Mat3D Class Reference

Three-by-three matrix. More...

#include <mat3d.hpp>

Public Member Functions
	Mat3D ()
	Constructor for zero matrix. More...
	Mat3D (double a11, double a12, double a13, double a21, double a22, double a23, double a31, double a32, double a33)
	Constructor for matrix with preset elements. More...
	~Mat3D ()
	Destructor. More...
double &	operator() (int i)
	Indexing for matrix. More...
const double &	operator() (int i) const
	Indexing for constant matrix. More...
double &	operator() (int i, int j)
	Indexing for matrix. More...
const double &	operator() (int i, int j) const
	Indexing for matrix. More...
double	determinant (void) const
	Return determinant of matrix. More...
Mat3D	inverse (void) const
	Return inverse matrix. More...
Mat3D	inverse (double det) const
	Return inverse matrix. More...
Vec3D	operator* (const Vec3D &x) const
	Matrix-vector multiplication. More...

Friends
std::ostream &	operator<< (std::ostream &os, const Mat3D &m)
	Outputting to stream. More...

Detailed Description

Three-by-three matrix.

Dense three-by-three matrix. Matrix data in row first order:

    | 0 1 2 |
A = | 3 4 5 |
    | 6 7 8 |

Constructor & Destructor Documentation

Mat3D() [1/2]

Mat3D::Mat3D

(

)

Constructor for zero matrix.

Mat3D() [2/2]

Mat3D::Mat3D	(	double	a11,
		double	a12,
		double	a13,
		double	a21,
		double	a22,
		double	a23,
		double	a31,
		double	a32,
		double	a33
	)

Constructor for matrix with preset elements.

~Mat3D()

Mat3D::~Mat3D ( )

inline

Destructor.

Member Function Documentation

determinant()

double Mat3D::determinant

(

void

)

const

Return determinant of matrix.

inverse() [1/2]

Mat3D Mat3D::inverse

(

double

det

)

const

Return inverse matrix.

Calculate inverse matrix. Use pre-calculated determinant det.

inverse() [2/2]

Mat3D Mat3D::inverse

(

void

)

const

Return inverse matrix.

Throws an error if determinant is zero. For more thorough checking (determinant close to zero, for example), see the other form of inverse().

operator()() [1/4]

double& Mat3D::operator() ( int  i )

inline

Indexing for matrix.

Returns a reference to i element, where i is the index in row-first order. No checking performed - not a safe function.

operator()() [2/4]

const double& Mat3D::operator() ( int  i ) const

inline

Indexing for constant matrix.

Returns a reference to i element, where i is the index in row-first order. No checking performed - not a safe function.

operator()() [3/4]

double& Mat3D::operator() ( int  i, int  j  )

inline

Indexing for matrix.

Returns a reference to (i,j) element, where i is the row and j is the column number. No checking performed - not a safe function.

operator()() [4/4]

const double& Mat3D::operator() ( int  i, int  j  ) const

inline

Indexing for matrix.

Returns a reference to (i,j) element, where i is the row and j is the column number. No checking performed - not a safe function.

operator*()

Vec3D Mat3D::operator*

(

const Vec3D &

x

)

const

Matrix-vector multiplication.

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  os, const Mat3D &  m  )

friend

Outputting to stream.

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

• mat3d.hpp
• mat3d.cpp