| 1 | // Author: Kirill Gavrilov |
| 2 | // Copyright (c) 2016-2019 OPEN CASCADE SAS |
| 3 | // |
| 4 | // This file is part of Open CASCADE Technology software library. |
| 5 | // |
| 6 | // This library is free software; you can redistribute it and/or modify it under |
| 7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 8 | // by the Free Software Foundation, with special exception defined in the file |
| 9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 10 | // distribution for complete text of the license and disclaimer of any warranty. |
| 11 | // |
| 12 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 13 | // commercial license or contractual agreement. |
| 14 | |
| 15 | #include <RWGltf_CafReader.hxx> |
| 16 | |
| 17 | #include "RWGltf_GltfJsonParser.pxx" |
| 18 | #include <RWGltf_TriangulationReader.hxx> |
| 19 | |
| 20 | #include <BRep_Builder.hxx> |
| 21 | #include <BRep_Tool.hxx> |
| 22 | #include <Message.hxx> |
| 23 | #include <Message_Messenger.hxx> |
| 24 | #include <Message_ProgressSentry.hxx> |
| 25 | #include <OSD_OpenFile.hxx> |
| 26 | #include <OSD_ThreadPool.hxx> |
| 27 | |
| 28 | #include <fstream> |
| 29 | |
| 30 | IMPLEMENT_STANDARD_RTTIEXT(RWGltf_CafReader, RWMesh_CafReader) |
| 31 | |
| 32 | //! Functor for parallel execution. |
| 33 | class RWGltf_CafReader::CafReader_GltfReaderFunctor |
| 34 | { |
| 35 | public: |
| 36 | |
| 37 | struct GltfReaderTLS |
| 38 | { |
| 39 | Handle(RWGltf_PrimitiveArrayReader) Reader; |
| 40 | }; |
| 41 | |
| 42 | //! Main constructor. |
| 43 | CafReader_GltfReaderFunctor (RWGltf_CafReader* myCafReader, |
| 44 | NCollection_Vector<TopoDS_Face>& theFaceList, |
| 45 | Message_ProgressSentry& theSentry, |
| 46 | const OSD_ThreadPool::Launcher& theThreadPool, |
| 47 | const TCollection_AsciiString& theErrPrefix) |
| 48 | : myCafReader (myCafReader), |
| 49 | myFaceList (&theFaceList), |
| 50 | mySentry (&theSentry), |
| 51 | myErrPrefix (theErrPrefix), |
| 52 | myThreadPool(theThreadPool), |
| 53 | myTlsData (theThreadPool.LowerThreadIndex(), theThreadPool.UpperThreadIndex()) |
| 54 | { |
| 55 | // |
| 56 | } |
| 57 | |
| 58 | //! Execute task for a face with specified index. |
| 59 | void operator() (int theThreadIndex, |
| 60 | int theFaceIndex) const |
| 61 | { |
| 62 | GltfReaderTLS& aTlsData = myTlsData.ChangeValue (theThreadIndex); |
| 63 | if (aTlsData.Reader.IsNull()) |
| 64 | { |
| 65 | aTlsData.Reader = myCafReader->createMeshReaderContext(); |
| 66 | aTlsData.Reader->SetErrorPrefix (myErrPrefix); |
| 67 | aTlsData.Reader->SetCoordinateSystemConverter (myCafReader->myCoordSysConverter); |
| 68 | } |
| 69 | |
| 70 | TopLoc_Location aDummyLoc; |
| 71 | TopoDS_Face& aFace = myFaceList->ChangeValue (theFaceIndex); |
| 72 | Handle(RWGltf_GltfLatePrimitiveArray) aLateData = Handle(RWGltf_GltfLatePrimitiveArray)::DownCast (BRep_Tool::Triangulation (aFace, aDummyLoc)); |
| 73 | Handle(Poly_Triangulation) aPolyData = aTlsData.Reader->Load (aLateData); |
| 74 | BRep_Builder aBuilder; |
| 75 | aBuilder.UpdateFace (aFace, aPolyData); |
| 76 | |
| 77 | if (myThreadPool.HasThreads()) |
| 78 | { |
| 79 | Standard_Mutex::Sentry aLock (&myMutex); |
| 80 | mySentry->Next(); |
| 81 | } |
| 82 | else |
| 83 | { |
| 84 | mySentry->Next(); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | private: |
| 89 | |
| 90 | RWGltf_CafReader* myCafReader; |
| 91 | NCollection_Vector<TopoDS_Face>* myFaceList; |
| 92 | Message_ProgressSentry* mySentry; |
| 93 | TCollection_AsciiString myErrPrefix; |
| 94 | mutable Standard_Mutex myMutex; |
| 95 | const OSD_ThreadPool::Launcher& myThreadPool; |
| 96 | mutable NCollection_Array1<GltfReaderTLS> |
| 97 | myTlsData; |
| 98 | |
| 99 | }; |
| 100 | |
| 101 | //================================================================ |
| 102 | // Function : Constructor |
| 103 | // Purpose : |
| 104 | //================================================================ |
| 105 | RWGltf_CafReader::RWGltf_CafReader() |
| 106 | : myToParallel (false) |
| 107 | { |
| 108 | myCoordSysConverter.SetInputLengthUnit (1.0); // glTF defines model in meters |
| 109 | myCoordSysConverter.SetInputCoordinateSystem (RWMesh_CoordinateSystem_glTF); |
| 110 | } |
| 111 | |
| 112 | //================================================================ |
| 113 | // Function : performMesh |
| 114 | // Purpose : |
| 115 | //================================================================ |
| 116 | Standard_Boolean RWGltf_CafReader::performMesh (const TCollection_AsciiString& theFile, |
| 117 | const Handle(Message_ProgressIndicator)& theProgress, |
| 118 | const Standard_Boolean theToProbe) |
| 119 | { |
| 120 | std::ifstream aFile; |
| 121 | OSD_OpenStream (aFile, theFile.ToCString(), std::ios::in | std::ios::binary); |
| 122 | if (!aFile.is_open() |
| 123 | || !aFile.good()) |
| 124 | { |
| 125 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is not found!", Message_Fail); |
| 126 | return false; |
| 127 | } |
| 128 | |
| 129 | bool isBinaryFile = false; |
| 130 | char aGlbHeader[12] = {}; |
| 131 | aFile.read (aGlbHeader, sizeof(aGlbHeader)); |
| 132 | int64_t aBinBodyOffset = 0; |
| 133 | int64_t aBinBodyLen = 0; |
| 134 | int64_t aJsonBodyOffset = 0; |
| 135 | int64_t aJsonBodyLen = 0; |
| 136 | if (::strncmp (aGlbHeader, "glTF", 4) == 0) |
| 137 | { |
| 138 | isBinaryFile = true; |
| 139 | const uint32_t* aVer = (const uint32_t* )(aGlbHeader + 4); |
| 140 | const uint32_t* aLen = (const uint32_t* )(aGlbHeader + 8); |
| 141 | if (*aVer == 1) |
| 142 | { |
| 143 | if (*aLen < 20) |
| 144 | { |
| 145 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' has broken glTF format!", Message_Fail); |
| 146 | return false; |
| 147 | } |
| 148 | |
| 149 | char aHeader1[8] = {}; |
| 150 | aFile.read (aHeader1, sizeof(aHeader1)); |
| 151 | |
| 152 | const uint32_t* aSceneLen = (const uint32_t* )(aHeader1 + 0); |
| 153 | const uint32_t* aSceneFormat = (const uint32_t* )(aHeader1 + 4); |
| 154 | aJsonBodyOffset = 20; |
| 155 | aJsonBodyLen = int64_t(*aSceneLen); |
| 156 | |
| 157 | aBinBodyOffset = aJsonBodyOffset + aJsonBodyLen; |
| 158 | aBinBodyLen = int64_t(*aLen) - aBinBodyOffset; |
| 159 | if (*aSceneFormat != 0) |
| 160 | { |
| 161 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unsupported Scene format!", Message_Fail); |
| 162 | return false; |
| 163 | } |
| 164 | } |
| 165 | else //if (*aVer == 2) |
| 166 | { |
| 167 | if (*aVer != 2) |
| 168 | { |
| 169 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unknown version " + int(*aVer) + "!", Message_Warning); |
| 170 | } |
| 171 | |
| 172 | for (int aChunkIter = 0; !aFile.eof() && aChunkIter < 2; ++aChunkIter) |
| 173 | { |
| 174 | char aChunkHeader2[8] = {}; |
| 175 | if (int64_t(aFile.tellg()) + int64_t(sizeof(aChunkHeader2)) > int64_t(aLen)) |
| 176 | { |
| 177 | break; |
| 178 | } |
| 179 | |
| 180 | aFile.read (aChunkHeader2, sizeof(aChunkHeader2)); |
| 181 | if (!aFile.good()) |
| 182 | { |
| 183 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unsupported format!", Message_Fail); |
| 184 | return false; |
| 185 | } |
| 186 | |
| 187 | const uint32_t* aChunkLen = (const uint32_t* )(aChunkHeader2 + 0); |
| 188 | const uint32_t* aChunkType = (const uint32_t* )(aChunkHeader2 + 4); |
| 189 | if (*aChunkType == 0x4E4F534A) |
| 190 | { |
| 191 | aJsonBodyOffset = int64_t(aFile.tellg()); |
| 192 | aJsonBodyLen = int64_t(*aChunkLen); |
| 193 | } |
| 194 | else if (*aChunkType == 0x004E4942) |
| 195 | { |
| 196 | aBinBodyOffset = int64_t(aFile.tellg()); |
| 197 | aBinBodyLen = int64_t(*aChunkLen); |
| 198 | } |
| 199 | if (*aChunkLen != 0) |
| 200 | { |
| 201 | aFile.seekg (*aChunkLen, std::ios_base::cur); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | aFile.seekg ((std::streamoff )aJsonBodyOffset, std::ios_base::beg); |
| 206 | } |
| 207 | } |
| 208 | else |
| 209 | { |
| 210 | aFile.seekg (0, std::ios_base::beg); |
| 211 | } |
| 212 | |
| 213 | TCollection_AsciiString anErrPrefix = TCollection_AsciiString ("File '") + theFile + "' defines invalid glTF!\n"; |
| 214 | RWGltf_GltfJsonParser aDoc (myRootShapes); |
| 215 | aDoc.SetFilePath (theFile); |
| 216 | aDoc.SetProbeHeader (theToProbe); |
| 217 | aDoc.SetExternalFiles (myExternalFiles); |
| 218 | aDoc.SetMetadata (myMetadata); |
| 219 | aDoc.SetErrorPrefix (anErrPrefix); |
| 220 | aDoc.SetCoordinateSystemConverter (myCoordSysConverter); |
| 221 | if (!theToProbe) |
| 222 | { |
| 223 | aDoc.SetAttributeMap (myAttribMap); |
| 224 | } |
| 225 | if (isBinaryFile) |
| 226 | { |
| 227 | aDoc.SetBinaryFormat (aBinBodyOffset, aBinBodyLen); |
| 228 | } |
| 229 | |
| 230 | #ifdef HAVE_RAPIDJSON |
| 231 | rapidjson::ParseResult aRes; |
| 232 | rapidjson::IStreamWrapper aFileStream (aFile); |
| 233 | if (isBinaryFile) |
| 234 | { |
| 235 | aRes = aDoc.ParseStream<rapidjson::kParseStopWhenDoneFlag, rapidjson::UTF8<>, rapidjson::IStreamWrapper> (aFileStream); |
| 236 | } |
| 237 | else |
| 238 | { |
| 239 | aRes = aDoc.ParseStream (aFileStream); |
| 240 | } |
| 241 | if (aRes.IsError()) |
| 242 | { |
| 243 | if (aRes.Code() == rapidjson::kParseErrorDocumentEmpty) |
| 244 | { |
| 245 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is empty!", Message_Fail); |
| 246 | return false; |
| 247 | } |
| 248 | TCollection_AsciiString anErrDesc (RWGltf_GltfJsonParser::FormatParseError (aRes.Code())); |
| 249 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' defines invalid JSON document!\n" |
| 250 | + anErrDesc + ".", Message_Fail); |
| 251 | return false; |
| 252 | } |
| 253 | #endif |
| 254 | |
| 255 | if (!aDoc.Parse (theProgress)) |
| 256 | { |
| 257 | return false; |
| 258 | } |
| 259 | |
| 260 | if (!theToProbe |
| 261 | && !readLateData (aDoc.FaceList(), theFile, theProgress)) |
| 262 | { |
| 263 | return false; |
| 264 | } |
| 265 | |
| 266 | return true; |
| 267 | } |
| 268 | |
| 269 | //================================================================ |
| 270 | // Function : createMeshReaderContext |
| 271 | // Purpose : |
| 272 | //================================================================ |
| 273 | Handle(RWGltf_PrimitiveArrayReader) RWGltf_CafReader::createMeshReaderContext() |
| 274 | { |
| 275 | Handle(RWGltf_TriangulationReader) aReader = new RWGltf_TriangulationReader(); |
| 276 | return aReader; |
| 277 | } |
| 278 | |
| 279 | //================================================================ |
| 280 | // Function : readLateData |
| 281 | // Purpose : |
| 282 | //================================================================ |
| 283 | Standard_Boolean RWGltf_CafReader::readLateData (NCollection_Vector<TopoDS_Face>& theFaces, |
| 284 | const TCollection_AsciiString& theFile, |
| 285 | const Handle(Message_ProgressIndicator)& theProgress) |
| 286 | { |
| 287 | Message_ProgressSentry aPSentryTris (theProgress, "Loading glTF triangulation", 0, Max (1, theFaces.Size()), 1); |
| 288 | const Handle(OSD_ThreadPool)& aThreadPool = OSD_ThreadPool::DefaultPool(); |
| 289 | const int aNbThreads = myToParallel ? Min (theFaces.Size(), aThreadPool->NbDefaultThreadsToLaunch()) : 1; |
| 290 | OSD_ThreadPool::Launcher aLauncher (*aThreadPool, aNbThreads); |
| 291 | |
| 292 | CafReader_GltfReaderFunctor aFunctor (this, theFaces, aPSentryTris, aLauncher, |
| 293 | TCollection_AsciiString ("File '") + theFile + "' defines invalid glTF!\n"); |
| 294 | aLauncher.Perform (theFaces.Lower(), theFaces.Upper() + 1, aFunctor); |
| 295 | return Standard_True; |
| 296 | } |