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

#include <MFnVectorArrayData.h>
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List of all members.


Detailed Description

int array function set for dependency node data.

MFnVectorArrayData allows the creation and manipulation of MVectorArray data objects for use in the dependency graph.

If a user written dependency node either accepts or produces MVectorArrays, 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 kVectorArray 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 MFnVectorArrayData.

Examples:

dynExprField.cpp, ownerEmitter.cpp, particleAttrNode.cpp, simpleFluidEmitter.cpp, and torusField.cpp.


Public Member Functions

virtual MFn::Type  type () const
  Function set type.
virtual  ~MFnVectorArrayData ()
  Destructor.
  MFnVectorArrayData ()
  Default constructor.
  MFnVectorArrayData (MObject &object, MStatus *ReturnStatus=NULL)
  Constructor.
unsigned int  length (MStatus *ReturnStatus=NULL) const
MStatus  set (MVector &element, unsigned int index)
MStatus  copyTo (MVectorArray &) const
MStatus  set (const MVectorArray &newArray)
MVectorArray  array (MStatus *ReturnStatus=NULL)
MObject  create (MStatus *ReturnStatus=NULL)
MObject  create (const MVectorArray &in, MStatus *ReturnStatus=NULL)
  MFnVectorArrayData (const MObject &object, MStatus *ReturnStatus=NULL)
  Constructor.
const MVector operator[] (unsigned int index) const
  NO SCRIPT SUPPORT.
MVector operator[] (unsigned int index)
  NO SCRIPT SUPPORT.

Protected Member Functions

virtual const char *  className () const
  Class name.

Constructor & Destructor Documentation

MFnVectorArrayData::MFnVectorArrayData ( 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:

MFnVectorArrayData::MFnVectorArrayData ( const 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:

Member Function Documentation

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

Function set type.

Return the class type : MFn::kVectorArrayData

Reimplemented from MFnData.

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

Class name.

Return the class name : "MFnVectorArrayData"

Reimplemented from MFnData.

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

Return the number of vectors in the instance.

Parameters:
[out]  ReturnStatus  kFailure if the instance is not attached to an MObject, and kSuccess otherwise.
Returns:
The number of vectors in the instance

MStatus MFnVectorArrayData::set ( MVector element,
unsigned int  index  
)

Set the element at the specified index.

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.

Parameters:
[in]  element  the element
[in]  index  the index of the vector to set
Returns:
  • kSuccess operation successful
  • kFailure instance is not attached to an MObject
Examples:

MStatus MFnVectorArrayData::copyTo ( MVectorArray dest  )  const

Copy all the vectors in the instance into the given MVectorArray.

Parameters:
[out]  dest  the MVectorArray to populate
Returns:
  • kSuccess operation successful
  • kFailure instance is not attached to an MObject

MStatus MFnVectorArrayData::set ( const MVectorArray array  ) 

Set the instance to contain the vectors defined in the given MVectorArray.

Parameters:
[in]  array  the MVectorArray containing the data to set into this instance
Returns:
  • kSuccess operation successful
  • kFailure instance is not attached to an MObject

MVectorArray MFnVectorArrayData::array ( 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.

Parameters:
[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:

MObject MFnVectorArrayData::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:

MObject MFnVectorArrayData::create ( const MVectorArray arr,
MStatus ReturnStatus = NULL  
)

Create a new MObject, attach it to this instance, and initialize it to contain the data from the given MVectorArray.

Parameters:
[in]  arr  the data to use when initializing this instance
[out]  ReturnStatus  kSuccess
Returns:
The newly created MObject

const MVector & MFnVectorArrayData::operator[] ( unsigned int  index  )  const

NO SCRIPT SUPPORT.

Extract the indicated int 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 an empty vector.

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

MVector & MFnVectorArrayData::operator[] ( unsigned int  index  ) 

NO SCRIPT SUPPORT.

Extract the indicated vector from the instance. by the function set. The vector returned by this method is editable, so any changes to the returned instance also affects the MObject operated upon by this function set.

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 a zero vector.

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

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