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vtkPolyDataPointSampler Class Reference

generate points from vtkPolyData More...

#include <vtkPolyDataPointSampler.h>

Inherits vtkPolyDataAlgorithm.

Public Member Functions

virtual void SetDistance (double)
 
virtual double GetDistance ()
 
virtual int GetGenerateVertexPoints ()
 
virtual void SetGenerateVertexPoints (int)
 
virtual void GenerateVertexPointsOn ()
 
virtual void GenerateVertexPointsOff ()
 
virtual int GetGenerateEdgePoints ()
 
virtual void SetGenerateEdgePoints (int)
 
virtual void GenerateEdgePointsOn ()
 
virtual void GenerateEdgePointsOff ()
 
virtual int GetGenerateInteriorPoints ()
 
virtual void SetGenerateInteriorPoints (int)
 
virtual void GenerateInteriorPointsOn ()
 
virtual void GenerateInteriorPointsOff ()
 
virtual int GetGenerateVertices ()
 
virtual void SetGenerateVertices (int)
 
virtual void GenerateVerticesOn ()
 
virtual void GenerateVerticesOff ()
 

Static Public Member Functions

static vtkPolyDataPointSamplerNew ()
 

Protected Member Functions

 vtkPolyDataPointSampler ()
 
 ~vtkPolyDataPointSampler ()
 
int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
void SampleEdge (vtkPoints *pts, double x0[3], double x1[3])
 
void SampleTriangle (vtkPoints *newPts, vtkPoints *inPts, vtkIdType *pts)
 
void SamplePolygon (vtkPoints *newPts, vtkPoints *inPts, vtkIdType npts, vtkIdType *pts)
 

Protected Attributes

double Distance
 
double Distance2
 
int GenerateVertexPoints
 
int GenerateEdgePoints
 
int GenerateInteriorPoints
 
int GenerateVertices
 
typedef vtkPolyDataAlgorithm Superclass
 
static int IsTypeOf (const char *type)
 
static vtkPolyDataPointSamplerSafeDownCast (vtkObjectBase *o)
 
virtual int IsA (const char *type)
 
vtkPolyDataPointSamplerNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
virtual vtkObjectBase * NewInstanceInternal () const
 

Detailed Description

generate points from vtkPolyData

vtkPolyDataPointSampler generates points from input vtkPolyData. The points are placed approximately a specified distance apart.

This filter functions as follows. First, it regurgitates all input points, then samples all lines, plus edges associated with the input polygons and triangle strips to produce edge points. Finally, the interiors of polygons and triangle strips are subsampled to produce points. All of these functiona can be enabled or disabled separately. Note that this algorithm only approximately generates points the specified distance apart. Generally the point density is finer than requested.

Warning
Point generation can be useful in a variety of applications. For example, generating seed points for glyphing or streamline generation. Another useful application is generating points for implicit modeling. In many cases implicit models can be more efficiently generated from points than from polygons or other primitives.
See Also
vtkImplicitModeller
Tests:
vtkPolyDataPointSampler (Tests)

Definition at line 49 of file vtkPolyDataPointSampler.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkPolyDataPointSampler::Superclass

Standard macros for type information and printing.

Definition at line 57 of file vtkPolyDataPointSampler.h.

Constructor & Destructor Documentation

vtkPolyDataPointSampler::vtkPolyDataPointSampler ( )
protected
vtkPolyDataPointSampler::~vtkPolyDataPointSampler ( )
inlineprotected

Definition at line 105 of file vtkPolyDataPointSampler.h.

Member Function Documentation

static vtkPolyDataPointSampler* vtkPolyDataPointSampler::New ( )
static

Instantiate this class.

static int vtkPolyDataPointSampler::IsTypeOf ( const char *  type)
static

Standard macros for type information and printing.

virtual int vtkPolyDataPointSampler::IsA ( const char *  type)
virtual

Standard macros for type information and printing.

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

Standard macros for type information and printing.

virtual vtkObjectBase* vtkPolyDataPointSampler::NewInstanceInternal ( ) const
protectedvirtual

Standard macros for type information and printing.

vtkPolyDataPointSampler* vtkPolyDataPointSampler::NewInstance ( ) const

Standard macros for type information and printing.

void vtkPolyDataPointSampler::PrintSelf ( ostream &  os,
vtkIndent  indent 
)

Standard macros for type information and printing.

virtual void vtkPolyDataPointSampler::SetDistance ( double  )
virtual

Set/Get the approximate distance between points. This is an absolute distance measure. The default is 0.01.

virtual double vtkPolyDataPointSampler::GetDistance ( )
virtual

Set/Get the approximate distance between points. This is an absolute distance measure. The default is 0.01.

virtual int vtkPolyDataPointSampler::GetGenerateVertexPoints ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertex points should be output.

virtual void vtkPolyDataPointSampler::SetGenerateVertexPoints ( int  )
virtual

Specify/retrieve a boolean flag indicating whether cell vertex points should be output.

virtual void vtkPolyDataPointSampler::GenerateVertexPointsOn ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertex points should be output.

virtual void vtkPolyDataPointSampler::GenerateVertexPointsOff ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertex points should be output.

virtual int vtkPolyDataPointSampler::GetGenerateEdgePoints ( )
virtual

Specify/retrieve a boolean flag indicating whether cell edges should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::SetGenerateEdgePoints ( int  )
virtual

Specify/retrieve a boolean flag indicating whether cell edges should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateEdgePointsOn ( )
virtual

Specify/retrieve a boolean flag indicating whether cell edges should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateEdgePointsOff ( )
virtual

Specify/retrieve a boolean flag indicating whether cell edges should be sampled to produce output points. The default is true.

virtual int vtkPolyDataPointSampler::GetGenerateInteriorPoints ( )
virtual

Specify/retrieve a boolean flag indicating whether cell interiors should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::SetGenerateInteriorPoints ( int  )
virtual

Specify/retrieve a boolean flag indicating whether cell interiors should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateInteriorPointsOn ( )
virtual

Specify/retrieve a boolean flag indicating whether cell interiors should be sampled to produce output points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateInteriorPointsOff ( )
virtual

Specify/retrieve a boolean flag indicating whether cell interiors should be sampled to produce output points. The default is true.

virtual int vtkPolyDataPointSampler::GetGenerateVertices ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertices should be generated. Cell vertices are useful if you actually want to display the points (that is, for each point generated, a vertex is generated). Recall that VTK only renders vertices and not points. The default is true.

virtual void vtkPolyDataPointSampler::SetGenerateVertices ( int  )
virtual

Specify/retrieve a boolean flag indicating whether cell vertices should be generated. Cell vertices are useful if you actually want to display the points (that is, for each point generated, a vertex is generated). Recall that VTK only renders vertices and not points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateVerticesOn ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertices should be generated. Cell vertices are useful if you actually want to display the points (that is, for each point generated, a vertex is generated). Recall that VTK only renders vertices and not points. The default is true.

virtual void vtkPolyDataPointSampler::GenerateVerticesOff ( )
virtual

Specify/retrieve a boolean flag indicating whether cell vertices should be generated. Cell vertices are useful if you actually want to display the points (that is, for each point generated, a vertex is generated). Recall that VTK only renders vertices and not points. The default is true.

int vtkPolyDataPointSampler::RequestData ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protected
void vtkPolyDataPointSampler::SampleEdge ( vtkPoints *  pts,
double  x0[3],
double  x1[3] 
)
protected
void vtkPolyDataPointSampler::SampleTriangle ( vtkPoints *  newPts,
vtkPoints *  inPts,
vtkIdType *  pts 
)
protected
void vtkPolyDataPointSampler::SamplePolygon ( vtkPoints *  newPts,
vtkPoints *  inPts,
vtkIdType  npts,
vtkIdType *  pts 
)
protected

Member Data Documentation

double vtkPolyDataPointSampler::Distance
protected

Definition at line 109 of file vtkPolyDataPointSampler.h.

double vtkPolyDataPointSampler::Distance2
protected

Definition at line 110 of file vtkPolyDataPointSampler.h.

int vtkPolyDataPointSampler::GenerateVertexPoints
protected

Definition at line 112 of file vtkPolyDataPointSampler.h.

int vtkPolyDataPointSampler::GenerateEdgePoints
protected

Definition at line 113 of file vtkPolyDataPointSampler.h.

int vtkPolyDataPointSampler::GenerateInteriorPoints
protected

Definition at line 114 of file vtkPolyDataPointSampler.h.

int vtkPolyDataPointSampler::GenerateVertices
protected

Definition at line 115 of file vtkPolyDataPointSampler.h.


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