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vtkShepardMethod Class Reference

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

#include <vtkShepardMethod.h>

Inheritance diagram for vtkShepardMethod:

[legend]Collaboration diagram for vtkShepardMethod:

[legend]List of all members.

Public Methods
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
float	ComputeModelBounds (float origin[3], float ar[3])
virtual int *	GetSampleDimensions ()
virtual void	GetSampleDimensions (int data[3])
void	SetSampleDimensions (int i, int j, int k)
void	SetSampleDimensions (int dim[3])
virtual void	SetMaximumDistance (float)
virtual float	GetMaximumDistance ()
virtual void	SetModelBounds (float, float, float, float, float, float)
virtual void	SetModelBounds (float[6])
virtual float *	GetModelBounds ()
virtual void	GetModelBounds (float data[6])
virtual void	SetNullValue (float)
virtual float	GetNullValue ()
Static Public Methods
int	IsTypeOf (const char *type)
vtkShepardMethod *	SafeDownCast (vtkObject *o)
vtkShepardMethod *	New ()
Protected Methods
	vtkShepardMethod ()
	~vtkShepardMethod ()
	vtkShepardMethod (const vtkShepardMethod &)
void	operator= (const vtkShepardMethod &)
void	Execute ()
Protected Attributes
int	SampleDimensions [3]
float	MaximumDistance
float	ModelBounds [6]
float	NullValue

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Detailed Description

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

Date:

2000/12/10 20:08:52

Revision:

1.30

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 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.

Warning:

The bounds of the data (i.e., the sample space) is automatically computed if not set by the user.

Warning:

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.

Examples:

vtkShepardMethod (examples)

Definition at line 74 of file vtkShepardMethod.h.

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Constructor & Destructor Documentation

vtkShepardMethod::vtkShepardMethod (    )  [protected]

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

Definition at line 116 of file vtkShepardMethod.h.

vtkShepardMethod::vtkShepardMethod (  const vtkShepardMethod &    )  [inline, protected]

Definition at line 117 of file vtkShepardMethod.h.

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Member Function Documentation

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

Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkDataSetToStructuredPointsFilter.

int vtkShepardMethod::IsTypeOf (  const char *    type )  [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 vtkDataSetToStructuredPointsFilter.

virtual int vtkShepardMethod::IsA (  const char *    type )  [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 vtkDataSetToStructuredPointsFilter.

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

Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkDataSetToStructuredPointsFilter.

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 vtkSource.

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. Reimplemented from vtkStructuredPointsSource.

float vtkShepardMethod::ComputeModelBounds (  float    origin[3], float    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]

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 (  float    )  [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 float vtkShepardMethod::GetMaximumDistance (    )  [virtual]

virtual void vtkShepardMethod::SetModelBounds (  float   , float   , float   , float   , float   , float    )  [virtual]

Specify the position in space to perform the sampling.

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

virtual float* vtkShepardMethod::GetModelBounds (    )  [virtual]

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

virtual void vtkShepardMethod::SetNullValue (  float    )  [virtual]

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

virtual float vtkShepardMethod::GetNullValue (    )  [virtual]

void vtkShepardMethod::operator= (  const vtkShepardMethod &    )  [inline, protected]

Definition at line 118 of file vtkShepardMethod.h.

void vtkShepardMethod::Execute (    )  [protected, virtual]

Reimplemented from vtkSource.

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Member Data Documentation

int vtkShepardMethod::SampleDimensions[3] [protected]

Definition at line 122 of file vtkShepardMethod.h.

float vtkShepardMethod::MaximumDistance [protected]

Definition at line 123 of file vtkShepardMethod.h.

float vtkShepardMethod::ModelBounds[6] [protected]

Definition at line 124 of file vtkShepardMethod.h.

float vtkShepardMethod::NullValue [protected]

Definition at line 125 of file vtkShepardMethod.h.

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

• graphics/vtkShepardMethod.h

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