#include <MFnLatticeDeformer.h>

Class Description

FFD lattice deformer function set.

MFnLatticeDeformer is the function set for lattice deformers. Lattice deformers use FFDs to deform geometry.

The lattice deformer is actually a small network of dependency nodes in the dependency graph. This function set is provided to make manipulation of the network easier. The main deformer node should be given to this function set as its object.

There are two lattices associated with a lattice deformer. There is a base lattice that defines the start position for the lattice. The second lattice is the version that is modified to deform the geometry. The difference between the two lattices defines the deformation that is applied to the geometry.

The base lattice is a very simple shape that only defines a box in space. The base lattice should be modified by using the standard DAG transformation support. The second deformable lattice has geometry that can be modified using the MFnLattice function set.

For a piece of geometry to be modified by this deformer, the geometry must be attached to the deformer (use addGeometry method) and the geometry must be contained within the base lattice. The resetLattice method can be used to make the lattice resize to the bounding box of the attached geometry.

Examples:: latticeNoise/latticeNoiseCmd.cpp.

Inheritance diagram for MFnLatticeDeformer:

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

virtual	~MFnLatticeDeformer ()
	Destructor.

	MFnLatticeDeformer ()
	Default constructor.

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

MObject	create (unsigned int xDiv, unsigned int yDiv, unsigned int zDiv, MStatus *ReturnStatus=NULL)
	Creates a new lattice deformer with the given number of divisions. More...

MStatus	addGeometry (const MObject &object)
	Adds a piece of geometry to the deformation. More...

MStatus	removeGeometry (const MObject &object)
	Removes a piece of geometry from the deformation. More...

MStatus	getAffectedGeometry (MObjectArray &objects)
	The geometry affected by this deformer is packed into the provided list of MObjects. More...

MStatus	getDivisions (unsigned int &x, unsigned int &y, unsigned int &z)
	Retrieve the number of divisions in each of the X, Y, and Z directions. More...

MStatus	setDivisions (unsigned int x, unsigned int y, unsigned int z)
	Set the number of divisions in each of the X, Y, and Z directions. More...

MStatus	resetLattice (bool centerLattice=false)
	This method resets the deformed lattice to match the base lattice. More...

MObject	deformLattice (MStatus *ReturnStatus=NULL)
	This returns the deformed version of the lattice. More...

MObject	baseLattice (MStatus *ReturnStatus=NULL)
	This returns the base version of the lattice that describes the region of space deformed by the lattice. More...

	MFnLatticeDeformer (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
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...

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...

Constructor & Destructor Documentation

MFnLatticeDeformer	(	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

MFnLatticeDeformer	(	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::kFFD.

Reimplemented from MFnDependencyNode.

OPENMAYA_MAJOR_NAMESPACE_OPEN const char * className ( ) const

protectedvirtual

Class name.

Return the class name : "MFnLatticeDeformer".

Reimplemented from MFnDependencyNode.

MObject create	(	unsigned int	xDiv,
		unsigned int	yDiv,
		unsigned int	zDiv,
		MStatus *	ReturnStatus = `NULL`
	)

Creates a new lattice deformer with the given number of divisions.

This function set's object is set to be the new lattice node.

Parameters

[in]	xDiv	number of divisions in x (must be at least 2)
[in]	yDiv	number of divisions in y (must be at least 2)
[in]	zDiv	number of divisions in z (must be at least 2)
[out]	ReturnStatus	return status

Returns: Returns a handle to the new deformer

Status Codes:

MS::kSuccess operation successful
MS::kFailure unexpected failure
MS::kLicenseFailure application not licensed for attempted operation
MS::kInsufficientMemory out of memory

Examples:: latticeNoise/latticeNoiseCmd.cpp.

MStatus addGeometry ( const MObject & object )

Adds a piece of geometry to the deformation.

After adding new geometry to the deformation, one must make sure that the new geometry is contained within the base lattice for the deformation to affect it. The easiest way to do this is to reset the deformation with the flag that causes it to expand the base lattice to the bounding box of all of the contained geometry.

Parameters

[in] object the geometry

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure addition of geometry failed
MS::kInsufficientMemory out of memory

Examples:: latticeNoise/latticeNoiseCmd.cpp.

MStatus removeGeometry ( const MObject & object )

Removes a piece of geometry from the deformation.

Parameters

[in] object the geometry

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure addition of geometry failed
MS::kInsufficientMemory out of memory

MStatus getAffectedGeometry ( MObjectArray & objects )

The geometry affected by this deformer is packed into the provided list of MObjects.

Each of the MObjects will be a DAG node that has geometry.

Parameters

[out] objects storage for the returned array

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object
MS::kInsufficientMemory out of memory

MStatus getDivisions	(	unsigned int &	x,
		unsigned int &	y,
		unsigned int &	z
	)

Retrieve the number of divisions in each of the X, Y, and Z directions.

The number of divisions specifies the resolution of the lattice.

Parameters

[out]	x	a reference parameter that on return contains the number of divisions in the X direction
[out]	y	a reference parameter that on return contains the number of divisions in the Y direction
[out]	z	a reference parameter that on return contains the number of divisions in the Z direction

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object
MS::kInsufficientMemory out of memory

MStatus setDivisions	(	unsigned int	x,
		unsigned int	y,
		unsigned int	z
	)

Set the number of divisions in each of the X, Y, and Z directions.

The number of divisions specifies the resolution of the lattice.

Parameters

[in]	x	number of divisions in the X direction
[in]	y	number of divisions in the Y direction
[in]	z	number of divisions in the Z direction

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object
MS::kInsufficientMemory out of memory

MStatus resetLattice ( bool centerLattice = false )

This method resets the deformed lattice to match the base lattice.

The center option will resize the lattice to be the bounding box of all contained geometry. If instanced objects are being deformed, then then centering option will take the first instance found. So, it is possible to get unexpected results when centering around instanced objects.

Parameters

[in] centerLattice whether to center the lattice

Returns: Return status

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object or there was an unexpected error

Examples:: latticeNoise/latticeNoiseCmd.cpp.

MObject deformLattice ( MStatus * ReturnStatus = NULL )

This returns the deformed version of the lattice.

The deformed lattice is a shape in the DAG and should be modified using the MFnLattice function set.

Parameters

[out] ReturnStatus return status

Returns: Handle for the deformed lattice shape

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object or there was an unexpected error

Examples:: latticeNoise/latticeNoiseCmd.cpp.

MObject baseLattice ( MStatus * ReturnStatus = NULL )

This returns the base version of the lattice that describes the region of space deformed by the lattice.

The returned base lattice is a shape in the DAG and can be accessed using the MFnDagNode function set.

Parameters

[out] ReturnStatus return status

Returns: Handle for the base lattice shape

Status Codes:

MS::kSuccess operation successful
MS::kFailure function set doesn not have a valid object or there was an unexpected error

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

MFnLatticeDeformer.h
MFnLatticeDeformer.cpp

MFnLatticeDeformer Class Reference

Class Description

Public Member Functions

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation