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/*===========================================================================*\
 *                                                                           *             
 *   $Revision$                                                         *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/


#ifndef OPENMESH_MESHCHECKER_HH
#define OPENMESH_MESHCHECKER_HH


//== INCLUDES =================================================================


#include <OpenMesh/Core/System/config.h>
#include <OpenMesh/Core/System/omstream.hh>
#include <OpenMesh/Core/Utils/GenProg.hh>
#include <OpenMesh/Core/Mesh/Attributes.hh>
#include <ostream>


//== NAMESPACES ===============================================================


namespace OpenMesh {
namespace Utils {

//== CLASS DEFINITION =========================================================

	      
/** Check integrity of mesh.
 *
 *  This class provides several functions to check the integrity of a mesh.
 */
template <class Mesh>
class MeshCheckerT
{
public:
   
  /// constructor
  MeshCheckerT(const Mesh& _mesh) : mesh_(_mesh) {}
 
  /// destructor
  ~MeshCheckerT() {}


  /// what should be checked?
  enum CheckTargets
  {
    CHECK_EDGES     = 1,
    CHECK_VERTICES  = 2,
    CHECK_FACES     = 4,
    CHECK_ALL       = 255
  };

  
  /// check it, return true iff ok
  bool check( unsigned int _targets=CHECK_ALL,
	      std::ostream&  _os= omerr());


private:

  bool is_deleted(typename Mesh::VertexHandle _vh) 
  { return (mesh_.has_vertex_status() ? mesh_.status(_vh).deleted() : false); }

  bool is_deleted(typename Mesh::EdgeHandle _eh) 
  { return (mesh_.has_edge_status() ? mesh_.status(_eh).deleted() : false); }

  bool is_deleted(typename Mesh::FaceHandle _fh) 
  { return (mesh_.has_face_status() ? mesh_.status(_fh).deleted() : false); }


  // ref to mesh
  const Mesh&  mesh_;
};


//=============================================================================
} // namespace Utils
} // namespace OpenMesh
//=============================================================================
#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_MESHCHECKER_C)
#define OPENMESH_MESHCHECKER_TEMPLATES
#include "MeshCheckerT.cc"
#endif
//=============================================================================
#endif // OPENMESH_MESHCHECKER_HH defined
//=============================================================================

