vtkGLSLModifierFactory.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkGLSLModifierFactory_h
#define vtkGLSLModifierFactory_h
 
#include "vtkRenderingOpenGL2Module.h"
 
#include <functional>
#include <map>
#include <string>
 
VTK_ABI_NAMESPACE_BEGIN
class vtkGLSLModifierBase;
 
class VTKRENDERINGOPENGL2_EXPORT vtkGLSLModifierFactory
{
public:
  using NewModFunction = std::function<vtkGLSLModifierBase*(void* userData)>;
 
  static vtkGLSLModifierBase* CreateAMod(const std::string& modName);
 
  static void RegisterAMod(
    const std::string& modName, NewModFunction createFunction, void* userData = nullptr);
 
protected:
  vtkGLSLModifierFactory() = default;
  ~vtkGLSLModifierFactory() = default;
 
private:
  vtkGLSLModifierFactory(const vtkGLSLModifierFactory&) = delete;
  vtkGLSLModifierFactory& operator=(const vtkGLSLModifierFactory&) = delete;
 
  static vtkGLSLModifierFactory& GetInstance();
 
  struct ModCreator
  {
    NewModFunction F;
    void* UserData;
  };
  std::map<std::string, ModCreator> ModTable;
};
 
VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkGLSLModifierFactory.h