VTK  9.0.20200806
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
vtkDelaunay3D Class Reference

create 3D Delaunay triangulation of input points More...

#include <vtkDelaunay3D.h>

Inheritance diagram for vtkDelaunay3D:
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Collaboration diagram for vtkDelaunay3D:
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Public Types

typedef vtkUnstructuredGridAlgorithm Superclass
 
- Public Types inherited from vtkUnstructuredGridAlgorithm
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...
 
vtkDelaunay3DNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Methods invoked by print to print information about the object including superclasses. More...
 
virtual void SetAlpha (double)
 Specify alpha (or distance) value to control output of this filter. More...
 
virtual double GetAlpha ()
 
virtual void SetAlphaTets (vtkTypeBool)
 Boolean controls whether tetrahedra are output for non-zero alpha values. More...
 
virtual vtkTypeBool GetAlphaTets ()
 
virtual void AlphaTetsOn ()
 
virtual void AlphaTetsOff ()
 
virtual void SetAlphaTris (vtkTypeBool)
 Boolean controls whether triangles are output for non-zero alpha values. More...
 
virtual vtkTypeBool GetAlphaTris ()
 
virtual void AlphaTrisOn ()
 
virtual void AlphaTrisOff ()
 
virtual void SetAlphaLines (vtkTypeBool)
 Boolean controls whether lines are output for non-zero alpha values. More...
 
virtual vtkTypeBool GetAlphaLines ()
 
virtual void AlphaLinesOn ()
 
virtual void AlphaLinesOff ()
 
virtual void SetAlphaVerts (vtkTypeBool)
 Boolean controls whether vertices are output for non-zero alpha values. More...
 
virtual vtkTypeBool GetAlphaVerts ()
 
virtual void AlphaVertsOn ()
 
virtual void AlphaVertsOff ()
 
virtual void SetTolerance (double)
 Specify a tolerance to control discarding of closely spaced points. More...
 
virtual double GetTolerance ()
 
virtual void SetOffset (double)
 Specify a multiplier to control the size of the initial, bounding Delaunay triangulation. More...
 
virtual double GetOffset ()
 
virtual void SetBoundingTriangulation (vtkTypeBool)
 Boolean controls whether bounding triangulation points (and associated triangles) are included in the output. More...
 
virtual vtkTypeBool GetBoundingTriangulation ()
 
virtual void BoundingTriangulationOn ()
 
virtual void BoundingTriangulationOff ()
 
void SetLocator (vtkIncrementalPointLocator *locator)
 Set / get a spatial locator for merging points. More...
 
virtual vtkIncrementalPointLocatorGetLocator ()
 
void CreateDefaultLocator ()
 Create default locator. More...
 
vtkUnstructuredGridInitPointInsertion (double center[3], double length, vtkIdType numPts, vtkPoints *&points)
 This is a helper method used with InsertPoint() to create tetrahedronalizations of points. More...
 
void InsertPoint (vtkUnstructuredGrid *Mesh, vtkPoints *points, vtkIdType id, double x[3], vtkIdList *holeTetras)
 This is a helper method used with InitPointInsertion() to create tetrahedronalizations of points. More...
 
void EndPointInsertion ()
 Invoke this method after all points have been inserted. More...
 
vtkMTimeType GetMTime () override
 Return the MTime also considering the locator. More...
 
virtual void SetOutputPointsPrecision (int)
 Set/get the desired precision for the output types. More...
 
virtual int GetOutputPointsPrecision ()
 
- Public Member Functions inherited from vtkUnstructuredGridAlgorithm
vtkUnstructuredGridAlgorithmNewInstance () const
 
vtkUnstructuredGridGetOutput ()
 Get the output data object for a port on this algorithm. More...
 
vtkUnstructuredGridGetOutput (int)
 
virtual void SetOutput (vtkDataObject *d)
 
vtkTypeBool ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
 see vtkAlgorithm for details More...
 
vtkDataObjectGetInput (int port)
 
vtkDataObjectGetInput ()
 
vtkUnstructuredGridGetUnstructuredGridInput (int port)
 
void SetInputData (vtkDataObject *)
 Assign a data object as input. More...
 
void SetInputData (int, vtkDataObject *)
 
void AddInputData (vtkDataObject *)
 Assign a data object as input. More...
 
void AddInputData (int, vtkDataObject *)
 
- Public Member Functions inherited from vtkAlgorithm
vtkAlgorithmNewInstance () const
 
int HasExecutive ()
 Check whether this algorithm has an assigned executive. More...
 
vtkExecutiveGetExecutive ()
 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...
 
vtkInformationGetInputPortInformation (int port)
 Get the information object associated with an input port. More...
 
vtkInformationGetOutputPortInformation (int port)
 Get the information object associated with an output port. More...
 
virtual vtkInformationGetInformation ()
 Set/Get the information object associated with this algorithm. More...
 
virtual void SetInformation (vtkInformation *)
 
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 Register (vtkObjectBase *o) override
 Participate in garbage collection. More...
 
void UnRegister (vtkObjectBase *o) override
 Decrease the reference count (release by another object). More...
 
virtual void SetAbortExecute (vtkTypeBool)
 Set/Get the AbortExecute flag for the process object. More...
 
virtual vtkTypeBool GetAbortExecute ()
 
virtual void AbortExecuteOn ()
 
virtual void AbortExecuteOff ()
 
virtual double GetProgress ()
 Get the execution progress of a process object. More...
 
void SetProgress (double)
 SetProgress is deprecated. More...
 
void UpdateProgress (double amount)
 Update the progress of the process object. 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 ()
 
virtual double GetProgressScale ()
 
void SetProgressText (const char *ptext)
 Set the current text message associated with the progress state. More...
 
virtual char * GetProgressText ()
 
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)
 
virtual void SetInputArrayToProcess (int idx, vtkInformation *info)
 
virtual void SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
 String based versions of SetInputArrayToProcess(). More...
 
vtkInformationGetInputArrayInformation (int idx)
 Get the info object for the specified input array to this algorithm. More...
 
void RemoveAllInputs ()
 Remove all the input data. More...
 
vtkDataObjectGetOutputDataObject (int port)
 Get the data object that will contain the algorithm output for the given port. More...
 
vtkDataObjectGetInputDataObject (int port, int connection)
 Get the data object that will contain the algorithm input for the given port and given connection. More...
 
virtual void SetInputConnection (int port, vtkAlgorithmOutput *input)
 Set the connection for the given input port index. More...
 
virtual void SetInputConnection (vtkAlgorithmOutput *input)
 
virtual void AddInputConnection (int port, vtkAlgorithmOutput *input)
 Add a connection to the given input port index. More...
 
virtual void AddInputConnection (vtkAlgorithmOutput *input)
 
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)
 
vtkAlgorithmOutputGetOutputPort (int index)
 Get a proxy object corresponding to the given output port of this algorithm. More...
 
vtkAlgorithmOutputGetOutputPort ()
 
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...
 
vtkAlgorithmOutputGetInputConnection (int port, int index)
 Get the algorithm output port connected to an input port. More...
 
vtkAlgorithmGetInputAlgorithm (int port, int index, int &algPort)
 Returns the algorithm and the output port index of that algorithm connected to a port-index pair. More...
 
vtkAlgorithmGetInputAlgorithm (int port, int index)
 Returns the algorithm connected to a port-index pair. More...
 
vtkAlgorithmGetInputAlgorithm ()
 Equivalent to GetInputAlgorithm(0, 0). More...
 
vtkExecutiveGetInputExecutive (int port, int index)
 Returns the executive associated with a particular input connection. More...
 
vtkExecutiveGetInputExecutive ()
 Equivalent to GetInputExecutive(0, 0) More...
 
vtkInformationGetInputInformation (int port, int index)
 Return the information object that is associated with a particular input connection. More...
 
vtkInformationGetInputInformation ()
 Equivalent to GetInputInformation(0, 0) More...
 
vtkInformationGetOutputInformation (int port)
 Return the information object that is associated with a particular output port. More...
 
virtual void Update (int port)
 Bring this algorithm's outputs up-to-date. More...
 
virtual void Update ()
 
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 void SetReleaseDataFlag (int)
 Turn release data flag on or off for all output ports. More...
 
virtual int GetReleaseDataFlag ()
 
void ReleaseDataFlagOn ()
 
void ReleaseDataFlagOff ()
 
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)
 
int * GetUpdateExtent ()
 These functions return the update extent for output ports that use 3D extents. More...
 
int * GetUpdateExtent (int port)
 
void GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
 
void GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
 
void GetUpdateExtent (int extent[6])
 
void GetUpdateExtent (int port, int extent[6])
 
int GetUpdatePiece ()
 These functions return the update extent for output ports that use piece extents. More...
 
int GetUpdatePiece (int port)
 
int GetUpdateNumberOfPieces ()
 
int GetUpdateNumberOfPieces (int port)
 
int GetUpdateGhostLevel ()
 
int GetUpdateGhostLevel (int port)
 
void SetProgressObserver (vtkProgressObserver *)
 If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...
 
virtual vtkProgressObserverGetProgressObserver ()
 
- 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...
 
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)
 
vtkCommandGetCommand (unsigned long tag)
 
void RemoveObserver (vtkCommand *)
 
void RemoveObservers (unsigned long event, vtkCommand *)
 
void RemoveObservers (const char *event, vtkCommand *)
 
vtkTypeBool HasObserver (unsigned long event, vtkCommand *)
 
vtkTypeBool HasObserver (const char *event, vtkCommand *)
 
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)
 
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)
 
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
 Allow user to set the AbortFlagOn() with the return value of the callback method. More...
 
int InvokeEvent (unsigned long event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
int InvokeEvent (const char *event, void *callData)
 
int InvokeEvent (unsigned long event)
 
int InvokeEvent (const char *event)
 
- 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 PrintHeader (ostream &os, vtkIndent indent)
 
virtual void PrintTrailer (ostream &os, vtkIndent indent)
 
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...
 

Static Public Member Functions

static vtkTypeBool IsTypeOf (const char *type)
 
static vtkDelaunay3DSafeDownCast (vtkObjectBase *o)
 
static vtkDelaunay3DNew ()
 Construct object with Alpha = 0.0; Tolerance = 0.001; Offset = 2.5; BoundingTriangulation turned off. More...
 
- Static Public Member Functions inherited from vtkUnstructuredGridAlgorithm
static vtkUnstructuredGridAlgorithmNew ()
 
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkUnstructuredGridAlgorithmSafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithmNew ()
 
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkAlgorithmSafeDownCast (vtkObjectBase *o)
 
static vtkInformationIntegerKeyINPUT_IS_OPTIONAL ()
 Keys used to specify input port requirements. More...
 
static vtkInformationIntegerKeyINPUT_IS_REPEATABLE ()
 
static vtkInformationInformationVectorKeyINPUT_REQUIRED_FIELDS ()
 
static vtkInformationStringVectorKeyINPUT_REQUIRED_DATA_TYPE ()
 
static vtkInformationInformationVectorKeyINPUT_ARRAYS_TO_PROCESS ()
 
static vtkInformationIntegerKeyINPUT_PORT ()
 
static vtkInformationIntegerKeyINPUT_CONNECTION ()
 
static vtkInformationIntegerKeyCAN_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 vtkInformationIntegerKeyCAN_HANDLE_PIECE_REQUEST ()
 Key that tells the pipeline that a particular algorithm can or cannot handle piece request. More...
 
static void SetDefaultExecutivePrototype (vtkExecutive *proto)
 If the DefaultExecutivePrototype is set, a copy of it is created in CreateDefaultExecutive() using NewInstance(). More...
 
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 
static void BreakOnError ()
 This method is called when vtkErrorMacro executes. More...
 
static void SetGlobalWarningDisplay (int val)
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOn ()
 
static void GlobalWarningDisplayOff ()
 
static int GetGlobalWarningDisplay ()
 
- 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 vtkObjectBaseNew ()
 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 vtkObjectBaseNewInstanceInternal () const
 
 vtkDelaunay3D ()
 
 ~vtkDelaunay3D () override
 
int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
 This is called by the superclass. More...
 
int FindTetra (vtkUnstructuredGrid *Mesh, double x[3], vtkIdType tetraId, int depth)
 
int InSphere (double x[3], vtkIdType tetraId)
 
void InsertTetra (vtkUnstructuredGrid *Mesh, vtkPoints *points, vtkIdType tetraId)
 
vtkIdType FindEnclosingFaces (double x[3], vtkUnstructuredGrid *Mesh, vtkIdList *tetras, vtkIdList *faces, vtkIncrementalPointLocator *Locator)
 
int FillInputPortInformation (int, vtkInformation *) override
 Fill the input port information objects for this algorithm. More...
 
- Protected Member Functions inherited from vtkUnstructuredGridAlgorithm
 vtkUnstructuredGridAlgorithm ()
 
 ~vtkUnstructuredGridAlgorithm () override
 
virtual int RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
 
virtual int RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 This is called by the superclass. More...
 
int FillOutputPortInformation (int port, vtkInformation *info) override
 Fill the output port information objects for this algorithm. More...
 
- Protected Member Functions inherited from vtkAlgorithm
 vtkAlgorithm ()
 
 ~vtkAlgorithm () override
 
virtual void SetNumberOfInputPorts (int n)
 Set the number of input ports used by the algorithm. More...
 
virtual void SetNumberOfOutputPorts (int n)
 Set the number of output ports provided by the algorithm. More...
 
int InputPortIndexInRange (int index, const char *action)
 
int OutputPortIndexInRange (int index, const char *action)
 
int GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
 Get the assocition of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
 
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)
 
vtkDataArrayGetInputArrayToProcess (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...
 
vtkDataArrayGetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
 
vtkDataArrayGetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
 Filters that have multiple connections on one port can use this signature. More...
 
vtkDataArrayGetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
 
vtkDataArrayGetInputArrayToProcess (int idx, vtkDataObject *input)
 
vtkDataArrayGetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
 
vtkAbstractArrayGetInputAbstractArrayToProcess (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...
 
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
 
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
 Filters that have multiple connections on one port can use this signature. More...
 
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
 
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
 
vtkAbstractArrayGetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
 
vtkInformationGetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
 This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector. More...
 
virtual vtkExecutiveCreateDefaultExecutive ()
 Create a default executive. More...
 
virtual void SetErrorCode (unsigned long)
 The error code contains a possible error that occurred while reading or writing the file. 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)
 
- 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 ()
 
- Protected Member Functions inherited from vtkObjectBase
 vtkObjectBase ()
 
virtual ~vtkObjectBase ()
 
 vtkObjectBase (const vtkObjectBase &)
 
void operator= (const vtkObjectBase &)
 

Protected Attributes

double Alpha
 
vtkTypeBool AlphaTets
 
vtkTypeBool AlphaTris
 
vtkTypeBool AlphaLines
 
vtkTypeBool AlphaVerts
 
double Tolerance
 
vtkTypeBool BoundingTriangulation
 
double Offset
 
int OutputPointsPrecision
 
vtkIncrementalPointLocatorLocator
 
vtkTetraArray * TetraArray
 
int NumberOfDuplicatePoints
 
int NumberOfDegeneracies
 
int * References
 
- Protected Attributes inherited from vtkAlgorithm
vtkInformationInformation
 
unsigned long ErrorCode
 
double Progress
 
char * ProgressText
 
vtkProgressObserverProgressObserver
 
- Protected Attributes inherited from vtkObject
bool Debug
 
vtkTimeStamp MTime
 
vtkSubjectHelper * SubjectHelper
 
- Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t > ReferenceCount
 
vtkWeakPointerBase ** WeakPointers
 

Additional Inherited Members

- Public Attributes inherited from vtkAlgorithm
vtkTypeBool AbortExecute
 
- Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKeyPORT_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 vtkExecutiveDefaultExecutivePrototype
 

Detailed Description

create 3D Delaunay triangulation of input points

vtkDelaunay3D is a filter that constructs a 3D Delaunay triangulation from a list of input points. These points may be represented by any dataset of type vtkPointSet and subclasses. The output of the filter is an unstructured grid dataset. Usually the output is a tetrahedral mesh, but if a non-zero alpha distance value is specified (called the "alpha" value), then only tetrahedra, triangles, edges, and vertices laying within the alpha radius are output. In other words, non-zero alpha values may result in arbitrary combinations of tetrahedra, triangles, lines, and vertices. (The notion of alpha value is derived from Edelsbrunner's work on "alpha shapes".) Note that a modification to alpha shapes enables output of combinations of tetrahedra, triangles, lines, and/or verts (see the boolean ivars AlphaTets, AlphaTris, AlphaLines, AlphaVerts).

The 3D Delaunay triangulation is defined as the triangulation that satisfies the Delaunay criterion for n-dimensional simplexes (in this case n=3 and the simplexes are tetrahedra). This criterion states that a circumsphere of each simplex in a triangulation contains only the n+1 defining points of the simplex. (See text for more information.) While in two dimensions this translates into an "optimal" triangulation, this is not true in 3D, since a measurement for optimality in 3D is not agreed on.

Delaunay triangulations are used to build topological structures from unorganized (or unstructured) points. The input to this filter is a list of points specified in 3D. (If you wish to create 2D triangulations see vtkDelaunay2D.) The output is an unstructured grid.

The Delaunay triangulation can be numerically sensitive. To prevent problems, try to avoid injecting points that will result in triangles with bad aspect ratios (1000:1 or greater). In practice this means inserting points that are "widely dispersed", and enables smooth transition of triangle sizes throughout the mesh. (You may even want to add extra points to create a better point distribution.) If numerical problems are present, you will see a warning message to this effect at the end of the triangulation process.

Warning
Points arranged on a regular lattice (termed degenerate cases) can be triangulated in more than one way (at least according to the Delaunay criterion). The choice of triangulation (as implemented by this algorithm) depends on the order of the input points. The first four points will form a tetrahedron; other degenerate points (relative to this initial tetrahedron) will not break it.
Points that are coincident (or nearly so) may be discarded by the algorithm. This is because the Delaunay triangulation requires unique input points. You can control the definition of coincidence with the "Tolerance" instance variable.
The output of the Delaunay triangulation is supposedly a convex hull. In certain cases this implementation may not generate the convex hull. This behavior can be controlled by the Offset instance variable. Offset is a multiplier used to control the size of the initial triangulation. The larger the offset value, the more likely you will generate a convex hull; and the more likely you are to see numerical problems.
The implementation of this algorithm varies from the 2D Delaunay algorithm (i.e., vtkDelaunay2D) in an important way. When points are injected into the triangulation, the search for the enclosing tetrahedron is quite different. In the 3D case, the closest previously inserted point point is found, and then the connected tetrahedra are searched to find the containing one. (In 2D, a "walk" towards the enclosing triangle is performed.) If the triangulation is Delaunay, then an enclosing tetrahedron will be found. However, in degenerate cases an enclosing tetrahedron may not be found and the point will be rejected.
See also
vtkDelaunay2D vtkGaussianSplatter vtkUnstructuredGrid

Definition at line 107 of file vtkDelaunay3D.h.

Member Typedef Documentation

◆ Superclass

Definition at line 110 of file vtkDelaunay3D.h.

Constructor & Destructor Documentation

◆ vtkDelaunay3D()

vtkDelaunay3D::vtkDelaunay3D ( )
protected

◆ ~vtkDelaunay3D()

vtkDelaunay3D::~vtkDelaunay3D ( )
overrideprotected

Member Function Documentation

◆ IsTypeOf()

static vtkTypeBool vtkDelaunay3D::IsTypeOf ( const char *  type)
static

◆ IsA()

virtual vtkTypeBool vtkDelaunay3D::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 vtkUnstructuredGridAlgorithm.

◆ SafeDownCast()

static vtkDelaunay3D* vtkDelaunay3D::SafeDownCast ( vtkObjectBase o)
static

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkDelaunay3D::NewInstanceInternal ( ) const
protectedvirtual

Reimplemented from vtkUnstructuredGridAlgorithm.

◆ NewInstance()

vtkDelaunay3D* vtkDelaunay3D::NewInstance ( ) const

◆ PrintSelf()

void vtkDelaunay3D::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 vtkUnstructuredGridAlgorithm.

◆ New()

static vtkDelaunay3D* vtkDelaunay3D::New ( )
static

Construct object with Alpha = 0.0; Tolerance = 0.001; Offset = 2.5; BoundingTriangulation turned off.

◆ SetAlpha()

virtual void vtkDelaunay3D::SetAlpha ( double  )
virtual

Specify alpha (or distance) value to control output of this filter.

For a non-zero alpha value, only verts, edges, faces, or tetra contained within the circumsphere (of radius alpha) will be output. Otherwise, only tetrahedra will be output. Note that the flags AlphaTets, AlphaTris, AlphaLines, and AlphaVerts control whether these primitives are output when Alpha is non-zero. (By default all tets, triangles, lines and verts satisfying the alpha shape criterion are output.)

◆ GetAlpha()

virtual double vtkDelaunay3D::GetAlpha ( )
virtual

◆ SetAlphaTets()

virtual void vtkDelaunay3D::SetAlphaTets ( vtkTypeBool  )
virtual

Boolean controls whether tetrahedra are output for non-zero alpha values.

◆ GetAlphaTets()

virtual vtkTypeBool vtkDelaunay3D::GetAlphaTets ( )
virtual

◆ AlphaTetsOn()

virtual void vtkDelaunay3D::AlphaTetsOn ( )
virtual

◆ AlphaTetsOff()

virtual void vtkDelaunay3D::AlphaTetsOff ( )
virtual

◆ SetAlphaTris()

virtual void vtkDelaunay3D::SetAlphaTris ( vtkTypeBool  )
virtual

Boolean controls whether triangles are output for non-zero alpha values.

◆ GetAlphaTris()

virtual vtkTypeBool vtkDelaunay3D::GetAlphaTris ( )
virtual

◆ AlphaTrisOn()

virtual void vtkDelaunay3D::AlphaTrisOn ( )
virtual

◆ AlphaTrisOff()

virtual void vtkDelaunay3D::AlphaTrisOff ( )
virtual

◆ SetAlphaLines()

virtual void vtkDelaunay3D::SetAlphaLines ( vtkTypeBool  )
virtual

Boolean controls whether lines are output for non-zero alpha values.

◆ GetAlphaLines()

virtual vtkTypeBool vtkDelaunay3D::GetAlphaLines ( )
virtual

◆ AlphaLinesOn()

virtual void vtkDelaunay3D::AlphaLinesOn ( )
virtual

◆ AlphaLinesOff()

virtual void vtkDelaunay3D::AlphaLinesOff ( )
virtual

◆ SetAlphaVerts()

virtual void vtkDelaunay3D::SetAlphaVerts ( vtkTypeBool  )
virtual

Boolean controls whether vertices are output for non-zero alpha values.

◆ GetAlphaVerts()

virtual vtkTypeBool vtkDelaunay3D::GetAlphaVerts ( )
virtual

◆ AlphaVertsOn()

virtual void vtkDelaunay3D::AlphaVertsOn ( )
virtual

◆ AlphaVertsOff()

virtual void vtkDelaunay3D::AlphaVertsOff ( )
virtual

◆ SetTolerance()

virtual void vtkDelaunay3D::SetTolerance ( double  )
virtual

Specify a tolerance to control discarding of closely spaced points.

This tolerance is specified as a fraction of the diagonal length of the bounding box of the points.

◆ GetTolerance()

virtual double vtkDelaunay3D::GetTolerance ( )
virtual

◆ SetOffset()

virtual void vtkDelaunay3D::SetOffset ( double  )
virtual

Specify a multiplier to control the size of the initial, bounding Delaunay triangulation.

◆ GetOffset()

virtual double vtkDelaunay3D::GetOffset ( )
virtual

◆ SetBoundingTriangulation()

virtual void vtkDelaunay3D::SetBoundingTriangulation ( vtkTypeBool  )
virtual

Boolean controls whether bounding triangulation points (and associated triangles) are included in the output.

(These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output.)

◆ GetBoundingTriangulation()

virtual vtkTypeBool vtkDelaunay3D::GetBoundingTriangulation ( )
virtual

◆ BoundingTriangulationOn()

virtual void vtkDelaunay3D::BoundingTriangulationOn ( )
virtual

◆ BoundingTriangulationOff()

virtual void vtkDelaunay3D::BoundingTriangulationOff ( )
virtual

◆ SetLocator()

void vtkDelaunay3D::SetLocator ( vtkIncrementalPointLocator locator)

Set / get a spatial locator for merging points.

By default, an instance of vtkPointLocator is used.

◆ GetLocator()

virtual vtkIncrementalPointLocator* vtkDelaunay3D::GetLocator ( )
virtual

◆ CreateDefaultLocator()

void vtkDelaunay3D::CreateDefaultLocator ( )

Create default locator.

Used to create one when none is specified. The locator is used to eliminate "coincident" points.

◆ InitPointInsertion()

vtkUnstructuredGrid* vtkDelaunay3D::InitPointInsertion ( double  center[3],
double  length,
vtkIdType  numPts,
vtkPoints *&  points 
)

This is a helper method used with InsertPoint() to create tetrahedronalizations of points.

Its purpose is construct an initial Delaunay triangulation into which to inject other points. You must specify the center of a cubical bounding box and its length, as well as the number of points to insert. The method returns a pointer to an unstructured grid. Use this pointer to manipulate the mesh as necessary. You must delete (with Delete()) the mesh when done. Note: This initialization method places points forming bounding octahedron at the end of the Mesh's point list. That is, InsertPoint() assumes that you will be inserting points between (0,numPtsToInsert-1).

◆ InsertPoint()

void vtkDelaunay3D::InsertPoint ( vtkUnstructuredGrid Mesh,
vtkPoints points,
vtkIdType  id,
double  x[3],
vtkIdList holeTetras 
)

This is a helper method used with InitPointInsertion() to create tetrahedronalizations of points.

Its purpose is to inject point at coordinates specified into tetrahedronalization. The point id is an index into the list of points in the mesh structure. (See vtkDelaunay3D::InitPointInsertion() for more information.) When you have completed inserting points, traverse the mesh structure to extract desired tetrahedra (or tetra faces and edges).The holeTetras id list lists all the tetrahedra that are deleted (invalid) in the mesh structure.

◆ EndPointInsertion()

void vtkDelaunay3D::EndPointInsertion ( )

Invoke this method after all points have been inserted.

The purpose of the method is to clean up internal data structures. Note that the (vtkUnstructuredGrid *)Mesh returned from InitPointInsertion() is NOT deleted, you still are responsible for cleaning that up.

◆ GetMTime()

vtkMTimeType vtkDelaunay3D::GetMTime ( )
overridevirtual

Return the MTime also considering the locator.

Reimplemented from vtkObject.

◆ SetOutputPointsPrecision()

virtual void vtkDelaunay3D::SetOutputPointsPrecision ( int  )
virtual

Set/get the desired precision for the output types.

See the documentation for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of the available precision settings.

◆ GetOutputPointsPrecision()

virtual int vtkDelaunay3D::GetOutputPointsPrecision ( )
virtual

◆ RequestData()

int vtkDelaunay3D::RequestData ( vtkInformation request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
)
overrideprotectedvirtual

This is called by the superclass.

This is the method you should override.

Reimplemented from vtkUnstructuredGridAlgorithm.

◆ FindTetra()

int vtkDelaunay3D::FindTetra ( vtkUnstructuredGrid Mesh,
double  x[3],
vtkIdType  tetraId,
int  depth 
)
protected

◆ InSphere()

int vtkDelaunay3D::InSphere ( double  x[3],
vtkIdType  tetraId 
)
protected

◆ InsertTetra()

void vtkDelaunay3D::InsertTetra ( vtkUnstructuredGrid Mesh,
vtkPoints points,
vtkIdType  tetraId 
)
protected

◆ FindEnclosingFaces()

vtkIdType vtkDelaunay3D::FindEnclosingFaces ( double  x[3],
vtkUnstructuredGrid Mesh,
vtkIdList tetras,
vtkIdList faces,
vtkIncrementalPointLocator Locator 
)
protected

◆ FillInputPortInformation()

int vtkDelaunay3D::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 vtkUnstructuredGridAlgorithm.

Member Data Documentation

◆ Alpha

double vtkDelaunay3D::Alpha
protected

Definition at line 272 of file vtkDelaunay3D.h.

◆ AlphaTets

vtkTypeBool vtkDelaunay3D::AlphaTets
protected

Definition at line 273 of file vtkDelaunay3D.h.

◆ AlphaTris

vtkTypeBool vtkDelaunay3D::AlphaTris
protected

Definition at line 274 of file vtkDelaunay3D.h.

◆ AlphaLines

vtkTypeBool vtkDelaunay3D::AlphaLines
protected

Definition at line 275 of file vtkDelaunay3D.h.

◆ AlphaVerts

vtkTypeBool vtkDelaunay3D::AlphaVerts
protected

Definition at line 276 of file vtkDelaunay3D.h.

◆ Tolerance

double vtkDelaunay3D::Tolerance
protected

Definition at line 277 of file vtkDelaunay3D.h.

◆ BoundingTriangulation

vtkTypeBool vtkDelaunay3D::BoundingTriangulation
protected

Definition at line 278 of file vtkDelaunay3D.h.

◆ Offset

double vtkDelaunay3D::Offset
protected

Definition at line 279 of file vtkDelaunay3D.h.

◆ OutputPointsPrecision

int vtkDelaunay3D::OutputPointsPrecision
protected

Definition at line 280 of file vtkDelaunay3D.h.

◆ Locator

vtkIncrementalPointLocator* vtkDelaunay3D::Locator
protected

Definition at line 282 of file vtkDelaunay3D.h.

◆ TetraArray

vtkTetraArray* vtkDelaunay3D::TetraArray
protected

Definition at line 284 of file vtkDelaunay3D.h.

◆ NumberOfDuplicatePoints

int vtkDelaunay3D::NumberOfDuplicatePoints
protected

Definition at line 289 of file vtkDelaunay3D.h.

◆ NumberOfDegeneracies

int vtkDelaunay3D::NumberOfDegeneracies
protected

Definition at line 290 of file vtkDelaunay3D.h.

◆ References

int* vtkDelaunay3D::References
protected

Definition at line 293 of file vtkDelaunay3D.h.


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