#include <MFnKeyframeDeltaTangent.h>

Class Description

Function set for changes to a key's tangent.

A MFnKeyframeDeltaTangent function allows API programmers to read changes in keyframe tangent values. It captures changes in tangent type, as well as, changes in tangent time/value pair.

MFnKeyframeDeltaTangents are generated by a MAnimMessage::addAnimKeyframeEditedCallback. Because a key's tangent may be unbroken. It is possible to receive to MFnKeyframeDeltaTangent values per key – one for the incoming tangent and one for the outgoing tangent. The API programmer should use the isInTangent method to determine if the tangent change affects the in-bound tangent or out-bound tangent.

Inheritance diagram for MFnKeyframeDeltaTangent:

Public Member Functions
virtual MFn::Type	type () const
	Function set type. More...

virtual	~MFnKeyframeDeltaTangent ()
	Destructor.

	MFnKeyframeDeltaTangent ()
	Default constructor.

	MFnKeyframeDeltaTangent (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor. More...

MFnAnimCurve::TangentType	previousTangentType (MStatus *ReturnStatus=NULL) const
	Returns the previous tangent type. More...

MFnAnimCurve::TangentType	currentTangentType (MStatus *ReturnStatus=NULL) const
	Returns the current tangent type that the key represents. More...

MStatus	getPreviousPosition (float &x, float &y) const
	Get the values of the previous time/value position of the tangent for this key. More...

MStatus	getCurrentPosition (float &x, float &y) const
	Get the values of the current time/value position of the tangent for this key. More...

bool	isInTangent (MStatus *ReturnStatus=NULL) const
	Key's have two tangents, in-bound and out-bound. More...

	MFnKeyframeDeltaTangent (const MObject &object, MStatus *ReturnStatus=NULL)
	Constructor. More...

Public Member Functions inherited from MFnKeyframeDelta
virtual	~MFnKeyframeDelta ()
	Destructor.

	MFnKeyframeDelta ()
	Default constructor.

	MFnKeyframeDelta (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor. More...

MObject	paramCurve (MStatus *ReturnStatus=NULL) const
	Return the Animation Curve MObject that this key belongs to. More...

virtual unsigned int	keyIndex (MStatus *ReturnStatus=NULL) const
	The index of this key on the animation curve. More...

	MFnKeyframeDelta (const MObject &object, MStatus *ReturnStatus=NULL)
	Constructor. More...

Public Member Functions inherited from MFnBase
virtual	~MFnBase ()
	Class Destructor. More...

bool	hasObj (MFn::Type) const
	Determines whether or not the Function Set is compatible with the specified Maya Object within the API RTTI system. More...

bool	hasObj (const MObject &) const
	Determines whether or not the Function Set is compatible with the specified Maya Object within the API RTTI system. More...

MObject	object (MStatus *ReturnStatus=NULL) const
	Returns the MObject that is attached to the Function Set. More...

virtual MStatus	setObject (MObject &object)
	Attaches the Function Set to the specified Maya Object. More...

virtual MStatus	setObject (const MObject &object)
	NO SCRIPT SUPPORT. More...

Protected Member Functions
virtual const char *	className () const
	Class name. More...

Additional Inherited Members
Static Public Member Functions inherited from MFnBase
static const char *	className ()
	Returns the name of this class. More...

Constructor & Destructor Documentation

MFnKeyframeDeltaTangent	(	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

MFnKeyframeDeltaTangent	(	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

Member Function Documentation

MFn::Type type ( ) const

virtual

Function set type.

Return the class type : MFn::kKeyframeDeltaTangent.

Reimplemented from MFnKeyframeDelta.

const char * className ( ) const

protectedvirtual

Class name.

Return the class name : "MFnKeyframeDeltaTangent".

Reimplemented from MFnKeyframeDelta.

MFnAnimCurve::TangentType previousTangentType ( MStatus * ReturnStatus = NULL ) const

Returns the previous tangent type.

Parameters

[out] ReturnStatus Return code.

Returns: The previous tangent type.

Status Codes:

MS::kSuccess The operation succeeded.
MS::kFailure An object error has occurred.

MFnAnimCurve::TangentType currentTangentType ( MStatus * ReturnStatus = NULL ) const

Returns the current tangent type that the key represents.

Parameters

[out] ReturnStatus Return code.

Returns: The current tangent type.

Status Codes:

MS::kSuccess The operation succeeded.
MS::kFailure An object error has occurred.

MStatus getPreviousPosition	(	float &	x,
		float &	y
	)		const

Get the values of the previous time/value position of the tangent for this key.

Parameters

[out]	x	The x component of the position.
[out]	y	The y component of the position.

Returns: MStatus based on the success or failure of the method.

Status Codes:

MS::kSuccess The operation succeeded.
MS::kFailure An object error has occurred.

MStatus getCurrentPosition	(	float &	x,
		float &	y
	)		const

Get the values of the current time/value position of the tangent for this key.

Parameters

[out]	x	The x component of the position.
[out]	y	The y component of the position.

Returns: A MStatus based on the success or failure of the method.

Status Codes:

MS::kSuccess The operation succeeded.
MS::kFailure An object error has occurred.

bool isInTangent ( MStatus * ReturnStatus = NULL ) const

Key's have two tangents, in-bound and out-bound.

A MFnKeyframeTangent object can created once for each tangent. Use this method to determine which tangent was modified.

Parameters

[out] ReturnStatus Return code.

Returns

true if the incoming tangent was modified.
false if the outgoing tangent was modified.

Status Codes:

MS::kSuccess The operation succeeded.
MS::kFailure An object error has occurred.

The documentation for this class was generated from the following files:

MFnKeyframeDeltaTangent.h
MFnKeyframeDeltaTangent.cpp

MFnKeyframeDeltaTangent Class Reference

Class Description

Public Member Functions

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation