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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() |
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106 | : myToParallel (false), |
107 | myToSkipEmptyNodes (true), |
108 | myUseMeshNameAsFallback (true) |
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109 | { |
110 | myCoordSysConverter.SetInputLengthUnit (1.0); // glTF defines model in meters |
111 | myCoordSysConverter.SetInputCoordinateSystem (RWMesh_CoordinateSystem_glTF); |
112 | } |
113 | |
114 | //================================================================ |
115 | // Function : performMesh |
116 | // Purpose : |
117 | //================================================================ |
118 | Standard_Boolean RWGltf_CafReader::performMesh (const TCollection_AsciiString& theFile, |
119 | const Handle(Message_ProgressIndicator)& theProgress, |
120 | const Standard_Boolean theToProbe) |
121 | { |
122 | std::ifstream aFile; |
123 | OSD_OpenStream (aFile, theFile.ToCString(), std::ios::in | std::ios::binary); |
124 | if (!aFile.is_open() |
125 | || !aFile.good()) |
126 | { |
127 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is not found!", Message_Fail); |
128 | return false; |
129 | } |
130 | |
131 | bool isBinaryFile = false; |
132 | char aGlbHeader[12] = {}; |
133 | aFile.read (aGlbHeader, sizeof(aGlbHeader)); |
134 | int64_t aBinBodyOffset = 0; |
135 | int64_t aBinBodyLen = 0; |
136 | int64_t aJsonBodyOffset = 0; |
137 | int64_t aJsonBodyLen = 0; |
138 | if (::strncmp (aGlbHeader, "glTF", 4) == 0) |
139 | { |
140 | isBinaryFile = true; |
141 | const uint32_t* aVer = (const uint32_t* )(aGlbHeader + 4); |
142 | const uint32_t* aLen = (const uint32_t* )(aGlbHeader + 8); |
143 | if (*aVer == 1) |
144 | { |
145 | if (*aLen < 20) |
146 | { |
147 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' has broken glTF format!", Message_Fail); |
148 | return false; |
149 | } |
150 | |
151 | char aHeader1[8] = {}; |
152 | aFile.read (aHeader1, sizeof(aHeader1)); |
153 | |
154 | const uint32_t* aSceneLen = (const uint32_t* )(aHeader1 + 0); |
155 | const uint32_t* aSceneFormat = (const uint32_t* )(aHeader1 + 4); |
156 | aJsonBodyOffset = 20; |
157 | aJsonBodyLen = int64_t(*aSceneLen); |
158 | |
159 | aBinBodyOffset = aJsonBodyOffset + aJsonBodyLen; |
160 | aBinBodyLen = int64_t(*aLen) - aBinBodyOffset; |
161 | if (*aSceneFormat != 0) |
162 | { |
163 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unsupported Scene format!", Message_Fail); |
164 | return false; |
165 | } |
166 | } |
167 | else //if (*aVer == 2) |
168 | { |
169 | if (*aVer != 2) |
170 | { |
171 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unknown version " + int(*aVer) + "!", Message_Warning); |
172 | } |
173 | |
174 | for (int aChunkIter = 0; !aFile.eof() && aChunkIter < 2; ++aChunkIter) |
175 | { |
176 | char aChunkHeader2[8] = {}; |
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177 | if (int64_t(aFile.tellg()) + int64_t(sizeof(aChunkHeader2)) > int64_t(*aLen)) |
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178 | { |
179 | break; |
180 | } |
181 | |
182 | aFile.read (aChunkHeader2, sizeof(aChunkHeader2)); |
183 | if (!aFile.good()) |
184 | { |
185 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is written using unsupported format!", Message_Fail); |
186 | return false; |
187 | } |
188 | |
189 | const uint32_t* aChunkLen = (const uint32_t* )(aChunkHeader2 + 0); |
190 | const uint32_t* aChunkType = (const uint32_t* )(aChunkHeader2 + 4); |
191 | if (*aChunkType == 0x4E4F534A) |
192 | { |
193 | aJsonBodyOffset = int64_t(aFile.tellg()); |
194 | aJsonBodyLen = int64_t(*aChunkLen); |
195 | } |
196 | else if (*aChunkType == 0x004E4942) |
197 | { |
198 | aBinBodyOffset = int64_t(aFile.tellg()); |
199 | aBinBodyLen = int64_t(*aChunkLen); |
200 | } |
201 | if (*aChunkLen != 0) |
202 | { |
203 | aFile.seekg (*aChunkLen, std::ios_base::cur); |
204 | } |
205 | } |
206 | |
207 | aFile.seekg ((std::streamoff )aJsonBodyOffset, std::ios_base::beg); |
208 | } |
209 | } |
210 | else |
211 | { |
212 | aFile.seekg (0, std::ios_base::beg); |
213 | } |
214 | |
215 | TCollection_AsciiString anErrPrefix = TCollection_AsciiString ("File '") + theFile + "' defines invalid glTF!\n"; |
216 | RWGltf_GltfJsonParser aDoc (myRootShapes); |
217 | aDoc.SetFilePath (theFile); |
218 | aDoc.SetProbeHeader (theToProbe); |
219 | aDoc.SetExternalFiles (myExternalFiles); |
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220 | aDoc.SetMetadata (myMetadata); |
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221 | aDoc.SetErrorPrefix (anErrPrefix); |
222 | aDoc.SetCoordinateSystemConverter (myCoordSysConverter); |
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223 | aDoc.SetSkipEmptyNodes (myToSkipEmptyNodes); |
224 | aDoc.SetMeshNameAsFallback (myUseMeshNameAsFallback); |
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225 | if (!theToProbe) |
226 | { |
227 | aDoc.SetAttributeMap (myAttribMap); |
228 | } |
229 | if (isBinaryFile) |
230 | { |
231 | aDoc.SetBinaryFormat (aBinBodyOffset, aBinBodyLen); |
232 | } |
233 | |
234 | #ifdef HAVE_RAPIDJSON |
235 | rapidjson::ParseResult aRes; |
236 | rapidjson::IStreamWrapper aFileStream (aFile); |
237 | if (isBinaryFile) |
238 | { |
239 | aRes = aDoc.ParseStream<rapidjson::kParseStopWhenDoneFlag, rapidjson::UTF8<>, rapidjson::IStreamWrapper> (aFileStream); |
240 | } |
241 | else |
242 | { |
243 | aRes = aDoc.ParseStream (aFileStream); |
244 | } |
245 | if (aRes.IsError()) |
246 | { |
247 | if (aRes.Code() == rapidjson::kParseErrorDocumentEmpty) |
248 | { |
249 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is empty!", Message_Fail); |
250 | return false; |
251 | } |
252 | TCollection_AsciiString anErrDesc (RWGltf_GltfJsonParser::FormatParseError (aRes.Code())); |
253 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' defines invalid JSON document!\n" |
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254 | + anErrDesc + " [at offset " + (int )aRes.Offset() + "].", Message_Fail); |
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255 | return false; |
256 | } |
257 | #endif |
258 | |
259 | if (!aDoc.Parse (theProgress)) |
260 | { |
261 | return false; |
262 | } |
263 | |
264 | if (!theToProbe |
265 | && !readLateData (aDoc.FaceList(), theFile, theProgress)) |
266 | { |
267 | return false; |
268 | } |
269 | |
270 | return true; |
271 | } |
272 | |
273 | //================================================================ |
274 | // Function : createMeshReaderContext |
275 | // Purpose : |
276 | //================================================================ |
277 | Handle(RWGltf_PrimitiveArrayReader) RWGltf_CafReader::createMeshReaderContext() |
278 | { |
279 | Handle(RWGltf_TriangulationReader) aReader = new RWGltf_TriangulationReader(); |
280 | return aReader; |
281 | } |
282 | |
283 | //================================================================ |
284 | // Function : readLateData |
285 | // Purpose : |
286 | //================================================================ |
287 | Standard_Boolean RWGltf_CafReader::readLateData (NCollection_Vector<TopoDS_Face>& theFaces, |
288 | const TCollection_AsciiString& theFile, |
289 | const Handle(Message_ProgressIndicator)& theProgress) |
290 | { |
291 | Message_ProgressSentry aPSentryTris (theProgress, "Loading glTF triangulation", 0, Max (1, theFaces.Size()), 1); |
292 | const Handle(OSD_ThreadPool)& aThreadPool = OSD_ThreadPool::DefaultPool(); |
293 | const int aNbThreads = myToParallel ? Min (theFaces.Size(), aThreadPool->NbDefaultThreadsToLaunch()) : 1; |
294 | OSD_ThreadPool::Launcher aLauncher (*aThreadPool, aNbThreads); |
295 | |
296 | CafReader_GltfReaderFunctor aFunctor (this, theFaces, aPSentryTris, aLauncher, |
297 | TCollection_AsciiString ("File '") + theFile + "' defines invalid glTF!\n"); |
298 | aLauncher.Perform (theFaces.Lower(), theFaces.Upper() + 1, aFunctor); |
299 | return Standard_True; |
300 | } |