Public API Reference

csMatrix2 Class Reference
[Geometry utilities]

A 2x2 matrix. More...

#include <csgeom/matrix2.h>

List of all members.

Public Member Functions
csVector2	Col1 () const
	Get the first column of this matrix as a vector.
csVector2	Col2 () const
	Get the second column of this matrix as a vector.
	csMatrix2 (float m11, float m12, float m21, float m22)
	Construct a matrix and initialize it.
	csMatrix2 ()
	Construct a matrix, initialized to be the identity.
float	Determinant () const
	Compute the determinant of this matrix.
csMatrix2	GetInverse () const
	Return the inverse of this matrix.
csMatrix2	GetTranspose () const
	Return the transpose of this matrix.
void	Identity ()
	Set this matrix to the identity matrix.
void	Invert ()
	Invert this matrix.
csMatrix2 &	operator *= (float s)
	Multiply this matrix with a scalar.
csMatrix2 &	operator *= (const csMatrix2 &m)
	Multiply another matrix with this matrix.
csMatrix2	operator+ () const
	Unary + operator.
csMatrix2 &	operator+= (const csMatrix2 &m)
	Add another matrix to this matrix.
csMatrix2	operator- () const
	Unary - operator.
csMatrix2 &	operator-= (const csMatrix2 &m)
	Subtract another matrix from this matrix.
csMatrix2 &	operator/= (float s)
	Divide this matrix by a scalar.
csVector2	Row1 () const
	Get the first row of this matrix as a vector.
csVector2	Row2 () const
	Get the second row of this matrix as a vector.
void	Set (float m11, float m12, float m21, float m22)
	Set matrix values.
void	Transpose ()
	Transpose this matrix.
Public Attributes
float	m11
float	m12
float	m21
float	m22
Friends
csMatrix2	operator * (float f, const csMatrix2 &m)
	Multiply a matrix and a scalar.
csMatrix2	operator * (const csMatrix2 &m, float f)
	Multiply a matrix and a scalar.
csVector2	operator * (const csMatrix2 &m, const csVector2 &v)
	Multiply a vector by a matrix (transform it).
csMatrix2	operator * (const csMatrix2 &m1, const csMatrix2 &m2)
	Multiply two matricies.
csMatrix2	operator+ (const csMatrix2 &m1, const csMatrix2 &m2)
	Add two matricies.
csMatrix2	operator- (const csMatrix2 &m1, const csMatrix2 &m2)
	Subtract two matricies.
csMatrix2	operator/ (const csMatrix2 &m, float f)
	Divide a matrix by a scalar.

---

Detailed Description

A 2x2 matrix.

Definition at line 37 of file matrix2.h.

---

Constructor & Destructor Documentation

csMatrix2::csMatrix2

(

)

Construct a matrix, initialized to be the identity.

csMatrix2::csMatrix2	(	float	m11,
		float	m12,
		float	m21,
		float	m22
	)

Construct a matrix and initialize it.

---

Member Function Documentation

csVector2 csMatrix2::Col1

(

)

const [inline]

Get the first column of this matrix as a vector.

Definition at line 58 of file matrix2.h.

csVector2 csMatrix2::Col2

(

)

const [inline]

Get the second column of this matrix as a vector.

Definition at line 61 of file matrix2.h.

float csMatrix2::Determinant

(

)

const

Compute the determinant of this matrix.

csMatrix2 csMatrix2::GetInverse

(

)

const [inline]

Return the inverse of this matrix.

Definition at line 101 of file matrix2.h.

csMatrix2 csMatrix2::GetTranspose

(

)

const

Return the transpose of this matrix.

void csMatrix2::Identity

(

)

Set this matrix to the identity matrix.

void csMatrix2::Invert

(

)

[inline]

Invert this matrix.

Definition at line 109 of file matrix2.h.

csMatrix2& csMatrix2::operator *=

(

float

s

)

Multiply this matrix with a scalar.

csMatrix2& csMatrix2::operator *=

(

const csMatrix2 &

m

)

Multiply another matrix with this matrix.

csMatrix2 csMatrix2::operator+

(

)

const [inline]

Unary + operator.

Definition at line 87 of file matrix2.h.

csMatrix2& csMatrix2::operator+=

(

const csMatrix2 &

m

)

Add another matrix to this matrix.

csMatrix2 csMatrix2::operator-

(

)

const [inline]

Unary - operator.

Definition at line 89 of file matrix2.h.

csMatrix2& csMatrix2::operator-=

(

const csMatrix2 &

m

)

Subtract another matrix from this matrix.

csMatrix2& csMatrix2::operator/=

(

float

s

)

Divide this matrix by a scalar.

csVector2 csMatrix2::Row1

(

)

const [inline]

Get the first row of this matrix as a vector.

Definition at line 52 of file matrix2.h.

csVector2 csMatrix2::Row2

(

)

const [inline]

Get the second row of this matrix as a vector.

Definition at line 55 of file matrix2.h.

void csMatrix2::Set	(	float	m11,
		float	m12,
		float	m21,
		float	m22
	)			[inline]

Set matrix values.

Definition at line 64 of file matrix2.h.

References m11, m12, m21, and m22.

void csMatrix2::Transpose

(

)

Transpose this matrix.

---

Friends And Related Function Documentation

csMatrix2 operator *	(	float	f,
		const csMatrix2 &	m
	)			[friend]

Multiply a matrix and a scalar.

csMatrix2 operator *	(	const csMatrix2 &	m,
		float	f
	)			[friend]

Multiply a matrix and a scalar.

csVector2 operator *	(	const csMatrix2 &	m,
		const csVector2 &	v
	)			[friend]

Multiply a vector by a matrix (transform it).

Definition at line 125 of file matrix2.h.

csMatrix2 operator *	(	const csMatrix2 &	m1,
		const csMatrix2 &	m2
	)			[friend]

Multiply two matricies.

csMatrix2 operator+	(	const csMatrix2 &	m1,
		const csMatrix2 &	m2
	)			[friend]

Add two matricies.

csMatrix2 operator-	(	const csMatrix2 &	m1,
		const csMatrix2 &	m2
	)			[friend]

Subtract two matricies.

csMatrix2 operator/	(	const csMatrix2 &	m,
		float	f
	)			[friend]

Divide a matrix by a scalar.

---

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

• csgeom/matrix2.h

---