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vtkShepardMethod Class Reference

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

#include <vtkShepardMethod.h>

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List of all members.

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 intGetSampleDimensions ()
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 doubleGetModelBounds ()
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 vtkObjectBaseNewInstanceInternal () 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

Reimplemented from vtkImageAlgorithm.

Definition at line 51 of file vtkShepardMethod.h.


Constructor & Destructor Documentation

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

Definition at line 98 of file vtkShepardMethod.h.


Member Function Documentation

static int vtkShepardMethod::IsTypeOf ( const char *  name) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageAlgorithm.

virtual int vtkShepardMethod::IsA ( const char *  name) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageAlgorithm.

Reimplemented from vtkImageAlgorithm.

virtual vtkObjectBase* vtkShepardMethod::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkImageAlgorithm.

Reimplemented from vtkImageAlgorithm.

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

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkImageAlgorithm.

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.

Reimplemented from vtkAlgorithm.

Compute ModelBounds from input geometry.

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.

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

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.

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

Subclasses can reimplement this method to collect information from their inputs and set information for their outputs.

Reimplemented from vtkImageAlgorithm.

virtual int vtkShepardMethod::RequestData ( vtkInformation request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
) [protected, virtual]

This is called in response to a REQUEST_DATA request from the executive. Subclasses should override either this method or the ExecuteDataWithInformation method in order to generate data for their outputs. For images, the output arrays will already be allocated, so all that is necessary is to fill in the voxel values.

Reimplemented from vtkImageAlgorithm.

virtual int vtkShepardMethod::FillInputPortInformation ( int  port,
vtkInformation info 
) [protected, virtual]

These method should be reimplemented by subclasses that have more than a single input or single output. See vtkAlgorithm for more information.

Reimplemented from vtkImageAlgorithm.


Member Data Documentation

Definition at line 112 of file vtkShepardMethod.h.

Definition at line 113 of file vtkShepardMethod.h.

Definition at line 114 of file vtkShepardMethod.h.

Definition at line 115 of file vtkShepardMethod.h.


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