//  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
//
//  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
//  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

#ifndef VTKVIEWER_GEOMETRYFILTER_H
#define VTKVIEWER_GEOMETRYFILTER_H

#include "VTKViewer.h"

#include <vtkGeometryFilter.h>

#include <vector>

#ifdef WIN32
#pragma warning ( disable:4251 )
#endif

class vtkUnstructuredGrid;

/*! \brief This class used same as vtkGeometryFilter. See documentation on VTK for more information.
 */
class VTKVIEWER_EXPORT VTKViewer_GeometryFilter : public vtkGeometryFilter 
{
public:
  /*! \fn static VTKViewer_GeometryFilter *New()
   */
  static VTKViewer_GeometryFilter *New();
  
  /*! \fn vtkTypeRevisionMacro(VTKViewer_GeometryFilter, vtkGeometryFilter)
   *  \brief VTK type revision macros.
   */
  vtkTypeRevisionMacro(VTKViewer_GeometryFilter, vtkGeometryFilter);
  /*! \fn void SetInside(int theShowInside)
   * \brief Sets \a myShowInside flag. \a myShowInside is changed, call this->Modified().
   * \param theShowInside - used for changing value of \a myShowInside variable.
   */
  void SetInside(int theShowInside);
  /*! \fn int GetInside()
   * \brief Return value of \a myShowInside
   * \retval myShowInside
   */
  int GetInside();
  /*! \fn void SetWireframeMode(int theIsWireframeMode)
   * \brief Sets \a myIsWireframeMode flag. \a myIsWireframeMode is changed, call this->Modified().
   * \param theIsWireframeMode - used for changing value of \a myIsWireframeMode variable.
   */
  void SetWireframeMode(int theIsWireframeMode);
  /*! \fn int GetWireframeMode()
   * \brief Return value of \a myIsWireframeMode
   * \retval myIsWireframeMode
   */
  int GetWireframeMode();
  /*! \fn void SetStoreMapping(int theStoreMapping);
   * \brief Sets \a myStoreMapping flag and call this->Modified()
   * \param theStoreMapping - used for changing value of \a myStoreMapping variable.
   */
  void SetStoreMapping(int theStoreMapping);
  /*! \fn int GetStoreMapping()
   * \brief Return value of \a myStoreMapping
   * \retval myStoreMapping
   */
  int GetStoreMapping();
  /*! \fn virtual vtkIdType GetNodeObjId(int theVtkID)
   * \brief Return input value theVtkID
   * \retval theVtkID
   */
  virtual vtkIdType GetNodeObjId(int theVtkID) { return theVtkID;}
  /*! \fn virtual vtkIdType GetElemObjId(int theVtkID);
   * \brief Return object ID by VTK ID cell 
   * \retval myVTK2ObjIds[theVtkID]
   */
  virtual vtkIdType GetElemObjId(int theVtkID);

  virtual void SetQuadraticArcMode(bool theFlag);
  virtual bool GetQuadraticArcMode() const;

  virtual void   SetQuadraticArcAngle(vtkFloatingPointType theMaxAngle);
  virtual vtkFloatingPointType GetQuadraticArcAngle() const;


protected:
  /*! \fn VTKViewer_GeometryFilter();
   * \brief Constructor which sets \a myShowInside = 0 and \a myStoreMapping = 0
   */
  VTKViewer_GeometryFilter();
  /*! \fn ~VTKViewer_GeometryFilter();
   * \brief Destructor.
   */
  ~VTKViewer_GeometryFilter();

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

  //special cases for performance
  
  /*! \fn void UnstructuredGridExecute();
   * \brief Filter culculation method for data object type is VTK_UNSTRUCTURED_GRID.
   */
  int UnstructuredGridExecute (vtkDataSet *, vtkPolyData *, vtkInformation *);


  void BuildArcedPolygon(vtkIdType cellId, vtkUnstructuredGrid* input, vtkPolyData *output, bool triangulate = false);
    
private:
  typedef std::vector<vtkIdType> TVectorId;

private:
  TVectorId myVTK2ObjIds;
  int       myShowInside;
  int       myStoreMapping;
  int       myIsWireframeMode;

  vtkFloatingPointType    myMaxArcAngle;   // define max angle for mesh 2D quadratic element in the degrees
  bool      myIsBuildArc;     // flag for representation 2D quadratic element as arked polygon
};

#ifdef WIN32
#pragma warning ( default:4251 )
#endif

#endif
