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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkBackgroundColorMonitor

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkBackgroundColorMonitor_h
#define vtkBackgroundColorMonitor_h

#include "vtkRenderingCoreModule.h" // for export macro
#include "vtkObject.h"

class vtkRenderer;

class VTKRENDERINGCORE_EXPORT vtkBackgroundColorMonitor : public vtkObject
{
public:
  static vtkBackgroundColorMonitor* New();
  vtkTypeMacro(vtkBackgroundColorMonitor, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  bool StateChanged(vtkRenderer *ren);

  void Update(vtkRenderer *ren);

protected:
  vtkBackgroundColorMonitor();
  ~vtkBackgroundColorMonitor(){}

private:
  unsigned int UpTime;
  bool Gradient;
  double Color1[3];
  double Color2[3];

private:
 vtkBackgroundColorMonitor(const vtkBackgroundColorMonitor&); // Not implemented
 void operator=(const vtkBackgroundColorMonitor&); // Not implemented
};

#endif