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 // Author: Kirill Gavrilov
 // Copyright (c) 2016-2019 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _RWGltf_CafReader_HeaderFile
 #define _RWGltf_CafReader_HeaderFile
 
 #include <NCollection_Vector.hxx>
 #include <RWMesh_CafReader.hxx>
 #include <TopoDS_Face.hxx>
 
 class RWMesh_TriangulationReader;
 
 //! The glTF (GL Transmission Format) mesh reader into XDE document.
 class RWGltf_CafReader : public RWMesh_CafReader
 {
   DEFINE_STANDARD_RTTIEXT(RWGltf_CafReader, RWMesh_CafReader)
 public:
 
   //! Empty constructor.
   Standard_EXPORT RWGltf_CafReader();
 
   //! Return TRUE if multithreaded optimizations are allowed; FALSE by default.
   bool ToParallel() const { return myToParallel; }
 
   //! Setup multithreaded execution.
   void SetParallel (bool theToParallel) { myToParallel = theToParallel; }
 
   //! Return TRUE if Nodes without Geometry should be ignored, TRUE by default.
   bool ToSkipEmptyNodes() { return myToSkipEmptyNodes; }
 
   //! Set flag to ignore nodes without Geometry.
   void SetSkipEmptyNodes (bool theToSkip) { myToSkipEmptyNodes = theToSkip; }
 
   //! Return TRUE if all scenes in the document should be loaded, FALSE by default which means only main (default) scene will be loaded.
   bool ToLoadAllScenes() const { return myToLoadAllScenes; }
 
   //! Set flag to flag to load all scenes in the document, FALSE by default which means only main (default) scene will be loaded.
   void SetLoadAllScenes (bool theToLoadAll) { myToLoadAllScenes = theToLoadAll; }
 
   //! Set flag to use Mesh name in case if Node name is empty, TRUE by default.
   bool ToUseMeshNameAsFallback() { return myUseMeshNameAsFallback; }
 
   //! Set flag to use Mesh name in case if Node name is empty.
   void SetMeshNameAsFallback (bool theToFallback) { myUseMeshNameAsFallback = theToFallback; }
 
   //! Return flag to fill in triangulation using double or single precision; FALSE by default.
   bool IsDoublePrecision() const { return myIsDoublePrecision; }
 
   //! Set flag to fill in triangulation using double or single precision.
   void SetDoublePrecision (bool theIsDouble) { myIsDoublePrecision = theIsDouble; }
 
   //! Returns TRUE if data loading should be skipped and can be performed later; FALSE by default.
   bool ToSkipLateDataLoading() { return myToSkipLateDataLoading; }
 
   //! Sets flag to skip data loading.
   void SetToSkipLateDataLoading (bool theToSkip) { myToSkipLateDataLoading = theToSkip; }
 
   //! Returns TRUE if data should be loaded into itself without its transfering to new structure.
   //! It allows to keep information about deferred storage to load/unload this data later.
   //! TRUE by default.
   bool ToKeepLateData() { return myToKeepLateData; }
 
   //! Sets flag to keep information about deferred storage to load/unload data later.
   void SetToKeepLateData (bool theToKeep) { myToKeepLateData = theToKeep; }
 
   //! Returns TRUE if additional debug information should be print; FALSE by default.
   bool ToPrintDebugMessages() const { return myToPrintDebugMessages; }
 
   //! Sets flag to print debug information.
   void SetToPrintDebugMessages (const Standard_Boolean theToPrint) { myToPrintDebugMessages = theToPrint; }
 
 protected:
 
   //! Read the mesh from specified file.
   Standard_EXPORT virtual Standard_Boolean performMesh (std::istream& theStream,
                                                         const TCollection_AsciiString& theFile,
                                                         const Message_ProgressRange& theProgress,
                                                         const Standard_Boolean theToProbe) Standard_OVERRIDE;
 
   //! Create primitive array reader context.
   //! Can be overridden by sub-class to read triangulation into application-specific data structures instead of Poly_Triangulation.
   //! Default implementation creates RWGltf_TriangulationReader.
   Standard_EXPORT virtual Handle(RWMesh_TriangulationReader) createMeshReaderContext() const;
 
   //! Read late data from RWGltf_GltfLatePrimitiveArray stored as Poly_Triangulation within faces.
   Standard_EXPORT virtual Standard_Boolean readLateData (NCollection_Vector<TopoDS_Face>& theFaces,
                                                          const TCollection_AsciiString& theFile,
                                                          const Message_ProgressRange& theProgress);
 
   //! Set reader for each late data.
   Standard_EXPORT void updateLateDataReader (NCollection_Vector<TopoDS_Face>& theFaces,
                                              const Handle(RWMesh_TriangulationReader)& theReader) const;
 
 protected:
 
   class CafReader_GltfBaseLoadingFunctor;
   class CafReader_GltfFullDataLoadingFunctor;
   class CafReader_GltfStreamDataLoadingFunctor;
 
 protected:
 
   Standard_Boolean myToParallel;            //!< flag to use multithreading; FALSE by default
   Standard_Boolean myToSkipEmptyNodes;      //!< ignore nodes without Geometry; TRUE by default
   Standard_Boolean myToLoadAllScenes;       //!< flag to load all scenes in the document, FALSE by default
   Standard_Boolean myUseMeshNameAsFallback; //!< flag to use Mesh name in case if Node name is empty, TRUE by default
   Standard_Boolean myIsDoublePrecision;     //!< flag to fill in triangulation using single or double precision
   Standard_Boolean myToSkipLateDataLoading; //!< flag to skip triangulation loading
   Standard_Boolean myToKeepLateData;        //!< flag to keep information about deferred storage to load/unload triangulation later
   Standard_Boolean myToPrintDebugMessages;  //!< flag to print additional debug information
 
 };
 
 #endif // _RWGltf_CafReader_HeaderFile

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