MFnComponentListData Class Reference
[OpenMaya - API module for common classesFunctionSet classes]

#include <MFnComponentListData.h>

Inheritance diagram for MFnComponentListData:

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Collaboration diagram for MFnComponentListData:

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List of all members.


Detailed Description

Component list function set for dependency node data.

MFnComponentListData allows the creation and manipulation of component list (represented as MObjects) data objects for use in the dependency graph.

If a user written dependency node either accepts or produces MObjects containing component lists, then this class is used to extract or create the data that comes from or goes to other dependency graph nodes. 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 MFnComponentListData.

Examples:

meshOpCmd.cpp, meshOpNode.cpp, splitUVCmd.cpp, and splitUVNode.cpp.


Public Member Functions

virtual MFn::Type type () const
 Function set type.
virtual ~MFnComponentListData ()
 Destructor.
 MFnComponentListData ()
 Default constructor.
 MFnComponentListData (MObject &object, MStatus *ReturnStatus=NULL)
 Constructor.
unsigned int length (MStatus *ReturnStatus=NULL) const
bool has (const MObject &obj, MStatus *ReturnStatus=NULL) const
MObject operator[] (unsigned int index) const
MStatus add (MObject &)
MStatus remove (const MObject &)
MStatus remove (unsigned int index)
MStatus clear ()
MObject create (MStatus *ReturnStatus=NULL)
 MFnComponentListData (const MObject &object, MStatus *ReturnStatus=NULL)
 NO SCRIPT SUPPORT.

Protected Member Functions

virtual const char * className () const
 Class name.

Constructor & Destructor Documentation

MFnComponentListData::MFnComponentListData ( 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:

MFnComponentListData::MFnComponentListData ( 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:


Member Function Documentation

MFn::Type MFnComponentListData::type (  )  const [virtual]

Function set type.

Return the class type : MFn::kComponentListData

Reimplemented from MFnData.

const char * MFnComponentListData::className (  )  const [protected, virtual]

Class name.

Return the class name : "MFnComponentListData"

Reimplemented from MFnData.

unsigned int MFnComponentListData::length ( MStatus ReturnStatus = NULL  )  const

Return the number of components in the instance.

Parameters:
[out] ReturnStatus Status code.
Returns:
The number of components in the instance
Status Codes:

bool MFnComponentListData::has ( const MObject obj,
MStatus ReturnStatus = NULL 
) const

Determine if the instance of the component list contains the component represented by the given MObject.

Parameters:
[in] obj the MObject containing the component to look for
Returns:
true if the component list contains the component, false otherwise

MObject MFnComponentListData::operator[] ( unsigned int  index  )  const

Extract the indicated component from the const instance. No checking is done by this class to ensure that the index is valid - use the length method to determine the size of the array. If the instance is not attached to an MObject, this method will return MObject::kNullObj.

Parameters:
[in] index the index of the component to extract
Returns:
The indicated component

MStatus MFnComponentListData::add ( MObject obj  ) 

Add the given component to the component list.

Parameters:
[in] obj an MObject containing the component to add
Returns:
kSuccess if successful, kFailure if either the instance is not attached to a component list, or the given MObject does not contain a component.
Examples:

MStatus MFnComponentListData::remove ( const MObject obj  ) 

Remove the given component from the component list.

Parameters:
[in] obj an MObject containing the component to remove
Returns:
kSuccess if successful, kFailure if either the instance is not attached to a component list, or the given MObject does not contain a component.

MStatus MFnComponentListData::remove ( unsigned int  index  ) 

Remove the indicated component from the component list.

Parameters:
[in] index the index of the component to remove
Returns:
kSuccess if successful, kFailure if either the instance is not attached to a component list.

MStatus MFnComponentListData::clear (  ) 

Remove all components from the component list

Returns:
kSuccess if successful, kFailure if either the instance is not attached to a component list.

MObject MFnComponentListData::create ( MStatus ReturnStatus = NULL  ) 

Create a new MObject, attach it to this instance, and initialize it to contain an empty component list.

Parameters:
[out] ReturnStatus kSuccess
Returns:
The newly created MObject
Examples:


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