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

#include <MMatrix.h>

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

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

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

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

	~MMatrix ()
	The class destructor.

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

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

const double *	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...

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

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

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

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

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

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

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

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

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

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

MMatrix	operator* (double) const
	The matrix multiply by a scalar operator. More...

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

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

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

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

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

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

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

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

bool	isSingular () const
	Determines if the given matrix is singular. More...

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

double *	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
double	matrix [4][4]
	The matrix data.

Static Public Attributes
static const MMatrix	identity
	The identity matrix.

Friends
OPENMAYA_EXPORT MMatrix	operator* (double, const MMatrix &right)
	NO SCRIPT SUPPORT. More...

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

Detailed Description

A matrix math class for 4x4 matrices of doubles.

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.

All methods that query the matrix are threadsafe, all methods that modify the matrix are not threadsafe.

Examples:: AbcBullet/AttributesWriter.cpp, AbcBullet/MayaTransformCollectionWriter.cpp, AbcBullet/MayaTransformCollectionWriter.h, AbcExport/AbcWriteJob.cpp, AbcExport/AbcWriteJob.h, AbcExport/AttributesWriter.cpp, AbcExport/MayaNurbsCurveWriter.cpp, AbcImport/XformHelper.cpp, apiMeshShape/apiMeshShape.cpp, apiMeshShape/apiMeshShape.h, apiMeshShape/apiMeshShapeUI.cpp, apiMeshShape/apiMeshSubSceneOverride.cpp, apiMeshShape/apiMeshSubSceneOverride.h, basicBlendShape/basicBlendShape.cpp, basicSkinCluster/basicSkinCluster.cpp, cgFx/cgfxAttrDef.cpp, cgFx/cgfxAttrDef.h, cgFx/cgfxShaderNode.cpp, cgFx/cgfxVector.cpp, closestPointCmd/closestPointCmd.cpp, closestPointOnNurbsSurfaceCmd/closestPointOnNurbsSurfaceCmd.cpp, constraintEvaluator/constraintEvaluator.cpp, cvColorNode/cvColorNode.cpp, dagPoseInfoCmd/dagPoseInfoCmd.cpp, dx11Shader/dx11Shader.cpp, dx11Shader/dx11Shader.h, footPrintNode_SubSceneOverride/footPrintNode_SubSceneOverride.cpp, glslShader/GLSLShader.cpp, gpuCache/CacheReaderAlembic.cpp, gpuCache/CacheReaderAlembic.h, gpuCache/CacheWriter.cpp, gpuCache/CacheWriter.h, gpuCache/CacheWriterAlembic.cpp, gpuCache/gpuCacheCmd.cpp, gpuCache/gpuCacheDrawOverride.cpp, gpuCache/gpuCacheDrawTraversal.h, gpuCache/gpuCacheFrustum.cpp, gpuCache/gpuCacheFrustum.h, gpuCache/gpuCacheGLPickingSelect.cpp, gpuCache/gpuCacheIsectUtil.cpp, gpuCache/gpuCacheRasterSelect.cpp, gpuCache/gpuCacheSample.cpp, gpuCache/gpuCacheSample.h, gpuCache/gpuCacheShapeNode.cpp, gpuCache/gpuCacheSubSceneOverride.cpp, gpuCache/gpuCacheUnitBoundingBox.cpp, gpuCache/gpuCacheUnitBoundingBox.h, gpuCache/gpuCacheVBOProxy.cpp, hlslShader/hlslShader.cpp, hwPhongShader/hwPhongShader.cpp, identityGeomFilter/identityGeomFilter.cpp, identityNode/identityNode.cpp, instancerListCmd/instancerListCmd.cpp, intersectOnNurbsSurfaceCmd/intersectOnNurbsSurfaceCmd.cpp, lensDistortionCallback/lensDistortionCallback.cpp, manipOverride/rockingTransform2.cpp, manipOverride/rockingTransform2.h, MayaPluginForSpreticle/spReticleLoc.cpp, MayaPluginForSpreticle/spReticleLoc.h, offsetNode/offsetNode.cpp, ownerEmitter/ownerEmitter.cpp, rawfootPrintNode/rawfootPrintNode.cpp, richMoveCmd/richMoveCmd.cpp, rockingTransform/rockingTransform.cpp, rockingTransform/rockingTransform.h, rockingTransformCheck/rockingTransform.cpp, rockingTransformCheck/rockingTransform.h, sampleCmd/sampleCmd.cpp, sampleParticles/sampleParticles.cpp, simpleEmitter/simpleEmitter.cpp, simpleFluidEmitter/simpleFluidEmitter.cpp, simpleFluidEmitter/simpleFluidEmitter.h, surfaceTwistCmd/surfaceTwistCmd.cpp, sweptEmitter/sweptEmitter.cpp, swissArmyManip/swissArmyManip.cpp, torusField/torusField.cpp, viewDX11DeviceAccess/viewDX11DeviceAccess.cpp, viewRenderOverride/viewRenderOverrideOperations.cpp, viewRenderOverride/viewRenderOverrideUserOperation.cpp, viewRenderOverridePointLightShadows/viewRenderOverridePointLightShadows.cpp, viewRenderOverrideShadows/viewRenderOverrideShadows.cpp, and yTwistNode/yTwistNode.cpp.

Constructor & Destructor Documentation

MMatrix ( )

The default contstructor.

The instance is initialized to the 4x4 identity matrix.

MMatrix ( const MMatrix & src )

The copy Constructor.

Parameters

[in] src Matrix to copy data from

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

Initialize the instance with a 4x4 matrix of doubles.

Parameters

[in] src_matrix 4x4 matrix of doubles

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

Initialize the instance with a 4x4 matrix of floats.

Parameters

[in] src_matrix 4x4 matrix of floats

Member Function Documentation

MMatrix & operator= ( const MMatrix & src )

The assignment operator.

Parameters

[in] src Matrix whose value will be assigned to this one.

Returns: This matrix.

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

inline

Index operator.

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

Parameters

[in] row index of the row to access

Returns

double 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 4x4 matrix of doubles to populate

Returns: MS::kSuccess when success, MS::kFailure otherwise

Examples:: cgFx/cgfxShaderNode.cpp, cgFx/cgfxVector.cpp, dx11Shader/dx11Shader.cpp, glslShader/GLSLShader.cpp, gpuCache/gpuCacheCmd.cpp, and viewRenderOverride/viewRenderOverrideUserOperation.cpp.

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

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

Parameters

[out] dest 4x4 matrix of floats to populate

Returns: MS::kSuccess when success, MS::kFailure otherwise

MMatrix transpose ( ) const

Compute and return the transpose of this instance.

Returns: The transposed matrix

Examples:: cgFx/cgfxShaderNode.cpp, gpuCache/gpuCacheCmd.cpp, and offsetNode/offsetNode.cpp.

MMatrix & setToIdentity ( )

Set this instance to the 4x4 identity matrix.

Returns: This matrix.

Examples:: AbcExport/AbcWriteJob.cpp, cgFx/cgfxShaderNode.cpp, gpuCache/gpuCacheIsectUtil.cpp, and gpuCache/gpuCacheShapeNode.cpp.

MMatrix & setToProduct	(	const MMatrix &	left,
		const MMatrix &	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: This matrix.

MMatrix & operator+= ( const MMatrix & right )

The in place matrix addition operator.

Modifies this matrix.

Parameters

[in] right Matrix to add.

Returns: This matrix.

MMatrix operator+ ( const MMatrix & right ) const

The matrix addition operator.

Does not modify this matrix.

Parameters

[in] right Matrix to add to this one.

Returns: New matrix containing the result.

MMatrix & operator-= ( const MMatrix & right )

The in place matrix subtraction operator.

Modifies this matrix.

Parameters

[in] right Matrix to add to this one.

Returns: This matrix.

MMatrix operator- ( const MMatrix & right ) const

The matrix subtraction operator.

Does not modify this matrix.

Parameters

[in] right Matrix to subtract from this one.

Returns: New matrix containing the result.

MMatrix & operator*= ( const MMatrix & right )

The in place matrix multiplication operator.

Modifies this matrix.

Parameters

[in] right Matrix to multiply this one by.

Returns: This matrix.

MMatrix operator* ( const MMatrix & right ) const

The matrix multiplication operator.

Does not modify this matrix.

Parameters

[in] right Matrix to multiply this one by.

Returns: New matrix containing the result.

MMatrix & operator*= ( double factor )

The in place matrix multiply by a scalar operator.

Modifies this matrix.

Parameters

[in] factor Scalar to multiply this matrix by.

Returns: This matrix.

MMatrix operator* ( double factor ) const

The matrix multiply by a scalar operator.

Does not modify this matrix.

Parameters

[in] factor Scalar to multiply this matrix by.

Returns: New matrix containing the result.

bool operator== ( const MMatrix & other ) const

The matrix equality operator.

The matrices must be identical.

Parameters

[in] other Matrix to compare against.

Returns: True if other contains the same values as this matrix, false otherwise.

bool operator!= ( const MMatrix & other ) const

The matrix inequality operator.

Parameters

[in] other Matrix to compare against.

Returns: False if other contains the same values as this matrix, true otherwise.

MMatrix inverse ( ) const

Compute and return the inverse of this instance.

Returns: The inverted matrix

Examples:: apiMeshShape/apiMeshShape.cpp, apiMeshShape/apiMeshSubSceneOverride.cpp, cgFx/cgfxShaderNode.cpp, footPrintNode_SubSceneOverride/footPrintNode_SubSceneOverride.cpp, gpuCache/gpuCacheCmd.cpp, gpuCache/gpuCacheGLPickingSelect.cpp, gpuCache/gpuCacheIsectUtil.cpp, gpuCache/gpuCacheRasterSelect.cpp, gpuCache/gpuCacheShapeNode.cpp, offsetNode/offsetNode.cpp, and simpleFluidEmitter/simpleFluidEmitter.cpp.

MMatrix adjoint ( ) const

Compute and return the adjoint of this instance.

Returns: The adjoint of this matrix

MMatrix homogenize ( ) const

Compute and return a homogenized version of this instance.

Returns: The homogenized matrix

double det4x4 ( ) const

Compute and return the determinant of this instance.

Returns: The determinant

double det3x3 ( ) const

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

Returns: The determinant

Examples:: gpuCache/gpuCacheCmd.cpp, gpuCache/gpuCacheDrawOverride.cpp, and gpuCache/gpuCacheSample.h.

bool isEquivalent	(	const MMatrix &	other,
		double	tolerance = `MMatrix_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

Examples:: gpuCache/gpuCacheCmd.cpp.

bool isSingular ( ) const

Determines if the given matrix is singular.

Returns: True if the matrix is singular and false otherwise

double & 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.

double * operator[] ( unsigned int row )

inline

NO SCRIPT SUPPORT.

Index operator.

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

Parameters

[in] row index of the row to access

Returns

double 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 MMatrix operator*	(	double	factor,
		const MMatrix &	right
	)

friend

NO SCRIPT SUPPORT.

Does not modify this matrix.

Parameters

[in]	factor	Scalar to multiply this matrix by.
[in]	right	This matrix.

Returns: New matrix containing the result.

OPENMAYA_EXPORT std::ostream& operator<<	(	std::ostream &	os,
		const MMatrix &	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 MMatrix whose value is to be printed

Returns: Reference to output stream (os) to allow chaining of operations.

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

MMatrix.h
MMatrix.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation