vtkFlyingEdges2D Class Reference

generate isoline(s) from a structured points (image) dataset More...

#include <vtkFlyingEdges2D.h>

Inheritance diagram for vtkFlyingEdges2D:

Collaboration diagram for vtkFlyingEdges2D:

Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Types inherited from vtkPolyDataAlgorithm
typedef vtkAlgorithm	Superclass
Public Types inherited from vtkAlgorithm
enum	DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }
	Values used for setting the desired output precision for various algorithms. More...
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...
vtkFlyingEdges2D *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...
vtkMTimeType	GetMTime () override
	Because we delegate to vtkContourValues. More...
void	SetValue (int i, double value)
	Set a particular contour value at contour number i. More...
double	GetValue (int i)
	Get the ith contour value. More...
double *	GetValues ()
	Get a pointer to an array of contour values. More...
void	GetValues (double *contourValues)
	Fill a supplied list with contour values. More...
void	SetNumberOfContours (int number)
	Set the number of contours to place into the list. More...
int	GetNumberOfContours ()
	Get the number of contours in the list of contour values. More...
void	GenerateValues (int numContours, double range[2])
	Generate numContours equally spaced contour values between specified range. More...
void	GenerateValues (int numContours, double rangeStart, double rangeEnd)
	Generate numContours equally spaced contour values between specified range. More...
virtual void	SetComputeScalars (vtkTypeBool)
	Option to set the point scalars of the output. More...
virtual vtkTypeBool	GetComputeScalars ()
	Option to set the point scalars of the output. More...
virtual void	ComputeScalarsOn ()
	Option to set the point scalars of the output. More...
virtual void	ComputeScalarsOff ()
	Option to set the point scalars of the output. More...
virtual void	SetArrayComponent (int)
	Set/get which component of the scalar array to contour on; defaults to 0. More...
virtual int	GetArrayComponent ()
	Set/get which component of the scalar array to contour on; defaults to 0. More...
Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithm *	NewInstance () const
int	ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	see vtkAlgorithm for details More...
vtkDataObject *	GetInput ()
vtkDataObject *	GetInput (int port)
vtkPolyData *	GetPolyDataInput (int port)
vtkPolyData *	GetOutput ()
	Get the output data object for a port on this algorithm. More...
vtkPolyData *	GetOutput (int)
	Get the output data object for a port on this algorithm. More...
virtual void	SetOutput (vtkDataObject *d)
	Get the output data object for a port on this algorithm. More...
void	SetInputData (vtkDataObject *)
	Assign a data object as input. More...
void	SetInputData (int, vtkDataObject *)
	Assign a data object as input. More...
void	AddInputData (vtkDataObject *)
	Assign a data object as input. More...
void	AddInputData (int, vtkDataObject *)
	Assign a data object as input. More...
Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const
int	HasExecutive ()
	Check whether this algorithm has an assigned executive. More...
vtkExecutive *	GetExecutive ()
	Get this algorithm's executive. More...
virtual void	SetExecutive (vtkExecutive *executive)
	Set this algorithm's executive. More...
int	ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
	Version of ProcessRequest() that is wrapped. More...
virtual int	ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, vtkMTimeType *mtime)
	A special version of ProcessRequest meant specifically for the pipeline modified time request. More...
virtual int	ModifyRequest (vtkInformation *request, int when)
	This method gives the algorithm a chance to modify the contents of a request before or after (specified in the when argument) it is forwarded. More...
vtkInformation *	GetInputPortInformation (int port)
	Get the information object associated with an input port. More...
vtkInformation *	GetOutputPortInformation (int port)
	Get the information object associated with an output port. More...
int	GetNumberOfInputPorts ()
	Get the number of input ports used by the algorithm. More...
int	GetNumberOfOutputPorts ()
	Get the number of output ports provided by the algorithm. More...
void	UpdateProgress (double amount)
	Update the progress of the process object. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
	String based versions of SetInputArrayToProcess(). More...
vtkInformation *	GetInputArrayInformation (int idx)
	Get the info object for the specified input array to this algorithm. More...
void	RemoveAllInputs ()
	Remove all the input data. More...
vtkDataObject *	GetOutputDataObject (int port)
	Get the data object that will contain the algorithm output for the given port. More...
vtkDataObject *	GetInputDataObject (int port, int connection)
	Get the data object that will contain the algorithm input for the given port and given connection. More...
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
	Remove a connection from the given input port index. More...
virtual void	RemoveInputConnection (int port, int idx)
	Remove a connection given by index idx. More...
virtual void	RemoveAllInputConnections (int port)
	Removes all input connections. More...
virtual void	SetInputDataObject (int port, vtkDataObject *data)
	Sets the data-object as an input on the given port index. More...
virtual void	SetInputDataObject (vtkDataObject *data)
virtual void	AddInputDataObject (int port, vtkDataObject *data)
	Add the data-object as an input to this given port. More...
virtual void	AddInputDataObject (vtkDataObject *data)
vtkAlgorithmOutput *	GetOutputPort (int index)
	Get a proxy object corresponding to the given output port of this algorithm. More...
vtkAlgorithmOutput *	GetOutputPort ()
int	GetNumberOfInputConnections (int port)
	Get the number of inputs currently connected to a port. More...
int	GetTotalNumberOfInputConnections ()
	Get the total number of inputs for this algorithm. More...
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
	Get the algorithm output port connected to an input port. More...
vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
	Returns the algorithm and the output port index of that algorithm connected to a port-index pair. More...
vtkAlgorithm *	GetInputAlgorithm (int port, int index)
	Returns the algorithm connected to a port-index pair. More...
vtkAlgorithm *	GetInputAlgorithm ()
	Equivalent to GetInputAlgorithm(0, 0). More...
vtkExecutive *	GetInputExecutive (int port, int index)
	Returns the executive associated with a particular input connection. More...
vtkExecutive *	GetInputExecutive ()
	Equivalent to GetInputExecutive(0, 0) More...
vtkInformation *	GetInputInformation (int port, int index)
	Return the information object that is associated with a particular input connection. More...
vtkInformation *	GetInputInformation ()
	Equivalent to GetInputInformation(0, 0) More...
vtkInformation *	GetOutputInformation (int port)
	Return the information object that is associated with a particular output port. More...
virtual int	Update (int port, vtkInformationVector *requests)
	This method enables the passing of data requests to the algorithm to be used during execution (in addition to bringing a particular port up-to-date). More...
virtual int	Update (vtkInformation *requests)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdatePiece (int piece, int numPieces, int ghostLevels, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdateExtent (const int extents[6])
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdateTimeStep (double time, int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual void	UpdateInformation ()
	Bring the algorithm's information up-to-date. More...
virtual void	UpdateDataObject ()
	Create output object(s). More...
virtual void	PropagateUpdateExtent ()
	Propagate meta-data upstream. More...
virtual void	UpdateWholeExtent ()
	Bring this algorithm's outputs up-to-date. More...
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
	Convenience routine to convert from a linear ordering of input connections to a port/connection pair. More...
virtual vtkInformation *	GetInformation ()
	Set/Get the information object associated with this algorithm. More...
virtual void	SetInformation (vtkInformation *)
	Set/Get the information object associated with this algorithm. More...
void	Register (vtkObjectBase *o) override
	Participate in garbage collection. More...
void	UnRegister (vtkObjectBase *o) override
	Participate in garbage collection. More...
virtual void	SetAbortExecute (vtkTypeBool)
	Set/Get the AbortExecute flag for the process object. More...
virtual vtkTypeBool	GetAbortExecute ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	AbortExecuteOn ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	AbortExecuteOff ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	SetProgress (double)
	Set/Get the execution progress of a process object. More...
virtual double	GetProgress ()
	Set/Get the execution progress of a process object. More...
void	SetProgressText (const char *ptext)
	Set the current text message associated with the progress state. More...
virtual char *	GetProgressText ()
	Set the current text message associated with the progress state. More...
virtual unsigned long	GetErrorCode ()
	The error code contains a possible error that occurred while reading or writing the file. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...
virtual void	Update (int port)
	Bring this algorithm's outputs up-to-date. More...
virtual void	Update ()
	Bring this algorithm's outputs up-to-date. More...
virtual void	SetReleaseDataFlag (int)
	Turn release data flag on or off for all output ports. More...
virtual int	GetReleaseDataFlag ()
	Turn release data flag on or off for all output ports. More...
void	ReleaseDataFlagOn ()
	Turn release data flag on or off for all output ports. More...
void	ReleaseDataFlagOff ()
	Turn release data flag on or off for all output ports. More...
int	UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...
int *	GetUpdateExtent ()
	These functions return the update extent for output ports that use 3D extents. More...
int *	GetUpdateExtent (int port)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int port, int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...
int	GetUpdatePiece ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdatePiece (int port)
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateNumberOfPieces ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateNumberOfPieces (int port)
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateGhostLevel ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateGhostLevel (int port)
	These functions return the update extent for output ports that use piece extents. More...
void	SetProgressObserver (vtkProgressObserver *)
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...
virtual vtkProgressObserver *	GetProgressObserver ()
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...
Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)
virtual void	DebugOn ()
	Turn debugging output on. More...
virtual void	DebugOff ()
	Turn debugging output off. More...
bool	GetDebug ()
	Get the value of the debug flag. More...
void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...
virtual void	Modified ()
	Update the modification time for this object. More...
void	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
vtkTypeBool	HasObserver (unsigned long event)
vtkTypeBool	HasObserver (const char *event)
int	InvokeEvent (unsigned long event)
int	InvokeEvent (const char *event)
unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
unsigned long	AddObserver (const char *event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObservers (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkTypeBool	HasObserver (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...
int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...
int	InvokeEvent (const char *event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...
virtual void	Delete ()
	Delete a VTK object. More...
virtual void	FastDelete ()
	Delete a reference to this object. More...
void	InitializeObjectBase ()
void	Print (ostream &os)
	Print an object to an ostream. More...
int	GetReferenceCount ()
	Return the current reference count of this object. More...
void	SetReferenceCount (int)
	Sets the reference count. More...
void	PrintRevisions (ostream &)
	Legacy. More...
virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...
virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

Static Public Member Functions
static vtkFlyingEdges2D *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkFlyingEdges2D *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkPolyDataAlgorithm
static vtkPolyDataAlgorithm *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkPolyDataAlgorithm *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)
static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
	Keys used to specify input port requirements. More...
static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()
static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()
static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()
static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()
static vtkInformationIntegerKey *	INPUT_PORT ()
static vtkInformationIntegerKey *	INPUT_CONNECTION ()
static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
	This key tells the executive that a particular output port is capable of producing an arbitrary subextent of the whole extent. More...
static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
	Key that tells the pipeline that a particular algorithm can or cannot handle piece request. More...
static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
	If the DefaultExecutivePrototype is set, a copy of it is created in CreateDefaultExecutive() using NewInstance(). More...
Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...
static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...
static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkFlyingEdges2D ()
	~vtkFlyingEdges2D () override
int	RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	This is called by the superclass. More...
int	FillInputPortInformation (int port, vtkInformation *info) override
	Fill the input port information objects for this algorithm. More...
Protected Member Functions inherited from vtkPolyDataAlgorithm
	vtkPolyDataAlgorithm ()
	~vtkPolyDataAlgorithm () override
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
	This is called by the superclass. More...
int	FillOutputPortInformation (int port, vtkInformation *info) override
	Fill the output port information objects for this algorithm. More...
Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()
	~vtkAlgorithm () override
virtual void	SetNumberOfInputPorts (int n)
	Set the number of input ports used by the algorithm. More...
virtual void	SetNumberOfOutputPorts (int n)
	Set the number of output ports provided by the algorithm. More...
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
	Get the assocition of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
	This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector. More...
virtual vtkExecutive *	CreateDefaultExecutive ()
	Create a default executive. More...
void	ReportReferences (vtkGarbageCollector *) override
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
	Replace the Nth connection on the given input port. More...
virtual void	SetNumberOfInputConnections (int port, int n)
	Set the number of input connections on the given input port. More...
void	SetInputDataInternal (int port, vtkDataObject *input)
	These methods are used by subclasses to implement methods to set data objects directly as input. More...
void	AddInputDataInternal (int port, vtkDataObject *input)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...
virtual void	SetErrorCode (unsigned long)
	The error code contains a possible error that occurred while reading or writing the file. More...
Protected Member Functions inherited from vtkObject
	vtkObject ()
	~vtkObject () override
void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void	InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events. More...
void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events. More...
Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()
virtual	~vtkObjectBase ()
virtual void	CollectRevisions (ostream &)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
vtkContourValues *	ContourValues
vtkTypeBool	ComputeScalars
int	ArrayComponent
Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information
double	Progress
char *	ProgressText
vtkProgressObserver *	ProgressObserver
unsigned long	ErrorCode
	The error code contains a possible error that occurred while reading or writing the file. More...
Protected Attributes inherited from vtkObject
bool	Debug
vtkTimeStamp	MTime
vtkSubjectHelper *	SubjectHelper
Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
vtkTypeBool	AbortExecute
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()
Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

generate isoline(s) from a structured points (image) dataset

vtkFlyingEdges2D is a reference implementation of the 2D version of the flying edges algorithm. It is designed to be highly scalable (i.e., parallelizable) for large data. It implements certain performance optimizations including computational trimming to rapidly eliminate processing of data regions, packed bit representation of case table values, single edge intersection, elimination of point merging, and elimination of any reallocs (due to dynamic data insertion). Note that computational trimming is a method to reduce total computational cost in which partial computational results can be used to eliminate future computations.

This is a four-pass algorithm. The first pass processes all x-edges and builds x-edge case values (which, when the two x-edges defining a pixel are combined, are equivalent to vertex-based case table except edge-based approaches are separable to parallel computing). Next x-pixel rows are processed to gather information from y-edges (basically to count the number of edge intersections and lines generated). In the third pass a prefix sum is used to count and allocate memory for the output primitives. Finally in the fourth pass output primitives are generated into pre-allocated arrays. This implementation uses pixel cell axes (a x-y dyad located at the pixel origin) to ensure that each edge is intersected at most one time.

See the paper "Flying Edges: A High-Performance Scalable Isocontouring Algorithm" by Schroeder, Maynard, Geveci. Proc. of LDAV 2015. Chicago, IL.

Warning

This filter is specialized to 2D images. This implementation can produce degenerate line segments (i.e., zero-length line segments).

If you are interested in extracting segmented regions from a label mask, consider using vtkDiscreteFlyingEdges2D.

This class has been threaded with vtkSMPTools. Using TBB or other non-sequential type (set in the CMake variable VTK_SMP_IMPLEMENTATION_TYPE) may improve performance significantly.

See also

vtkFlyingEdges3D vtkContourFilter vtkSynchronizedTemplates2D vtkMarchingSquares vtkDiscreteFlyingEdges2D

Tests:

vtkFlyingEdges2D (Tests)

Definition at line 75 of file vtkFlyingEdges2D.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkFlyingEdges2D::Superclass

Definition at line 79 of file vtkFlyingEdges2D.h.

Constructor & Destructor Documentation

vtkFlyingEdges2D::vtkFlyingEdges2D ( )

protected

vtkFlyingEdges2D::~vtkFlyingEdges2D ( )

overrideprotected

Member Function Documentation

static vtkFlyingEdges2D* vtkFlyingEdges2D::New ( )

static

static vtkTypeBool vtkFlyingEdges2D::IsTypeOf ( const char *  type )

static

virtual vtkTypeBool vtkFlyingEdges2D::IsA ( const char *  name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

static vtkFlyingEdges2D* vtkFlyingEdges2D::SafeDownCast ( vtkObjectBase *  o )

static

virtual vtkObjectBase* vtkFlyingEdges2D::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

vtkFlyingEdges2D* vtkFlyingEdges2D::NewInstance

(

)

const

void vtkFlyingEdges2D::PrintSelf ( ostream &  os, vtkIndent  indent  )

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkPolyDataAlgorithm.

vtkMTimeType vtkFlyingEdges2D::GetMTime ( )

overridevirtual

Because we delegate to vtkContourValues.

Reimplemented from vtkObject.

void vtkFlyingEdges2D::SetValue ( int  i, double  value  )

inline

Set a particular contour value at contour number i.

The index i ranges between 0<=i<NumberOfContours.

Definition at line 91 of file vtkFlyingEdges2D.h.

double vtkFlyingEdges2D::GetValue ( int  i )

inline

Get the ith contour value.

Definition at line 97 of file vtkFlyingEdges2D.h.

double* vtkFlyingEdges2D::GetValues ( )

inline

Get a pointer to an array of contour values.

There will be GetNumberOfContours() values in the list.

Definition at line 104 of file vtkFlyingEdges2D.h.

void vtkFlyingEdges2D::GetValues ( double *  contourValues )

inline

Fill a supplied list with contour values.

There will be GetNumberOfContours() values in the list. Make sure you allocate enough memory to hold the list.

Definition at line 112 of file vtkFlyingEdges2D.h.

void vtkFlyingEdges2D::SetNumberOfContours ( int  number )

inline

Set the number of contours to place into the list.

You only really need to use this method to reduce list size. The method SetValue() will automatically increase list size as needed.

Definition at line 120 of file vtkFlyingEdges2D.h.

int vtkFlyingEdges2D::GetNumberOfContours ( )

inline

Get the number of contours in the list of contour values.

Definition at line 126 of file vtkFlyingEdges2D.h.

void vtkFlyingEdges2D::GenerateValues ( int  numContours, double  range[2]  )

inline

Generate numContours equally spaced contour values between specified range.

Contour values will include min/max range values.

Definition at line 133 of file vtkFlyingEdges2D.h.

void vtkFlyingEdges2D::GenerateValues ( int  numContours, double  rangeStart, double  rangeEnd  )

inline

Generate numContours equally spaced contour values between specified range.

Contour values will include min/max range values.

Definition at line 140 of file vtkFlyingEdges2D.h.

virtual void vtkFlyingEdges2D::SetComputeScalars ( vtkTypeBool  )

virtual

Option to set the point scalars of the output.

The scalars will be the iso value of course. By default this flag is on.

virtual vtkTypeBool vtkFlyingEdges2D::GetComputeScalars ( )

virtual

Option to set the point scalars of the output.

The scalars will be the iso value of course. By default this flag is on.

virtual void vtkFlyingEdges2D::ComputeScalarsOn ( )

virtual

Option to set the point scalars of the output.

The scalars will be the iso value of course. By default this flag is on.

virtual void vtkFlyingEdges2D::ComputeScalarsOff ( )

virtual

Option to set the point scalars of the output.

The scalars will be the iso value of course. By default this flag is on.

virtual void vtkFlyingEdges2D::SetArrayComponent ( int  )

virtual

Set/get which component of the scalar array to contour on; defaults to 0.

virtual int vtkFlyingEdges2D::GetArrayComponent ( )

virtual

Set/get which component of the scalar array to contour on; defaults to 0.

int vtkFlyingEdges2D::RequestData ( vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector  )

overrideprotectedvirtual

This is called by the superclass.

This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

int vtkFlyingEdges2D::FillInputPortInformation ( int  port, vtkInformation *  info  )

overrideprotectedvirtual

Fill the input port information objects for this algorithm.

This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkPolyDataAlgorithm.

Member Data Documentation

vtkContourValues* vtkFlyingEdges2D::ContourValues

protected

Definition at line 168 of file vtkFlyingEdges2D.h.

vtkTypeBool vtkFlyingEdges2D::ComputeScalars

protected

Definition at line 170 of file vtkFlyingEdges2D.h.

int vtkFlyingEdges2D::ArrayComponent

protected

Definition at line 171 of file vtkFlyingEdges2D.h.

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

• /home/demarle/Source/VTK/release/8.2/build/Utilities/Doxygen/dox/Filters/Core/vtkFlyingEdges2D.h