vtkDGOperatorEntry.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkDGOperatorEntry_h
#define vtkDGOperatorEntry_h

#include "vtkFiltersCellGridModule.h" // For export macro.
#include "vtkStringToken.h"           // For ivar.

#include <array>
#include <vector>

VTK_ABI_NAMESPACE_BEGIN

class VTKFILTERSCELLGRID_EXPORT vtkDGOperatorEntry
{
public:
  using OperatorFunction = std::function<void(const std::array<double, 3>, std::vector<double>&)>;

  vtkDGOperatorEntry() = default;
  vtkDGOperatorEntry(const vtkDGOperatorEntry&) = default;
  vtkDGOperatorEntry(int numFunc, int opSize, OperatorFunction op, const std::string& shader)
    : NumberOfFunctions(numFunc)
    , OperatorSize(opSize)
    , Op(op)
    , ShaderOp(shader)
  {
  }

  operator bool() const { return !!this->Op; }

  std::string GetShaderString(
    const std::string& functionName, const std::string& parameterName) const;

  int NumberOfFunctions{ 0 };

  int OperatorSize{ 1 };

  OperatorFunction Op;

  std::string ShaderOp;
};

VTK_ABI_NAMESPACE_END
#endif // vtkDGOperatorEntry_h