vtkPolyDataPointSampler Class Reference

#include <vtkPolyDataPointSampler.h>

Inheritance diagram for vtkPolyDataPointSampler:

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Collaboration diagram for vtkPolyDataPointSampler:

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List of all members.


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 48 of file vtkPolyDataPointSampler.h.

typedef vtkPolyDataAlgorithm Superclass
static int IsTypeOf (const char *type)
static vtkPolyDataPointSamplerSafeDownCast (vtkObject *o)
virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)

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

Member Typedef Documentation

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 56 of file vtkPolyDataPointSampler.h.


Constructor & Destructor Documentation

vtkPolyDataPointSampler::vtkPolyDataPointSampler (  )  [protected]

vtkPolyDataPointSampler::~vtkPolyDataPointSampler (  )  [inline, protected]

Definition at line 104 of file vtkPolyDataPointSampler.h.


Member Function Documentation

static vtkPolyDataPointSampler* vtkPolyDataPointSampler::New (  )  [static]

Instantiate this class.

Reimplemented from vtkPolyDataAlgorithm.

virtual const char* vtkPolyDataPointSampler::GetClassName (  )  [virtual]

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

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

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

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

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

static vtkPolyDataPointSampler* vtkPolyDataPointSampler::SafeDownCast ( vtkObject o  )  [static]

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

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

Standard macros for type information and printing.

Reimplemented from vtkPolyDataAlgorithm.

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 request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
) [protected, virtual]

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

Reimplemented from vtkPolyDataAlgorithm.

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

Definition at line 108 of file vtkPolyDataPointSampler.h.

Definition at line 109 of file vtkPolyDataPointSampler.h.

Definition at line 111 of file vtkPolyDataPointSampler.h.

Definition at line 112 of file vtkPolyDataPointSampler.h.

Definition at line 113 of file vtkPolyDataPointSampler.h.

Definition at line 114 of file vtkPolyDataPointSampler.h.


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

Generated on Wed Aug 24 11:57:02 2011 for VTK by  doxygen 1.5.6