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/*=========================================================================
Program: Visualization Toolkit
Module: vtkExtractVectorComponents.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkExtractVectorComponents - extract components of vector as separate scalars
// .SECTION Description
// vtkExtractVectorComponents is a filter that extracts vector components as
// separate scalars. This is accomplished by creating three different outputs.
// Each output is the same as the input, except that the scalar values will be
// one of the three components of the vector. These can be found in the
// VxComponent, VyComponent, and VzComponent.
// Alternatively, if the ExtractToFieldData flag is set, the filter will
// put all the components in the field data. The first component will be
// the scalar and the others will be non-attribute arrays.
// .SECTION Caveats
// This filter is unusual in that it creates multiple outputs.
// If you use the GetOutput() method, you will be retrieving the x vector
// component.
#ifndef vtkExtractVectorComponents_h
#define vtkExtractVectorComponents_h
#include "vtkFiltersExtractionModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"
class vtkDataSet;
class VTKFILTERSEXTRACTION_EXPORT vtkExtractVectorComponents : public vtkDataSetAlgorithm
{
public:
static vtkExtractVectorComponents *New();
vtkTypeMacro(vtkExtractVectorComponents,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify the input data or filter.
virtual void SetInputData(vtkDataSet *input);
// Description:
// Get the output dataset representing velocity x-component. If output is
// NULL then input hasn't been set, which is necessary for abstract
// objects. (Note: this method returns the same information as the
// GetOutput() method with an index of 0.)
vtkDataSet *GetVxComponent();
// Description:
// Get the output dataset representing velocity y-component. If output is
// NULL then input hasn't been set, which is necessary for abstract
// objects. (Note: this method returns the same information as the
// GetOutput() method with an index of 1.)
// Note that if ExtractToFieldData is true, this output will be empty.
vtkDataSet *GetVyComponent();
// Description:
// Get the output dataset representing velocity z-component. If output is
// NULL then input hasn't been set, which is necessary for abstract
// objects. (Note: this method returns the same information as the
// GetOutput() method with an index of 2.)
// Note that if ExtractToFieldData is true, this output will be empty.
vtkDataSet *GetVzComponent();
// Description:
// Determines whether the vector components will be put
// in separate outputs or in the first output's field data
vtkSetMacro(ExtractToFieldData, int);
vtkGetMacro(ExtractToFieldData, int);
vtkBooleanMacro(ExtractToFieldData, int);
protected:
vtkExtractVectorComponents();
~vtkExtractVectorComponents();
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int ExtractToFieldData;
int OutputsInitialized;
private:
vtkExtractVectorComponents(const vtkExtractVectorComponents&); // Not implemented.
void operator=(const vtkExtractVectorComponents&); // Not implemented.
};
#endif
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