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File indexing completed on 2025-01-18 10:04:42
0001 // Author: Kirill Gavrilov 0002 // Copyright (c) 2019 OPEN CASCADE SAS 0003 // 0004 // This file is part of Open CASCADE Technology software library. 0005 // 0006 // This library is free software; you can redistribute it and/or modify it under 0007 // the terms of the GNU Lesser General Public License version 2.1 as published 0008 // by the Free Software Foundation, with special exception defined in the file 0009 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 0010 // distribution for complete text of the license and disclaimer of any warranty. 0011 // 0012 // Alternatively, this file may be used under the terms of Open CASCADE 0013 // commercial license or contractual agreement. 0014 0015 #ifndef _RWGltf_TriangulationReader_HeaderFile 0016 #define _RWGltf_TriangulationReader_HeaderFile 0017 0018 #include <RWMesh_TriangulationReader.hxx> 0019 #include <RWGltf_GltfAccessor.hxx> 0020 #include <RWGltf_GltfArrayType.hxx> 0021 0022 class RWGltf_GltfLatePrimitiveArray; 0023 class RWGltf_GltfPrimArrayData; 0024 0025 //! RWMesh_TriangulationReader implementation creating Poly_Triangulation. 0026 class RWGltf_TriangulationReader : public RWMesh_TriangulationReader 0027 { 0028 DEFINE_STANDARD_RTTIEXT(RWGltf_TriangulationReader, RWMesh_TriangulationReader) 0029 public: 0030 0031 //! Empty constructor. 0032 Standard_EXPORT RWGltf_TriangulationReader(); 0033 0034 //! Loads only primitive arrays saved as stream buffer 0035 //! (it is primarily glTF data encoded in base64 saved to temporary buffer during glTF file reading). 0036 Standard_EXPORT bool LoadStreamData (const Handle(RWMesh_TriangulationSource)& theSourceMesh, 0037 const Handle(Poly_Triangulation)& theDestMesh) const; 0038 0039 protected: 0040 0041 //! Reports error. 0042 Standard_EXPORT virtual void reportError (const TCollection_AsciiString& theText) const; 0043 0044 //! Loads only primitive arrays from file data. 0045 //! @param theSourceMesh source triangulation 0046 //! @param theDestMesh triangulation to be modified 0047 //! @param theFileSystem shared file system to read from 0048 //! Note: this method skips "stream data" that should be loaded by LoadStreamData() call. 0049 Standard_EXPORT virtual bool load (const Handle(RWMesh_TriangulationSource)& theSourceMesh, 0050 const Handle(Poly_Triangulation)& theDestMesh, 0051 const Handle(OSD_FileSystem)& theFileSystem) const Standard_OVERRIDE; 0052 0053 //! Performs additional actions to finalize data loading. 0054 //! @param theSourceMesh source triangulation 0055 //! @param theDestMesh triangulation to be modified 0056 Standard_EXPORT virtual bool finalizeLoading (const Handle(RWMesh_TriangulationSource)& theSourceMesh, 0057 const Handle(Poly_Triangulation)& theDestMesh) const Standard_OVERRIDE; 0058 0059 //! Loads only primitive arrays saved as stream buffer 0060 //! (it is primarily glTF data encoded in base64 saved to temporary buffer during glTF file reading). 0061 //! @param theSourceMesh source triangulation 0062 //! @param theDestMesh triangulation to be modified 0063 //! @param theToResetStream if TRUE reset input stream data buffer after its loading. 0064 Standard_EXPORT bool loadStreamData (const Handle(RWMesh_TriangulationSource)& theSourceMesh, 0065 const Handle(Poly_Triangulation)& theDestMesh, 0066 bool theToResetStream = true) const; 0067 0068 //! Reads primitive array from stream data. 0069 //! @param theSourceGltfMesh source glTF triangulation 0070 //! @param theGltfData primitive array element (stream data should not be NULL) 0071 //! @param theDestMesh triangulation to be modified 0072 Standard_EXPORT bool readStreamData (const Handle(RWGltf_GltfLatePrimitiveArray)& theSourceGltfMesh, 0073 const RWGltf_GltfPrimArrayData& theGltfData, 0074 const Handle(Poly_Triangulation)& theDestMesh) const; 0075 0076 //! Reads primitive array from file data. 0077 //! @param theSourceGltfMesh source glTF triangulation 0078 //! @param theGltfData primitive array element (Uri of file stream should not be empty) 0079 //! @param theDestMesh triangulation to be modified 0080 //! @param theFileSystem shared file system to read from 0081 Standard_EXPORT bool readFileData (const Handle(RWGltf_GltfLatePrimitiveArray)& theSourceGltfMesh, 0082 const RWGltf_GltfPrimArrayData& theGltfData, 0083 const Handle(Poly_Triangulation)& theDestMesh, 0084 const Handle(OSD_FileSystem)& theFileSystem) const; 0085 0086 //! Fills triangulation data and ignore non-triangulation primitives. 0087 //! @param theSourceGltfMesh source glTF triangulation 0088 //! @param theDestMesh triangulation to be modified 0089 //! @param theStream input stream to read from 0090 //! @param theAccessor buffer accessor 0091 //! @param theType array type 0092 //! @return FALSE on error 0093 Standard_EXPORT virtual bool readBuffer (const Handle(RWGltf_GltfLatePrimitiveArray)& theSourceGltfMesh, 0094 const Handle(Poly_Triangulation)& theDestMesh, 0095 std::istream& theStream, 0096 const RWGltf_GltfAccessor& theAccessor, 0097 RWGltf_GltfArrayType theType) const; 0098 0099 //! Reads primitive array from file data compressed in Draco format. 0100 //! @param theSourceGltfMesh source glTF triangulation 0101 //! @param theGltfData primitive array element (Uri of file stream should not be empty) 0102 //! @param theDestMesh triangulation to be modified 0103 //! @param theFileSystem shared file system to read from 0104 Standard_EXPORT virtual bool readDracoBuffer (const Handle(RWGltf_GltfLatePrimitiveArray)& theSourceGltfMesh, 0105 const RWGltf_GltfPrimArrayData& theGltfData, 0106 const Handle(Poly_Triangulation)& theDestMesh, 0107 const Handle(OSD_FileSystem)& theFileSystem) const; 0108 0109 protected: 0110 0111 Handle(Poly_Triangulation) myTriangulation; 0112 0113 }; 0114 0115 #endif // _RWGltf_TriangulationReader_HeaderFile
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