vtkAppendFilter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkAppendFilter_h
#define vtkAppendFilter_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"
 
#include <vector> // For std::vector
 
VTK_ABI_NAMESPACE_BEGIN
class vtkDataSetAttributes;
class vtkDataSetCollection;
 
class VTKFILTERSCORE_EXPORT vtkAppendFilter : public vtkUnstructuredGridAlgorithm
{
public:
  static vtkAppendFilter* New();
  vtkTypeMacro(vtkAppendFilter, vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkDataSet* GetInput(int idx);
  vtkDataSet* GetInput() { return this->GetInput(0); }


  vtkGetMacro(MergePoints, vtkTypeBool);
  vtkSetMacro(MergePoints, vtkTypeBool);
  vtkBooleanMacro(MergePoints, vtkTypeBool);


  vtkSetClampMacro(Tolerance, double, 0.0, VTK_DOUBLE_MAX);
  vtkGetMacro(Tolerance, double);


  vtkSetMacro(ToleranceIsAbsolute, bool);
  vtkGetMacro(ToleranceIsAbsolute, bool);
  vtkBooleanMacro(ToleranceIsAbsolute, bool);

  void RemoveInputData(vtkDataSet* in);

  vtkDataSetCollection* GetInputList();


  vtkSetClampMacro(OutputPointsPrecision, int, SINGLE_PRECISION, DEFAULT_PRECISION);
  vtkGetMacro(OutputPointsPrecision, int);
 
protected:
  vtkAppendFilter();
  ~vtkAppendFilter() override;
 
  // Usual data generation method
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
  int FillInputPortInformation(int port, vtkInformation* info) override;
 
  // list of data sets to append together.
  // Here as a convenience.  It is a copy of the input array.
  vtkDataSetCollection* InputList;
 
  // If true we will attempt to merge points. Must also not have
  // ghost cells defined.
  vtkTypeBool MergePoints;
 
  int OutputPointsPrecision;
  double Tolerance;
 
  // If true, tolerance is used as is. If false, tolerance is multiplied by
  // the diagonal of the bounding box of the input.
  bool ToleranceIsAbsolute;
 
private:
  vtkAppendFilter(const vtkAppendFilter&) = delete;
  void operator=(const vtkAppendFilter&) = delete;
 
  // Get all input data sets that have points, cells, or both.
  // Caller must delete the returned vtkDataSetCollection.
  std::vector<vtkSmartPointer<vtkDataSet>> GetNonEmptyInputs(vtkInformationVector** inputVector);
 
  void AppendArrays(int attributesType, vtkInformationVector** inputVector,
    vtkUnstructuredGrid* output, vtkIdType totalNumberOfElements);
};
 
VTK_ABI_NAMESPACE_END
#endif