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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @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.
*
* @warning
* This class has been threaded with vtkSMPTools. Using TBB or other
* non-sequential type (set in the CMake variable
* VTK_SMP_IMPLEMENTATION_TYPE) may improve performance significantly.
*/
#ifndef vtkExtractVectorComponents_h
#define vtkExtractVectorComponents_h
#include "vtkDataSetAlgorithm.h"
#include "vtkFiltersExtractionModule.h" // For export macro
VTK_ABI_NAMESPACE_BEGIN
class vtkDataSet;
class VTKFILTERSEXTRACTION_EXPORT vtkExtractVectorComponents : public vtkDataSetAlgorithm
{
public:
static vtkExtractVectorComponents* New();
vtkTypeMacro(vtkExtractVectorComponents, vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Specify the input data or filter.
*/
virtual void SetInputData(vtkDataSet* input);
/**
* Get the output dataset representing velocity x-component. If output is
* nullptr 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
* nullptr 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
* nullptr 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, vtkTypeBool);
vtkGetMacro(ExtractToFieldData, vtkTypeBool);
vtkBooleanMacro(ExtractToFieldData, vtkTypeBool);
///@}
protected:
vtkExtractVectorComponents();
~vtkExtractVectorComponents() override;
int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
vtkTypeBool ExtractToFieldData;
int OutputsInitialized;
private:
vtkExtractVectorComponents(const vtkExtractVectorComponents&) = delete;
void operator=(const vtkExtractVectorComponents&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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