Detailed Description

ScaleManip function set.

This class provides access to the built-in Maya scale manipulator. The manipulator consists of three constrained-axis scale handles for non-proportional scaling, and a central handle for proportional scaling.

The manipulator provides data to the plugin through the scale manipVal. The scale value is a vector consisting of X, Y, and Z scale values. Each scale value represents a factor controlling how much an object should be extended along that dimension. The scale values are absolute and the initial scale value has a default of <1.0,1.0,1.0>.

The manipulator can be configured either to display with an object (which must be a DAG node) or to display at an arbitrary point using the scaleCenter manipVal.

Examples:: componentScaleManip.cpp, and swissArmyManip.cpp.

#include <MFnScaleManip.h>

Inheritance diagram for MFnScaleManip:

[legend]

List of all members.

Public Member Functions
virtual MFn::Type	type () const
	Function set type.
virtual	~MFnScaleManip ()
	Destructor.
	MFnScaleManip ()
	Default constructor.
	MFnScaleManip (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
	MFnScaleManip (const MDagPath &object, MStatus *ret=NULL)
	Constructor.
MObject	create (MStatus *ReturnStatus=NULL)
	Creates a new ScaleManip, and attaches this function set to the new manipulator.
MObject	create (const MString &manipName, const MString &scaleName, MStatus *ReturnStatus=NULL)
	Creates a new ScaleManip, and attaches this function set to the new manipulator.
MStatus	connectToScalePlug (const MPlug &scalePlug)
	Create a 1-1 connection from the scale manipVal to the scalePlug parameter.
MStatus	connectToScaleCenterPlug (const MPlug &scaleCenterPlug)
	Create a 1-1 association of the scale center on the manipulator and the scaleCenterPlug parameter.
MStatus	setInitialScale (const MVector &scale)
	Sets the initial scale for the scale manipulator.
MStatus	displayWithNode (const MObject &node)
	Configures the manipulator to display with the node, causing the position of the manipulator to follow the position of the node whenever the node is moved.
MStatus	setSnapMode (bool snapEnabled)
	Sets the snap mode.
bool	isSnapModeOn () const
	Returns true when snap mode is on.
MStatus	setSnapIncrement (double snapInc)
	Sets the snap increment.
double	snapIncrement () const
	Returns the snapping increment in working units.
unsigned int	scaleIndex (MStatus *ReturnStatus=NULL) const
	Returns the index of the scale manipVal for this manipulator.
unsigned int	scaleCenterIndex (MStatus *ReturnStatus=NULL) const
	Returns the index of the scale center manipVal for this manipulator.
	MFnScaleManip (const MObject &object, MStatus *ret=NULL)
	Constructor.
Protected Member Functions
virtual const char *	className () const
	Class name.

Constructor & Destructor Documentation

~MFnScaleManip ( ) [virtual]

Destructor.

Class destructor.

MFnScaleManip	(	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

MFnScaleManip	(	const MDagPath &	object,
		MStatus *	ReturnStatus = `NULL`
	)

Constructor.

Class constructor that initializes the function set to the given constant MDagPath object.

Parameters:

[in]	object	The const MDagPath 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

MFnScaleManip	(	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]

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Function set type.

Return the class type : MFn::kScaleManip.

Reimplemented from MFnManip3D.

const char * className ( ) const [protected, virtual]

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Class name.

Return the class name : "MFnScaleManip".

Reimplemented from MFnManip3D.

MObject create ( MStatus * ReturnStatus = NULL )

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Creates a new ScaleManip, and attaches this function set to the new manipulator.

This method should only be used to create a non-composite manipulator, meaning that the manipulator is standalone and not part of a container.

When the manipulator is being used, the feedback line will display a string including "Scale", indicating that this manipulator is in use.

Parameters:

[out] ReturnStatus return status

Returns:: An object corresponding to the new manipulator

Status Codes:

MS::kSuccess operation successful
MS::kFailure operation failed

MObject create	(	const MString &	manipName,
		const MString &	scaleName,
		MStatus *	ReturnStatus = `NULL`
	)

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Creates a new ScaleManip, and attaches this function set to the new manipulator.

This method should only be used to create a non-composite manipulator, meaning that the manipulator is standalone and not part of a container.

When the manipulator is being used, the feedback line will display a string including scaleName, indicating that this manipulator is in use.

Parameters:

[in]	manipName	Name of the manip for UI purposes.
[in]	scaleName	Label for the scale value displayed in the feedback line.
[out]	ReturnStatus	Status code.

Returns:: An object corresponding to the new manipulator.

Status Codes:

MS::kSuccess Operation successful.
MS::kFailure Operation failed.

Reimplemented from MFnDependencyNode.

MStatus connectToScalePlug ( const MPlug & scalePlug )

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Create a 1-1 connection from the scale manipVal to the scalePlug parameter.

Any changes to the scale manipVal will be immediately reflected in the connected plug. Connecting to the "scale" plug on a transform node will produce similar behavior to the built-in scale manipulator.

The plug must have a data type of MFnNumericData::k3Double.

Parameters:

[in] scalePlug The plug to connect the scale value to

Returns:

MS::kSuccess Successfully connected the plug
MS::kFailure Could not connect to the plug or an invalid object is attached to the function set

MStatus connectToScaleCenterPlug ( const MPlug & scaleCenterPlug )

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Create a 1-1 association of the scale center on the manipulator and the scaleCenterPlug parameter.

When both the scale center is attached to a plug and the displayWithNode() method has been called, the manipulator will display with the node regardless of the connection made to the scale center.

The plug must have a data type of MFnNumericData::k3Double.

Parameters:

[in] scaleCenterPlug The plug to connect the scale center to

Returns:

MS::kSuccess Successfully connected the plug
MS::kFailure Could not connect to the plug or an invalid object is attached to the function set

MStatus setInitialScale ( const MVector & scale )

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Sets the initial scale for the scale manipulator.

Setting the initial scale will prevent the manipulator from jumping back to the default scale when there is already an existing scale on the target plug.

Parameters:

[in] scale The initial scale

Returns:

MS::kSuccess Successfully set the initial scale
MS::kFailure Could not set the scale or an invalid object is attached to the function set

MStatus displayWithNode ( const MObject & node )

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Configures the manipulator to display with the node, causing the position of the manipulator to follow the position of the node whenever the node is moved.

The node must be a DAG object.

Parameters:

[in] node The node the manipulator should display with

Returns:

MS::kSuccess Successfully configured display with the node
MS::kInvalidParameter Invalid node parameter
MS::kFailure Could not display with the node or an invalid object is attached to the function set

MStatus setSnapMode ( bool snapEnabled )

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Sets the snap mode.

The snap modes can be either on (true) or off (false). When snap mode is on, scale values will snap to scale value within some interval apart. The interval is set using setSnapIncrement().

Parameters:

[in] snapEnabled The new snap mode

Returns:

MS::kSuccess Successfully set the snap mode
MS::kFailure The function set is attached to an invalid object

bool isSnapModeOn ( ) const

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Returns true when snap mode is on.

Returns:: Snap mode

MStatus setSnapIncrement ( double snapInc )

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Sets the snap increment.

The snap increment is specified in the working unit, and is the distance between snap points when dragging the scale handles.

Parameters:

[in] snapInc The new snap increment

Returns:

MS::kSuccess Successfully set the snap increment
MS::kFailure The function set is attached to an invalid object

double snapIncrement ( ) const

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Returns the snapping increment in working units.

Returns:: Snapping increment

unsigned int scaleIndex ( MStatus * ReturnStatus = NULL ) const

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Returns the index of the scale manipVal for this manipulator.

Parameters:

[out] ReturnStatus return status

Returns:: Scale index

Status Codes:

MS::kSuccess Successfully retrieved the index
MS::kFailure Failed to retrieve the index or the object attached to this function set is invalid

unsigned int scaleCenterIndex ( MStatus * ReturnStatus = NULL ) const

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Returns the index of the scale center manipVal for this manipulator.

Note that the scale center is only used for display of the manipulator and has no effect on scale values produced by the manipulator.

Parameters:

[out] ReturnStatus return status

Returns:: Scale center index

Status Codes:

MS::kSuccess Successfully retrieved the index
MS::kFailure Failed to retrieve the index or the object attached to this function set is invalid

MFnScaleManip Class Reference

OpenMayaUI - API module for user interface | FunctionSet classes

Detailed Description

Public Member Functions

Protected Member Functions

Constructor & Destructor Documentation

Member Function Documentation