#include <MFnMotionPath.h>

Class Description

Motion path animation function set.

This class is used for constructing and manipulating motion path animation.

Motion path animation requires a curve (or surface) and one or more other objects. During the animation, the objects will be moved along the curve.

Setting "follow" for the motion path aligns the object(s) local axis to the tangent of the motion path. Banking can also be applied to objects.

Motion path markers are points along the path where the orientation and position for the object(s) travelling along the path can be specified.

Examples:: motionPathCmd/motionPathCmd.cpp.

Inheritance diagram for MFnMotionPath:

Public Types
enum	Axis { kXaxis, kYaxis, kZaxis }
	Available axes. More...

Public Types inherited from MFnDependencyNode
enum	MAttrClass { kLocalDynamicAttr = 1, kNormalAttr, kExtensionAttr, kInvalidAttr }
	Specifies the scope of the attribute. More...

enum	MdgTimerState { kTimerOff, kTimerOn, kTimerUninitialized, kTimerInvalidState }
	Possible states for the node's timer. More...

enum	MdgTimerMetric { kTimerMetric_callback, kTimerMetric_compute, kTimerMetric_dirty, kTimerMetric_draw, kTimerMetric_fetch, kTimerMetric_callbackViaAPI, kTimerMetric_callbackNotViaAPI, kTimerMetric_computeDuringCallback, kTimerMetric_computeNotDuringCallback, kTimerMetrics }
	The different timer metrics which can be queried. More...

enum	MdgTimerType { kTimerType_self, kTimerType_inclusive, kTimerType_count, kTimerTypes }
	The types of timers which can be queried. More...

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

virtual	~MFnMotionPath ()
	Destructor.

	MFnMotionPath ()
	Default constructor.

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

MObject	create (const MDagPath &pathObject, const MDagPath &objectToAnimate, MTime &timeStart, MTime &timeEnd, MDGModifier modifier=NULL, MStatus ReturnStatus=NULL)
	Create a new motion path dependency node. More...

MStatus	setPathObject (const MDagPath &pathObject, MDGModifier *modifier=NULL)
	Set the curve or surface for this motion path. More...

MDagPath	pathObject (MStatus *ReturnStatus=NULL)
	Return a dag path to the motion path object. More...

MStatus	addAnimatedObject (const MDagPath &objectToAnimate, MDGModifier *modifier=NULL)
	Add an object to be animated along this motion path. More...

MStatus	getAnimatedObjects (MDagPathArray &array)
	Returns an array of dag paths to the animated objects for this motion path. More...

MStatus	setFollow (bool on, MDGModifier *modifier=NULL)
	Setting follow on will cause the animated object(s) local axis to be aligned with the tangent of the motion path. More...

bool	follow (MStatus *ReturnStatus=NULL) const
	Determines whether follow is set for this motion path node. More...

MStatus	setFollowAxis (Axis axis)
	Sets the axis of the animated object that will follow the motion path. More...

Axis	followAxis (MStatus *ReturnStatus=NULL)
	Return the follow axis for this motion path. More...

MStatus	setUpAxis (Axis axis)
	Set the up-axis for this motion path. More...

Axis	upAxis (MStatus *ReturnStatus=NULL)
	Return the up-axis for this motion path. More...

MStatus	setBank (bool bank)

bool	bank (MStatus *ReturnStatus=NULL) const
	Determines whether bank has been enabled for this motion path. More...

MStatus	setBankScale (double bankScale)
	Set the bank scale for this motion path. More...

double	bankScale (MStatus *ReturnStatus=NULL)
	Return the bank scale for this motion path. More...

MStatus	setBankThreshold (double bankThreshold)
	Set the bank threshold for this motion path. More...

double	bankThreshold (MStatus *ReturnStatus=NULL)
	Return the bank threshold for this motion path. More...

MStatus	setUseNormal (bool use)
	If true, enables alignment of the up axis of the animated object to the normal vector of the path geometry. More...

bool	useNormal (MStatus *ReturnStatus=NULL)
	Determines whether the up-axis of the animated object for this motion path is aligned with the normal vector of the path geometry. More...

MStatus	setInverseNormal (bool invert)
	If true, enable alignment of the up axis of the moving object(s) to the opposite direction of the normal vector of the path geometry. More...

bool	inverseNormal (MStatus *ReturnStatus=NULL)
	Determines whether the up-axis of the animated object for this motion path is aligned to the opposite direction of the normal vector of the path geometry. More...

MStatus	setUStart (double start)
	Sets the starting value of the u parameterization for the animation. More...

MStatus	setUEnd (double end)
	Sets the end value of the u parameterization for the animation. More...

double	uStart (MStatus *ReturnStatus=NULL)
	Returns the starting value of the u parameterization for the animation. More...

double	uEnd (MStatus *ReturnStatus=NULL)
	Returns the end value of the u parameterization for the animation. More...

MStatus	setUTimeStart (MTime &start)
	Sets the starting time of the animation for the u parameter. More...

MStatus	setUTimeEnd (MTime &end)
	Sets the end time of the animation for the u parameter. More...

MTime	uTimeStart (MStatus *ReturnStatus=NULL)
	Returns the start time of the animation for the u parameter. More...

MTime	uTimeEnd (MStatus *ReturnStatus=NULL)
	Returns the end time of the animation for the u parameter. More...

unsigned int	numPositionMarkers (MStatus *ReturnStatus=NULL)
	Returns the number of position markers on this motion path. More...

MObject	getPositionMarker (unsigned int, MStatus *ReturnStatus=NULL)
	Gets the position marker where markerNum is the order in which the marker was created. More...

unsigned int	numOrientationMarkers (MStatus *ReturnStatus=NULL)
	Returns the number of orientation markers on this motion path. More...

MObject	getOrientationMarker (unsigned int, MStatus *ReturnStatus=NULL)
	Gets the orientation marker where markerNum is the order in which the marker was created. More...

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

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

	MFnDependencyNode ()
	Default constructor.

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

MObject	create (const MTypeId &typeId, MStatus *ReturnStatus=NULL)
	Creates a new dependency node with the given type tag. More...

MObject	create (const MTypeId &typeId, const MString &name, MStatus *ReturnStatus=NULL)
	Creates a new dependency node with the given type tag. More...

MObject	create (const MString &type, MStatus *ReturnStatus=NULL)
	Creates a new dependency node with the given type. More...

MObject	create (const MString &type, const MString &name, MStatus *ReturnStatus=NULL)
	Creates a new dependency node with the given type. More...

MTypeId	typeId (MStatus *ReturnStatus=NULL) const
	Returns the type id of this node. More...

MString	typeName (MStatus *ReturnStatus=NULL) const
	Returns the type name of this node. More...

MString	name (MStatus *ReturnStatus=NULL) const
	Returns the name of this node. More...

MString	absoluteName (MStatus *ReturnStatus=NULL) const
	Returns the absolute name of this node. More...

MString	pluginName (MStatus *ReturnStatus=NULL) const
	Returns the name of the plug-in this MFnDependendencyNode was defined in. More...

MString	setName (const MString &name, bool createNamespace=false, MStatus *ReturnStatus=NULL)
	Sets the name of this node. More...

MUuid	uuid (MStatus *ReturnStatus=NULL) const
	Returns the node's UUID. More...

void	setUuid (const MUuid &uuid, MStatus *ReturnStatus=NULL)
	Sets the node's UUID. More...

MStatus	getConnections (MPlugArray &array) const
	Get all of the current connections to this node as an array of plugs. More...

unsigned int	attributeCount (MStatus *ReturnStatus=NULL) const
	Returns the number of attributes that this node has. More...

MObject	attribute (unsigned int index, MStatus *ReturnStatus=NULL) const
	Finds the attribute of this node at the given index. More...

MObject	reorderedAttribute (unsigned int index, MStatus *ReturnStatus=NULL) const
	Some nodes, such as the various animCurve nodes, require that their attributes be set in a specific order for proper operation. More...

MObject	attribute (const MString &attrName, MStatus *ReturnStatus=NULL) const
	Finds the attribute of this node that has the given name. More...

MAttrClass	attributeClass (const MObject &attr, MStatus *ReturnStatus=NULL) const
	Returns the class (normal, dynamic, extension) of the specified attribute. More...

MStatus	getAffectedAttributes (const MObject &attr, MObjectArray &affectedAttributes) const
	Returns an array of attributes that are affected by the attribute passed in. More...

MStatus	getAffectedByAttributes (const MObject &attr, MObjectArray &affectedByAttributes) const
	Returns an array of attributes that affect the attribute passed in, attr. More...

MPlug	findPlug (const MObject &attr, bool wantNetworkedPlug, MStatus *ReturnStatus=NULL) const
	Attempt to find a plug for the given attribute. More...

MPlug	findPlug (const MString &attrName, bool wantNetworkedPlug, MStatus *ReturnStatus=NULL) const
	Attempt to find a plug for the given attribute. More...

MPlug	findPlug (const MObject &attr, MStatus *ReturnStatus=NULL) const
	This method is obsolete. More...

MPlug	findPlug (const MString &attrName, MStatus *ReturnStatus=NULL) const
	This method is obsolete. More...

MStatus	addAttribute (const MObject &attr)
	Add a new dynamic attibute to this node. More...

MStatus	removeAttribute (const MObject &attr)
	Remove a dynamic attribute from a node. More...

MPxNode *	userNode (MStatus *ReturnStatus=NULL) const
	If the function set's node is a plug-in node, then this method will extract the MPxNode pointer from it. More...

bool	isFromReferencedFile (MStatus *ReturnStatus=NULL) const
	Indicates whether or not this node came from a referenced file. More...

bool	isShared (MStatus *ReturnStatus=NULL) const
	Indicates whether or not this node is shared. More...

bool	isTrackingEdits (MStatus *ReturnStatus=NULL) const
	Returns whether or not edits on the given node are being tracked by the generalized edit system. More...

bool	hasUniqueName (MStatus *ReturnStatus=NULL) const
	Indicates whether or not this node's name is unique within the scene. More...

MString	parentNamespace (MStatus *ReturnStatus=NULL) const
	Returns the name of the namespace in which this node resides. More...

bool	isLocked (MStatus *ReturnStatus=NULL) const
	Indicates whether or not this node is locked. More...

MStatus	setLocked (bool locked)
	Locks or unlocks this node. More...

bool	isNewAttribute (const MObject &attr, MStatus *ReturnStatus=NULL) const
	Indicates whether or not the specified attribute was added to this node within the current scene. More...

MStatus	setFlag (unsigned int flag, bool state)
	Sets the state of the specified flag for the node. More...

bool	isFlagSet (unsigned int flag, MStatus *ReturnStatus=NULL) const
	Retrieves the current state of the specified flag for a node. More...

bool	isDefaultNode (MStatus *ReturnStatus=NULL) const
	Returns true if the node is a default node. More...

MStatus	setDoNotWrite (bool flag)
	Use this method to mark the "do not write" state of this node. More...

bool	canBeWritten (MStatus *ReturnStatus=NULL) const
	Returns the do not write state of the node. More...

bool	hasAttribute (const MString &name, MStatus *ReturnStatus=NULL) const
	Returns true if the node already has an attribute with the given name. More...

MObject	getAliasAttr (bool force, MStatus *ReturnStatus=NULL)
	Returns the node's alias attribute, which is a special attribute used to store information about the node's attribute aliases. More...

bool	setAlias (const MString &alias, const MString &name, const MPlug &plug, bool add=true, MStatus *ReturnStatus=NULL)
	Sets or removes an alias (i.e. More...

bool	findAlias (const MString &alias, MObject &attrObj, MStatus *ReturnStatus=NULL) const
	Retrieves the attribute with the given alias. More...

bool	getAliasList (MStringArray &strArray, MStatus *ReturnStatus=NULL)
	Returns a list of all attribute aliases for this node. More...

MString	plugsAlias (const MPlug &plug, MStatus *ReturnStatus=NULL)
	Returns the alias for the plug's attribute or the empty string if that attribute has no alias. More...

MStatus	setIcon (const MString &filename)
	Associates a custom icon with the node for display in the Maya UI. More...

MString	icon (MStatus *ReturnStatus=NULL) const
	Returns the custom icon filename associated with the node. More...

MStatus	getExternalContent (MExternalContentInfoTable &table) const
	Returns the external content (files) that this node depends on. More...

MStatus	addExternalContentForFileAttr (MExternalContentInfoTable &table, const MObject &attr) const
	Adds content info to the specified table from a file path attribute. More...

MStatus	setExternalContentForFileAttr (const MObject &attr, const MExternalContentLocationTable &table)
	Sets content info in the specified attribute from the table. More...

MStatus	setExternalContent (const MExternalContentLocationTable &table)
	Changes the location of external content. More...

MString	setName (const MString &name, MStatus *ReturnStatus)
	OBSOLETE FUNCTION, NO SCRIPT SUPPORT. More...

	MFnDependencyNode (const MObject &object, MStatus *ReturnStatus=NULL)
	NO SCRIPT SUPPORT. More...

bool	getPlugsAlias (const MPlug &plug, MString &aliasName, MStatus *ReturnStatus=NULL)
	NO SCRIPT SUPPORT. More...

virtual const adsk::Data::Associations *	metadata (MStatus *ReturnStatus=NULL) const
	This method is not available in Python. More...

virtual MStatus	setMetadata (const adsk::Data::Associations &)
	This method is not available in Python. More...

virtual MStatus	deleteMetadata ()
	This method is not available in Python. More...

virtual MStatus	validateMetadata (MString &errors) const
	This method is not available in Python. More...

MStatus	dgTimerOn ()
	Indicates that this node should collect DG timing data whenever DG timing is enabled. More...

MStatus	dgTimerOff ()
	Indicates that this node should no longer collect DG timing data when DG timing is enabled. More...

MdgTimerState	dgTimerQueryState (MStatus *ReturnStatus=NULL)
	The function returns the current on/off state of the node's timer. More...

MStatus	dgTimerReset ()
	The function resets the dependency graph timers and counters for this node to zero. More...

double	dgTimer (const MdgTimerMetric timerMetric, const MdgTimerType timerType, MStatus *ReturnStatus=NULL) const
	The function returns the specified timer value for the current node. More...

MStatus	dgCallbacks (const MdgTimerType type, MStringArray &callbackName, MDoubleArray &value)
	Node callbacks that occur when timing is enabled get logged with the node and can be queried via this method. More...

MStatus	dgCallbackIds (const MdgTimerType type, const MString &callbackName, MCallbackIdArray &callbackId, MDoubleArray &value)
	This method provides a further breakdown of the per-callback time returned via dgCallbacks() by returning the data on a per-callbackId basis. More...

MStatus	addAttribute (const MObject &attr, MAttrClass type)
	This method is obsolete. More...

MStatus	removeAttribute (const MObject &attr, MAttrClass type)
	This method is obsolete. 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 MFnDependencyNode
static MString	classification (const MString &nodeTypeName)
	Retrieves the classification string for a node type. More...

static unsigned int	allocateFlag (const MString pluginName, MStatus *ReturnStatus=NULL)
	Allocates a node flag for sole use by the caller. More...

static MStatus	deallocateFlag (const MString pluginName, unsigned int flag)
	Deallocates a node flag which was previously allocated by a call to allocateFlag. More...

static MStatus	deallocateAllFlags (const MString pluginName)
	Deallocates all of the node flags which are currently allocated to the specified plugin. More...

static void	enableDGTiming (bool enable)
	Globally enables or disables the DG node timing mechanism. More...

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

Member Enumeration Documentation

enum Axis

Available axes.

Enumerator
kXaxis
kYaxis
kZaxis

Constructor & Destructor Documentation

MFnMotionPath	(	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

MFnMotionPath	(	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::kMotionPath.

Reimplemented from MFnDependencyNode.

const char * className ( ) const

protectedvirtual

Class name.

Return the class name : "MFnMotionPath".

Reimplemented from MFnDependencyNode.

MObject create	(	const MDagPath &	pathObject,
		const MDagPath &	objectToAnimate,
		MTime &	timeStart,
		MTime &	timeEnd,
		MDGModifier *	modifier = `NULL`,
		MStatus *	ReturnStatus = `NULL`
	)

Create a new motion path dependency node.

When a motion path node is created, the following defaults are set:

Follow OFF
Bank OFF
BankScale 1.0
BankThreshold 0.5 * PI

Parameters

[in]	pathObject	the curve, surface, or curve-on-surface to use as the object path
[in]	objectToAnimate	the object that will follow the motion path
[in]	timeStart	the time at which to start the animation
[in]	timeEnd	the time at which to end the animation
[in]	modifier	this object will hold the undo information
[out]	ReturnStatus	Status Code

Returns: The new motion path node

Status Codes:

MS::kSuccess Member was successful
MS::kLicenseFailure application not licensed for attempted operation
MS::kFailure An object error has occurred

Examples:: motionPathCmd/motionPathCmd.cpp.

MStatus setPathObject	(	const MDagPath &	pathObject,
		MDGModifier *	modifier = `NULL`
	)

Set the curve or surface for this motion path.

All animated objects for this motion path will follow the new path that is specified.

Parameters

[in]	pathObject	The curve (or surface) that will be the motion path
[in]	modifier	The object that will hold the undo information

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MDagPath pathObject ( MStatus * ReturnStatus = NULL )

Return a dag path to the motion path object.

The motion path object is the curve/surface that animated objects of this node will move along.

Parameters

[out] ReturnStatus Status Code

Returns: The dag path of the motion path object

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus addAnimatedObject	(	const MDagPath &	objectToAnimate,
		MDGModifier *	modifier = `NULL`
	)

Add an object to be animated along this motion path.

Parameters

[in]	objectToAnimate	A DAG path to the animated object
[in]	modifier	The object that will hold the undo information

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus getAnimatedObjects ( MDagPathArray & array )

Returns an array of dag paths to the animated objects for this motion path.

Parameters

[out] array Storage for the dag paths.

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setFollow	(	bool	on,
		MDGModifier *	modifier = `NULL`
	)

Setting follow on will cause the animated object(s) local axis to be aligned with the tangent of the motion path.

The default alignment axis is Y.

Parameters

[in]	on	Specifies whether follow is activated for this motion path
[in]	modifier	The object that will hold the undo information

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

bool follow ( MStatus * ReturnStatus = NULL ) const

Determines whether follow is set for this motion path node.

Parameters

[out] ReturnStatus Status Code

Returns

true Follow is turned on
false Follow is turned off

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setFollowAxis ( MFnMotionPath::Axis axis )

Sets the axis of the animated object that will follow the motion path.

Possible alignment parameters are kXaxis, kYaxiz, or kZaxis.

Parameters

[in] axis Object axis to align with motion path tangent

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MFnMotionPath::Axis followAxis ( MStatus * ReturnStatus = NULL )

Return the follow axis for this motion path.

Parameters

[out] ReturnStatus Status Code

Returns: The follow axis.

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUpAxis ( MFnMotionPath::Axis axis )

Set the up-axis for this motion path.

Parameters

[in] axis Axis to be set

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MFnMotionPath::Axis upAxis ( MStatus * ReturnStatus = NULL )

Return the up-axis for this motion path.

Parameters

[out] ReturnStatus Status Code

Returns: The up-axis for this motion path

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setBank ( bool bank )

Parameters

[in] bank Specifies whether bank is turned on

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

bool bank ( MStatus * ReturnStatus = NULL ) const

Determines whether bank has been enabled for this motion path.

Parameters

[out] ReturnStatus Status Code

Returns

true Bank is enabled
false Bank is disabled

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setBankScale ( double bankScale )

Set the bank scale for this motion path.

If the computed bank angles are not large enough, the user can specify the bankScale to amplify them. The default value is 1.

Positive bankScale produces inward bank angle, negative bankScale produces outward bank angle.

Parameters

[in] bankScale The new bank scale value

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

double bankScale ( MStatus * ReturnStatus = NULL )

Return the bank scale for this motion path.

Parameters

[out] ReturnStatus Status Code

Returns: The bank scale.

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setBankThreshold ( double bankThreshold )

Set the bank threshold for this motion path.

The bank threshold is used to specify the maximum bank angle. The default value is 90 degrees.

Parameters

[in] bankThreshold The new bank threshold value

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

double bankThreshold ( MStatus * ReturnStatus = NULL )

Return the bank threshold for this motion path.

The bank threshold is used to specify the maximum bank angle. The default value is 90 degrees.

Parameters

[out] ReturnStatus Status Code

Returns: The bank threshold.

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUseNormal ( bool use )

If true, enables alignment of the up axis of the animated object to the normal vector of the path geometry.

Parameters

[in] use Specifies if normal is used

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

bool useNormal ( MStatus * ReturnStatus = NULL )

Determines whether the up-axis of the animated object for this motion path is aligned with the normal vector of the path geometry.

Parameters

[out] ReturnStatus Status Code

Returns

true Normal vector is used for object alignment.
false Normal vector is not used for object alignment.

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setInverseNormal ( bool invert )

If true, enable alignment of the up axis of the moving object(s) to the opposite direction of the normal vector of the path geometry.

Parameters

[in] invert Specifies if inverse normal is used

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

bool inverseNormal ( MStatus * ReturnStatus = NULL )

Determines whether the up-axis of the animated object for this motion path is aligned to the opposite direction of the normal vector of the path geometry.

Parameters

[out] ReturnStatus Status Code

Returns

true Inverse normal vector is used for object alignment.
false Inverse normal vector is not used for object alignment.

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUStart ( double start )

Sets the starting value of the u parameterization for the animation.

Parameters

[in] start the new start value

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUEnd ( double end )

Sets the end value of the u parameterization for the animation.

Parameters

[in] end the new end value

Returns: Status Code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

double uStart ( MStatus * ReturnStatus = NULL )

Returns the starting value of the u parameterization for the animation.

Parameters

[out] ReturnStatus Status Code

Returns: The starting value

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

double uEnd ( MStatus * ReturnStatus = NULL )

Returns the end value of the u parameterization for the animation.

Parameters

[out] ReturnStatus Status Code

Returns: The end value

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUTimeStart ( MTime & start )

Sets the starting time of the animation for the u parameter.

Parameters

[in] start the new start time

Returns: Status code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MStatus setUTimeEnd ( MTime & end )

Sets the end time of the animation for the u parameter.

Parameters

[in] end the new end time

Returns: Status code

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MTime uTimeStart ( MStatus * ReturnStatus = NULL )

Returns the start time of the animation for the u parameter.

Parameters

[out] ReturnStatus Status Code

Returns: The starting time

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MTime uTimeEnd ( MStatus * ReturnStatus = NULL )

Returns the end time of the animation for the u parameter.

Parameters

[out] ReturnStatus Status Code

Returns: The end time

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

unsigned int numPositionMarkers ( MStatus * ReturnStatus = NULL )

Returns the number of position markers on this motion path.

Parameters

[out] ReturnStatus Status Code

Returns: The number of markers

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MObject getPositionMarker	(	unsigned int	markerNum,
		MStatus *	ReturnStatus = `NULL`
	)

Gets the position marker where markerNum is the order in which the marker was created.

Parameters

[in]	markerNum	The number of the marker
[out]	ReturnStatus	Status Code

Returns: The position marker

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

unsigned int numOrientationMarkers ( MStatus * ReturnStatus = NULL )

Returns the number of orientation markers on this motion path.

Parameters

[out] ReturnStatus Status Code

Returns: The number of markers

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

MObject getOrientationMarker	(	unsigned int	markerNum,
		MStatus *	ReturnStatus = `NULL`
	)

Gets the orientation marker where markerNum is the order in which the marker was created.

Parameters

[in]	markerNum	The number of the marker
[out]	ReturnStatus	Status Code

Returns: The orientation marker

Status Codes:

MS::kSuccess Member was successful
MS::kFailure An object error has occurred

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

MFnMotionPath.h
MFnMotionPath.cpp

MFnMotionPath Class Reference

Class Description

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