Matrix4x4 Class Reference

#include <matrix4x4.h>

List of all members.

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Detailed Description

A class that contains a 4x4 matrix.

Assumes matrix is affine - including affine code now. This means that the bottow row of the matrix should be [0 0 0 1]

Public Member Functions
	Matrix4x4 ()
	Constructor just creates identity matrix.
	~Matrix4x4 ()
	Empty destructor.
	Matrix4x4 (const Matrix4x4 &other)
	Copy constructor.
Matrix4x4 &	operator= (const Matrix4x4 &other)
	Equal, like copy.
Matrix4x4	operator+ (const Matrix4x4 &other) const
	Adding time.
Matrix4x4 &	operator+= (const Matrix4x4 &other)
	Adding again.
Matrix4x4	operator- (const Matrix4x4 &other) const
	Subtracting is fun too.
Matrix4x4 &	operator-= (const Matrix4x4 &other)
	More subtracting.
Matrix4x4	operator * (const float other) const
	Multiplication of scalar is simple.
Matrix4x4 &	operator *= (const float other)
	More multiplication.
Matrix4x4	operator * (const Matrix4x4 &o) const
	Multiplication operator.
Matrix4x4 &	operator *= (const Matrix4x4 &o)
	Multiplication operator.
float &	operator() (unsigned int i, unsigned int j)
	Indexing operator.
float	operator() (unsigned int i, unsigned int j) const
	Indexing operator.
bool	operator== (Matrix4x4 &other)
	Comparator.
bool	operator!= (Matrix4x4 &other)
	Comparator.
bool	isAffine (void)
	This checks if matrix is affine.
void	scale (float xin, float yin, float zin)
	Multiply the matrix by a scaling affine.
void	trans (float xin, float yin, float zin)
	Multiply the matrix by a translation affine.
void	rotate (float xin, float yin, float zin)
	Multiply the matrix by a rotation affine.
void	scale (Vec4 in)
	Multiply the matrix by a scaling affine.
void	trans (Vec4 in)
	Multiply the matrix by a translation affine.
void	rotate (Vec4 in)
	Multiply the matrix by a rotation affine.
void	rotX (float in)
	Multiply the matrix by a rotation affine about X.
void	rotY (float in)
	Multiply the matrix by a rotation affine about Y.
void	rotZ (float in)
	Multiply the matrix by a rotation affine about Z.
void	makeScale (float xin, float yin, float zin)
	Create a scaling affine.
void	makeTrans (float xin, float yin, float zin)
	Create a translation affine.
void	makeRotate (float xin, float yin, float zin)
	Create a rotation affine.
void	makeScale (Vec4 in)
	Create scaling matrix (from Vec4).
void	makeRotate (Vec4 in)
	Create a rotation affine (from Vec4).
void	makeRotX (float in)
	Create a rotation affine about X.
void	makeRotY (float in)
	Create a rotation affine about Y.
void	makeRotZ (float in)
	Create a rotation affine about Z.
void	invert (void)
	Inverts a matrix on itself.
void	transpose (void)
	Transpose the 4x4 matrix.
void	Identity (void)
	Sets the matrix to an identity matrix.
void	Zero (void)
	Sets the whole matrix to zero.
void	Print (void)
	Print matrix to cout.
void	Clean (void)
	Replace all near-zero values with zero.
Public Attributes
float	m [16]
	The matrix itself is publically available, so can be passed to OpenGL easily.

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Member Function Documentation

bool Matrix4x4::isAffine (  void   )

This checks if matrix is affine. In this case this means checking the bottom row for the assumptions that we make. Returns: True for affine, False otherwise.

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Matrix4x4 Matrix4x4::operator * (  const Matrix4x4 &  o  )  const

Multiplication operator. WARNING: Assumes affine matrix.

Matrix4x4 & Matrix4x4::operator *= (  const Matrix4x4 &  o  )

Multiplication operator. WARNING: Assumes affine matrix.

bool Matrix4x4::operator!= (  Matrix4x4 &  other  )

Comparator. Iterates through the matrix, checking for an exact match. Parameters: other  Matrix to compare with. Returns: False if any cell is not equal with its mate.

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float Matrix4x4::operator() (  unsigned int  i, unsigned int  j )  const [inline]

Indexing operator. This takes indices into the matrix and returns a copy of the correct cell. This solves the problem of the arry being stored in a human-unfriendly column-major format. Parameters: i  Down. j  Across. Returns: Copy of cell.

float & Matrix4x4::operator() (  unsigned int  i, unsigned int  j )  [inline]

Indexing operator. This takes indices into the matrix and returns a reference to the correct cell. This solves the problem of the arry being stored in a human-unfriendly column-major format. Parameters: i  Down. j  Across. Returns: Changable reference.

bool Matrix4x4::operator== (  Matrix4x4 &  other  )

Comparator. Iterates through the matrix, checking for an exact match. Parameters: other  Matrix to compare with. Returns: True iff all cells are equal.

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void Matrix4x4::transpose (  void   )

Transpose the 4x4 matrix. No assumptions made.

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

• matrix4x4.h
• matrix4x4.cpp

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