text: #ifndef RADIUMENGINE_MESH_CONVERT_HPP
  #define RADIUMENGINE_MESH_CONVERT_HPP
  
  #include <Core/RaCore.hpp>
  
  namespace Ra
  {
  namespace Core
  {
  
  // Forward declaration
  class Index;
  struct TriangleMesh;
  class Dcel;
  
  struct Twin
  {
      Twin();
      Twin( const uint i, const uint j );
  
      bool operator==( const Twin& twin ) const;
      bool operator< ( const Twin& twin ) const;
  
      uint m_id[2];
  };
  
  RA_CORE_API void convert( const TriangleMesh& mesh, Dcel& dcel );
  RA_CORE_API void convert( const Dcel& dcel, TriangleMesh& mesh );
  
  } // namespace Core
  } // namespace Ra
  
  #endif // RADIUMENGINE_MESH_CONVERT_HPP
  