MFnDynSweptGeometryData Class Reference

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Detailed Description

Swept Geometry function set for dependency node data.

MFnDynSweptGeometryData provides access to the MDynSweptLine and MDynSweptTriangle data for use in a user defined dependency graph node. The data is provided as an output from the geoConnector node and is primarily used to determine positional information over time.

If a user written dependency node accepts MFnDynSweptGeometryData, then this class is used to extract data that comes from the geoConnector node. The MDataHandle::type method will return kDynSweptGeometry 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 MFnDynSweptGeometryData.

Important note: Users can create the data for connections but cannot produce the contents of the data as this is reserved for the Maya Dynamics internals.

Examples:

simpleFluidEmitter.cpp, and sweptEmitter.cpp.

#include <MFnDynSweptGeometryData.h>

Inheritance diagram for MFnDynSweptGeometryData:

List of all members.

Public Member Functions
virtual MFn::Type	type () const
	Function set type.
virtual	~MFnDynSweptGeometryData ()
	Destructor.
	MFnDynSweptGeometryData ()
	Default constructor.
	MFnDynSweptGeometryData (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
int	lineCount (MStatus *ReturnStatus=NULL) const
	Return the number of line segments contained in the data.
int	triangleCount (MStatus *ReturnStatus=NULL) const
	Return the number of triangles contained in the data.
MDynSweptLine	sweptLine (int index, MStatus *ReturnStatus=NULL) const
	Return data for a swept line.
MDynSweptTriangle	sweptTriangle (int index, MStatus *ReturnStatus=NULL) const
	Return data for a swept triangle.
MObject	create (MStatus *ReturnStatus=NULL)
	This method create a new swept geometry data object for use with the dependency graph.
	MFnDynSweptGeometryData (const MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
Protected Member Functions
virtual const char *	className () const
	Class name.

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Constructor & Destructor Documentation

MFnDynSweptGeometryData	(	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

MFnDynSweptGeometryData	(	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:

• 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 type

(

)

const [virtual]

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Function set type.

Return the class type : MFn::kDynSweptGeometryData.

Reimplemented from MFnData.

const char * className

(

)

const [protected, virtual]

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Class name.

Return the class name : "MFnDynSweptGeometryData".

Reimplemented from MFnData.

int lineCount

(

MStatus *

ReturnStatus = NULL

)

const

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Return the number of line segments contained in the data.

Parameters:

[out]

ReturnStatus

kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

Number of line segments

int triangleCount

(

MStatus *

ReturnStatus = NULL

)

const

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Return the number of triangles contained in the data.

Parameters:

[out]

ReturnStatus

kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

Number of triangles

MDynSweptLine sweptLine	(	int	index,
		MStatus *	ReturnStatus = NULL
	)		const

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Return data for a swept line.

Parameters:

[in]	index	Index of the swept line to return data for. Must be in the range 0 to (lineCount() - 1).
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A const reference to the MDynSweptLine

MDynSweptTriangle sweptTriangle	(	int	index,
		MStatus *	ReturnStatus = NULL
	)		const

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Return data for a swept triangle.

Parameters:

[in]	index	Index of the swept triangle to return data for. Must be in the range 0 to (triangleCount() - 1).
[out]	ReturnStatus	kFailure if the instance is not attached to an MObject, and kSuccess otherwise.

Returns:

A const reference to the MDynSweptTriangle

MObject create

(

MStatus *

ReturnStatus = NULL

)

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This method create a new swept geometry data object for use with the dependency graph.

Parameters:

[out]

ReturnStatus

return status

Returns:

A handle to the new swept geometry data object

Status Codes:

• MS::kSuccess operation successful
• MS::kInsufficientMemory out of memory