Enki::Matrix22 Struct Reference

A 2x2 matrix. More...

#include <Geometry.h>

Public Member Functions
	Matrix22 ()
	Constructor, create matrix with 0.
	Matrix22 (double _11, double _21, double _12, double _22)
	Constructor, create matrix with _11 _21 _12 _22.
	Matrix22 (double alpha)
	Constructor, create rotation matrix of angle alpha in radian.
	Matrix22 (double array[4])
	Constructor, create matrix with array[0] array[1] array[2] array[3].
void	zeros ()
	Fill with zero.
void	operator+= (const Matrix22 &v)
	Add matrix v component by component.
void	operator-= (const Matrix22 &v)
	Substract matrix v component by component.
void	operator*= (double f)
	Multiply each component by scalar f.
void	operator/= (double f)
	Divive each component by scalar f.
Matrix22	operator+ (const Matrix22 &v) const
	Add matrix v component by component and return the resulting matrix.
Matrix22	operator- (const Matrix22 &v) const
	Subtract matrix v component by component and return the resulting matrix.
Matrix22	operator* (double f) const
	Multiply each component by scalar f and return the resulting matrix.
Matrix22	operator/ (double f) const
	Divide each component by scalar f and return the resulting matrix.
Matrix22	transpose () const
	Return the transpose of the matrix.
Point	operator* (const Point &v) const
	Multiply vector v and return the resulting vector.

Static Public Member Functions
static Matrix22	fromDiag (double _1, double _2)
	Creates a diagonal matrix.
static Matrix22	identity ()
	Create an identity matrix.

Public Attributes
double	_11
	11 components
double	_21
	21 components
double	_12
	12 components
double	_22
	22 components

Detailed Description

A 2x2 matrix.

Notation of values and constructor order arguments are column based:

a c
b d

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

• enki/Geometry.h