VTK
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
vtkShepardMethod Class Reference

sample unstructured points onto structured points using the method of Shepard More...

#include <vtkShepardMethod.h>

Inherits vtkImageAlgorithm.

Public Types

typedef vtkImageAlgorithm Superclass
 

Public Member Functions

virtual int IsA (const char *type)
 
vtkShepardMethodNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
double ComputeModelBounds (double origin[3], double ar[3])
 
void SetSampleDimensions (int i, int j, int k)
 
void SetSampleDimensions (int dim[3])
 
virtual int * GetSampleDimensions ()
 
virtual void GetSampleDimensions (int data[3])
 
virtual void SetMaximumDistance (double)
 
virtual double GetMaximumDistance ()
 
virtual void SetModelBounds (double, double, double, double, double, double)
 
virtual void SetModelBounds (double[6])
 
virtual double * GetModelBounds ()
 
virtual void GetModelBounds (double data[6])
 
virtual void SetNullValue (double)
 
virtual double GetNullValue ()
 

Static Public Member Functions

static int IsTypeOf (const char *type)
 
static vtkShepardMethodSafeDownCast (vtkObjectBase *o)
 
static vtkShepardMethodNew ()
 

Protected Member Functions

virtual vtkObjectBase * NewInstanceInternal () const
 
 vtkShepardMethod ()
 
 ~vtkShepardMethod ()
 
virtual int RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
virtual int RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
 
virtual int FillInputPortInformation (int port, vtkInformation *info)
 

Protected Attributes

int SampleDimensions [3]
 
double MaximumDistance
 
double ModelBounds [6]
 
double NullValue
 

Detailed Description

sample unstructured points onto structured points using the method of Shepard

vtkShepardMethod is a filter used to visualize unstructured point data using Shepard's method. The method works by resampling the unstructured points onto a structured points set. The influence functions are described as "inverse distance weighted". Once the structured points are computed, the usual visualization techniques (e.g., iso-contouring or volume rendering) can be used visualize the structured points.

Warning
The input to this filter is any dataset type. This filter can be used to resample any form of data, i.e., the input data need not be unstructured.
The bounds of the data (i.e., the sample space) is automatically computed if not set by the user.
If you use a maximum distance less than 1.0, some output points may never receive a contribution. The final value of these points can be specified with the "NullValue" instance variable.
Tests:
vtkShepardMethod (Tests)

Definition at line 48 of file vtkShepardMethod.h.

Member Typedef Documentation

typedef vtkImageAlgorithm vtkShepardMethod::Superclass

Definition at line 51 of file vtkShepardMethod.h.

Constructor & Destructor Documentation

vtkShepardMethod::vtkShepardMethod ( )
protected
vtkShepardMethod::~vtkShepardMethod ( )
inlineprotected

Definition at line 98 of file vtkShepardMethod.h.

Member Function Documentation

static int vtkShepardMethod::IsTypeOf ( const char *  type)
static
virtual int vtkShepardMethod::IsA ( const char *  type)
virtual
static vtkShepardMethod* vtkShepardMethod::SafeDownCast ( vtkObjectBase *  o)
static
virtual vtkObjectBase* vtkShepardMethod::NewInstanceInternal ( ) const
protectedvirtual
vtkShepardMethod* vtkShepardMethod::NewInstance ( ) const
void vtkShepardMethod::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
static vtkShepardMethod* vtkShepardMethod::New ( )
static

Construct with sample dimensions=(50,50,50) and so that model bounds are automatically computed from input. Null value for each unvisited output point is 0.0. Maximum distance is 0.25.

double vtkShepardMethod::ComputeModelBounds ( double  origin[3],
double  ar[3] 
)

Compute ModelBounds from input geometry.

virtual int* vtkShepardMethod::GetSampleDimensions ( )
virtual

Specify i-j-k dimensions on which to sample input points.

virtual void vtkShepardMethod::GetSampleDimensions ( int  data[3])
virtual

Specify i-j-k dimensions on which to sample input points.

void vtkShepardMethod::SetSampleDimensions ( int  i,
int  j,
int  k 
)

Set the i-j-k dimensions on which to sample the distance function.

void vtkShepardMethod::SetSampleDimensions ( int  dim[3])

Set the i-j-k dimensions on which to sample the distance function.

virtual void vtkShepardMethod::SetMaximumDistance ( double  )
virtual

Specify influence distance of each input point. This distance is a fraction of the length of the diagonal of the sample space. Thus, values of 1.0 will cause each input point to influence all points in the structured point dataset. Values less than 1.0 can improve performance significantly.

virtual double vtkShepardMethod::GetMaximumDistance ( )
virtual

Specify influence distance of each input point. This distance is a fraction of the length of the diagonal of the sample space. Thus, values of 1.0 will cause each input point to influence all points in the structured point dataset. Values less than 1.0 can improve performance significantly.

virtual void vtkShepardMethod::SetModelBounds ( double  ,
double  ,
double  ,
double  ,
double  ,
double   
)
virtual

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::SetModelBounds ( double  [6])
virtual

Specify the position in space to perform the sampling.

virtual double* vtkShepardMethod::GetModelBounds ( )
virtual

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::GetModelBounds ( double  data[6])
virtual

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::SetNullValue ( double  )
virtual

Set the Null value for output points not receiving a contribution from the input points.

virtual double vtkShepardMethod::GetNullValue ( )
virtual

Set the Null value for output points not receiving a contribution from the input points.

virtual int vtkShepardMethod::RequestInformation ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual
virtual int vtkShepardMethod::RequestData ( vtkInformation *  request,
vtkInformationVector **  inputVector,
vtkInformationVector *  outputVector 
)
protectedvirtual
virtual int vtkShepardMethod::FillInputPortInformation ( int  port,
vtkInformation *  info 
)
protectedvirtual

Member Data Documentation

int vtkShepardMethod::SampleDimensions[3]
protected

Definition at line 112 of file vtkShepardMethod.h.

double vtkShepardMethod::MaximumDistance
protected

Definition at line 113 of file vtkShepardMethod.h.

double vtkShepardMethod::ModelBounds[6]
protected

Definition at line 114 of file vtkShepardMethod.h.

double vtkShepardMethod::NullValue
protected

Definition at line 115 of file vtkShepardMethod.h.


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