vtkPVExtractSelection.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkPVExtractSelection_h
#define vtkPVExtractSelection_h
 
#include "vtkExtractSelection.h"
#include "vtkPVVTKExtensionsExtractionModule.h" //needed for exports
 
class vtkSelectionNode;
 
class VTKPVVTKEXTENSIONSEXTRACTION_EXPORT vtkPVExtractSelection : public vtkExtractSelection
{
public:
  vtkTypeMacro(vtkPVExtractSelection, vtkExtractSelection);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static const int OUTPUT_PORT_EXTRACTED_DATASET = 0;
  static const int OUTPUT_PORT_SELECTION_IDS = 1;
  static const int OUTPUT_PORT_SELECTION_ORIGINAL = 2;
 
  static vtkPVExtractSelection* New();
 
  void RemoveAllSelectionsInputs() { this->SetInputConnection(1, nullptr); }
 
protected:
  vtkPVExtractSelection();
  ~vtkPVExtractSelection() override;
 
  // sets up empty output dataset
  int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;
 
  // runs the algorithm and fills the output with results
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
  int FillOutputPortInformation(int port, vtkInformation* info) override;
 
  vtkSelectionNode* LocateSelection(unsigned int level, unsigned int index, vtkSelection* sel);
  vtkSelectionNode* LocateSelection(unsigned int composite_index, vtkSelection* sel);
 
  vtkSmartPointer<vtkSelector> NewSelectionOperator(
    vtkSelectionNode::SelectionContent type) override;
 
private:
  vtkPVExtractSelection(const vtkPVExtractSelection&) = delete;
  void operator=(const vtkPVExtractSelection&) = delete;
 
  class vtkSelectionNodeVector;
  void RequestDataInternal(
    vtkSelectionNodeVector& outputs, vtkDataObject* dataObjectOutput, vtkSelectionNode* sel);
 
  // Returns the combined content type for the selection.
  int GetContentType(vtkSelection* sel);
};
 
#endif