casacore::RotMatrix Class Reference

A 3x3 rotation matrix. More...

#include <RotMatrix.h>

Public Member Functions
	RotMatrix ()
	Default constructor generates a unit 3x3 matrix. More...
	RotMatrix (const RotMatrix &other)
	The copy constructor copies. More...
	RotMatrix (const Euler &other)
	Make from an Euler. More...
	RotMatrix (const Euler &other, Int ax0, Int ax1, Int ax2)
	Make from an Euler around specified axes. More...
RotMatrix &	operator= (const RotMatrix &other)
	Copy assignment. More...
	~RotMatrix ()
	Destructor. More...
RotMatrix &	operator*= (const RotMatrix &other)
	The multiplication operations generate matrix products. More...
RotMatrix	operator* (const RotMatrix &other) const
Double &	operator() (uInt row, uInt column)
	Return the indicated element. More...
const Double &	operator() (uInt row, uInt column) const
Matrix< Double >	get () const
	Get as Matrix. More...
void	transpose ()
	Transpose the rotation matrix. More...
void	set (const Matrix< Double > &in)
	Fill Rotation matrix from Matrix. More...
void	set (const Vector< Double > &in0, const Vector< Double > &in1, const Vector< Double > &in2)
	Fill Rotation matrix from 3 (row) vectors. More...

Private Member Functions
void	applySingle (Double angle, Int which)
	Apply to a rotation matrix a further rotation of angle around the specified axis which (0 or 1 or 2). More...

Private Attributes
Double	rotat [3][3]
	The rotation matrix (3x3) More...

Friends
ostream &	operator<< (ostream &os, const RotMatrix &rot)
	Output a rotation matrix as a matrix. More...

Detailed Description

A 3x3 rotation matrix.

Intended use:

Internal

Review Status

Reviewed By:

tcornwel

Date Reviewed:

1996/02/15

Test programs:

tMeasMath

Prerequisite

• Matrix
• Euler

Etymology

From Rotation and Matrix

Synopsis

A rotation matrix is a 3x3 matrix, which can be used to rotate a coordinate system, notably the direction cosines in MVDirection.
A RotMatrix can be constructed by the default constructor (which will set the diagonal to 1), a copy constructor, and from a set of Euler angles with RotMatrix(Euler).
Multiplication can be done (by *= and *) of two rotation matrices.
The (uInt, uInt) operator returns the indicated element.

Example

See Euler

Motivation

To use in nutation and other coordinate calculations

Definition at line 85 of file RotMatrix.h.

Constructor & Destructor Documentation

casacore::RotMatrix::RotMatrix

(

)

Default constructor generates a unit 3x3 matrix.

casacore::RotMatrix::RotMatrix

(

const RotMatrix &

other

)

The copy constructor copies.

casacore::RotMatrix::RotMatrix

(

const Euler &

other

)

Make from an Euler.

casacore::RotMatrix::RotMatrix	(	const Euler &	other,
		Int	ax0,
		Int	ax1,
		Int	ax2
	)

Make from an Euler around specified axes.

casacore::RotMatrix::~RotMatrix

(

)

Destructor.

Member Function Documentation

void casacore::RotMatrix::applySingle ( Double  angle, Int  which  )

private

Apply to a rotation matrix a further rotation of angle around the specified axis which (0 or 1 or 2).

Matrix<Double> casacore::RotMatrix::get

(

)

const

Get as Matrix.

Double& casacore::RotMatrix::operator()	(	uInt	row,
		uInt	column
	)

Return the indicated element.

const Double& casacore::RotMatrix::operator()	(	uInt	row,
		uInt	column
	)		const

RotMatrix casacore::RotMatrix::operator*

(

const RotMatrix &

other

)

const

RotMatrix& casacore::RotMatrix::operator*=

(

const RotMatrix &

other

)

The multiplication operations generate matrix products.

RotMatrix& casacore::RotMatrix::operator=

(

const RotMatrix &

other

)

Copy assignment.

void casacore::RotMatrix::set

(

const Matrix< Double > &

in

)

Fill Rotation matrix from Matrix.

void casacore::RotMatrix::set	(	const Vector< Double > &	in0,
		const Vector< Double > &	in1,
		const Vector< Double > &	in2
	)

Fill Rotation matrix from 3 (row) vectors.

void casacore::RotMatrix::transpose

(

)

Transpose the rotation matrix.

Friends And Related Function Documentation

ostream& operator<< ( ostream &  os, const RotMatrix &  rot  )

friend

Output a rotation matrix as a matrix.

Member Data Documentation

Double casacore::RotMatrix::rotat[3][3]

private

The rotation matrix (3x3)

Definition at line 136 of file RotMatrix.h.

---

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

• casa/Quanta/RotMatrix.h