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

 Program:   Visualization Toolkit
 Module:    vtkGraphAnnotationLayersFilter.h

 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 vtkGraphAnnotationLayersFilter_h
#define vtkGraphAnnotationLayersFilter_h

#include "vtkRenderingAnnotationModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
#include "vtkSmartPointer.h" // needed for ivars

class vtkAppendPolyData;
class vtkConvexHull2D;
class vtkRenderer;


class VTKRENDERINGANNOTATION_EXPORT vtkGraphAnnotationLayersFilter: public vtkPolyDataAlgorithm
{
public:
  static vtkGraphAnnotationLayersFilter *New();
  vtkTypeMacro(vtkGraphAnnotationLayersFilter, vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  void OutlineOn();
  void OutlineOff();
  void SetOutline(bool b);

  void SetScaleFactor(double scale);

  void SetHullShapeToBoundingRectangle();

  void SetHullShapeToConvexHull();

  void SetMinHullSizeInWorld(double size);

  void SetMinHullSizeInDisplay(int size);

  void SetRenderer(vtkRenderer* renderer);

  virtual unsigned long GetMTime();

protected:
  vtkGraphAnnotationLayersFilter();
  ~vtkGraphAnnotationLayersFilter();


  int RequestData(vtkInformation *, vtkInformationVector **,
    vtkInformationVector *);

  int FillInputPortInformation(int port, vtkInformation* info);

private:
  vtkGraphAnnotationLayersFilter(const vtkGraphAnnotationLayersFilter&); // Not implemented.
  void operator=(const vtkGraphAnnotationLayersFilter&); // Not implemented.

  vtkSmartPointer<vtkAppendPolyData> HullAppend;
  vtkSmartPointer<vtkAppendPolyData> OutlineAppend;
  vtkSmartPointer<vtkConvexHull2D> ConvexHullFilter;
};

#endif // vtkGraphAnnotationLayersFilter_h