A matrix math class for 4x4 matrices of floats. More...

#include <MFloatMatrix.h>

Public Member Functions
	MFloatMatrix ()
	The default contstructor. More...

	MFloatMatrix (const MFloatMatrix &src)
	The copy Constructor. More...

	MFloatMatrix (const double m[4][4])
	Initialize the instance with a 4x4 matrix of doubles. More...

	MFloatMatrix (const float m[4][4])
	Initialize the instance with a 4x4 matrix of floats. More...

	~MFloatMatrix ()
	The class destructor.

MFloatMatrix &	operator= (const MFloatMatrix &)
	The assignment operator. More...

float	operator() (unsigned int row, unsigned int col) const
	Index operator. More...

const float *	operator[] (unsigned int row) const
	Index operator. More...

MStatus	get (double dest[4][4]) const
	Fill a 4x4 matrix of doubles with the elements from the instance. More...

MStatus	get (float dest[4][4]) const
	Fill a 4x4 matrix of floats with the elements from the instance. More...

MFloatMatrix	transpose () const
	Compute and return the transpose of this instance. More...

MFloatMatrix &	setToIdentity ()
	Set this instance to the 4x4 identity matrix. More...

MFloatMatrix &	setToProduct (const MFloatMatrix &left, const MFloatMatrix &right)
	Set this instance to the inner product of the two argument matrices. More...

MFloatMatrix &	operator+= (const MFloatMatrix &right)
	The in place matrix addition operator. More...

MFloatMatrix	operator+ (const MFloatMatrix &right) const
	The matrix addition operator. More...

MFloatMatrix &	operator-= (const MFloatMatrix &right)
	The in place matrix subtraction operator. More...

MFloatMatrix	operator- (const MFloatMatrix &right) const
	The matrix subtraction operator. More...

MFloatMatrix &	operator*= (const MFloatMatrix &right)
	The in place matrix multiplication operator. More...

MFloatMatrix	operator* (const MFloatMatrix &right) const
	The matrix multiplication operator. More...

MFloatMatrix &	operator*= (float)
	The in place matrix multiply by a scalar operator. More...

MFloatMatrix	operator* (float) const
	The matrix multiply by a scalar operator. More...

bool	operator== (const MFloatMatrix &other) const
	The matrix equality operator. More...

bool	operator!= (const MFloatMatrix &other) const
	The matrix inequality operator. More...

MFloatMatrix	inverse () const
	Compute and return the inverse of this instance. More...

MFloatMatrix	adjoint () const
	Compute and return the adjoint of this instance. More...

MFloatMatrix	homogenize () const
	Compute and return a homogenized version of this instance. More...

float	det4x4 () const
	Compute and return the determinant of this instance. More...

float	det3x3 () const
	Compute and return the determinant of the upper left 3x3 submatrix of this instance. More...

bool	isEquivalent (const MFloatMatrix &other, float tolerance=MFloatMatrix_kTol) const
	Determine if the given matrix is equivalent to this instance within the specified tolerance. More...

float &	operator() (unsigned int row, unsigned int col)
	NO SCRIPT SUPPORT. More...

float *	operator[] (unsigned int row)
	NO SCRIPT SUPPORT. More...

Static Public Member Functions
static const char *	className ()
	Returns the name of this class. More...

Public Attributes
float	matrix [4][4]
	the matrix data

Friends
OPENMAYA_EXPORT MFloatMatrix	operator* (float, const MFloatMatrix &right)
	NO SCRIPT SUPPORT. More...

OPENMAYA_EXPORT std::ostream &	operator<< (std::ostream &os, const MFloatMatrix &m)
	NO SCRIPT SUPPORT. More...

Detailed Description

A matrix math class for 4x4 matrices of floats.

This class provides access to Maya's internal matrix math library allowing matrices to be handled easily, and in a manner compatible with internal Maya data structures.

Examples:: animInfoCmd/animInfoCmd.cpp, anisotropicShader/anisotropicShader.cpp, cellShader/cellShader.cpp, flameShader/flameShader.cpp, lavaShader/lavaShader.cpp, noiseShader/noiseShader.cpp, sampleCmd/sampleCmd.cpp, sampleParticles/sampleParticles.cpp, slopeShader/slopeShaderNode.cpp, and solidCheckerShader/solidCheckerShader.cpp.

Constructor & Destructor Documentation

OPENMAYA_MAJOR_NAMESPACE_OPEN MFloatMatrix ( )

The default contstructor.

The instance is initialized to the 4x4 identity matrix.

MFloatMatrix ( const MFloatMatrix & src )

The copy Constructor.

Parameters

[in] src the instance to copy data from

MFloatMatrix ( const double src_matrix[4][4] )

Initialize the instance with a 4x4 matrix of doubles.

Parameters

[in] src_matrix a 4x4 matrix of doubles

MFloatMatrix ( const float src_matrix[4][4] )

Initialize the instance with a 4x4 matrix of floats.

Parameters

[in] src_matrix a 4x4 matrix of floats

Member Function Documentation

MFloatMatrix & operator= ( const MFloatMatrix & src )

The assignment operator.

Parameters

[in] src The matrix to copy from.

Returns: A reference to this matrix.

float operator()	(	unsigned int	row,
		unsigned int	col
	)		const

inline

Index operator.

Given row and column indices, it will return the value at the specified location in the matrix.

Parameters

[in]	row	index of the row to access
[in]	col	index of the column to access

Returns

the value at the specified location in the matrix.

const float * operator[] ( unsigned int row ) const

inline

Index operator.

Returns an entire row of the matrix as an array of floats.

Parameters

[in] row index of the row to access

Returns

float array containing the values of the specified row

MStatus get ( double dest[4][4] ) const

Fill a 4x4 matrix of doubles with the elements from the instance.

Parameters

[out] dest the 4x4 matrix of doubles to populate

Returns: MS::kSuccess if successful and MS::kFailure otherwise.

MStatus get ( float dest[4][4] ) const

Fill a 4x4 matrix of floats with the elements from the instance.

Parameters

[out] dest The 4x4 matrix of floats to populate.

Returns: MS::kSuccess if successful and MS::kFailure otherwise.

MFloatMatrix transpose ( ) const

Compute and return the transpose of this instance.

Returns: The transposed matrix

MFloatMatrix & setToIdentity ( )

Set this instance to the 4x4 identity matrix.

Returns: A reference to this matrix.

MFloatMatrix & setToProduct	(	const MFloatMatrix &	left,
		const MFloatMatrix &	right
	)

Set this instance to the inner product of the two argument matrices.

Parameters

[in]	left	The left hand matrix for the operation
[in]	right	The right hand matrix for the operation

Returns: A reference to the result.

MFloatMatrix & operator+= ( const MFloatMatrix & right )

The in place matrix addition operator.

Parameters

[in] right Matrix to add.

Returns: A reference to the result.

MFloatMatrix operator+ ( const MFloatMatrix & right ) const

The matrix addition operator.

Parameters

[in] right Matrix to add.

Returns: Sum of both matrices.

MFloatMatrix & operator-= ( const MFloatMatrix & right )

The in place matrix subtraction operator.

Parameters

[in] right Matrix to subtract.

Returns: A reference to the result.

MFloatMatrix operator- ( const MFloatMatrix & right ) const

The matrix subtraction operator.

Parameters

[in] right Matrix to subtract.

Returns: Difference of both matrices.

MFloatMatrix & operator*= ( const MFloatMatrix & right )

The in place matrix multiplication operator.

Parameters

[in] right Matrix to multiply.

Returns: A reference to the result.

MFloatMatrix operator* ( const MFloatMatrix & right ) const

The matrix multiplication operator.

Parameters

[in] right Matrix to multiply.

Returns: Product of both matrices.

MFloatMatrix & operator*= ( float factor )

The in place matrix multiply by a scalar operator.

Parameters

[in] factor scaling factor.

Returns: A reference to the result.

MFloatMatrix operator* ( float factor ) const

The matrix multiply by a scalar operator.

Parameters

[in] factor Scaling factor.

Returns: Scaled matrix.

bool operator== ( const MFloatMatrix & other ) const

The matrix equality operator.

Parameters

[in] other Matrix to test with.

Returns: True is the matrices are identical.

bool operator!= ( const MFloatMatrix & other ) const

The matrix inequality operator.

Parameters

[in] other Matrix to test with.

Returns: True is the matrices are not identical.

MFloatMatrix inverse ( ) const

Compute and return the inverse of this instance.

Returns: The inverted matrix

MFloatMatrix adjoint ( ) const

Compute and return the adjoint of this instance.

Returns: The adjoint of this matrix

MFloatMatrix homogenize ( ) const

Compute and return a homogenized version of this instance.

Returns: The homogenized matrix

float det4x4 ( ) const

Compute and return the determinant of this instance.

Returns: The determinant

float det3x3 ( ) const

Compute and return the determinant of the upper left 3x3 submatrix of this instance.

Returns: The determinant

bool isEquivalent	(	const MFloatMatrix &	other,
		float	tolerance = `MFloatMatrix_kTol`
	)		const

Determine if the given matrix is equivalent to this instance within the specified tolerance.

Parameters

[in]	other	the matrix to compare to
[in]	tolerance	the tolerance to use during the comparison

Returns: True if the matrices are equivalent and false otherwise

float & operator()	(	unsigned int	row,
		unsigned int	col
	)

inline

NO SCRIPT SUPPORT.

Index operator.

Given row and column indices, it will return the value at the specified location in the matrix.

Parameters

[in]	row	index of the row to access
[in]	col	index of the column to access

Returns

the value at the specified location in the matrix.

float * operator[] ( unsigned int row )

inline

NO SCRIPT SUPPORT.

Index operator.

Returns an entire row of the matrix as an array of floats.

Parameters

[in] row index of the row to access

Returns

float array containing the values of the specified row

const char * className ( )

static

Returns the name of this class.

Returns: The name of this class.

Friends And Related Function Documentation

OPENMAYA_EXPORT MFloatMatrix operator*	(	float	factor,
		const MFloatMatrix &	right
	)

friend

NO SCRIPT SUPPORT.

Parameters

[in]	factor	Scaling factor.
[in]	right	Matrix to multiply.

Returns: Scaled matrix.

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

friend

NO SCRIPT SUPPORT.

The format used is [[r11, r12, r13, r14] [r21, r22, r23, r24] [r31, r32, r33, r34] [r41, r42, r43, r44]].

Parameters

[in]	os	the ostream to print to
[in]	m	the MFloatMatrix whose value is to be printed

Returns: The ostream reference, s, provided as the first parameter.

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

MFloatMatrix.h
MFloatMatrix.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation