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vtkConvexHull2D Class Reference

Produce filled convex hulls around a set of points. More...

#include <vtkConvexHull2D.h>

Inheritance diagram for vtkConvexHull2D:
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Collaboration diagram for vtkConvexHull2D:
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Public Types

enum  HullShapes { BoundingRectangle = 0, ConvexHull }
 
typedef vtkPolyDataAlgorithm Superclass
 
- Public Types inherited from vtkPolyDataAlgorithm
typedef vtkAlgorithm Superclass
 
- Public Types inherited from vtkAlgorithm
typedef vtkObject Superclass
 
enum  DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }
 

Public Member Functions

virtual int IsA (const char *type)
 
vtkConvexHull2DNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
virtual unsigned long GetMTime ()
 
virtual double GetScaleFactor ()
 
virtual void SetScaleFactor (double)
 
virtual bool GetOutline ()
 
virtual void SetOutline (bool)
 
virtual void OutlineOn ()
 
virtual void OutlineOff ()
 
virtual int GetHullShape ()
 
virtual void SetHullShape (int)
 
virtual void SetMinHullSizeInWorld (double)
 
virtual double GetMinHullSizeInWorld ()
 
virtual void SetMinHullSizeInDisplay (int)
 
virtual int GetMinHullSizeInDisplay ()
 
void SetRenderer (vtkRenderer *renderer)
 
vtkRenderer * GetRenderer ()
 
- Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithmNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
vtkDataObjectGetInput ()
 
vtkDataObjectGetInput (int port)
 
vtkPolyDataGetPolyDataInput (int port)
 
vtkPolyDataGetOutput ()
 
vtkPolyDataGetOutput (int)
 
virtual void SetOutput (vtkDataObject *d)
 
virtual int ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
void SetInputData (vtkDataObject *)
 
void SetInputData (int, vtkDataObject *)
 
void AddInputData (vtkDataObject *)
 
void AddInputData (int, vtkDataObject *)
 
- Public Member Functions inherited from vtkAlgorithm
vtkAlgorithmNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
int HasExecutive ()
 
vtkExecutiveGetExecutive ()
 
virtual void SetExecutive (vtkExecutive *executive)
 
virtual int ModifyRequest (vtkInformation *request, int when)
 
vtkInformation * GetInputPortInformation (int port)
 
vtkInformation * GetOutputPortInformation (int port)
 
int GetNumberOfInputPorts ()
 
int GetNumberOfOutputPorts ()
 
void UpdateProgress (double amount)
 
vtkInformation * GetInputArrayInformation (int idx)
 
void RemoveAllInputs ()
 
vtkDataObjectGetOutputDataObject (int port)
 
virtual void RemoveInputConnection (int port, vtkAlgorithmOutput *input)
 
virtual void RemoveInputConnection (int port, int idx)
 
virtual void RemoveAllInputConnections (int port)
 
int GetNumberOfInputConnections (int port)
 
int GetTotalNumberOfInputConnections ()
 
vtkAlgorithmOutputGetInputConnection (int port, int index)
 
vtkAlgorithmGetInputAlgorithm (int port, int index, int &algPort)
 
vtkAlgorithmGetInputAlgorithm (int port, int index)
 
vtkExecutiveGetInputExecutive (int port, int index)
 
vtkInformation * GetInputInformation (int port, int index)
 
vtkInformation * GetOutputInformation (int port)
 
virtual void UpdateInformation ()
 
virtual void PropagateUpdateExtent ()
 
virtual void UpdateWholeExtent ()
 
void ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
 
virtual double ComputePriority ()
 
int SetUpdateExtentToWholeExtent (int port)
 
int SetUpdateExtentToWholeExtent ()
 
void SetUpdateExtent (int port, int extent[6])
 
int ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
 
virtual int ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, unsigned long *mtime)
 
virtual vtkInformation * GetInformation ()
 
virtual void SetInformation (vtkInformation *)
 
virtual void Register (vtkObjectBase *o)
 
virtual void UnRegister (vtkObjectBase *o)
 
virtual void SetAbortExecute (int)
 
virtual int GetAbortExecute ()
 
virtual void AbortExecuteOn ()
 
virtual void AbortExecuteOff ()
 
virtual void SetProgress (double)
 
virtual double GetProgress ()
 
void SetProgressText (const char *ptext)
 
virtual char * GetProgressText ()
 
virtual unsigned long GetErrorCode ()
 
virtual void SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
 
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)
 
vtkDataObjectGetInputDataObject (int port, int connection)
 
virtual void SetInputConnection (int port, vtkAlgorithmOutput *input)
 
virtual void SetInputConnection (vtkAlgorithmOutput *input)
 
virtual void AddInputConnection (int port, vtkAlgorithmOutput *input)
 
virtual void AddInputConnection (vtkAlgorithmOutput *input)
 
virtual void SetInputDataObject (int port, vtkDataObject *data)
 
virtual void SetInputDataObject (vtkDataObject *data)
 
virtual void AddInputDataObject (int port, vtkDataObject *data)
 
virtual void AddInputDataObject (vtkDataObject *data)
 
vtkAlgorithmOutputGetOutputPort (int index)
 
vtkAlgorithmOutputGetOutputPort ()
 
vtkAlgorithmGetInputAlgorithm ()
 
vtkExecutiveGetInputExecutive ()
 
vtkInformation * GetInputInformation ()
 
virtual void Update (int port)
 
virtual void Update ()
 
virtual void SetReleaseDataFlag (int)
 
virtual int GetReleaseDataFlag ()
 
void ReleaseDataFlagOn ()
 
void ReleaseDataFlagOff ()
 
int UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
 
int UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
 
void SetUpdateExtent (int port, int piece, int numPieces, int ghostLevel)
 
void SetUpdateExtent (int piece, int numPieces, int ghostLevel)
 
void SetUpdateExtent (int extent[6])
 
int * GetUpdateExtent ()
 
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 ()
 
int GetUpdatePiece (int port)
 
int GetUpdateNumberOfPieces ()
 
int GetUpdateNumberOfPieces (int port)
 
int GetUpdateGhostLevel ()
 
int GetUpdateGhostLevel (int port)
 

Static Public Member Functions

static vtkConvexHull2DNew ()
 
static int IsTypeOf (const char *type)
 
static vtkConvexHull2DSafeDownCast (vtkObjectBase *o)
 
static void CalculateBoundingRectangle (vtkPoints *inPoints, vtkPoints *outPoints, double minimumHullSize=1.0)
 
static void CalculateConvexHull (vtkPoints *inPoints, vtkPoints *outPoints, double minimumHullSize=1.0)
 
- Static Public Member Functions inherited from vtkPolyDataAlgorithm
static vtkPolyDataAlgorithmNew ()
 
static int IsTypeOf (const char *type)
 
static vtkPolyDataAlgorithmSafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithmNew ()
 
static int IsTypeOf (const char *type)
 
static vtkAlgorithmSafeDownCast (vtkObjectBase *o)
 
static void SetDefaultExecutivePrototype (vtkExecutive *proto)
 
static vtkInformationIntegerKey * INPUT_IS_OPTIONAL ()
 
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 * PRESERVES_DATASET ()
 
static vtkInformationIntegerKey * PRESERVES_GEOMETRY ()
 
static vtkInformationIntegerKey * PRESERVES_BOUNDS ()
 
static vtkInformationIntegerKey * PRESERVES_TOPOLOGY ()
 
static vtkInformationIntegerKey * PRESERVES_ATTRIBUTES ()
 
static vtkInformationIntegerKey * PRESERVES_RANGES ()
 
static vtkInformationIntegerKey * MANAGES_METAINFORMATION ()
 

Protected Member Functions

virtual vtkObjectBase * NewInstanceInternal () const
 
 vtkConvexHull2D ()
 
 ~vtkConvexHull2D ()
 
int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
- Protected Member Functions inherited from vtkPolyDataAlgorithm
 vtkPolyDataAlgorithm ()
 
 ~vtkPolyDataAlgorithm ()
 
virtual int RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
 
virtual int FillOutputPortInformation (int port, vtkInformation *info)
 
virtual int FillInputPortInformation (int port, vtkInformation *info)
 
virtual int RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
- Protected Member Functions inherited from vtkAlgorithm
 vtkAlgorithm ()
 
 ~vtkAlgorithm ()
 
virtual void SetNumberOfInputPorts (int n)
 
virtual void SetNumberOfOutputPorts (int n)
 
int InputPortIndexInRange (int index, const char *action)
 
int OutputPortIndexInRange (int index, const char *action)
 
int GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
 
virtual vtkExecutiveCreateDefaultExecutive ()
 
virtual void ReportReferences (vtkGarbageCollector *)
 
virtual void SetNumberOfInputConnections (int port, int n)
 
int GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
 
int GetInputArrayAssociation (int idx, vtkDataObject *input)
 
vtkDataArray * GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
 
vtkDataArray * GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
 
vtkDataArray * GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
 
vtkDataArray * GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
 
vtkDataArray * GetInputArrayToProcess (int idx, vtkDataObject *input)
 
vtkDataArray * GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
 
vtkAbstractArray * GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
 
vtkInformation * GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
 
virtual void SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
 
void SetInputDataInternal (int port, vtkDataObject *input)
 
void AddInputDataInternal (int port, vtkDataObject *input)
 
virtual void SetErrorCode (unsigned long)
 

Additional Inherited Members

- Public Attributes inherited from vtkAlgorithm
int AbortExecute
 
- Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey * PORT_REQUIREMENTS_FILLED ()
 
- Protected Attributes inherited from vtkAlgorithm
vtkInformation * Information
 
double Progress
 
char * ProgressText
 
unsigned long ErrorCode
 
- Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutiveDefaultExecutivePrototype
 

Detailed Description

Produce filled convex hulls around a set of points.

Produces a vtkPolyData comprised of a filled polygon of the convex hull of the input points. You may alternatively choose to output a bounding rectangle. Static methods are provided that calculate a (counter-clockwise) hull based on a set of input points.

To help maintain the property of guaranteed visibility hulls may be artificially scaled by setting MinHullSizeInWorld. This is particularly helpful in the case that there are only one or two points as it avoids producing a degenerate polygon. This setting is also available as an argument to the static methods.

Setting a vtkRenderer on the filter enables the possibility to set MinHullSizeInDisplay to the desired number of display pixels to cover in each of the x- and y-dimensions.

Setting OutlineOn() additionally produces an outline of the hull on output port 1.

Attention
This filter operates in the x,y-plane and as such works best with an interactor style that does not permit camera rotation such as vtkInteractorStyleRubberBand2D.
Thanks:
Thanks to Colin Myers, University of Leeds for providing this implementation.
Tests:
vtkConvexHull2D (Tests)

Definition at line 65 of file vtkConvexHull2D.h.

Member Typedef Documentation

Definition at line 69 of file vtkConvexHull2D.h.

Member Enumeration Documentation

Enumerator
BoundingRectangle 
ConvexHull 

Definition at line 85 of file vtkConvexHull2D.h.

Constructor & Destructor Documentation

vtkConvexHull2D::vtkConvexHull2D ( )
protected
vtkConvexHull2D::~vtkConvexHull2D ( )
protected

Member Function Documentation

static vtkConvexHull2D* vtkConvexHull2D::New ( )
static
static int vtkConvexHull2D::IsTypeOf ( const char *  type)
static
virtual int vtkConvexHull2D::IsA ( const char *  type)
virtual

Reimplemented from vtkPolyDataAlgorithm.

static vtkConvexHull2D* vtkConvexHull2D::SafeDownCast ( vtkObjectBase *  o)
static
virtual vtkObjectBase* vtkConvexHull2D::NewInstanceInternal ( ) const
protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

vtkConvexHull2D* vtkConvexHull2D::NewInstance ( ) const
void vtkConvexHull2D::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
virtual double vtkConvexHull2D::GetScaleFactor ( )
virtual

Scale the hull by the amount specified. Defaults to 1.0.

virtual void vtkConvexHull2D::SetScaleFactor ( double  )
virtual

Scale the hull by the amount specified. Defaults to 1.0.

virtual bool vtkConvexHull2D::GetOutline ( )
virtual

Produce an outline (polyline) of the hull on output port 1.

virtual void vtkConvexHull2D::SetOutline ( bool  )
virtual

Produce an outline (polyline) of the hull on output port 1.

virtual void vtkConvexHull2D::OutlineOn ( )
virtual

Produce an outline (polyline) of the hull on output port 1.

virtual void vtkConvexHull2D::OutlineOff ( )
virtual

Produce an outline (polyline) of the hull on output port 1.

virtual int vtkConvexHull2D::GetHullShape ( )
virtual

Set the shape of the hull to BoundingRectangle or ConvexHull.

virtual void vtkConvexHull2D::SetHullShape ( int  )
virtual

Set the shape of the hull to BoundingRectangle or ConvexHull.

virtual void vtkConvexHull2D::SetMinHullSizeInWorld ( double  )
virtual

Set the minimum x,y-dimensions of each hull in world coordinates. Defaults to 1.0. Set to 0.0 to disable.

virtual double vtkConvexHull2D::GetMinHullSizeInWorld ( )
virtual

Set the minimum x,y-dimensions of each hull in world coordinates. Defaults to 1.0. Set to 0.0 to disable.

virtual void vtkConvexHull2D::SetMinHullSizeInDisplay ( int  )
virtual

Set the minimum x,y-dimensions of each hull in pixels. You must also set a vtkRenderer. Defaults to 1. Set to 0 to disable.

virtual int vtkConvexHull2D::GetMinHullSizeInDisplay ( )
virtual

Set the minimum x,y-dimensions of each hull in pixels. You must also set a vtkRenderer. Defaults to 1. Set to 0 to disable.

void vtkConvexHull2D::SetRenderer ( vtkRenderer *  renderer)

Renderer needed for MinHullSizeInDisplay calculation. Not reference counted.

vtkRenderer* vtkConvexHull2D::GetRenderer ( )

Renderer needed for MinHullSizeInDisplay calculation. Not reference counted.

virtual unsigned long vtkConvexHull2D::GetMTime ( )
virtual

The modified time of this filter.

static void vtkConvexHull2D::CalculateBoundingRectangle ( vtkPoints *  inPoints,
vtkPoints *  outPoints,
double  minimumHullSize = 1.0 
)
static

Convenience methods to calculate a convex hull from a set of vtkPointS.

static void vtkConvexHull2D::CalculateConvexHull ( vtkPoints *  inPoints,
vtkPoints *  outPoints,
double  minimumHullSize = 1.0 
)
static

Convenience methods to calculate a convex hull from a set of vtkPointS.

int vtkConvexHull2D::RequestData ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.


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