MIteratorType Class Reference

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Detailed Description

MIteratorType class.

The MIteratorType class is used on iterators where more than one type of filters can be specified. It also provides functionalities to set and get the filter list or individual types of filter. This class should be used in conjunction with DAG/DG/DependencyNodes iterators for using filter list (list of MFn::Type objects) on them, thus enabling faster traversal thro' iterators.

Also, the class has functionalities for specifying the type of object the iterator will be reset to. This could be an MObject, an MPlug or an MDagPath.

#include <MIteratorType.h>

List of all members.

Public Types
enum	objFilterType { kMObject, kMDagPathObject, kMPlugObject }
	Type of object the iterator deals with. More...
Public Member Functions
	MIteratorType (MStatus *ReturnStatus=NULL)
	Class Constructor.
	MIteratorType (const MIteratorType &, MStatus *ReturnStatus=NULL)
	Copy Constructor.
	~MIteratorType ()
	Destructor.
void	setFilterType (MFn::Type type, MStatus *ReturnStatus=NULL)
	Sets the filter type to be used in the iterator.
void	setFilterList (MIntArray &listOfFilters, MStatus *ReturnStatus=NULL)
	Sets the filter list.
void	setObjectType (objFilterType objType, MStatus *ReturnStatus=NULL)
	Sets the object type.
MFn::Type	getFilterType (MStatus *ReturnStatus=NULL)
	Returns the type of filter.
MStatus	getFilterList (MIntArray &listOfFilters)
	Gets the list of filters.
MIteratorType::objFilterType	getObjectType (MStatus *ReturnStatus=NULL)
	Returns the object type.
bool	filterListEnabled ()
	Returns whether the we are using a single filter on the iterator or a filter list.

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Member Enumeration Documentation

enum objFilterType

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Type of object the iterator deals with.

Enumerator:

kMObject	This is to indicate that the root of the iterator has to be reset to an MObject. Search for all occurrences
kMDagPathObject	This is to indicate that the root of the iterator has to be reset to an MDagPath object. Search for all occurrences
kMPlugObject	This is to indicate that the root of the iterator has to be reset to an MPlug object. Search for all occurrences

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Constructor & Destructor Documentation

MIteratorType

(

MStatus *

ReturnStatus = NULL

)

Class Constructor.

Initializes the filter type and object type.

Parameters:

[out]

ReturnStatus

Status Code (see below)

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

MIteratorType	(	const MIteratorType &	src,
		MStatus *	ReturnStatus = NULL
	)

Copy Constructor.

Constructs the object from an object of the same type.

Parameters:

[in]	src	Source object.
[out]	ReturnStatus	Status Code (see below)

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

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Member Function Documentation

void setFilterType	(	MFn::Type	type,
		MStatus *	ReturnStatus = NULL
	)

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Sets the filter type to be used in the iterator.

See MFn::Type for the list of filter types that can be set.

Parameters:

[in]	type	An object of type MFn::Type.
[out]	ReturnStatus	Status Code (see below)

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

void setFilterList	(	MIntArray &	listOfFilters,
		MStatus *	ReturnStatus = NULL
	)

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Sets the filter list.

The types of filters to be traversed in the iterator is added to an array and then passed in to this function. This also enables filter list usage on iterators, as opposed to single filter.

Parameters:

[in]	listOfFilters	List of MFn::Type filters.
[out]	ReturnStatus	Status Code (see below)

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

void setObjectType	(	objFilterType	objFilterType,
		MStatus *	ReturnStatus = NULL
	)

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Sets the object type.

This function should be used only when we want to reset the iterator root. Iterator root can be reset to either an MObject, an MDagPath or to an MPlug. For each of this, there is a corresponding enum value, which has to be used as an argument to this function.

During creation of the iterator, this function has no effect.

Parameters:

[in]	objFilterType	Type specifying the type of object.
[out]	ReturnStatus	Status Code (see below)

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

MFn::Type getFilterType

(

MStatus *

ReturnStatus = NULL

)

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Returns the type of filter.

Parameters:

[out]

ReturnStatus

Status Code (see below)

Returns:

The filter type.

Status Codes:

• MS::kSuccess Success
• MS::kInvlaidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

MStatus getFilterList

(

MIntArray &

listOfFilters

)

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Gets the list of filters.

Parameters:

[out]

listOfFilters

Array of filters.

Returns:

• MS::kSuccess Success
• MS::kInvalidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

MIteratorType::objFilterType getObjectType

(

MStatus *

ReturnStatus = NULL

)

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Returns the object type.

Parameters:

[out]

ReturnStatus

Status Code (see below)

Returns:

The object type.

Status Codes:

• MS::kSuccess Success
• MS::kInvalidParameter Invalid parameter passed for mode or type
• MS::kFailure Failure creating iterator

bool filterListEnabled

(

)

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Returns whether the we are using a single filter on the iterator or a filter list.

Returns:

true if a filter list is being used, false otherwise