Nimble::Matrix2T< T > Class Template Reference

2x2 transformation matrix More...

#include <Nimble/Matrix2.hpp>

Public Types
typedef T	type
	Data-type of the matrix.

Public Member Functions
void	add (T v)
	Adds the given scalar to each element.
void	clear ()
	Set all matrix elements to zero.
Nimble::Vector2T< T >	column (int i) const
	Returns a copy of a column.
T *	data ()
	Returns a pointer to the matrix data.
const T *	data () const
	Returns a constant pointer to the matrix data.
float	det () const
	Returns the determinant of the matrix.
T	get (int r, int c) const
	Gets the given matrix element.
void	identity ()
	Create an identity matrix.
Matrix2T	inverse (bool *ok=0, T tolerance=1.0e-8) const
	Returns the inverse of the matrix.
void	make (T v11, T v12, T v21, T v22)
	Fills the matrix with the given values.
	Matrix2T ()
	Creates a matrix without initializing the elements.
	Matrix2T (T v11, T v12, T v21, T v22)
	Constructs a matrix and initializes it to the given values.
	Matrix2T (const Matrix2T &that)
	Copy constructor.
template<class K >
	Matrix2T (const Vector2T< K > &r1, const Vector2T< K > &r2)
	Creates a matrix and initializes it with the given row vectors.
bool	operator!= (const Matrix2T &other) const
	Compare if two matrices are not equal Compares each element of this matrix to the given matrix. More...
Matrix2T	operator*= (T s)
	Multiplies the matrix by a scalar.
bool	operator== (const Matrix2T &other) const
	Compare if two matrices are equal Compares each element of this matrix to the given matrix. More...
Nimble::Vector2T< T > &	operator[] (int i)
	Returns a reference to a row.
const Nimble::Vector2T< T > &	operator[] (int i) const
	Returns a constant reference to a row.
void	rotate (T)
	Create a rotation matrix. More...
Nimble::Vector2T< T > &	row (int i)
	Returns a reference to a row.
const Nimble::Vector2T< T > &	row (int i) const
	Returns a constant reference to a row.
void	scale (T s)
	Create a scaling matrix.
void	set (int r, int c, T v)
	Sets the given matrix element.
void	transpose ()
	Transpose this matrix.
Matrix2T	transposed () const
	Transpose this matrix.
	~Matrix2T ()
	Empty destructor. More...

Static Public Member Functions
static int	columns ()
	Returns the number of columns in this matrix type.
static Matrix2T	makeRotation (T r)
	Returns a rotation matrix.
static Matrix2T	makeScale (T s)
	Returns a scaling matrix.
static int	rows ()
	Returns the number of rows in this matrix type.

Static Public Attributes
static const Matrix2T< T >	IDENTITY

Detailed Description

template<class T>
class Nimble::Matrix2T< T >

2x2 transformation matrix

The rows of this matrix are of type Nimble::Vector2T<T>.

Constructor & Destructor Documentation

template<class T >

Nimble::Matrix2T< T >::~Matrix2T ( )

inline

Empty destructor.

This method is defined because otherwise some compilers might complain. We expect that a decent compiler knows how to eliminate this function.

Member Function Documentation

template<class T >

bool Nimble::Matrix2T< T >::operator!= ( const Matrix2T< T > &  other ) const

inline

Compare if two matrices are not equal Compares each element of this matrix to the given matrix.

Parameters

other

matrix to compare to

Returns

true if the matrices differ

template<class T >

bool Nimble::Matrix2T< T >::operator== ( const Matrix2T< T > &  other ) const

inline

Compare if two matrices are equal Compares each element of this matrix to the given matrix.

Parameters

other

matrix to compare to

Returns

true if the matrices are the same

template<class T >

void Nimble::Matrix2T< T >::rotate ( T  a )

inline

Create a rotation matrix.

Creates a rotation matrix.

Parameters

a	rotation in radians