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 vtkPolyDataPointSampler *	SafeDownCast (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 vtkPolyDataPointSampler *	New ()
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

typedef vtkPolyDataAlgorithm vtkPolyDataPointSampler::Superclass

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]`