units
Double	getLat () const
	Get the latitude angle (rad)
Quantity	getLat (const Unit &unit) const
	and with specified units
Quantity	getLength () const
	Generate the length.
Quantity	getLength (const Unit &unit) const
	and generate it with the specified units
Double	positionAngle (const MVPosition &other) const
	Get the position angle between the directions.
Quantity	positionAngle (const MVPosition &other, const Unit &unit) const
Double	separation (const MVPosition &other) const
	Get the angular separation between two directions.
Quantity	separation (const MVPosition &other, const Unit &unit) const
MVPosition	crossProduct (const MVPosition &other) const
	Produce the cross product.
virtual void	print (ostream &os) const
	Print data.
virtual MeasValue *	clone () const
	Clone.
virtual Vector< Double >	getVector () const
	Get the value in internal units.
virtual void	putVector (const Vector< Double > &in)
	Set the value from internal units (set 0 for empty vector)
virtual Vector< Quantum< Double > >	getRecordValue () const
	Get the internal value as a `Vector<Quantity>`.
virtual Vector< Quantum< Double > >	getXRecordValue () const
virtual Vector< Quantum< Double > >	getTMRecordValue () const
virtual Bool	putValue (const Vector< Quantum< Double > > &in)
	Set the internal value if correct values and dimensions.
Static Public Member Functions
static void	assure (const MeasValue &in)
Static Public Attributes
static const Double	loLimit
	Internal limts codes for negative height.
static const Double	hiLimit
Protected Member Functions
Double	getLat (Double ln) const
	Get the latitude assuming length is given.
Protected Attributes
Vector< Double >	xyz
	Position vector (in m)

Detailed Description

A 3D vector in space.

Intended use:

Public interface

 <h3>Review Status</h3><dl><dt>Reviewed By:<dd>tcornwel<dt>Date Reviewed:<dd>1996/02/22<dt>Test programs:<dd>tMeasMath</dl>

Prerequisite

Etymology

From Measure, Value and Position

Synopsis

A MVPosition is a 3-vector of positions in a rectangular frame with internal units of m.
It can be constructed with:

MVPosition() creates point at origin (0,0,0)
MVPosition(MVPosition) creates a copy
MVPosition(Double, Double, Double) creates (x,y,z) with specified values
MVPosition(Quantity length,Double, Double) creates a MVPosition assuming that the two values are (in radians) angle along 'equator' and towards 'pole'. A length of zero will be made 1um.
MVPosition(Quantity length, Quantity, Quantity) creates a MVPosition assuming angles as in previous, or positions
MVPosition(Quantity, Quantum<Vector<Double> >) creates a MVPosition from angle vector, using first two angles, and assuming second as zero if not present, and pole if length 0.
MVPosition(Quantum<Vector<Double> > creates from angles or positions, depending on the units in the quantum vector. In the angle case, the data derived can be scaled with the readjust() function. If the unit of the quantum vector is length, position is assumed.
MVPosition(Vector<Double> creates from angles (less than or equal to two elements) or x,y,z (3 elements).
MVPosition(Vector<Quantity> creates from length+angles, angles, or x,y,z, depending on units.

A void adjust(Double) function normalises the vector to a length of 1; a get() returns as a Double 3-vector the length and angles of the position vector; a getAngle() returns a Quantum 2-vector, (uInt) returns the indicated element, and getValue returns the vector.
Positions can be added and subtracted.
The multiplication of two positions produces the in-product.

Example

See Mposition class.

Motivation

To do coordinate transformations

To Do

See if not better to have a direction + length

Definition at line 113 of file MVPosition.h.

Constructor & Destructor Documentation

casa::MVPosition::MVPosition ( )

Default constructor generates a (0,0,0) position.

casa::MVPosition::MVPosition ( const MVPosition & other )

Copy constructor.

casa::MVPosition::MVPosition	(	Double	in0,
		Double	in1,
		Double	in2
	)

Creates a specified vector.

casa::MVPosition::MVPosition ( Double in0 ) [explicit]

Creates a vector with specified length towards pole.

casa::MVPosition::MVPosition ( const Quantity & l )

casa::MVPosition::MVPosition	(	const Quantity &	l,
		Double	angle0,
		Double	angle1
	)

Creates the position from specified (azimuth,elevation) angles and length.

casa::MVPosition::MVPosition	(	const Quantity &	l,
		const Quantity &	angle0,
		const Quantity &	angle1
	)

Creates the position from specified angles and length.

or positions

<h3>Thrown Exceptions</h3><ul>     <li> AipsError if quantities not in angle format
</ul>

casa::MVPosition::MVPosition ( const Quantum< Vector< Double > > & angle )

If not enough angles: pole assumed (if none), or elevation =0 (if 1)

casa::MVPosition::MVPosition	(	const Quantity &	l,
		const Quantum< Vector< Double > > &	angle
	)

casa::MVPosition::MVPosition ( const Vector< Double > & other ) [explicit]

Create from specified length and/or angles and/or position.

casa::MVPosition::MVPosition ( const Vector< Quantity > & other )

casa::MVPosition::~MVPosition ( )

Destructor.

Member Function Documentation

virtual void casa::MVPosition::adjust ( ) [virtual]

Normalise direction aspects by adjusting the length to 1.

For position no adjustment; for direction adjustment

Reimplemented from casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

virtual void casa::MVPosition::adjust ( Double & res ) [virtual]

Adjustment with returned factor.

Reimplemented from casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

static void casa::MVPosition::assure ( const MeasValue & in ) [static]

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

virtual MeasValue* casa::MVPosition::clone ( ) const [virtual]

Clone.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

MVPosition casa::MVPosition::crossProduct ( const MVPosition & other ) const

Produce the cross product.

Vector<Double> casa::MVPosition::get ( ) const

Generate a 3-vector of coordinates (length(m), angles(rad))

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

Quantum<Vector<Double> > casa::MVPosition::getAngle ( ) const

Generate angle 2-vector (in rad)

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

Quantum<Vector<Double> > casa::MVPosition::getAngle ( const Unit & unit ) const

and with specified units

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

Double casa::MVPosition::getLat ( ) const

Get the latitude angle (rad)

Reimplemented in casa::MVDirection.

Quantity casa::MVPosition::getLat ( const Unit & unit ) const

and with specified units

Reimplemented in casa::MVDirection.

Double casa::MVPosition::getLat ( Double ln ) const [protected]

Get the latitude assuming length is given.

Quantity casa::MVPosition::getLength ( ) const

Generate the length.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

Quantity casa::MVPosition::getLength ( const Unit & unit ) const

and generate it with the specified units

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

Double casa::MVPosition::getLong ( ) const

Get the longitudinal angle (in radians)

Quantity casa::MVPosition::getLong ( const Unit & unit ) const

and with specified units

virtual Vector<Quantum<Double> > casa::MVPosition::getRecordValue ( ) const [virtual]

Get the internal value as a Vector<Quantity>.

Usable in records. The getXRecordValue() gets additional information for records. Note that the Vectors could be empty.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

virtual Vector<Quantum<Double> > casa::MVPosition::getTMRecordValue ( ) const [inline, virtual]

Reimplemented from casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVDirection.

Definition at line 270 of file MVPosition.h.

References getXRecordValue().

const Vector<Double>& casa::MVPosition::getValue ( ) const

Generate a 3-vector of x,y,z in m.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

virtual Vector<Double> casa::MVPosition::getVector ( ) const [virtual]

Get the value in internal units.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

virtual Vector<Quantum<Double> > casa::MVPosition::getXRecordValue ( ) const [virtual]

Reimplemented from casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVDirection.

Referenced by getTMRecordValue().

Bool casa::MVPosition::near	(	const MVPosition &	other,
		Double	tol = `1e-13`
	)		const

Bool casa::MVPosition::near	(	const MVPosition &	other,
		Quantity	tol
	)		const

Bool casa::MVPosition::nearAbs	(	const MVPosition &	other,
		Double	tol = `1e-13`
	)		const

Bool casa::MVPosition::operator!= ( const MVPosition & other ) const

Double& casa::MVPosition::operator() ( uInt which )

Obtain an element.

const Double& casa::MVPosition::operator() ( uInt which ) const

Double casa::MVPosition::operator* ( const MVPosition & other ) const

Multiplication defined as in-product.

MVPosition& casa::MVPosition::operator*= ( const RotMatrix & right )

Multiplication with rotation matrix (see also global functions)

MVPosition& casa::MVPosition::operator*= ( Double right )

Multiplication with constant.

MVPosition casa::MVPosition::operator+ ( const MVPosition & right ) const

MVPosition& casa::MVPosition::operator+= ( const MVPosition & right )

MVPosition casa::MVPosition::operator- ( ) const

Addition and subtraction.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

MVPosition casa::MVPosition::operator- ( const MVPosition & right ) const

MVPosition& casa::MVPosition::operator-= ( const MVPosition & right )

MVPosition& casa::MVPosition::operator= ( const MVPosition & other )

Copy assignment.

Bool casa::MVPosition::operator== ( const MVPosition & other ) const

Equality comparisons.

Double casa::MVPosition::positionAngle ( const MVPosition & other ) const

Get the position angle between the directions.

I.e. the angle between the direction from one to the pole, and from one to the other.

Reimplemented in casa::MVDirection.

Quantity casa::MVPosition::positionAngle	(	const MVPosition &	other,
		const Unit &	unit
	)		const

Reimplemented in casa::MVDirection.

virtual void casa::MVPosition::print ( ostream & os ) const [virtual]

Print data.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

virtual Bool casa::MVPosition::putValue ( const Vector< Quantum< Double > > & in ) [virtual]

Set the internal value if correct values and dimensions.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

virtual void casa::MVPosition::putVector ( const Vector< Double > & in ) [virtual]

Set the value from internal units (set 0 for empty vector)

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

virtual Double casa::MVPosition::radius ( ) [virtual]

Get radius of position.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

virtual void casa::MVPosition::readjust ( Double res ) [virtual]

Re-adjust using factor given.

Reimplemented from casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, and casa::MVEarthMagnetic.

Double casa::MVPosition::separation ( const MVPosition & other ) const

Get the angular separation between two directions.

Reimplemented in casa::MVDirection.

Quantity casa::MVPosition::separation	(	const MVPosition &	other,
		const Unit &	unit
	)		const

Reimplemented in casa::MVDirection.

virtual uInt casa::MVPosition::type ( ) const [virtual]

Tell me your type.

Implements casa::MeasValue.

Reimplemented in casa::MVuvw, casa::MVBaseline, casa::MVEarthMagnetic, and casa::MVDirection.

Member Data Documentation

const Double casa::MVPosition::hiLimit [static]

Definition at line 120 of file MVPosition.h.

const Double casa::MVPosition::loLimit [static]

Internal limts codes for negative height.

Definition at line 119 of file MVPosition.h.

Vector<Double> casa::MVPosition::xyz [protected]

Position vector (in m)

Definition at line 282 of file MVPosition.h.

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

casacore/casa/Quanta/MVPosition.h

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Intended use:

Prerequisite

Etymology

Synopsis

Example

Motivation

To Do

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation