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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.
=========================================================================*/
/**
* @class vtkExtractVectorComponents
* @brief extract components of vector as separate scalars
*
* 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.
*
* @warning
* 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);
/**
* Specify the input data or filter.
*/
virtual void SetInputData(vtkDataSet *input);
/**
* 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();
/**
* 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();
/**
* 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();
//@{
/**
* 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&) VTK_DELETE_FUNCTION;
void operator=(const vtkExtractVectorComponents&) VTK_DELETE_FUNCTION;
};
#endif
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