|
int | GetNumberOfThreadsUsed () |
| Return the number of threads actually used during execution.
|
|
vtkMTimeType | GetMTime () override |
| Get the MTime of this object also considering the locator.
|
|
|
virtual void | SetPadding (double) |
| Specify a padding for the bounding box of the points.
|
|
virtual double | GetPadding () |
| Specify a padding for the bounding box of the points.
|
|
|
virtual void | SetGenerateScalars (int) |
| Indicate whether to create a scalar array as part of the output.
|
|
virtual int | GetGenerateScalars () |
| Indicate whether to create a scalar array as part of the output.
|
|
void | SetGenerateScalarsToNone () |
| Indicate whether to create a scalar array as part of the output.
|
|
void | SetGenerateScalarsToPointIds () |
| Indicate whether to create a scalar array as part of the output.
|
|
void | SetGenerateScalarsToThreadIds () |
| Indicate whether to create a scalar array as part of the output.
|
|
|
virtual void | SetTransform (vtkAbstractTransform *) |
| Set / get the transform which is applied to points to generate a 2D problem.
|
|
virtual vtkAbstractTransform * | GetTransform () |
| Set / get the transform which is applied to points to generate a 2D problem.
|
|
|
virtual void | SetProjectionPlaneMode (int) |
| Define the method to project the input 3D points into a 2D plane for tessellation.
|
|
virtual int | GetProjectionPlaneMode () |
| Define the method to project the input 3D points into a 2D plane for tessellation.
|
|
void | SetProjectionPlaneModeToXYPlane () |
| Define the method to project the input 3D points into a 2D plane for tessellation.
|
|
void | SetProjectionPlaneModeToSpecifiedTransformPlane () |
| Define the method to project the input 3D points into a 2D plane for tessellation.
|
|
void | SetProjectionPlaneModeToBestFittingPlane () |
| Define the method to project the input 3D points into a 2D plane for tessellation.
|
|
|
virtual void | SetPointOfInterest (vtkIdType) |
| These methods are for debugging or instructional purposes.
|
|
virtual vtkIdType | GetPointOfInterest () |
| These methods are for debugging or instructional purposes.
|
|
virtual void | SetMaximumNumberOfTileClips (vtkIdType) |
| These methods are for debugging or instructional purposes.
|
|
virtual vtkIdType | GetMaximumNumberOfTileClips () |
| These methods are for debugging or instructional purposes.
|
|
|
vtkStaticPointLocator2D * | GetLocator () |
| Retrieve the internal locator to manually configure it, for example specifying the number of points per bucket.
|
|
|
virtual void | SetGenerateVoronoiFlower (vtkTypeBool) |
| These methods are for debugging or instructional purposes.
|
|
virtual vtkTypeBool | GetGenerateVoronoiFlower () |
| These methods are for debugging or instructional purposes.
|
|
virtual void | GenerateVoronoiFlowerOn () |
| These methods are for debugging or instructional purposes.
|
|
virtual void | GenerateVoronoiFlowerOff () |
| These methods are for debugging or instructional purposes.
|
|
|
virtual vtkSpheres * | GetSpheres () |
| Return the Voronoi flower (a collection of spheres) for the point of interest in the form of a vtkSpheres implicit function.
|
|
virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
|
|
vtkPolyDataAlgorithm * | NewInstance () const |
|
void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
|
|
vtkTypeBool | ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override |
| see vtkAlgorithm for details
|
|
vtkDataObject * | GetInput () |
|
vtkDataObject * | GetInput (int port) |
|
vtkPolyData * | GetPolyDataInput (int port) |
|
vtkPolyData * | GetOutput () |
| Get the output data object for a port on this algorithm.
|
|
vtkPolyData * | GetOutput (int) |
| Get the output data object for a port on this algorithm.
|
|
virtual void | SetOutput (vtkDataObject *d) |
| Get the output data object for a port on this algorithm.
|
|
void | SetInputData (vtkDataObject *) |
| Assign a data object as input.
|
|
void | SetInputData (int, vtkDataObject *) |
| Assign a data object as input.
|
|
void | AddInputData (vtkDataObject *) |
| Assign a data object as input.
|
|
void | AddInputData (int, vtkDataObject *) |
| Assign a data object as input.
|
|
virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
|
|
vtkAlgorithm * | NewInstance () const |
|
void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
|
|
int | HasExecutive () |
| Check whether this algorithm has an assigned executive.
|
|
vtkExecutive * | GetExecutive () |
| Get this algorithm's executive.
|
|
virtual void | SetExecutive (vtkExecutive *executive) |
| Set this algorithm's executive.
|
|
virtual vtkTypeBool | ProcessRequest (vtkInformation *request, vtkInformationVector **inInfo, vtkInformationVector *outInfo) |
| Upstream/Downstream requests form the generalized interface through which executives invoke a algorithm's functionality.
|
|
vtkTypeBool | ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo) |
| Version of ProcessRequest() that is wrapped.
|
|
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.
|
|
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.
|
|
vtkInformation * | GetInputPortInformation (int port) |
| Get the information object associated with an input port.
|
|
vtkInformation * | GetOutputPortInformation (int port) |
| Get the information object associated with an output port.
|
|
int | GetNumberOfInputPorts () |
| Get the number of input ports used by the algorithm.
|
|
int | GetNumberOfOutputPorts () |
| Get the number of output ports provided by the algorithm.
|
|
void | SetProgress (double) |
| SetProgress is deprecated.
|
|
void | UpdateProgress (double amount) |
| Update the progress of the process object.
|
|
virtual void | SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName) |
| String based versions of SetInputArrayToProcess().
|
|
vtkInformation * | GetInputArrayInformation (int idx) |
| Get the info object for the specified input array to this algorithm.
|
|
void | RemoveAllInputs () |
| Remove all the input data.
|
|
vtkDataObject * | GetOutputDataObject (int port) |
| Get the data object that will contain the algorithm output for the given port.
|
|
vtkDataObject * | GetInputDataObject (int port, int connection) |
| Get the data object that will contain the algorithm input for the given port and given connection.
|
|
virtual void | RemoveInputConnection (int port, vtkAlgorithmOutput *input) |
| Remove a connection from the given input port index.
|
|
virtual void | RemoveInputConnection (int port, int idx) |
| Remove a connection given by index idx.
|
|
virtual void | RemoveAllInputConnections (int port) |
| Removes all input connections.
|
|
virtual void | SetInputDataObject (int port, vtkDataObject *data) |
| Sets the data-object as an input on the given port index.
|
|
virtual void | SetInputDataObject (vtkDataObject *data) |
|
virtual void | AddInputDataObject (int port, vtkDataObject *data) |
| Add the data-object as an input to this given port.
|
|
virtual void | AddInputDataObject (vtkDataObject *data) |
|
vtkAlgorithmOutput * | GetOutputPort (int index) |
| Get a proxy object corresponding to the given output port of this algorithm.
|
|
vtkAlgorithmOutput * | GetOutputPort () |
|
int | GetNumberOfInputConnections (int port) |
| Get the number of inputs currently connected to a port.
|
|
int | GetTotalNumberOfInputConnections () |
| Get the total number of inputs for this algorithm.
|
|
vtkAlgorithmOutput * | GetInputConnection (int port, int index) |
| Get the algorithm output port connected to an input port.
|
|
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.
|
|
vtkAlgorithm * | GetInputAlgorithm (int port, int index) |
| Returns the algorithm connected to a port-index pair.
|
|
vtkAlgorithm * | GetInputAlgorithm () |
| Equivalent to GetInputAlgorithm(0, 0).
|
|
vtkExecutive * | GetInputExecutive (int port, int index) |
| Returns the executive associated with a particular input connection.
|
|
vtkExecutive * | GetInputExecutive () |
| Equivalent to GetInputExecutive(0, 0)
|
|
vtkInformation * | GetInputInformation (int port, int index) |
| Return the information object that is associated with a particular input connection.
|
|
vtkInformation * | GetInputInformation () |
| Equivalent to GetInputInformation(0, 0)
|
|
vtkInformation * | GetOutputInformation (int port) |
| Return the information object that is associated with a particular output port.
|
|
virtual vtkTypeBool | 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).
|
|
virtual vtkTypeBool | Update (vtkInformation *requests) |
| Convenience method to update an algorithm after passing requests to its first output port.
|
|
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.
|
|
virtual int | UpdateExtent (const int extents[6]) |
| Convenience method to update an algorithm after passing requests to its first output port.
|
|
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.
|
|
virtual void | UpdateInformation () |
| Bring the algorithm's information up-to-date.
|
|
virtual void | UpdateDataObject () |
| Create output object(s).
|
|
virtual void | PropagateUpdateExtent () |
| Propagate meta-data upstream.
|
|
virtual void | UpdateWholeExtent () |
| Bring this algorithm's outputs up-to-date.
|
|
void | ConvertTotalInputToPortConnection (int ind, int &port, int &conn) |
| Convenience routine to convert from a linear ordering of input connections to a port/connection pair.
|
|
virtual vtkInformation * | GetInformation () |
| Set/Get the information object associated with this algorithm.
|
|
virtual void | SetInformation (vtkInformation *) |
| Set/Get the information object associated with this algorithm.
|
|
void | Register (vtkObjectBase *o) override |
| Participate in garbage collection.
|
|
void | UnRegister (vtkObjectBase *o) override |
| Participate in garbage collection.
|
|
virtual void | SetAbortExecute (vtkTypeBool) |
| Set/Get the AbortExecute flag for the process object.
|
|
virtual vtkTypeBool | GetAbortExecute () |
| Set/Get the AbortExecute flag for the process object.
|
|
virtual void | AbortExecuteOn () |
| Set/Get the AbortExecute flag for the process object.
|
|
virtual void | AbortExecuteOff () |
| Set/Get the AbortExecute flag for the process object.
|
|
virtual double | GetProgress () |
| Get the execution progress of a process object.
|
|
void | SetProgressShiftScale (double shift, double scale) |
| Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
|
|
virtual double | GetProgressShift () |
| Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
|
|
virtual double | GetProgressScale () |
| Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
|
|
void | SetProgressText (const char *ptext) |
| Set the current text message associated with the progress state.
|
|
virtual char * | GetProgressText () |
| Set the current text message associated with the progress state.
|
|
virtual unsigned long | GetErrorCode () |
| The error code contains a possible error that occurred while reading or writing the file.
|
|
virtual void | SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name) |
| Set the input data arrays that this algorithm will process.
|
|
virtual void | SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType) |
| Set the input data arrays that this algorithm will process.
|
|
virtual void | SetInputArrayToProcess (int idx, vtkInformation *info) |
| Set the input data arrays that this algorithm will process.
|
|
virtual void | SetInputConnection (int port, vtkAlgorithmOutput *input) |
| Set the connection for the given input port index.
|
|
virtual void | SetInputConnection (vtkAlgorithmOutput *input) |
| Set the connection for the given input port index.
|
|
virtual void | AddInputConnection (int port, vtkAlgorithmOutput *input) |
| Add a connection to the given input port index.
|
|
virtual void | AddInputConnection (vtkAlgorithmOutput *input) |
| Add a connection to the given input port index.
|
|
virtual void | Update (int port) |
| Bring this algorithm's outputs up-to-date.
|
|
virtual void | Update () |
| Bring this algorithm's outputs up-to-date.
|
|
virtual void | SetReleaseDataFlag (int) |
| Turn release data flag on or off for all output ports.
|
|
virtual int | GetReleaseDataFlag () |
| Turn release data flag on or off for all output ports.
|
|
void | ReleaseDataFlagOn () |
| Turn release data flag on or off for all output ports.
|
|
void | ReleaseDataFlagOff () |
| Turn release data flag on or off for all output ports.
|
|
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.
|
|
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.
|
|
int * | GetUpdateExtent () |
| These functions return the update extent for output ports that use 3D extents.
|
|
int * | GetUpdateExtent (int port) |
| These functions return the update extent for output ports that use 3D extents.
|
|
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.
|
|
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.
|
|
void | GetUpdateExtent (int extent[6]) |
| These functions return the update extent for output ports that use 3D extents.
|
|
void | GetUpdateExtent (int port, int extent[6]) |
| These functions return the update extent for output ports that use 3D extents.
|
|
int | GetUpdatePiece () |
| These functions return the update extent for output ports that use piece extents.
|
|
int | GetUpdatePiece (int port) |
| These functions return the update extent for output ports that use piece extents.
|
|
int | GetUpdateNumberOfPieces () |
| These functions return the update extent for output ports that use piece extents.
|
|
int | GetUpdateNumberOfPieces (int port) |
| These functions return the update extent for output ports that use piece extents.
|
|
int | GetUpdateGhostLevel () |
| These functions return the update extent for output ports that use piece extents.
|
|
int | GetUpdateGhostLevel (int port) |
| These functions return the update extent for output ports that use piece extents.
|
|
void | SetProgressObserver (vtkProgressObserver *) |
| If an ProgressObserver is set, the algorithm will report progress through it rather than directly.
|
|
virtual vtkProgressObserver * | GetProgressObserver () |
| If an ProgressObserver is set, the algorithm will report progress through it rather than directly.
|
|
| vtkBaseTypeMacro (vtkObject, vtkObjectBase) |
|
virtual void | DebugOn () |
| Turn debugging output on.
|
|
virtual void | DebugOff () |
| Turn debugging output off.
|
|
bool | GetDebug () |
| Get the value of the debug flag.
|
|
void | SetDebug (bool debugFlag) |
| Set the value of the debug flag.
|
|
virtual void | Modified () |
| Update the modification time for this object.
|
|
virtual vtkMTimeType | GetMTime () |
| Return this object's modified time.
|
|
void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
|
|
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.
|
|
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
vtkCommand * | GetCommand (unsigned long tag) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
void | RemoveObserver (vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
void | RemoveObservers (unsigned long event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
void | RemoveObservers (const char *event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
|
|
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.
|
|
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.
|
|
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.
|
|
int | InvokeEvent (unsigned long event, void *callData) |
| This method invokes an event and return whether the event was aborted or not.
|
|
int | InvokeEvent (const char *event, void *callData) |
| This method invokes an event and return whether the event was aborted or not.
|
|
const char * | GetClassName () const |
| Return the class name as a string.
|
|
virtual vtkTypeBool | IsA (const char *name) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
|
|
virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name) |
| Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
|
|
virtual void | Delete () |
| Delete a VTK object.
|
|
virtual void | FastDelete () |
| Delete a reference to this object.
|
|
void | InitializeObjectBase () |
|
void | Print (ostream &os) |
| Print an object to an ostream.
|
|
virtual void | Register (vtkObjectBase *o) |
| Increase the reference count (mark as used by another object).
|
|
virtual void | UnRegister (vtkObjectBase *o) |
| Decrease the reference count (release by another object).
|
|
int | GetReferenceCount () |
| Return the current reference count of this object.
|
|
void | SetReferenceCount (int) |
| Sets the reference count.
|
|
bool | GetIsInMemkind () const |
| A local state flag that remembers whether this object lives in the normal or extended memory space.
|
|
virtual void | PrintHeader (ostream &os, vtkIndent indent) |
| Methods invoked by print to print information about the object including superclasses.
|
|
virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
| Methods invoked by print to print information about the object including superclasses.
|
|
|
| vtkVoronoi2D () |
|
| ~vtkVoronoi2D () override |
|
int | RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override |
| This is called by the superclass.
|
|
int | FillInputPortInformation (int, vtkInformation *) override |
| Fill the input port information objects for this algorithm.
|
|
virtual vtkObjectBase * | NewInstanceInternal () const |
|
| vtkPolyDataAlgorithm () |
|
| ~vtkPolyDataAlgorithm () override |
|
virtual int | RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) |
|
virtual int | RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) |
| This is called by the superclass.
|
|
virtual int | RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
| This is called by the superclass.
|
|
int | FillOutputPortInformation (int port, vtkInformation *info) override |
| Fill the output port information objects for this algorithm.
|
|
int | FillInputPortInformation (int port, vtkInformation *info) override |
| Fill the input port information objects for this algorithm.
|
|
virtual vtkObjectBase * | NewInstanceInternal () const |
|
| vtkAlgorithm () |
|
| ~vtkAlgorithm () override |
|
virtual int | FillInputPortInformation (int port, vtkInformation *info) |
| Fill the input port information objects for this algorithm.
|
|
virtual int | FillOutputPortInformation (int port, vtkInformation *info) |
| Fill the output port information objects for this algorithm.
|
|
virtual void | SetNumberOfInputPorts (int n) |
| Set the number of input ports used by the algorithm.
|
|
virtual void | SetNumberOfOutputPorts (int n) |
| Set the number of output ports provided by the algorithm.
|
|
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.
|
|
vtkInformation * | GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector) |
| This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector.
|
|
virtual vtkExecutive * | CreateDefaultExecutive () |
| Create a default executive.
|
|
void | ReportReferences (vtkGarbageCollector *) override |
|
virtual void | SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input) |
| Replace the Nth connection on the given input port.
|
|
virtual void | SetNumberOfInputConnections (int port, int n) |
| Set the number of input connections on the given input port.
|
|
void | SetInputDataInternal (int port, vtkDataObject *input) |
| These methods are used by subclasses to implement methods to set data objects directly as input.
|
|
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.
|
|
int | GetInputArrayAssociation (int idx, vtkDataObject *input) |
| Filters that have multiple connections on one port can use this signature.
|
|
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.
|
|
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.
|
|
vtkDataArray * | GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector) |
| Filters that have multiple connections on one port can use this signature.
|
|
vtkDataArray * | GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association) |
| Filters that have multiple connections on one port can use this signature.
|
|
vtkDataArray * | GetInputArrayToProcess (int idx, vtkDataObject *input) |
| Filters that have multiple connections on one port can use this signature.
|
|
vtkDataArray * | GetInputArrayToProcess (int idx, vtkDataObject *input, int &association) |
| Filters that have multiple connections on one port can use this signature.
|
|
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.
|
|
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.
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector) |
| Filters that have multiple connections on one port can use this signature.
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association) |
| Filters that have multiple connections on one port can use this signature.
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, vtkDataObject *input) |
| Filters that have multiple connections on one port can use this signature.
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association) |
| Filters that have multiple connections on one port can use this signature.
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virtual void | SetErrorCode (unsigned long) |
| The error code contains a possible error that occurred while reading or writing the file.
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| vtkObject () |
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| ~vtkObject () override |
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void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
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void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
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void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr) |
| These methods allow a command to exclusively grab all events.
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void | InternalReleaseFocus () |
| These methods allow a command to exclusively grab all events.
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| vtkObjectBase () |
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virtual | ~vtkObjectBase () |
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virtual void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) |
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virtual void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) |
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virtual void | ReportReferences (vtkGarbageCollector *) |
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| vtkObjectBase (const vtkObjectBase &) |
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void | operator= (const vtkObjectBase &) |
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create 2D Voronoi convex tiling of input points
vtkVoronoi2D is a filter that constructs a 2D Voronoi tessellation of a list of input points. The points are assumed to lie in a plane. These points may be represented by any dataset of type vtkPointSet and subclasses. The output of the filter is a polygonal dataset. Each output cell is a convex polygon.
The 2D Voronoi tessellation is a tiling of space, where each Voronoi tile represents the region nearest to one of the input points. Voronoi tessellations are important in computational geometry (and many other fields), and are the dual of Delaunay triangulations.
The input to this filter is a list of points specified in 3D, even though the triangulation is 2D. Thus the triangulation is constructed in the x-y plane, and the z coordinate is ignored (although carried through to the output). If you desire to triangulate in a different plane, you can use the vtkTransformFilter to transform the points into and out of the x-y plane or you can specify a transform to vtkVoronoi2D directly. In the latter case, the input points are transformed, the transformed points are triangulated, and the output will use the triangulated topology for the original (non-transformed) points. This avoids transforming the data back as would be required when using the vtkTransformFilter method. Specifying a transform directly also allows any transform to be used: rigid, non-rigid, non-invertible, etc.
This filter is a reference implementation written with simplicity in mind. Additional methods are available for debugging / instructional purposes. This includes producing a single tile under various stages of creation, as well as the Voronoi flower, related to the error metric for point insertion / half-space clipping.
Publications are in preparation to describe the algorithm. A brief summary is as follows. In parallel, each (generating) input point is associated with an initial Voronoi tile, which is simply the bounding box of the point set. A locator is then used to identify nearby points: each neighbor in turn generates a clipping line positioned halfway between the generating point and the neighboring point, and orthogonal to the line connecting them. Clips are readily performed by evaluationg the vertices of the convex Voronoi tile as being on either side (inside,outside) of the clip line. If two intersections of the Voronoi tile are found, the portion of the tile "outside" the clip line is discarded, resulting in a new convex, Voronoi tile. As each clip occurs, the Voronoi "Flower" error metric (the union of error spheres) is compared to the extent of the region containing the neighboring clip points. The clip region (along with the points contained in it) is grown by careful expansion (e.g., outward spiraling iterator over all candidate clip points). When the Voronoi Flower is contained within the clip region, the algorithm terminates and the Voronoi tile is output. Once complete, it is possible to construct the Delaunay triangulation from the Voronoi tessellation. Note that topological and geometric information is used to generate a valid triangulation (e.g., merging points and validating topology).
- Warning
- Coincident input points will result in overlapping tiles. This is because the Voronoi tessellation requires unique input points.
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This is a novel approach which implements an embarrassingly parallel algorithm. At the core of the algorithm a locator is used to determine points close to a specified position. A vtkStaticPointLocator2D is used because it is both threaded (when constructed) and supports thread-safe queries. While other locators could be used in principal, they must support thread-safe operations.
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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
- vtkDelaunay2D vtkTransformFilter vtkStaticPointLocator2D
Definition at line 102 of file vtkVoronoi2D.h.