VTK: vtkGreedyTerrainDecimation Class Reference

| VTK 9.3.1

Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
vtkGreedyTerrainDecimation Class Reference

reduce height field (represented as image) to reduced TIN More...

`#include <vtkGreedyTerrainDecimation.h>`

Inheritance diagram for vtkGreedyTerrainDecimation:
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Collaboration diagram for vtkGreedyTerrainDecimation:
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## 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...
vtkGreedyTerrainDecimation * | NewInstance () const
void | PrintSelf (ostream &os, vtkIndent indent) override
| Methods invoked by print to print information about the object including superclasses. More...
virtual void | SetErrorMeasure (int)
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
virtual int | GetErrorMeasure ()
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
void | SetErrorMeasureToNumberOfTriangles ()
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
void | SetErrorMeasureToSpecifiedReduction ()
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
void | SetErrorMeasureToAbsoluteError ()
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
void | SetErrorMeasureToRelativeError ()
| Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image). More...
virtual void | SetNumberOfTriangles (vtkIdType)
| Specify the number of triangles to produce on output. More...
virtual vtkIdType | GetNumberOfTriangles ()
| Specify the number of triangles to produce on output. More...
virtual void | SetReduction (double)
| Specify the reduction of the mesh (represented as a fraction). More...
virtual double | GetReduction ()
| Specify the reduction of the mesh (represented as a fraction). More...
virtual void | SetAbsoluteError (double)
| Specify the absolute error of the mesh; that is, the error in height between the decimated mesh and the original height field. More...
virtual double | GetAbsoluteError ()
| Specify the absolute error of the mesh; that is, the error in height between the decimated mesh and the original height field. More...
virtual void | SetRelativeError (double)
| Specify the relative error of the mesh; that is, the error in height between the decimated mesh and the original height field normalized by the diagonal of the image. More...
virtual double | GetRelativeError ()
| Specify the relative error of the mesh; that is, the error in height between the decimated mesh and the original height field normalized by the diagonal of the image. More...
virtual void | SetBoundaryVertexDeletion (vtkTypeBool)
| Turn on/off the deletion of vertices on the boundary of a mesh. More...
virtual vtkTypeBool | GetBoundaryVertexDeletion ()
| Turn on/off the deletion of vertices on the boundary of a mesh. More...
virtual void | BoundaryVertexDeletionOn ()
| Turn on/off the deletion of vertices on the boundary of a mesh. More...
virtual void | BoundaryVertexDeletionOff ()
| Turn on/off the deletion of vertices on the boundary of a mesh. More...
virtual void | SetComputeNormals (vtkTypeBool)
| Compute normals based on the input image. More...
virtual vtkTypeBool | GetComputeNormals ()
| Compute normals based on the input image. More...
virtual void | ComputeNormalsOn ()
| Compute normals based on the input image. More...
virtual void | ComputeNormalsOff ()
| Compute normals based on the input image. More...
Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithm * | NewInstance () const
vtkTypeBool | 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
vtkTypeBool | 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...
vtkTypeBool | 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 | SetAbortExecuteAndUpdateTime ()
| Set AbortExecute Flag and update LastAbortTime. More...
void | UpdateProgress (double amount)
| Update the progress of the process object. More...
bool | CheckAbort ()
| Checks to see if this filter should abort. 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 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). More...
virtual vtkTypeBool | 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...
bool | UsesGarbageCollector () const 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 double | GetProgress ()
| Get the execution progress of a process object. More...
void | SetContainerAlgorithm (vtkAlgorithm *containerAlg)
| Set/get a Container algorithm for this algorithm. More...
vtkAlgorithm * | GetContainerAlgorithm ()
| Set/get a Container algorithm for this algorithm. More...
virtual void | SetAbortOutput (bool)
| Set/Get an internal variable used to communicate between the algorithm and executive. More...
virtual bool | GetAbortOutput ()
| Set/Get an internal variable used to communicate between the algorithm and executive. More...
void | SetProgressShiftScale (double shift, double scale)
| Specify the shift and scale values to use to apply to the progress amount when `UpdateProgress` is called. More...
virtual double | GetProgressShift ()
| Specify the shift and scale values to use to apply to the progress amount when `UpdateProgress` is called. More...
virtual double | GetProgressScale ()
| Specify the shift and scale values to use to apply to the progress amount when `UpdateProgress` is called. 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 (vtkTypeBool)
| Turn release data flag on or off for all output ports. More...
virtual vtkTypeBool | 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...
virtual vtkMTimeType | GetMTime ()
| Return this object's modified time. 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)
vtkTypeBool | InvokeEvent (unsigned long event)
vtkTypeBool | InvokeEvent (const char *event)
std::string | GetObjectDescription () const override
| The object description printed in messages and PrintSelf output. More...
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...
vtkTypeBool | InvokeEvent (unsigned long event, void *callData)
| This method invokes an event and return whether the event was aborted or not. More...
vtkTypeBool | InvokeEvent (const char *event, void *callData)
| This method invokes an event and return whether the event was aborted or not. More...
virtual void | SetObjectName (const std::string &objectName)
| Set/get the name of this object for reporting purposes. More...
virtual std::string | GetObjectName () const
| Set/get the name of this object for reporting purposes. More...
Public Member Functions inherited from vtkObjectBase
const char * | GetClassName () const
| Return the class name as a string. More...
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). 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...
virtual void | Register (vtkObjectBase *o)
| Increase the reference count (mark as used by another object). More...
virtual void | UnRegister (vtkObjectBase *o)
| Decrease the reference count (release by another object). More...
int | GetReferenceCount ()
| Return the current reference count of this object. More...
void | SetReferenceCount (int)
| Sets the reference count. More...
bool | GetIsInMemkind () const
| A local state flag that remembers whether this object lives in the normal or extended memory space. 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 vtkTypeBool | IsTypeOf (const char *type)
static vtkGreedyTerrainDecimation * | SafeDownCast (vtkObjectBase *o)
static vtkGreedyTerrainDecimation * | New ()
| Instantiate the class. More...
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 vtkInformationIntegerKey * | ABORTED ()
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 (vtkTypeBool 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 vtkTypeBool | 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 vtkIdType | GetNumberOfGenerationsFromBaseType (const char *name)
| Given a 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). More...
static vtkObjectBase * | New ()
| Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
static void | SetMemkindDirectory (const char *directoryname)
| The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...
static bool | GetUsingMemkind ()
| A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. More...

## Protected Member Functions
virtual vtkObjectBase * | NewInstanceInternal () const
| vtkGreedyTerrainDecimation ()
| ~vtkGreedyTerrainDecimation () 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...
void | ComputePointNormal (int i, int j, float n[3])
void | EstimateOutputSize (vtkIdType numInputPts, vtkIdType &numPts, vtkIdType &numTris)
virtual int | SatisfiesErrorMeasure (double error)
void | InsertBoundaryVertices ()
vtkIdType | AddPointToTriangulation (vtkIdType inputPtId)
vtkIdType | InsertNextPoint (vtkIdType inputPtId, double x[3])
double * | GetPoint (vtkIdType id)
void | GetPoint (vtkIdType id, double x[3])
void | GetTerrainPoint (int i, int j, double x[3])
void | ComputeImageCoordinates (vtkIdType inputPtId, int ij[2])
int | InCircle (double x[3], double x1[3], double x2[3], double x3[3])
vtkIdType | FindTriangle (double x[3], vtkIdType ptIds[3], vtkIdType tri, double tol, vtkIdType nei[3], vtkIdList *neighbors, int &status)
void | CheckEdge (vtkIdType ptId, double x[3], vtkIdType p1, vtkIdType p2, vtkIdType tri, int depth)
void | UpdateTriangles (vtkIdType meshPtId)
void | UpdateTriangle (vtkIdType triId, vtkIdType p1, vtkIdType p2, vtkIdType p3)
void | UpdateTriangle (vtkIdType triId, int ij1[2], int ij2[2], int ij3[2], double h[3])
int | CharacterizeTriangle (int ij1[2], int ij2[2], int ij[3], int *&min, int *&max, int *&midL, int *&midR, int *&mid, int mid2[2], double h[3], double &hMin, double &hMax, double &hL, double &hR)
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
bool | CheckUpstreamAbort ()
| Checks to see if an upstream filter has been aborted. More...
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 association 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 ()
| vtkObjectBase (const vtkObjectBase &)
void | operator= (const vtkObjectBase &)

## Protected Attributes
vtkTypeBool | ComputeNormals
vtkFloatArray * | Normals
int | ErrorMeasure
vtkIdType | NumberOfTriangles
double | Reduction
double | AbsoluteError
double | RelativeError
vtkTypeBool | BoundaryVertexDeletion
vtkPolyData * | Mesh
vtkPointData * | InputPD
vtkPointData * | OutputPD
vtkDoubleArray * | Points
vtkDataArray * | Heights
vtkIdType | CurrentPointId
double | Tolerance
vtkIdList * | Neighbors
int | Dimensions [3]
double | Origin [3]
double | Spacing [3]
vtkIdType | MaximumNumberOfTriangles
double | Length
vtkPriorityQueue * | TerrainError
vtkGreedyTerrainDecimationTerrainInfoType * | TerrainInfo
vtkGreedyTerrainDecimationPointInfoType * | PointInfo
Protected Attributes inherited from vtkAlgorithm
vtkTimeStamp | LastAbortCheckTime
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
std::string | ObjectName
Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t > | ReferenceCount
vtkWeakPointerBase ** | WeakPointers

## Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
std::atomic< vtkTypeBool > | AbortExecute
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey * | PORT_REQUIREMENTS_FILLED ()
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction | GetCurrentMallocFunction ()
static vtkReallocingFunction | GetCurrentReallocFunction ()
static vtkFreeingFunction | GetCurrentFreeFunction ()
static vtkFreeingFunction | GetAlternateFreeFunction ()
Static Protected Attributes inherited from vtkAlgorithm
static vtkTimeStamp | LastAbortTime
static vtkExecutive * | DefaultExecutivePrototype

## Detailed Description

reduce height field (represented as image) to reduced TIN

vtkGreedyTerrainDecimation approximates a height field with a triangle mesh (triangulated irregular network - TIN) using a greedy insertion algorithm similar to that described by Garland and Heckbert in their paper "Fast Polygonal Approximations of Terrain and Height Fields" (Technical Report CMU-CS-95-181). The input to the filter is a height field (represented by a image whose scalar values are height) and the output of the filter is polygonal data consisting of triangles. The number of triangles in the output is reduced in number as compared to a naive tessellation of the input height field. This filter copies point data from the input to the output for those points present in the output.

An brief description of the algorithm is as follows. The algorithm uses a top-down decimation approach that initially represents the height field with two triangles (whose vertices are at the four corners of the image). These two triangles form a Delaunay triangulation. In an iterative fashion, the point in the image with the greatest error (as compared to the original height field) is injected into the triangulation. (Note that the single point with the greatest error per triangle is identified and placed into a priority queue. As the triangulation is modified, the errors from the deleted triangles are removed from the queue, error values from the new triangles are added.) The point whose error is at the top of the queue is added to the triangulaion modifying it using the standard incremental Delaunay point insertion (see vtkDelaunay2D) algorithm. Points are repeatedly inserted until the appropriate (user-specified) error criterion is met.

To use this filter, set the input and specify the error measure to be used. The error measure options are 1) the absolute number of triangles to be produced; 2) a fractional reduction of the mesh (numTris/maxTris) where maxTris is the largest possible number of triangles 2*(dims[0]-1)*(dims[1]-1); 3) an absolute measure on error (maximum difference in height field to reduced TIN); and 4) relative error (the absolute error is normalized by the diagonal of the bounding box of the height field).

Warning
  This algorithm requires the entire input dataset to be in memory, hence it may not work for extremely large images. Invoking BoundaryVertexDeletionOff will allow you to stitch together images with matching boundaries.
  The input height image is assumed to be positioned in the x-y plane so the scalar value is the z-coordinate, height value.

See also
  vtkDecimatePro vtkQuadricDecimation vtkQuadricClustering

Online Examples:

Tests:
  vtkGreedyTerrainDecimation (Tests)

Definition at line 90 of file vtkGreedyTerrainDecimation.h.

## Member Typedef Documentation

## ◆ Superclass

typedef vtkPolyDataAlgorithm vtkGreedyTerrainDecimation::Superclass

Definition at line 93 of file vtkGreedyTerrainDecimation.h.

## Constructor & Destructor Documentation

## ◆ vtkGreedyTerrainDecimation()

vtkGreedyTerrainDecimation::vtkGreedyTerrainDecimation | ( |  | ) |
| protected

## ◆ ~vtkGreedyTerrainDecimation()

vtkGreedyTerrainDecimation::~vtkGreedyTerrainDecimation | ( |  | ) |
| overrideprotected

## Member Function Documentation

## ◆ IsTypeOf()

static vtkTypeBool vtkGreedyTerrainDecimation::IsTypeOf | ( | const char * | type | ) |
| static

## ◆ IsA()

virtual vtkTypeBool vtkGreedyTerrainDecimation::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.

## ◆ SafeDownCast()

static vtkGreedyTerrainDecimation* vtkGreedyTerrainDecimation::SafeDownCast | ( | vtkObjectBase * | o | ) |
| static

## ◆ NewInstanceInternal()

virtual vtkObjectBase* vtkGreedyTerrainDecimation::NewInstanceInternal | ( |  | ) | const
| protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

## ◆ NewInstance()

vtkGreedyTerrainDecimation* vtkGreedyTerrainDecimation::NewInstance | ( |  | ) | const

## ◆ PrintSelf()

void vtkGreedyTerrainDecimation::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.

## ◆ New()

static vtkGreedyTerrainDecimation* vtkGreedyTerrainDecimation::New | ( |  | ) |
| static

Instantiate the class.

## ◆ SetErrorMeasure()

virtual void vtkGreedyTerrainDecimation::SetErrorMeasure | ( | int |  | ) |
| virtual

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

## ◆ GetErrorMeasure()

virtual int vtkGreedyTerrainDecimation::GetErrorMeasure | ( |  | ) |
| virtual

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

## ◆ SetErrorMeasureToNumberOfTriangles()

void vtkGreedyTerrainDecimation::SetErrorMeasureToNumberOfTriangles | ( |  | ) |
| inline

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

Definition at line 110 of file vtkGreedyTerrainDecimation.h.

## ◆ SetErrorMeasureToSpecifiedReduction()

void vtkGreedyTerrainDecimation::SetErrorMeasureToSpecifiedReduction | ( |  | ) |
| inline

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

Definition at line 114 of file vtkGreedyTerrainDecimation.h.

## ◆ SetErrorMeasureToAbsoluteError()

void vtkGreedyTerrainDecimation::SetErrorMeasureToAbsoluteError | ( |  | ) |
| inline

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

Definition at line 118 of file vtkGreedyTerrainDecimation.h.

## ◆ SetErrorMeasureToRelativeError()

void vtkGreedyTerrainDecimation::SetErrorMeasureToRelativeError | ( |  | ) |
| inline

Specify how to terminate the algorithm: either as an absolute number of triangles, a relative number of triangles (normalized by the full resolution mesh), an absolute error (in the height field), or relative error (normalized by the length of the diagonal of the image).

Definition at line 119 of file vtkGreedyTerrainDecimation.h.

## ◆ SetNumberOfTriangles()

virtual void vtkGreedyTerrainDecimation::SetNumberOfTriangles | ( | vtkIdType |  | ) |
| virtual

Specify the number of triangles to produce on output.

(It is a good idea to make sure this is less than a tessellated mesh at full resolution.) You need to set this value only when the error measure is set to NumberOfTriangles.

## ◆ GetNumberOfTriangles()

virtual vtkIdType vtkGreedyTerrainDecimation::GetNumberOfTriangles | ( |  | ) |
| virtual

Specify the number of triangles to produce on output.

(It is a good idea to make sure this is less than a tessellated mesh at full resolution.) You need to set this value only when the error measure is set to NumberOfTriangles.

## ◆ SetReduction()

virtual void vtkGreedyTerrainDecimation::SetReduction | ( | double |  | ) |
| virtual

Specify the reduction of the mesh (represented as a fraction).

Note that a value of 0.10 means a 10% reduction. You need to set this value only when the error measure is set to SpecifiedReduction.

## ◆ GetReduction()

virtual double vtkGreedyTerrainDecimation::GetReduction | ( |  | ) |
| virtual

Specify the reduction of the mesh (represented as a fraction).

Note that a value of 0.10 means a 10% reduction. You need to set this value only when the error measure is set to SpecifiedReduction.

## ◆ SetAbsoluteError()

virtual void vtkGreedyTerrainDecimation::SetAbsoluteError | ( | double |  | ) |
| virtual

Specify the absolute error of the mesh; that is, the error in height between the decimated mesh and the original height field.

You need to set this value only when the error measure is set to AbsoluteError.

## ◆ GetAbsoluteError()

virtual double vtkGreedyTerrainDecimation::GetAbsoluteError | ( |  | ) |
| virtual

Specify the absolute error of the mesh; that is, the error in height between the decimated mesh and the original height field.

You need to set this value only when the error measure is set to AbsoluteError.

## ◆ SetRelativeError()

virtual void vtkGreedyTerrainDecimation::SetRelativeError | ( | double |  | ) |
| virtual

Specify the relative error of the mesh; that is, the error in height between the decimated mesh and the original height field normalized by the diagonal of the image.

You need to set this value only when the error measure is set to RelativeError.

## ◆ GetRelativeError()

virtual double vtkGreedyTerrainDecimation::GetRelativeError | ( |  | ) |
| virtual

Specify the relative error of the mesh; that is, the error in height between the decimated mesh and the original height field normalized by the diagonal of the image.

You need to set this value only when the error measure is set to RelativeError.

## ◆ SetBoundaryVertexDeletion()

virtual void vtkGreedyTerrainDecimation::SetBoundaryVertexDeletion | ( | vtkTypeBool |  | ) |
| virtual

Turn on/off the deletion of vertices on the boundary of a mesh.

This may limit the maximum reduction that may be achieved.

## ◆ GetBoundaryVertexDeletion()

virtual vtkTypeBool vtkGreedyTerrainDecimation::GetBoundaryVertexDeletion | ( |  | ) |
| virtual

Turn on/off the deletion of vertices on the boundary of a mesh.

This may limit the maximum reduction that may be achieved.

## ◆ BoundaryVertexDeletionOn()

virtual void vtkGreedyTerrainDecimation::BoundaryVertexDeletionOn | ( |  | ) |
| virtual

Turn on/off the deletion of vertices on the boundary of a mesh.

This may limit the maximum reduction that may be achieved.

## ◆ BoundaryVertexDeletionOff()

virtual void vtkGreedyTerrainDecimation::BoundaryVertexDeletionOff | ( |  | ) |
| virtual

Turn on/off the deletion of vertices on the boundary of a mesh.

This may limit the maximum reduction that may be achieved.

## ◆ SetComputeNormals()

virtual void vtkGreedyTerrainDecimation::SetComputeNormals | ( | vtkTypeBool |  | ) |
| virtual

Compute normals based on the input image.

Off by default.

## ◆ GetComputeNormals()

virtual vtkTypeBool vtkGreedyTerrainDecimation::GetComputeNormals | ( |  | ) |
| virtual

Compute normals based on the input image.

Off by default.

## ◆ ComputeNormalsOn()

virtual void vtkGreedyTerrainDecimation::ComputeNormalsOn | ( |  | ) |
| virtual

Compute normals based on the input image.

Off by default.

## ◆ ComputeNormalsOff()

virtual void vtkGreedyTerrainDecimation::ComputeNormalsOff | ( |  | ) |
| virtual

Compute normals based on the input image.

Off by default.

## ◆ RequestData()

int vtkGreedyTerrainDecimation::RequestData | ( | vtkInformation * | request,
|  | vtkInformationVector ** | inputVector,
|  | vtkInformationVector * | outputVector
| ) |  |
| overrideprotectedvirtual

This is called by the superclass.

This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

## ◆ FillInputPortInformation()

int vtkGreedyTerrainDecimation::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.

## ◆ ComputePointNormal()

void vtkGreedyTerrainDecimation::ComputePointNormal | ( | int | i,
|  | int | j,
|  | float | n[3]
| ) |  |
| protected

## ◆ EstimateOutputSize()

void vtkGreedyTerrainDecimation::EstimateOutputSize | ( | vtkIdType | numInputPts,
|  | vtkIdType & | numPts,
|  | vtkIdType & | numTris
| ) |  |
| protected

## ◆ SatisfiesErrorMeasure()

virtual int vtkGreedyTerrainDecimation::SatisfiesErrorMeasure | ( | double | error | ) |
| protectedvirtual

## ◆ InsertBoundaryVertices()

void vtkGreedyTerrainDecimation::InsertBoundaryVertices | ( |  | ) |
| protected

## ◆ AddPointToTriangulation()

vtkIdType vtkGreedyTerrainDecimation::AddPointToTriangulation | ( | vtkIdType | inputPtId | ) |
| protected

## ◆ InsertNextPoint()

vtkIdType vtkGreedyTerrainDecimation::InsertNextPoint | ( | vtkIdType | inputPtId,
|  | double | x[3]
| ) |  |
| protected

## ◆ GetPoint() [1/2]

double* vtkGreedyTerrainDecimation::GetPoint | ( | vtkIdType | id | ) |
| protected

## ◆ GetPoint() [2/2]

void vtkGreedyTerrainDecimation::GetPoint | ( | vtkIdType | id,
|  | double | x[3]
| ) |  |
| protected

## ◆ GetTerrainPoint()

void vtkGreedyTerrainDecimation::GetTerrainPoint | ( | int | i,
|  | int | j,
|  | double | x[3]
| ) |  |
| protected

## ◆ ComputeImageCoordinates()

void vtkGreedyTerrainDecimation::ComputeImageCoordinates | ( | vtkIdType | inputPtId,
|  | int | ij[2]
| ) |  |
| protected

## ◆ InCircle()

int vtkGreedyTerrainDecimation::InCircle | ( | double | x[3],
|  | double | x1[3],
|  | double | x2[3],
|  | double | x3[3]
| ) |  |
| protected

## ◆ FindTriangle()

vtkIdType vtkGreedyTerrainDecimation::FindTriangle | ( | double | x[3],
|  | vtkIdType | ptIds[3],
|  | vtkIdType | tri,
|  | double | tol,
|  | vtkIdType | nei[3],
|  | vtkIdList * | neighbors,
|  | int & | status
| ) |  |
| protected

## ◆ CheckEdge()

void vtkGreedyTerrainDecimation::CheckEdge | ( | vtkIdType | ptId,
|  | double | x[3],
|  | vtkIdType | p1,
|  | vtkIdType | p2,
|  | vtkIdType | tri,
|  | int | depth
| ) |  |
| protected

## ◆ UpdateTriangles()

void vtkGreedyTerrainDecimation::UpdateTriangles | ( | vtkIdType | meshPtId | ) |
| protected

## ◆ UpdateTriangle() [1/2]

void vtkGreedyTerrainDecimation::UpdateTriangle | ( | vtkIdType | triId,
|  | vtkIdType | p1,
|  | vtkIdType | p2,
|  | vtkIdType | p3
| ) |  |
| protected

## ◆ UpdateTriangle() [2/2]

void vtkGreedyTerrainDecimation::UpdateTriangle | ( | vtkIdType | triId,
|  | int | ij1[2],
|  | int | ij2[2],
|  | int | ij3[2],
|  | double | h[3]
| ) |  |
| protected

## ◆ CharacterizeTriangle()

int vtkGreedyTerrainDecimation::CharacterizeTriangle | ( | int | ij1[2],
|  | int | ij2[2],
|  | int | ij[3],
|  | int *& | min,
|  | int *& | max,
|  | int *& | midL,
|  | int *& | midR,
|  | int *& | mid,
|  | int | mid2[2],
|  | double | h[3],
|  | double & | hMin,
|  | double & | hMax,
|  | double & | hL,
|  | double & | hR
| ) |  |
| protected

## Member Data Documentation

## ◆ ComputeNormals

vtkTypeBool vtkGreedyTerrainDecimation::ComputeNormals
| protected

Definition at line 190 of file vtkGreedyTerrainDecimation.h.

## ◆ Normals

vtkFloatArray* vtkGreedyTerrainDecimation::Normals
| protected

Definition at line 191 of file vtkGreedyTerrainDecimation.h.

## ◆ ErrorMeasure

int vtkGreedyTerrainDecimation::ErrorMeasure
| protected

Definition at line 195 of file vtkGreedyTerrainDecimation.h.

## ◆ NumberOfTriangles

vtkIdType vtkGreedyTerrainDecimation::NumberOfTriangles
| protected

Definition at line 196 of file vtkGreedyTerrainDecimation.h.

## ◆ Reduction

double vtkGreedyTerrainDecimation::Reduction
| protected

Definition at line 197 of file vtkGreedyTerrainDecimation.h.

## ◆ AbsoluteError

double vtkGreedyTerrainDecimation::AbsoluteError
| protected

Definition at line 198 of file vtkGreedyTerrainDecimation.h.

## ◆ RelativeError

double vtkGreedyTerrainDecimation::RelativeError
| protected

Definition at line 199 of file vtkGreedyTerrainDecimation.h.

## ◆ BoundaryVertexDeletion

vtkTypeBool vtkGreedyTerrainDecimation::BoundaryVertexDeletion
| protected

Definition at line 200 of file vtkGreedyTerrainDecimation.h.

## ◆ Mesh

vtkPolyData* vtkGreedyTerrainDecimation::Mesh
| protected

Definition at line 203 of file vtkGreedyTerrainDecimation.h.

## ◆ InputPD

vtkPointData* vtkGreedyTerrainDecimation::InputPD
| protected

Definition at line 204 of file vtkGreedyTerrainDecimation.h.

## ◆ OutputPD

vtkPointData* vtkGreedyTerrainDecimation::OutputPD
| protected

Definition at line 205 of file vtkGreedyTerrainDecimation.h.

## ◆ Points

vtkDoubleArray* vtkGreedyTerrainDecimation::Points
| protected

Definition at line 206 of file vtkGreedyTerrainDecimation.h.

## ◆ Heights

vtkDataArray* vtkGreedyTerrainDecimation::Heights
| protected

Definition at line 207 of file vtkGreedyTerrainDecimation.h.

## ◆ CurrentPointId

vtkIdType vtkGreedyTerrainDecimation::CurrentPointId
| protected

Definition at line 208 of file vtkGreedyTerrainDecimation.h.

## ◆ Tolerance

double vtkGreedyTerrainDecimation::Tolerance
| protected

Definition at line 209 of file vtkGreedyTerrainDecimation.h.

## ◆ Neighbors

vtkIdList* vtkGreedyTerrainDecimation::Neighbors
| protected

Definition at line 210 of file vtkGreedyTerrainDecimation.h.

## ◆ Dimensions

int vtkGreedyTerrainDecimation::Dimensions[3]
| protected

Definition at line 211 of file vtkGreedyTerrainDecimation.h.

## ◆ Origin

double vtkGreedyTerrainDecimation::Origin[3]
| protected

Definition at line 212 of file vtkGreedyTerrainDecimation.h.

## ◆ Spacing

double vtkGreedyTerrainDecimation::Spacing[3]
| protected

Definition at line 213 of file vtkGreedyTerrainDecimation.h.

## ◆ MaximumNumberOfTriangles

vtkIdType vtkGreedyTerrainDecimation::MaximumNumberOfTriangles
| protected

Definition at line 214 of file vtkGreedyTerrainDecimation.h.

## ◆ Length

double vtkGreedyTerrainDecimation::Length
| protected

Definition at line 215 of file vtkGreedyTerrainDecimation.h.

## ◆ TerrainError

vtkPriorityQueue* vtkGreedyTerrainDecimation::TerrainError
| protected

Definition at line 218 of file vtkGreedyTerrainDecimation.h.

## ◆ TerrainInfo

vtkGreedyTerrainDecimationTerrainInfoType* vtkGreedyTerrainDecimation::TerrainInfo
| protected

Definition at line 219 of file vtkGreedyTerrainDecimation.h.

## ◆ PointInfo

vtkGreedyTerrainDecimationPointInfoType* vtkGreedyTerrainDecimation::PointInfo
| protected

Definition at line 220 of file vtkGreedyTerrainDecimation.h.

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

- Filters/Hybrid/vtkGreedyTerrainDecimation.h