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virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class. More...
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vtkSmoothPolyDataFilter * | NewInstance () const |
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void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses. More...
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virtual void | SetConvergence (double) |
| Specify a convergence criterion for the iteration process. More...
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virtual double | GetConvergence () |
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virtual void | SetNumberOfIterations (int) |
| Specify the number of iterations for Laplacian smoothing,. More...
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virtual int | GetNumberOfIterations () |
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virtual void | SetRelaxationFactor (double) |
| Specify the relaxation factor for Laplacian smoothing. More...
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virtual double | GetRelaxationFactor () |
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virtual void | SetFeatureEdgeSmoothing (vtkTypeBool) |
| Turn on/off smoothing along sharp interior edges. More...
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virtual vtkTypeBool | GetFeatureEdgeSmoothing () |
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virtual void | FeatureEdgeSmoothingOn () |
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virtual void | FeatureEdgeSmoothingOff () |
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virtual void | SetFeatureAngle (double) |
| Specify the feature angle for sharp edge identification. More...
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virtual double | GetFeatureAngle () |
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virtual void | SetEdgeAngle (double) |
| Specify the edge angle to control smoothing along edges (either interior or boundary). More...
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virtual double | GetEdgeAngle () |
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virtual void | SetBoundarySmoothing (vtkTypeBool) |
| Turn on/off the smoothing of vertices on the boundary of the mesh. More...
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virtual vtkTypeBool | GetBoundarySmoothing () |
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virtual void | BoundarySmoothingOn () |
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virtual void | BoundarySmoothingOff () |
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virtual void | SetGenerateErrorScalars (vtkTypeBool) |
| Turn on/off the generation of scalar distance values. More...
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virtual vtkTypeBool | GetGenerateErrorScalars () |
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virtual void | GenerateErrorScalarsOn () |
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virtual void | GenerateErrorScalarsOff () |
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virtual void | SetGenerateErrorVectors (vtkTypeBool) |
| Turn on/off the generation of error vectors. More...
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virtual vtkTypeBool | GetGenerateErrorVectors () |
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virtual void | GenerateErrorVectorsOn () |
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virtual void | GenerateErrorVectorsOff () |
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void | SetSourceData (vtkPolyData *source) |
| Specify the source object which is used to constrain smoothing. More...
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vtkPolyData * | GetSource () |
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virtual void | SetOutputPointsPrecision (int) |
| Set/get the desired precision for the output types. More...
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virtual int | GetOutputPointsPrecision () |
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vtkPolyDataAlgorithm * | NewInstance () const |
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vtkPolyData * | GetOutput () |
| Get the output data object for a port on this algorithm. More...
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vtkPolyData * | GetOutput (int) |
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virtual void | SetOutput (vtkDataObject *d) |
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int | ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override |
| see vtkAlgorithm for details More...
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vtkDataObject * | GetInput () |
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vtkDataObject * | GetInput (int port) |
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vtkPolyData * | GetPolyDataInput (int port) |
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void | SetInputData (vtkDataObject *) |
| Assign a data object as input. More...
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void | SetInputData (int, vtkDataObject *) |
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void | AddInputData (vtkDataObject *) |
| Assign a data object as input. More...
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void | AddInputData (int, vtkDataObject *) |
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vtkAlgorithm * | NewInstance () const |
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int | HasExecutive () |
| Check whether this algorithm has an assigned executive. More...
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vtkExecutive * | GetExecutive () |
| Get this algorithm's executive. More...
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virtual void | SetExecutive (vtkExecutive *executive) |
| Set this algorithm's executive. More...
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int | ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo) |
| Version of ProcessRequest() that is wrapped. More...
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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...
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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...
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vtkInformation * | GetInputPortInformation (int port) |
| Get the information object associated with an input port. More...
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vtkInformation * | GetOutputPortInformation (int port) |
| Get the information object associated with an output port. More...
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virtual vtkInformation * | GetInformation () |
| Set/Get the information object associated with this algorithm. More...
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virtual void | SetInformation (vtkInformation *) |
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int | GetNumberOfInputPorts () |
| Get the number of input ports used by the algorithm. More...
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int | GetNumberOfOutputPorts () |
| Get the number of output ports provided by the algorithm. More...
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void | Register (vtkObjectBase *o) override |
| Participate in garbage collection. More...
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void | UnRegister (vtkObjectBase *o) override |
| Decrease the reference count (release by another object). More...
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virtual void | SetAbortExecute (vtkTypeBool) |
| Set/Get the AbortExecute flag for the process object. More...
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virtual vtkTypeBool | GetAbortExecute () |
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virtual void | AbortExecuteOn () |
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virtual void | AbortExecuteOff () |
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virtual void | SetProgress (double) |
| Set/Get the execution progress of a process object. More...
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virtual double | GetProgress () |
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void | UpdateProgress (double amount) |
| Update the progress of the process object. More...
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void | SetProgressText (const char *ptext) |
| Set the current text message associated with the progress state. More...
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virtual char * | GetProgressText () |
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virtual unsigned long | GetErrorCode () |
| The error code contains a possible error that occurred while reading or writing the file. More...
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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...
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virtual void | SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType) |
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virtual void | SetInputArrayToProcess (int idx, vtkInformation *info) |
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virtual void | SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName) |
| String based versions of SetInputArrayToProcess(). More...
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vtkInformation * | GetInputArrayInformation (int idx) |
| Get the info object for the specified input array to this algorithm. More...
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void | RemoveAllInputs () |
| Remove all the input data. More...
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vtkDataObject * | GetOutputDataObject (int port) |
| Get the data object that will contain the algorithm output for the given port. More...
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vtkDataObject * | GetInputDataObject (int port, int connection) |
| Get the data object that will contain the algorithm input for the given port and given connection. More...
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virtual void | SetInputConnection (int port, vtkAlgorithmOutput *input) |
| Set the connection for the given input port index. More...
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virtual void | SetInputConnection (vtkAlgorithmOutput *input) |
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virtual void | AddInputConnection (int port, vtkAlgorithmOutput *input) |
| Add a connection to the given input port index. More...
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virtual void | AddInputConnection (vtkAlgorithmOutput *input) |
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virtual void | RemoveInputConnection (int port, vtkAlgorithmOutput *input) |
| Remove a connection from the given input port index. More...
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virtual void | RemoveInputConnection (int port, int idx) |
| Remove a connection given by index idx. More...
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virtual void | RemoveAllInputConnections (int port) |
| Removes all input connections. More...
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virtual void | SetInputDataObject (int port, vtkDataObject *data) |
| Sets the data-object as an input on the given port index. More...
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virtual void | SetInputDataObject (vtkDataObject *data) |
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virtual void | AddInputDataObject (int port, vtkDataObject *data) |
| Add the data-object as an input to this given port. More...
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virtual void | AddInputDataObject (vtkDataObject *data) |
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vtkAlgorithmOutput * | GetOutputPort (int index) |
| Get a proxy object corresponding to the given output port of this algorithm. More...
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vtkAlgorithmOutput * | GetOutputPort () |
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int | GetNumberOfInputConnections (int port) |
| Get the number of inputs currently connected to a port. More...
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int | GetTotalNumberOfInputConnections () |
| Get the total number of inputs for this algorithm. More...
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vtkAlgorithmOutput * | GetInputConnection (int port, int index) |
| Get the algorithm output port connected to an input port. More...
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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...
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vtkAlgorithm * | GetInputAlgorithm (int port, int index) |
| Returns the algorithm connected to a port-index pair. More...
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vtkAlgorithm * | GetInputAlgorithm () |
| Equivalent to GetInputAlgorithm(0, 0). More...
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vtkExecutive * | GetInputExecutive (int port, int index) |
| Returns the executive associated with a particular input connection. More...
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vtkExecutive * | GetInputExecutive () |
| Equivalent to GetInputExecutive(0, 0) More...
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vtkInformation * | GetInputInformation (int port, int index) |
| Return the information object that is associated with a particular input connection. More...
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vtkInformation * | GetInputInformation () |
| Equivalent to GetInputInformation(0, 0) More...
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vtkInformation * | GetOutputInformation (int port) |
| Return the information object that is associated with a particular output port. More...
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virtual void | Update (int port) |
| Bring this algorithm's outputs up-to-date. More...
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virtual void | Update () |
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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...
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virtual int | Update (vtkInformation *requests) |
| Convenience method to update an algorithm after passing requests to its first output port. More...
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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...
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virtual int | UpdateExtent (const int extents[6]) |
| Convenience method to update an algorithm after passing requests to its first output port. More...
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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...
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virtual void | UpdateInformation () |
| Bring the algorithm's information up-to-date. More...
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virtual void | UpdateDataObject () |
| Create output object(s). More...
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virtual void | PropagateUpdateExtent () |
| Propagate meta-data upstream. More...
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virtual void | UpdateWholeExtent () |
| Bring this algorithm's outputs up-to-date. More...
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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...
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virtual void | SetReleaseDataFlag (int) |
| Turn release data flag on or off for all output ports. More...
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virtual int | GetReleaseDataFlag () |
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void | ReleaseDataFlagOn () |
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void | ReleaseDataFlagOff () |
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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...
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int | UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType) |
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int * | GetUpdateExtent () |
| These functions return the update extent for output ports that use 3D extents. More...
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int * | GetUpdateExtent (int port) |
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void | GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1) |
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void | GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1) |
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void | GetUpdateExtent (int extent[6]) |
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void | GetUpdateExtent (int port, int extent[6]) |
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int | GetUpdatePiece () |
| These functions return the update extent for output ports that use piece extents. More...
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int | GetUpdatePiece (int port) |
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int | GetUpdateNumberOfPieces () |
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int | GetUpdateNumberOfPieces (int port) |
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int | GetUpdateGhostLevel () |
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int | GetUpdateGhostLevel (int port) |
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void | SetProgressObserver (vtkProgressObserver *) |
| If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...
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virtual vtkProgressObserver * | GetProgressObserver () |
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| vtkBaseTypeMacro (vtkObject, vtkObjectBase) |
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virtual void | DebugOn () |
| Turn debugging output on. More...
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virtual void | DebugOff () |
| Turn debugging output off. More...
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bool | GetDebug () |
| Get the value of the debug flag. More...
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void | SetDebug (bool debugFlag) |
| Set the value of the debug flag. More...
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virtual void | Modified () |
| Update the modification time for this object. More...
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virtual vtkMTimeType | GetMTime () |
| Return this object's modified time. More...
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unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
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vtkCommand * | GetCommand (unsigned long tag) |
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void | RemoveObserver (vtkCommand *) |
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void | RemoveObservers (unsigned long event, vtkCommand *) |
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void | RemoveObservers (const char *event, vtkCommand *) |
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vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
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vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
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void | RemoveObserver (unsigned long tag) |
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void | RemoveObservers (unsigned long event) |
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void | RemoveObservers (const char *event) |
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void | RemoveAllObservers () |
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vtkTypeBool | HasObserver (unsigned long event) |
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vtkTypeBool | HasObserver (const char *event) |
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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...
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template<class U , class T > |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
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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...
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int | InvokeEvent (unsigned long event, void *callData) |
| This method invokes an event and return whether the event was aborted or not. More...
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int | InvokeEvent (const char *event, void *callData) |
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int | InvokeEvent (unsigned long event) |
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int | InvokeEvent (const char *event) |
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const char * | GetClassName () const |
| Return the class name as a string. More...
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virtual void | Delete () |
| Delete a VTK object. More...
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virtual void | FastDelete () |
| Delete a reference to this object. More...
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void | InitializeObjectBase () |
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void | Print (ostream &os) |
| Print an object to an ostream. More...
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virtual void | PrintHeader (ostream &os, vtkIndent indent) |
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virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
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int | GetReferenceCount () |
| Return the current reference count of this object. More...
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void | SetReferenceCount (int) |
| Sets the reference count. More...
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void | PrintRevisions (ostream &) |
| Legacy. More...
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virtual vtkObjectBase * | NewInstanceInternal () const |
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| vtkSmoothPolyDataFilter () |
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| ~vtkSmoothPolyDataFilter () override |
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int | RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override |
| This is called by the superclass. More...
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int | FillInputPortInformation (int port, vtkInformation *info) override |
| Fill the input port information objects for this algorithm. More...
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| vtkPolyDataAlgorithm () |
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| ~vtkPolyDataAlgorithm () override |
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virtual int | RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) |
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virtual int | RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
| This is called by the superclass. More...
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int | FillOutputPortInformation (int port, vtkInformation *info) override |
| Fill the output port information objects for this algorithm. More...
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| vtkAlgorithm () |
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| ~vtkAlgorithm () override |
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virtual void | SetNumberOfInputPorts (int n) |
| Set the number of input ports used by the algorithm. More...
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virtual void | SetNumberOfOutputPorts (int n) |
| Set the number of output ports provided by the algorithm. More...
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int | InputPortIndexInRange (int index, const char *action) |
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int | OutputPortIndexInRange (int index, const char *action) |
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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...
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int | GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector) |
| Filters that have multiple connections on one port can use this signature. More...
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int | GetInputArrayAssociation (int idx, vtkDataObject *input) |
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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...
|
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vtkDataArray * | GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association) |
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vtkDataArray * | GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector) |
| Filters that have multiple connections on one port can use this signature. More...
|
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vtkDataArray * | GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association) |
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vtkDataArray * | GetInputArrayToProcess (int idx, vtkDataObject *input) |
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vtkDataArray * | GetInputArrayToProcess (int idx, vtkDataObject *input, int &association) |
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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...
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association) |
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector) |
| Filters that have multiple connections on one port can use this signature. More...
|
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association) |
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, vtkDataObject *input) |
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vtkAbstractArray * | GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association) |
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vtkInformation * | GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector) |
| This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector. More...
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virtual vtkExecutive * | CreateDefaultExecutive () |
| Create a default executive. More...
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virtual void | SetErrorCode (unsigned long) |
| The error code contains a possible error that occurred while reading or writing the file. More...
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void | ReportReferences (vtkGarbageCollector *) override |
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virtual void | SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input) |
| Replace the Nth connection on the given input port. More...
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virtual void | SetNumberOfInputConnections (int port, int n) |
| Set the number of input connections on the given input port. More...
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void | SetInputDataInternal (int port, vtkDataObject *input) |
| These methods are used by subclasses to implement methods to set data objects directly as input. More...
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void | AddInputDataInternal (int port, vtkDataObject *input) |
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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. More...
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void | InternalReleaseFocus () |
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| vtkObjectBase () |
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virtual | ~vtkObjectBase () |
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virtual void | CollectRevisions (ostream &) |
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| vtkObjectBase (const vtkObjectBase &) |
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void | operator= (const vtkObjectBase &) |
|
adjust point positions using Laplacian smoothing
vtkSmoothPolyDataFilter is a filter that adjusts point coordinates using Laplacian smoothing. The effect is to "relax" the mesh, making the cells better shaped and the vertices more evenly distributed. Note that this filter operates on the lines, polygons, and triangle strips composing an instance of vtkPolyData. Vertex or poly-vertex cells are never modified.
The algorithm proceeds as follows. For each vertex v, a topological and geometric analysis is performed to determine which vertices are connected to v, and which cells are connected to v. Then, a connectivity array is constructed for each vertex. (The connectivity array is a list of lists of vertices that directly attach to each vertex.) Next, an iteration phase begins over all vertices. For each vertex v, the coordinates of v are modified according to an average of the connected vertices. (A relaxation factor is available to control the amount of displacement of v). The process repeats for each vertex. This pass over the list of vertices is a single iteration. Many iterations (generally around 20 or so) are repeated until the desired result is obtained.
There are some special instance variables used to control the execution of this filter. (These ivars basically control what vertices can be smoothed, and the creation of the connectivity array.) The BoundarySmoothing ivar enables/disables the smoothing operation on vertices that are on the "boundary" of the mesh. A boundary vertex is one that is surrounded by a semi-cycle of polygons (or used by a single line).
Another important ivar is FeatureEdgeSmoothing. If this ivar is enabled, then interior vertices are classified as either "simple", "interior edge", or "fixed", and smoothed differently. (Interior vertices are manifold vertices surrounded by a cycle of polygons; or used by two line cells.) The classification is based on the number of feature edges attached to v. A feature edge occurs when the angle between the two surface normals of a polygon sharing an edge is greater than the FeatureAngle ivar. Then, vertices used by no feature edges are classified "simple", vertices used by exactly two feature edges are classified "interior edge", and all others are "fixed" vertices.
Once the classification is known, the vertices are smoothed differently. Corner (i.e., fixed) vertices are not smoothed at all. Simple vertices are smoothed as before (i.e., average of connected vertex coordinates). Interior edge vertices are smoothed only along their two connected edges, and only if the angle between the edges is less than the EdgeAngle ivar.
The total smoothing can be controlled by using two ivars. The NumberOfIterations is a cap on the maximum number of smoothing passes. The Convergence ivar is a limit on the maximum point motion. If the maximum motion during an iteration is less than Convergence, then the smoothing process terminates. (Convergence is expressed as a fraction of the diagonal of the bounding box.)
There are two instance variables that control the generation of error data. If the ivar GenerateErrorScalars is on, then a scalar value indicating the distance of each vertex from its original position is computed. If the ivar GenerateErrorVectors is on, then a vector representing change in position is computed.
Optionally you can further control the smoothing process by defining a second input: the Source. If defined, the input mesh is constrained to lie on the surface defined by the Source ivar.
- Warning
- The Laplacian operation reduces high frequency information in the geometry of the mesh. With excessive smoothing important details may be lost, and the surface may shrink towards the centroid. Enabling FeatureEdgeSmoothing helps reduce this effect, but cannot entirely eliminate it. You may also wish to try vtkWindowedSincPolyDataFilter. It does a better job of minimizing shrinkage.
- See also
- vtkWindowedSincPolyDataFilter vtkDecimate vtkDecimatePro
- Examples:
- vtkSmoothPolyDataFilter (Examples)
- Tests:
- vtkSmoothPolyDataFilter (Tests)
Definition at line 107 of file vtkSmoothPolyDataFilter.h.