#include <MTransformationMatrix.h>

Class Description

Transformation matrix.

An MTransformationMatrix allows the manipulation of the individual transformation components (eg scale, rotation, shear, etc) of a four by four transformation matrix.

The transformation in the node is represented as a 4x4 transformation matrix. This class allows access to the whole matrix, or the individual components (eg scale, rotation, shear, etc) of the transformation. This breakdown provides animators fine control over the animation of these parameters. Therefore, it is necessary to describe the order in which these attributes are applied to build the final matrix attribute.

A transformation matrix is composed of the following components:

Scale pivot point point around which scales are performed [Sp]
Scale scaling about x, y, z axes [S]
Shear shearing in xy, xz, yx [Sh]
Scale pivot translation translation introduced to preserve existing scale transformations when moving pivot. This is used to prevent the object from moving when the objects pivot point is not at the origin and a non-unit scale is applied to the object [St].
Rotate pivot point point about which rotations are performed [Rp]
Rotation orientation rotation to orient local rotation space [Ro]
Rotation rotation [R]
Rotate pivot translation translation introduced to preserve exisitng rotate transformations when moving pivot. This is used to prevent the object from moving when the objects pivot point is not at the origin and the pivot is moved. [Rt]
Translate translation in x, y, z axes [T]

Note that the default RotationOrder is kXYZ.

The matrices are post-multiplied in Maya. For example, to transform a point P from object-space to world-space (P') you would need to post-multiply by the worldMatrix. (P' = P x WM)

The transformation matrix is then constructed as follows:

-1 -1

[Sp]x[S]x[Sh]x[Sp]x[St]x[Rp]x[Ro]x[R]x[Rp]x[Rt]x[T]

where 'x' denotes matrix multiplication and '-1' denotes matrix inversion

Sp = |  1    0    0    0 |     St = |  1    0    0    0 |
     |  0    1    0    0 |          |  0    1    0    0 |
     |  0    0    1    0 |          |  0    0    1    0 |
     | spx  spy  spz   1 |          | sptx spty sptz  1 |
S  = |  sx   0    0    0 |     Sh = |  1    0    0    0 |
     |  0    sy   0    0 |          | shxy  1    0    0 |
     |  0    0    sz   0 |          | shxz shyz  1    0 |
     |  0    0    0    1 |          |  0    0    0    1 |
Rp = |  1    0    0    0 |     Rt = |  1    0    0    0 |
     |  0    1    0    0 |          |  0    1    0    0 |
     |  0    0    1    0 |          |  0    0    1    0 |
     | rpx  rpy  rpz   1 |          | rptx rpty rptz  1 |
Ro = AX * AY * AZ
AX = |  1    0    0    0 |     AY = |  cy   0   -sy   0 |
     |  0    cx   sx   0 |          |  0    1    0    0 |
     |  0   -sx   cx   0 |          |  sy   0    cy   0 |
     |  0    0    0    1 |          |  0    0    0    1 |
AZ = |  cz   sz   0    0 |     sx = sin(rax), cx = cos(rax)
     | -sz   cz   0    0 |     sy = sin(ray), cx = cos(ray)
     |  0    0    1    0 |     sz = sin(raz), cz = cos(raz)
     |  0    0    0    1 |
R  = RX * RY * RZ  (Note: order is determined by rotateOrder)
RX = |  1    0    0    0 |     RY = |  cy   0   -sy   0 |
     |  0    cx   sx   0 |          |  0    1    0    0 |
     |  0   -sx   cx   0 |          |  sy   0    cy   0 |
     |  0    0    0    1 |          |  0    0    0    1 |
RZ = |  cz   sz   0    0 |     sx = sin(rx), cx = cos(rx)
     | -sz   cz   0    0 |     sy = sin(ry), cx = cos(ry)
     |  0    0    1    0 |     sz = sin(rz), cz = cos(rz)
     |  0    0    0    1 |
T  = |  1    0    0    0 |
     |  0    1    0    0 |
     |  0    0    1    0 |
     |  tx   ty   tz   1 |

Examples:: AbcBullet/MayaTransformCollectionWriter.h, AbcImport/XformHelper.cpp, apiMeshShape/apiMeshShape.cpp, apiMeshShape/apiMeshShape.h, buildRotationNode/buildRotationNode.cpp, constraintEvaluator/constraintEvaluator.cpp, D3DViewportRenderer/D3DResourceManager.cpp, D3DViewportRenderer/D3DViewportRenderer.cpp, dagPoseInfoCmd/dagPoseInfoCmd.cpp, hwReflectBumpShader_NV20/hwReflectBumpShader_NV20.cpp, hwRefractReflectShader_NV20/hwRefractReflectShader_NV20.cpp, manipOverride/rockingTransform2.cpp, motionPathNode/motionPathNode.cpp, moveManip/moveManip.cpp, rockingTransform/rockingTransform.cpp, rockingTransformCheck/rockingTransform.cpp, scanDagCmd/scanDagCmd.cpp, scanDagSyntax/scanDagSyntax.cpp, simpleFluidEmitter/simpleFluidEmitter.cpp, squareScaleManipContext/squareScaleManipContext.cpp, surfaceBumpManip/surfaceBumpManip.cpp, and transformDrawNode/transformDrawNode.cpp.

Public Types
enum	RotationOrder { kInvalid, kXYZ, kYZX, kZXY, kXZY, kYXZ, kZYX, kLast }
	Order of rotation. More...

Public Member Functions
	~MTransformationMatrix ()
	Class Destructor.

	MTransformationMatrix ()
	Class Constructor.

	MTransformationMatrix (const MTransformationMatrix &src)
	Class Copy Constructor. More...

	MTransformationMatrix (const MMatrix &src)
	Class Constructor. More...

MTransformationMatrix &	operator= (const MTransformationMatrix &src)
	Copy operator. More...

MTransformationMatrix &	operator= (const MMatrix &src)
	Copy operator. More...

MMatrix	asMatrix () const
	Returns the four by four matrix that describes this transformation. More...

MMatrix	asMatrix (double percent) const
	Returns a matrix that represents the specified percentage of this transformation matrix. More...

MMatrix	asMatrixInverse () const
	Returns the inverse of the four by four matrix that describes this transformation. More...

MMatrix	asScaleMatrix () const
	Returns scale space matrix. More...

MMatrix	asRotateMatrix () const
	Returns rotate space matrix. More...

MStatus	getScale (double scale[3], MSpace::Space space) const
	Get the scale component of the transformation matrix. More...

MStatus	setScale (const double scale[3], MSpace::Space space)
	Set the scale component of the transformation matrix. More...

MStatus	addScale (const double scale[3], MSpace::Space space)
	Add to the scale component by scaling relative to the existing transformation. More...

MQuaternion	rotation () const
	Returns the rotation component of the transformation matrix as a quaternion. More...

MTransformationMatrix &	rotateTo (const MQuaternion &q)
	Sets the rotation component of the transformation matrix using a quaternion. More...

MTransformationMatrix &	rotateBy (const MQuaternion &q, MSpace::Space space, MStatus *ReturnStatus=NULL)
	Adds to the rotation component of the rotation matrix by rotating relative to the existing transformation using a quaternion. More...

MEulerRotation	eulerRotation () const
	Returns the rotation component of the transformation matrix as an euler rotation. More...

MTransformationMatrix &	rotateTo (const MEulerRotation &e)
	Sets the rotation component of the transformation matrix using an euler rotation. More...

MTransformationMatrix &	rotateBy (const MEulerRotation &e, MSpace::Space space, MStatus *ReturnStatus=NULL)
	Adds to the rotation component of the rotation matrix by rotating relative to the existing transformation using an euler rotation. More...

MStatus	getRotationQuaternion (double &x, double &y, double &z, double &w) const
	Get the rotation component of the transformation matrix as a quaternion. More...

MStatus	setRotationQuaternion (double x, double y, double z, double w)
	Set the rotation component of the transformation matrix using a quaternion. More...

MStatus	addRotationQuaternion (double x, double y, double z, double w, MSpace::Space)
	Add to the rotation component by rotating relative to the existing transformation. More...

MStatus	getRotation (double[3], RotationOrder &order) const
	Get the rotation component of the transformation matrix in radians. More...

MStatus	setRotation (const double rotation[3], RotationOrder order)
	Set the rotation component of the transformation matrix. More...

MStatus	addRotation (const double rotation[3], RotationOrder order, MSpace::Space)
	Add to the rotation component by rotating relative to the existing transformation. More...

RotationOrder	rotationOrder (MStatus *ReturnStatus=NULL) const
	Returns the rotation order for the transform matrix. More...

MStatus	reorderRotation (const RotationOrder &order)
	Reorders the x, y, and z components of the rotation of this transform. More...

MStatus	setToRotationAxis (const MVector &axis, double rotation)
	Sets the rotation given an axis and a rotation about it. More...

MQuaternion	rotationOrientation () const
	Returns the rotation orientation for the transformation matrix. More...

MTransformationMatrix &	setRotationOrientation (const MQuaternion &q)
	Sets the rotation orientation for the transformation matrix. More...

MVector	getTranslation (MSpace::Space, MStatus *ReturnStatus=NULL) const
	Returns the translation component of the translation as a vector in centimeters. More...

MStatus	setTranslation (const MVector &vector, MSpace::Space)
	Set the translation component of the transformation matrix in centimeters. More...

MStatus	addTranslation (const MVector &vector, MSpace::Space)
	Add to the translation component by translating relative to the existing transformation. More...

MStatus	setShear (const double shear[3], MSpace::Space space)
	Set the shear component of the transformation matrix. More...

MStatus	getShear (double shear[3], MSpace::Space space) const
	Get the shear component of the transformation matrix. More...

MStatus	addShear (const double shear[3], MSpace::Space space)
	Add to the shear component by shearing relative to the existing transformation. More...

MPoint	scalePivot (MSpace::Space, MStatus *ReturnStatus=NULL) const
	Returns the pivot around which the scale is applied. More...

MStatus	setScalePivot (const MPoint &, MSpace::Space, bool balance)
	Set the pivot around which the scale is applied. More...

MVector	scalePivotTranslation (MSpace::Space, MStatus *ReturnStatus=NULL) const
	Returns the scale pivot translation. More...

MStatus	setScalePivotTranslation (const MVector &vector, MSpace::Space)
	Set the pivot translation. More...

MPoint	rotatePivot (MSpace::Space, MStatus *ReturnStatus=NULL) const
	Returns the pivot around which the rotation is applied. More...

MStatus	setRotatePivot (const MPoint &point, MSpace::Space, bool balance)
	Set the pivot around which the rotation is applied. More...

MVector	rotatePivotTranslation (MSpace::Space space, MStatus *ReturnStatus=NULL) const
	Returns the rotation pivot translation. More...

MStatus	setRotatePivotTranslation (const MVector &vector, MSpace::Space space)
	Set the pivot translation. More...

bool	isEquivalent (const MTransformationMatrix &other, double tolerance=MTransformationMatrix_kTol) const
	Returns true if this transform matrix is equivalent to the one passed in within a certain tolerance. More...

bool	operator== (const MTransformationMatrix &other) const
	Equality operator. More...

bool	operator!= (const MTransformationMatrix &other) const
	Inequality operator. More...

MStatus	getRotation (double[3], RotationOrder &order, MSpace::Space) const
	This method is obsolete. More...

MStatus	setRotation (const double rotation[3], RotationOrder order, MSpace::Space)
	This method is obsolete. More...

MStatus	getRotationQuaternion (double &x, double &y, double &z, double &w, MSpace::Space) const
	This method is obsolete. More...

MStatus	setRotationQuaternion (double x, double y, double z, double w, MSpace::Space)
	This method is obsolete. More...

MVector	translation (MSpace::Space, MStatus *ReturnStatus=NULL) const
	This method is obsolete. More...

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

Static Public Attributes
static const MTransformationMatrix	identity
	The identity transformation matrix.

Member Enumeration Documentation

enum RotationOrder

Order of rotation.

Enumerator
kInvalid
kXYZ
kYZX
kZXY
kXZY
kYXZ
kZYX
kLast

Examples:: motionPathNode/motionPathNode.cpp.

Constructor & Destructor Documentation

MTransformationMatrix ( const MTransformationMatrix & src )

Class Copy Constructor.

Parameters

[in] src transform matrix to be copied

MTransformationMatrix ( const MMatrix & src )

Class Constructor.

Parameters

[in] src matrix to be copied

Member Function Documentation

MTransformationMatrix & operator= ( const MTransformationMatrix & src )

Copy operator.

Parameters

[in] src transform matrix to be copied

MTransformationMatrix & operator= ( const MMatrix & src )

Copy operator.

Parameters

[in] src matrix to be copied

Returns: This transformation matrix

MMatrix asMatrix ( ) const

Returns the four by four matrix that describes this transformation.

Returns: The matrix

Examples:: apiMeshShape/apiMeshShape.cpp, buildRotationNode/buildRotationNode.cpp, D3DViewportRenderer/D3DResourceManager.cpp, D3DViewportRenderer/D3DViewportRenderer.cpp, dagPoseInfoCmd/dagPoseInfoCmd.cpp, and squareScaleManipContext/squareScaleManipContext.cpp.

MMatrix asMatrix ( double percent ) const

Returns a matrix that represents the specified percentage of this transformation matrix.

Parameters

[in] percent percent of the transformation to return

Returns: The percentage matrix

MMatrix asMatrixInverse ( ) const

Returns the inverse of the four by four matrix that describes this transformation.

Returns: The matrix

MMatrix asScaleMatrix ( ) const

Returns scale space matrix.

The scale space matrix takes points from object space to the space immediately following scale and shear transformations.

Returns: The scale space matrix

MMatrix asRotateMatrix ( ) const

Returns rotate space matrix.

The rotate space matrix takes points from object space to the space immediately following the scale/shear/rotation transformations.

Returns: The rotate space matrix

Examples:: squareScaleManipContext/squareScaleManipContext.cpp.

MStatus getScale	(	double	scale[3],
		MSpace::Space	space
	)		const

Get the scale component of the transformation matrix.

Parameters

[out]	scale	storage for the scale component
[in]	space	transform space in which to get the scale

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus setScale	(	const double	scale[3],
		MSpace::Space	space
	)

Set the scale component of the transformation matrix.

Parameters

[in]	scale	new scale component
[in]	space	transform space in which to perform the scale

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus addScale	(	const double	scale[3],
		MSpace::Space	space
	)

Add to the scale component by scaling relative to the existing transformation.

Parameters

[in]	scale	relative value to scale by
[in]	space	transform space in which to perform the scale

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MQuaternion rotation ( ) const

Returns the rotation component of the transformation matrix as a quaternion.

The rotation is returned in MSpace::kTransform space.

Returns: Quaternion that is the rotation component of the transformation matrix

MTransformationMatrix & rotateTo ( const MQuaternion & q )

Sets the rotation component of the transformation matrix using a quaternion.

The rotation is performed in MSpace::kTransform space.

Parameters

[in] q the quaternion to which the rotation component of the transformation matrix should be set

Returns: A reference to the resulting transformation matrix

MTransformationMatrix & rotateBy	(	const MQuaternion &	q,
		MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)

Adds to the rotation component of the rotation matrix by rotating relative to the existing transformation using a quaternion.

The only valid transformation spaces for this method are MSpace::kTransform and MSpace::kPreTransform/MSpace::kObject. All other spaces are treated as being equivalent to MSpace::kTransform.

Parameters

[in]	q	the quaternion that indicates how much the transformation matrix will be rotated by
[in]	space	the space in which the rotation is performed
[out]	ReturnStatus	return status

Returns: A reference to the resulting transformation matrix

Status Codes:

MS::kSuccess operation successful
MS::kInvalidParameter invalid space

MEulerRotation eulerRotation ( ) const

Returns the rotation component of the transformation matrix as an euler rotation.

Returns: Euler rotation that is the rotation component of the transformation matrix

MTransformationMatrix & rotateTo ( const MEulerRotation & e )

Sets the rotation component of the transformation matrix using an euler rotation.

The rotation is performed in MSpace::kTransform space.

Parameters

[in] e the euler rotation to which the rotation component of the transformation matrix should be set

Returns: A reference to the resulting transformation matrix

MTransformationMatrix & rotateBy	(	const MEulerRotation &	e,
		MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)

Adds to the rotation component of the rotation matrix by rotating relative to the existing transformation using an euler rotation.

The only valid transformation spaces for this method are MSpace::kTransform and MSpace::kPreTransform/MSpace::kObject. All other spaces are treated as being equivalent to MSpace::kTransform.

Parameters

[in]	e	the euler rotation that indicates how much the transformation matrix will be rotated by
[in]	space	the space in which the rotation is performed
[out]	ReturnStatus	return status

Returns: A reference to the resulting transformation matrix

Status Codes:

MS::kSuccess operation successful
MS::kInvalidParameter invalid space

MStatus getRotationQuaternion	(	double &	x,
		double &	y,
		double &	z,
		double &	w
	)		const

Get the rotation component of the transformation matrix as a quaternion.

The rotation is retrieved in MSpace::kTransform space.

Parameters

[out]	x	storage for the x component of the quaternion
[out]	y	storage for the y component of the quaternion
[out]	z	storage for the z component of the quaternion
[out]	w	storage for the w component of the quaternion

Returns: Return status

Status Codes:

MS::kSuccess Success

MStatus setRotationQuaternion	(	double	x,
		double	y,
		double	z,
		double	w
	)

Set the rotation component of the transformation matrix using a quaternion.

The rotation is set in MSpace::kTransform space.

Parameters

[in]	x	x component of new quaternion
[in]	y	y component of new quaternion
[in]	z	z component of new quaternion
[in]	w	w component of new quaternion

Returns: Return status

Status Codes:

MS::kSuccess Success

MStatus addRotationQuaternion	(	double	x,
		double	y,
		double	z,
		double	w,
		MSpace::Space	space
	)

Add to the rotation component by rotating relative to the existing transformation.

Rotation is a quaternion. The only valid transformation spaces for this method are MSpace::kTransform and MSpace::kPreTransform. All other spaces are treated as being equivalent to MSpace::kTransform.

Parameters

[in]	x	x component of quaternion
[in]	y	y component of quaternion
[in]	z	z component of quaternion
[in]	w	w component of quaternion
[in]	space	transformation space in which to perform the operation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus getRotation	(	double	rot[3],
		MTransformationMatrix::RotationOrder &	order
	)		const

Get the rotation component of the transformation matrix in radians.

The rotation is retrieved in MSpace::kTransform space.

Parameters

[out]	rot	storage for the rotation in radians
[out]	order	storage for the rotation order

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter NULL double array

Examples:: buildRotationNode/buildRotationNode.cpp, motionPathNode/motionPathNode.cpp, moveManip/moveManip.cpp, and squareScaleManipContext/squareScaleManipContext.cpp.

MStatus setRotation	(	const double	rot[3],
		MTransformationMatrix::RotationOrder	order
	)

Set the rotation component of the transformation matrix.

The rotation is set in MSpace::kTransform space.

Parameters

[in]	rot	new rotation component in radians
[in]	order	order in which to apply rotations

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter NULL double array or rotation order is invalid

MStatus addRotation	(	const double	rot[3],
		MTransformationMatrix::RotationOrder	order,
		MSpace::Space	space
	)

Add to the rotation component by rotating relative to the existing transformation.

The only valid transformation spaces for this method are MSpace::kTransform and MSpace::kPreTransform. All other spaces are treated as being equivalent to MSpace::kTransform.

Parameters

[in]	rot	relative value to rotate by
[in]	order	order in which to apply the rotation components
[in]	space	transform space in which to perform the rotation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MTransformationMatrix::RotationOrder rotationOrder ( MStatus * ReturnStatus = NULL ) const

Returns the rotation order for the transform matrix.

That is the order in which the Euler angles are applied to create the end rotation.

Parameters

[out] ReturnStatus return status

Returns: Rotation order

Status Codes:

MS::kSuccess Success

MStatus reorderRotation ( const RotationOrder & order )

Reorders the x, y, and z components of the rotation of this transform.

The overall rotation will remain the same. This operation is not unique, so spin information will be lost.

Parameters

[in] order new order of the rotations

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid rotation order

Examples:: buildRotationNode/buildRotationNode.cpp.

MStatus setToRotationAxis	(	const MVector &	axis,
		double	rotation
	)

Sets the rotation given an axis and a rotation about it.

Parameters

[in]	axis	axis to rotate about
[in]	rotation	rotation in radians

Returns: Return status

Status Codes:

MS::kSuccess Success

Examples:: buildRotationNode/buildRotationNode.cpp.

MQuaternion rotationOrientation ( ) const

Returns the rotation orientation for the transformation matrix.

The rotation orientation is the rotation that orients the local rotation space. The rotation is returned in MSpace::kTransform space.

Returns: Rotation orientation

MTransformationMatrix & setRotationOrientation ( const MQuaternion & q )

Sets the rotation orientation for the transformation matrix.

The rotation orientation is the rotation that orients the local rotation space. The rotation is set in MSpace::kTransform space.

Parameters

[in] q Rotation quaternion.

Returns: Rotation orientation

MVector getTranslation	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

Returns the translation component of the translation as a vector in centimeters.

Parameters

[in]	space	space in which to perform the translation
[out]	ReturnStatus	return status

Returns: Translation vector in centimeters

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

Examples:: squareScaleManipContext/squareScaleManipContext.cpp.

MStatus setTranslation	(	const MVector &	vector,
		MSpace::Space	space
	)

Set the translation component of the transformation matrix in centimeters.

Parameters

[in]	vector	new translation component in centimeters.
[in]	space	transform space in which to perform the translation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

Examples:: squareScaleManipContext/squareScaleManipContext.cpp.

MStatus addTranslation	(	const MVector &	vector,
		MSpace::Space	space
	)

Add to the translation component by translating relative to the existing transformation.

Parameters

[in]	vector	relative value to translate by
[in]	space	transform space in which to perform the scale

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setShear	(	const double	shear[3],
		MSpace::Space	space
	)

Set the shear component of the transformation matrix.

The shear values represent (xy, xz, yx).

Parameters

[in]	shear	new shear component
[in]	space	transform space in which to perform the shear

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus getShear	(	double	shear[3],
		MSpace::Space	space
	)		const

Get the shear component of the transformation matrix.

Parameters

[out]	shear	Shear.
[in]	space	Transform space in which to get the shear.

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus addShear	(	const double	shear[3],
		MSpace::Space	space
	)

Add to the shear component by shearing relative to the existing transformation.

Parameters

[in]	shear	relative value to shear by
[in]	space	transform space in which to perform the shear

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MPoint scalePivot	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

Returns the pivot around which the scale is applied.

Parameters

[in]	space	space in which to get the pivot
[out]	ReturnStatus	return status

Returns: Scale pivot point

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setScalePivot	(	const MPoint &	point,
		MSpace::Space	space,
		bool	balance
	)

Set the pivot around which the scale is applied.

If balance if true, then the overall transformation matrix will not change and a compensating transformation will be added to the scale transformation to achieve this.

Parameters

[in]	point	new scale pivot
[in]	space	transform space in which to set the scale pivot
[in]	balance	whether to balance the matrix

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MVector scalePivotTranslation	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

Returns the scale pivot translation.

This is the translation that is used to compensate for the movement of the scale pivot.

Parameters

[in]	space	space in which to get the pivot
[out]	ReturnStatus	return status

Returns: Scale pivot translation

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setScalePivotTranslation	(	const MVector &	vector,
		MSpace::Space	space
	)

Set the pivot translation.

This component is used to preserve existing scale transformations when moving pivot. This method will only be useful to advanced users.

Parameters

[in]	vector	new scale pivot translation
[in]	space	transform space in which to set the scale translation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MPoint rotatePivot	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

Returns the pivot around which the rotation is applied.

Parameters

[in]	space	space in which to get the pivot
[out]	ReturnStatus	return status

Returns: Rotation pivot point

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setRotatePivot	(	const MPoint &	point,
		MSpace::Space	space,
		bool	balance
	)

Set the pivot around which the rotation is applied.

If balance if true, then the overall transformation matrix will not change and a compensating transformation will be added to the rotation transformation to achieve this.

Parameters

[in]	point	new rotation pivot
[in]	space	transform space in which to set the pivot
[in]	balance	whether to balance the matrix

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MVector rotatePivotTranslation	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

Returns the rotation pivot translation.

This is the translation that is used to compensate for the movement of the rotation pivot.

Parameters

[in]	space	space in which to get the pivot translation
[out]	ReturnStatus	return status

Returns: Scale pivot translation

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setRotatePivotTranslation	(	const MVector &	vector,
		MSpace::Space	space
	)

Set the pivot translation.

This component is used to preserve existing transformations when moving pivot. This method will only be useful to advanced users.

Parameters

[in]	vector	new rotation pivot translation
[in]	space	transform space in which to set the rotation translation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

bool isEquivalent	(	const MTransformationMatrix &	other,
		double	tol = `MTransformationMatrix_kTol`
	)		const

Returns true if this transform matrix is equivalent to the one passed in within a certain tolerance.

Parameters

[in]	other	transform matrix to test against
[in]	tol	tolerance to test using

Returns: True if equivalent

bool operator== ( const MTransformationMatrix & other ) const

Equality operator.

Parameters

[in] other transform matrix to test against

Returns: True if equal

bool operator!= ( const MTransformationMatrix & other ) const

Inequality operator.

Parameters

[in] other transform matrix to test against

Returns: True if not equal

MStatus getRotation	(	double	rot[3],
		MTransformationMatrix::RotationOrder &	order,
		MSpace::Space	space
	)		const

This method is obsolete.

Deprecated:: Use the other MTransformationMatrix::getRotation method instead.

This method will be removed in a future Maya release. The transformation space argument was always treated as MSpace::kTransform regardless of the actual argument.

Get the rotation component in radians of the transformation matrix.

Parameters

[out]	rot	storage for the rotation in radians
[out]	order	storage for the rotation order
[in]	space	transform space in which to get the rotation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus setRotation	(	const double	rot[3],
		MTransformationMatrix::RotationOrder	order,
		MSpace::Space	space
	)

This method is obsolete.

Deprecated:: Use the other MTransformationMatrix::setRotation method instead.

The transformation space argument was always treated as MSpace::kTransform regardless of the actual argument.

Set the rotation component of the transformation matrix.

Parameters

[in]	rot	new rotation component
[in]	order	order in which to apply rotations
[in]	space	transform space in which to perform the rotation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space or NULL double array

MStatus getRotationQuaternion	(	double &	x,
		double &	y,
		double &	z,
		double &	w,
		MSpace::Space	space
	)		const

This method is obsolete.

Deprecated:: Use the other MTransformationMatrix::getRotationQuaternion method instead.

The transformation space argument was always treated as MSpace::kTransform regardless of the actual argument.

Get the rotation component of the transformation matrix as a quaternion.

Parameters

[out]	x	storage for the x component of the quaternion
[out]	y	storage for the y component of the quaternion
[out]	z	storage for the z component of the quaternion
[out]	w	storage for the w component of the quaternion
[in]	space	transform space in which to get the rotation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MStatus setRotationQuaternion	(	double	x,
		double	y,
		double	z,
		double	w,
		MSpace::Space	space
	)

This method is obsolete.

Deprecated:: Use the other MTransformationMatrix::setRotationQuaternion method instead.

The transformation space argument was always treated as MSpace::kTransform regardless of the actual argument.

Set the rotation component of the transformation matrix using a quaternion.

Parameters

[in]	x	x component of new quaternion
[in]	y	y component of new quaternion
[in]	z	z component of new quaternion
[in]	w	w component of new quaternion
[in]	space	transform space in which to perform the rotation

Returns: Return status

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

MVector translation	(	MSpace::Space	space,
		MStatus *	ReturnStatus = `NULL`
	)		const

This method is obsolete.

Deprecated:: Use MTransformationMatrix::getTranslation instead.

Returns the translation component of the translation as a vector in centimeters.

Parameters

[in]	space	space in which to perform the translation
[out]	ReturnStatus	return status

Returns: Translation vector in centimeters

Status Codes:

MS::kSuccess Success
MS::kInvalidParameter Invalid space

Examples:: D3DViewportRenderer/D3DResourceManager.cpp, D3DViewportRenderer/D3DViewportRenderer.cpp, scanDagCmd/scanDagCmd.cpp, and scanDagSyntax/scanDagSyntax.cpp.

const char * className ( )

static

Returns the name of this class.

Returns: Name of this class.

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

MTransformationMatrix.h
MTransformationMatrix.cpp

MTransformationMatrix Class Reference

Class Description

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation