MFnArrayAttrsData Class Reference
[OpenMaya - API module for common classes, FunctionSet classes]

#include <MFnArrayAttrsData.h>

Inheritance diagram for MFnArrayAttrsData:

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Collaboration diagram for MFnArrayAttrsData:

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List of all members.

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Detailed Description

Function set for multiple arrays of attributes for dependency node data.

MFnArrayAttrsData allows the creation and manipulation of multiple arrays of attributes as a data object over a single connection for use as dependency graph data.

If a user written dependency node either accepts or produces MFnArrayAttrsData, then this class is used to extract or create the data that comes from or goes to other dependency graph nodes. The MDataHandle::type method will return kDynArrayAttrsData when data of this type is present. To access it, the MDataHandle::data() method is used to get an MObject for the data and this should then be used to initialize an instance of MFnArrayAttrsData.

NOTE: these data attributes are not storable.

Examples:

dynExprField.cpp, ownerEmitter.cpp, ownerEmitter.h, simpleEmitter.cpp, simpleEmitter.h, simpleFluidEmitter.h, sweptEmitter.cpp, and sweptEmitter.h.

Public Types
enum	Type {   kInvalid, kVectorArray, kDoubleArray, kIntArray,   kStringArray, kLast }
	Types of dependency graph data. More...
Public Member Functions
virtual MFn::Type	type () const
	Function set type.
virtual	~MFnArrayAttrsData ()
	Destructor.
	MFnArrayAttrsData ()
	Default constructor.
	MFnArrayAttrsData (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
MStatus	clear ()
unsigned int	count () const
MStringArray	list (MStatus *ReturnStatus=NULL) const
bool	checkArrayExist (const MString attrName, MFnArrayAttrsData::Type &arrayType, MStatus *ReturnStatus=NULL)
MVectorArray	vectorArray (const MString attrName, MStatus *ReturnStatus=NULL)
MDoubleArray	doubleArray (const MString attrName, MStatus *ReturnStatus=NULL)
MIntArray	intArray (const MString attrName, MStatus *ReturnStatus=NULL)
MStringArray	stringArray (const MString attrName, MStatus *ReturnStatus=NULL)
MObject	create (MStatus *ReturnStatus=NULL)
MVectorArray	getVectorData (const MString attrName, MStatus *ReturnStatus=NULL)
MDoubleArray	getDoubleData (const MString attrName, MStatus *ReturnStatus=NULL)
MIntArray	getIntData (const MString attrName, MStatus *ReturnStatus=NULL)
MStringArray	getStringData (const MString attrName, MStatus *ReturnStatus=NULL)
	MFnArrayAttrsData (const MObject &object, MStatus *ReturnStatus=NULL)
	NO SCRIPT SUPPORT.
Protected Member Functions
virtual const char *	className () const
	Class name.

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Member Enumeration Documentation

enum MFnArrayAttrsData::Type

Types of dependency graph data.

Enumerator:

kInvalid	Invalid value.
kVectorArray	use vectorArray() method to extract the attribute array.
kDoubleArray	use doubleArray() method to extract the attribute array.
kIntArray	use intArray() method to extract the attribute array.
kStringArray	use stringArray() method to extract the attribute array.
kLast	Last value. It does not represent real data, but can be used to loop on all possible types

Reimplemented from MFnData.

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Constructor & Destructor Documentation

MFnArrayAttrsData::MFnArrayAttrsData	(	MObject &	object,
		MStatus *	ReturnStatus = NULL
	)

Constructor.

Class constructor that initializes the function set to the given MObject.

Parameters:

[in]	object	The MObject to attach the function set to
[out]	ReturnStatus	the return status

Status Codes:

• MS::kSuccess if the function set is successfully attached
• MS::kInvalidParameter if the MObject does not represent a valid Maya object or if the function set is not allowed to attach to this MObject

MFnArrayAttrsData::MFnArrayAttrsData	(	const MObject &	object,
		MStatus *	ReturnStatus = NULL
	)

NO SCRIPT SUPPORT.

Constructor

Class constructor that initializes the function set to the given MObject.

Parameters:

[in]	object	The MObject to attach the function set to
[out]	ReturnStatus	the return status

Status Codes:

• MS::kSuccess if the function set is successfully attached
• MS::kInvalidParameter if the MObject does not represent a valid Maya object or if the function set is not allowed to attach to this MObject

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Member Function Documentation

MFn::Type MFnArrayAttrsData::type

(

)

const [virtual]

Function set type.

Return the class type : MFn::kDynArrayAttrsData

Reimplemented from MFnData.

const char * MFnArrayAttrsData::className

(

)

const [protected, virtual]

Class name.

Return the class name : "MFnArrayAttrsData"

Reimplemented from MFnData.

MStatus MFnArrayAttrsData::clear

(

)

Clear the contents of all of the arrays.

Returns:

• kSuccess operation successful
• kFailure MS::kFailure if the instance is not attached to an MObject

unsigned int MFnArrayAttrsData::count

(

)

const

Returns the number of attribute arrays.

Returns:

The number or arrays

MStringArray MFnArrayAttrsData::list

(

MStatus *

ReturnStatus = NULL

)

const

Returns a list of names for the attribute arrays.

Parameters:

[out]

ReturnStatus

Status code.

Returns:

A list of all the names of all the arrays stored in the data.

bool MFnArrayAttrsData::checkArrayExist	(	const MString	name,
		MFnArrayAttrsData::Type &	arrayType,
		MStatus *	ReturnStatus = NULL
	)

Check if the attribute array related to the given name has been created. If the named array exists return true and the array data type.

Parameters:

[in]	name	the name of the array to check
[in]	arrayType	the type of the array to extract
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

True if the array exists and false otherwise.

MVectorArray MFnArrayAttrsData::vectorArray	(	const MString	name,
		MStatus *	ReturnStatus = NULL
	)

Return an MVectorArray containing the vector array currently operated upon by the function set. The MVectorArray returned by this method is editable, so any changes to the return instance also affects the MObject operated upon by this function set. If the array did not exist it will be created.

Parameters:

[in]	name	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MVectorArray held in this instance

Examples:

ownerEmitter.cpp, simpleEmitter.cpp, and sweptEmitter.cpp.

MDoubleArray MFnArrayAttrsData::doubleArray	(	const MString	name,
		MStatus *	ReturnStatus = NULL
	)

Return an MDoubleArray containing the double array currently operated upon by the function set. The MDoubleArray returned by this method is editable, so any changes to the return instance also affects the MObject operated upon by this function set. If the array did not exist it will be created.

Parameters:

[in]	name	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MDoubleArray held in this instance

Examples:

simpleEmitter.cpp.

MIntArray MFnArrayAttrsData::intArray	(	const MString	name,
		MStatus *	ReturnStatus = NULL
	)

Return an MIntArray containing the int array currently operated upon by the function set. The MIntArray returned by this method is editable, so any changes to the return instance also affects the MObject operated upon by this function set. If the array did not exist it will be created.

Parameters:

[in]	name	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MIntArray held in this instance

MStringArray MFnArrayAttrsData::stringArray	(	const MString	name,
		MStatus *	ReturnStatus = NULL
	)

Return an MStringArray containing the string array currently operated upon by the function set. The MStringArray returned by this method is editable, so any changes to the return instance also affects the MObject operated upon by this function set. If the array did not exist it will be created.

Parameters:

[in]	name	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MStringArray held in this instance

MObject MFnArrayAttrsData::create

(

MStatus *

ReturnStatus = NULL

)

Create a new MObject, attach it to this instance, and initialize it to be empty.

Parameters:

[out]

ReturnStatus

kSuccess

Returns:

The newly created MObject

Examples:

ownerEmitter.cpp, simpleEmitter.cpp, and sweptEmitter.cpp.

MVectorArray MFnArrayAttrsData::getVectorData	(	const MString	attrName,
		MStatus *	ReturnStatus = NULL
	)

Return an MVectorArray containing the vector array currently operated upon by the function set. The MVectorArray returned by this method is read only. If the array did not exist it will be created.

Parameters:

[in]	attrName	the name of the array to read
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MVectorArray held in this instance

MDoubleArray MFnArrayAttrsData::getDoubleData	(	const MString	attrName,
		MStatus *	ReturnStatus = NULL
	)

Return an MDoubleArray containing the double array currently operated upon by the function set. The MDoubleArray returned by this method is read only. If the array did not exist it will be created.

Parameters:

[in]	attrName	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MDoubleArray held in this instance

MIntArray MFnArrayAttrsData::getIntData	(	const MString	attrName,
		MStatus *	ReturnStatus = NULL
	)

Return an MIntArray containing the int array currently operated upon by the function set. The MIntArray returned by this method is read only. If the array did not exist it will be created.

Parameters:

[in]	attrName	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MIntArray held in this instance

MStringArray MFnArrayAttrsData::getStringData	(	const MString	attrName,
		MStatus *	ReturnStatus = NULL
	)

Return an MStringArray containing the string array currently operated upon by the function set. The MStringArray returned by this method is read only. If the array did not exist it will be created.

Parameters:

[in]	attrName	the name of the array to edit or create.
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A copy of the MStringArray held in this instance