vtkToImplicitStrategy.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// Funded by CEA, DAM, DIF, F-91297 Arpajon, France
#ifndef vtkToImplicitStrategy_h
#define vtkToImplicitStrategy_h
 
#include "vtkFiltersReductionModule.h" // for export
#include "vtkObject.h"
 
VTK_ABI_NAMESPACE_BEGIN
class vtkDataArray;
class VTKFILTERSREDUCTION_EXPORT vtkToImplicitStrategy : public vtkObject
{
public:
  vtkTypeMacro(vtkToImplicitStrategy, vtkObject);
  void PrintSelf(std::ostream& os, vtkIndent indent) override;


  vtkSetMacro(Tolerance, double);
  vtkGetMacro(Tolerance, double);

  struct Optional
  {
    bool IsSome = false;
    double Value;
 
    Optional()
      : IsSome(false)
    {
    }
 
    Optional(double val)
      : IsSome(true)
      , Value(val)
    {
    }
  };

  virtual Optional EstimateReduction(vtkDataArray*) = 0;

  virtual vtkSmartPointer<vtkDataArray> Reduce(vtkDataArray*) = 0;

  virtual void ClearCache() {}
 
protected:
  vtkToImplicitStrategy() = default;
  ~vtkToImplicitStrategy() override = default;
 
  double Tolerance = 0.001;
 
private:
  vtkToImplicitStrategy(const vtkToImplicitStrategy&) = delete;
  void operator=(const vtkToImplicitStrategy&) = delete;
};
VTK_ABI_NAMESPACE_END
 
#endif // vtkToImplicitStrategy_h