#include <MPxImagePlane.h>

Class Description

Base class for user defined imagePlane nodes.

MPxImagePlane provides you with the ability to write your own image plane classes. This allows you to support non-standard image data in an image plane or change the standard behaviour of the image plane.

Note, once you have created a custom image plane and created the node in a scene. You must attach the image plane to a camera using the 'imagePlane' attribute on the 'cameraShape'.

Examples:: customImagePlane/customImagePlane.cpp.

Inheritance diagram for MPxImagePlane:

Public Member Functions
	MPxImagePlane ()
	Class constructor.

virtual	~MPxImagePlane ()
	Class destructor.

virtual MPxNode::Type	type () const
	Returns the type of node that this is. More...

virtual MStatus	loadImageMap (const MString &fileName, int frame, MImage &image)
	Override this method to load the file of name fileName into the image MImage. More...

bool	getExactImageFile (const MString &refFileName, MString &actualName)
	API users can call this method to resolve a file name. More...

MString	exactImageFile (const MString &refFileName)
	API users can call this method to resolve a file name. More...

void	refreshImage ()
	Forces the image plane to be refreshed.

void	setImageDirty ()
	Forces the image plane to be reloaded on the next refresh.

Public Member Functions inherited from MPxNode
	MPxNode ()
	Constructor. More...

virtual	~MPxNode ()
	Destructor.

virtual void	postConstructor ()
	Post constructor. More...

virtual MStatus	compute (const MPlug &plug, MDataBlock &dataBlock)
	This method should be overridden in user defined nodes. More...

virtual bool	getInternalValueInContext (const MPlug &plug, MDataHandle &dataHandle, MDGContext &ctx)
	This method is overridden by nodes that store attribute data in some internal format. More...

virtual bool	setInternalValueInContext (const MPlug &plug, const MDataHandle &dataHandle, MDGContext &ctx)
	This method is overridden by nodes that store attribute data in some internal format. More...

virtual bool	getInternalValue (const MPlug &plug, MDataHandle &dataHandle)
	This method is obsolete. More...

virtual bool	setInternalValue (const MPlug &plug, const MDataHandle &dataHandle)
	This method is obsolete. More...

virtual int	internalArrayCount (const MPlug &plug, const MDGContext &ctx) const
	This method is overridden by nodes that have internal array attributes which are not stored in Maya's datablock. More...

virtual void	copyInternalData (MPxNode *)
	This method is overridden by nodes that store attribute data in some internal format. More...

virtual MStatus	legalConnection (const MPlug &plug, const MPlug &otherPlug, bool asSrc, bool &isLegal) const
	This method allows you to check for legal connections being made to attributes of this node. More...

virtual MStatus	legalDisconnection (const MPlug &plug, const MPlug &otherPlug, bool asSrc, bool &isLegal) const
	This method allows you to check for legal disconnections being made to attributes of this node. More...

virtual MStatus	setDependentsDirty (const MPlug &plug, MPlugArray &plugArray)
	This method can be overridden in user defined nodes to specify which plugs should be set dirty based upon an input plug {plugBeingDirtied} which Maya is marking dirty. More...

virtual MStatus	preEvaluation (const MDGContext &context, const MEvaluationNode &evaluationNode)
	Prepare a node's internal state for threaded evaluation. More...

virtual MStatus	postEvaluation (const MDGContext &context, const MEvaluationNode &evaluationNode, PostEvaluationType evalType)
	Clean up node's internal state after threaded evaluation. More...

virtual SchedulingType	schedulingType () const
	When overridden this method controls the degree of parallelism supported by the node during threaded evaluation. More...

virtual MStatus	connectionMade (const MPlug &plug, const MPlug &otherPlug, bool asSrc)
	This method gets called when connections are made to attributes of this node. More...

virtual MStatus	connectionBroken (const MPlug &plug, const MPlug &otherPlug, bool asSrc)
	This method gets called when connections are broken with attributes of this node. More...

virtual MStatus	dependsOn (const MPlug &plug, const MPlug &otherPlug, bool &depends) const
	This method may be overridden by the user defined node. More...

virtual bool	isPassiveOutput (const MPlug &plug) const
	This method may be overridden by the user defined node if it wants to provide output attributes which do not prevent value modifications to the destination attribute. More...

virtual MStatus	shouldSave (const MPlug &plug, bool &isSaving)
	This method may be overridden by the user defined node. More...

virtual MPlug	passThroughToOne (const MPlug &plug) const
	This method may be overridden by nodes that have a one-to-one relationship between an input attribute and a corresponding output attribute. More...

virtual bool	passThroughToMany (const MPlug &plug, MPlugArray &plugArray) const
	This method is overridden by nodes that want to control the traversal behavior of some Maya search algorithms which traverse the history/future of shape nodes looking for directly related nodes. More...

virtual bool	isAbstractClass () const
	Override this class to return true if this node is an abstract node. More...

virtual MStringArray	getFilesToArchive (bool shortName=false, bool unresolvedName=false, bool markCouldBeImageSequence=false) const
	Use this method to return all external files used by this node. More...

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

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

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

virtual void	setExternalContent (const MExternalContentLocationTable &table)
	Changes the location of external content in batch. More...

virtual MTypeId	typeId () const
	Returns the TYPEID of this node. More...

virtual MString	typeName () const
	Returns the type name of this node. More...

virtual MString	name () const
	Returns the name of this particular instance of this class. More...

virtual MObject	thisMObject () const
	Returns the MObject associated with this user defined node. More...

virtual MStatus	setExistWithoutInConnections (bool flag)
	This method specifies whether or not the node can exist without input connections. More...

virtual bool	existWithoutInConnections (MStatus *ReturnStatus=NULL) const
	Determines whether or not this node can exist without input connections. More...

virtual MStatus	setExistWithoutOutConnections (bool flag)
	This method specifies whether or not the node can exist without output connections. More...

virtual bool	existWithoutOutConnections (MStatus *ReturnStatus=NULL) const
	Determines whether or not this node can exist without output connections. More...

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

Static Public Member Functions inherited from MPxNode
static MStatus	addAttribute (const MObject &attr)
	This method adds a new attribute to a user defined node type during the type's initialization. More...

static MStatus	inheritAttributesFrom (const MString &parentClassName)
	This method allows a class of plugin node to inherit all of the attributes of a second class of plugin node. More...

static MStatus	attributeAffects (const MObject &whenChanges, const MObject &isAffected)
	This method specifies that a particular input attribute affects a specific output attribute. More...

static const char *	className ()
	Returns the name of this class. More...

Static Public Attributes
static MObject	imageType
	controls the source of the image on the Image plane.

static MObject	imageName
	The file name of the image to be used in the image plane. More...

static MObject	useFrameExtension
	When this is on, the system will substitute the frame number in the Image Name with the number from the Frame Extension attribute (see below). More...

static MObject	frameExtension
	The frame extension in Image Name is replaced by the number here.

static MObject	coverage
	Controls the amount of the image that will be used in the image plane.

static MObject	coverageX
	The width in pixels of the area on the source image to be used.

static MObject	coverageY
	The height in pixels of the area on the source image to be used.

static MObject	coverageOrigin
	Controls the lower-left-corner of the area of the input image that will be used on the image plane. More...

static MObject	coverageOriginX
	The pixel position of the left edge of the area of the source image to be used.

static MObject	coverageOriginY
	The pixel position of the bottom edge of the area of the source image to be used.

static MObject	sourceTexture
	If the Type attribute is set to Texture, then this attribute is connected to the texture node used by the image plane. More...

static MObject	fit
	Controls how the image file will be fit into the image plane.

static MObject	displayMode
	Controls how the image plane will be displayed both in the 3d view, and when rendered. More...

static MObject	displayOnlyIfCurrent
	If enabled, you will only see the image plane when you are looking through the camera that the plane is attached to. More...

static MObject	colorGain
	A multiplier applied to the colors in the image plane.

static MObject	colorGainR
	The red component of Color Gain.

static MObject	colorGainG
	The green component of Color Gain.

static MObject	colorGainB
	The blue component of Color Gain.

static MObject	colorOffset
	An additive value applied to the colors in the image plane.

static MObject	colorOffsetR
	The red component of Color Offset.

static MObject	colorOffsetG
	The green component of Color Offset.

static MObject	colorOffsetB
	The blue component of Color Offset.

static MObject	alphaGain
	A multiplier that is applied to the alpha value.

static MObject	shadingSamplesOverride
	The flag to control if this surface should override global shading sample settings.

static MObject	shadingSamples
	Specifies the minimum number of shading samples should be taken for this surface during rendering.

static MObject	maxShadingSamples
	Specifies the max number of shading samples can be taken for this surface during rendering.

static MObject	lockedToCamera
	If enabled, the image plane is locked to the camera's position.

static MObject	depth
	Controls the distance of the plane from the camera.

static MObject	squeezeCorrection
	Applies a horizontal scaling to an image.

static MObject	size
	Controls the width and height of the image plane.

static MObject	sizeX
	Image plane width.

static MObject	sizeY
	Image plane height.

static MObject	offset
	Controls how much the center of the image plane is offset from the centre of the viewing frustum of the camera. More...

static MObject	offsetX
	Horizontal component of Offset.

static MObject	offsetY
	Vertical component of Offset.

static MObject	center
	Controls the world-space position of the center of the image plane. More...

static MObject	centerX
	X component of Center.

static MObject	centerY
	Y component of Center.

static MObject	centerZ
	Z component of Center.

static MObject	width
	Controls the width of the image plane in world space.

static MObject	height
	Controls the height of the image plane in world space.

static MObject	visibleInReflections
	When ray tracing, controls whether the image plane will sppear in reflected surfaces. More...

static MObject	visibleInRefractions
	When ray tracing, controls whether the image plane will appear when seen through a transparent, refractive surface. More...

static MObject	rotate
	Rotation of the image plane around the view vector.

static MObject	alreadyPremult
	Indicates if the image plane has already been pre-multiplied by its alpha. More...

static MObject	useDepthMap
	Indicates that the image plane has depth information.

static MObject	composite
	Indicates whether or not the image plane's color should be composited into the final image. More...

static MObject	depthOversample
	Indicates if the depth information is at a higher resolution than the image resolution. More...

static MObject	separateDepth
	Users can specify a depth buffer that is larger than the image buffer using the 'depthFile' attribute. More...

static MObject	depthFile
	Separate file that contains depth information.

static MObject	depthBias
	Depth offset value – centered at the center of the view frustum.

static MObject	depthScale
	Scale the depth – centered at the center of the view frustum.

Static Public Attributes inherited from MPxNode
static MObject	message
	message attribute

static MObject	isHistoricallyInteresting
	is historically interesting attribute

static MObject	caching
	caching attribute

static MObject	state
	state attribute

static MObject	frozen
	frozen attribute

Additional Inherited Members
Public Types inherited from MPxNode
enum	Type { kDependNode, kLocatorNode, kDeformerNode, kManipContainer, kSurfaceShape, kFieldNode, kEmitterNode, kSpringNode, kIkSolverNode, kHardwareShader, kHwShaderNode, kTransformNode, kObjectSet, kFluidEmitterNode, kImagePlaneNode, kParticleAttributeMapperNode, kCameraSetNode, kConstraintNode, kManipulatorNode, kMotionPathNode, kClientDeviceNode, kThreadedDeviceNode, kAssembly, kSkinCluster, kGeometryFilter, kBlendShape, kLast }
	Defines the type of node. More...

enum	SchedulingType { kParallel, kSerial, kGloballySerial, kUntrusted, kDefaultScheduling = kSerial }
	Defines the degree of parallelism of a node. More...

Protected Member Functions inherited from MPxNode
virtual MDataBlock	forceCache (MDGContext &ctx=MDGContext::fsNormal)
	USE _forceCache() IN SCRIPT. More...

virtual void	setMPSafe (bool flag)
	USE _setMPSafe() IN SCRIPT. More...

virtual MStatus	setDoNotWrite (bool flag)
	USE _setDoNotWrite() IN SCRIPT. More...

virtual bool	doNotWrite (MStatus *ReturnStatus=NULL) const
	USE _doNotWrite() IN SCRIPT. More...

Member Function Documentation

MPxNode::Type type ( ) const

virtual

Returns the type of node that this is.

This is used to differentiate user defined nodes that are derived off different MPx base classes.

It is not necessary to override this method.

Returns: Type of the node

Reimplemented from MPxNode.

MStatus loadImageMap	(	const MString &	fileName,
		int	frame,
		MImage &	image
	)

virtual

Override this method to load the file of name fileName into the image MImage.

Parameters

[in]	fileName	The name of the file to be loaded.
[in]	frame	The frame number to be displayed.
[in]	image	The image representing the image plane data.

Returns: MStatus::kSuccss The file was successfully loaded.

Examples:: customImagePlane/customImagePlane.cpp.

bool getExactImageFile	(	const MString &	refFileName,
		MString &	actualName
	)

API users can call this method to resolve a file name.

Sometimes the file path specified by the user node are relative or contain environment variables that require expansion. Also getExactImageFile() will try to find the image file sequence if use sequence is on. API users do not have to call this method, and it is only provided for convienence purposes. The full path name will be returned in actualName.

Python Notes

This method is not supported in Python, see exactImageFile() instead

Parameters

[in]	refFileName	The file name to be expanded
[in]	actualName	The exact file name.

Returns

true The file was found and the file name was expanded.
false The file was not found and the file name was not expanded.

MString exactImageFile ( const MString & refFileName )

API users can call this method to resolve a file name.

Sometimes the file path specified by the user node are relative or contain environment variables that require expansion. Also getExactImageFile() will try to find the image file sequence if use sequence is on. API users do not have to call this method, and it is only provided for convienence purposes. The full path name will be returned in actualName.

Parameters

[in] refFileName The file name to be expanded

Returns: String containing the image file name, will be empty string on failure

const char * className ( )

static

Returns the name of this class.

Returns: The name of this class.

Member Data Documentation

MObject imageName

static

The file name of the image to be used in the image plane.

Only used if Type is set to Image File.

MObject useFrameExtension

static

When this is on, the system will substitute the frame number in the Image Name with the number from the Frame Extension attribute (see below).

MObject coverageOrigin

static

Controls the lower-left-corner of the area of the input image that will be used on the image plane.

MObject sourceTexture

static

If the Type attribute is set to Texture, then this attribute is connected to the texture node used by the image plane.

MObject displayMode

static

Controls how the image plane will be displayed both in the 3d view, and when rendered.

MObject displayOnlyIfCurrent

static

If enabled, you will only see the image plane when you are looking through the camera that the plane is attached to.

MObject offset

static

Controls how much the center of the image plane is offset from the centre of the viewing frustum of the camera.

MObject center

static

Controls the world-space position of the center of the image plane.

MObject visibleInReflections

static

When ray tracing, controls whether the image plane will sppear in reflected surfaces.

MObject visibleInRefractions

static

When ray tracing, controls whether the image plane will appear when seen through a transparent, refractive surface.

MObject alreadyPremult

static

Indicates if the image plane has already been pre-multiplied by its alpha.

MObject composite

static

Indicates whether or not the image plane's color should be composited into the final image.

MObject depthOversample

static

Indicates if the depth information is at a higher resolution than the image resolution.

MObject separateDepth

static

Users can specify a depth buffer that is larger than the image buffer using the 'depthFile' attribute.

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

MPxImagePlane.h
MPxImagePlane.cpp

MPxImagePlane Class Reference

Class Description

Public Member Functions

Static Public Member Functions

Static Public Attributes

Additional Inherited Members

Member Function Documentation

Member Data Documentation