0a419c51 |
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.SetErrorPrefix (anErrPrefix); |
219 | aDoc.SetCoordinateSystemConverter (myCoordSysConverter); |
220 | if (!theToProbe) |
221 | { |
222 | aDoc.SetAttributeMap (myAttribMap); |
223 | } |
224 | if (isBinaryFile) |
225 | { |
226 | aDoc.SetBinaryFormat (aBinBodyOffset, aBinBodyLen); |
227 | } |
228 | |
229 | #ifdef HAVE_RAPIDJSON |
230 | rapidjson::ParseResult aRes; |
231 | rapidjson::IStreamWrapper aFileStream (aFile); |
232 | if (isBinaryFile) |
233 | { |
234 | aRes = aDoc.ParseStream<rapidjson::kParseStopWhenDoneFlag, rapidjson::UTF8<>, rapidjson::IStreamWrapper> (aFileStream); |
235 | } |
236 | else |
237 | { |
238 | aRes = aDoc.ParseStream (aFileStream); |
239 | } |
240 | if (aRes.IsError()) |
241 | { |
242 | if (aRes.Code() == rapidjson::kParseErrorDocumentEmpty) |
243 | { |
244 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' is empty!", Message_Fail); |
245 | return false; |
246 | } |
247 | TCollection_AsciiString anErrDesc (RWGltf_GltfJsonParser::FormatParseError (aRes.Code())); |
248 | Message::DefaultMessenger()->Send (TCollection_AsciiString ("File '") + theFile + "' defines invalid JSON document!\n" |
249 | + anErrDesc + ".", Message_Fail); |
250 | return false; |
251 | } |
252 | #endif |
253 | |
254 | if (!aDoc.Parse (theProgress)) |
255 | { |
256 | return false; |
257 | } |
258 | |
259 | if (!theToProbe |
260 | && !readLateData (aDoc.FaceList(), theFile, theProgress)) |
261 | { |
262 | return false; |
263 | } |
264 | |
265 | return true; |
266 | } |
267 | |
268 | //================================================================ |
269 | // Function : createMeshReaderContext |
270 | // Purpose : |
271 | //================================================================ |
272 | Handle(RWGltf_PrimitiveArrayReader) RWGltf_CafReader::createMeshReaderContext() |
273 | { |
274 | Handle(RWGltf_TriangulationReader) aReader = new RWGltf_TriangulationReader(); |
275 | return aReader; |
276 | } |
277 | |
278 | //================================================================ |
279 | // Function : readLateData |
280 | // Purpose : |
281 | //================================================================ |
282 | Standard_Boolean RWGltf_CafReader::readLateData (NCollection_Vector<TopoDS_Face>& theFaces, |
283 | const TCollection_AsciiString& theFile, |
284 | const Handle(Message_ProgressIndicator)& theProgress) |
285 | { |
286 | Message_ProgressSentry aPSentryTris (theProgress, "Loading glTF triangulation", 0, Max (1, theFaces.Size()), 1); |
287 | const Handle(OSD_ThreadPool)& aThreadPool = OSD_ThreadPool::DefaultPool(); |
288 | const int aNbThreads = myToParallel ? Min (theFaces.Size(), aThreadPool->NbDefaultThreadsToLaunch()) : 1; |
289 | OSD_ThreadPool::Launcher aLauncher (*aThreadPool, aNbThreads); |
290 | |
291 | CafReader_GltfReaderFunctor aFunctor (this, theFaces, aPSentryTris, aLauncher, |
292 | TCollection_AsciiString ("File '") + theFile + "' defines invalid glTF!\n"); |
293 | aLauncher.Perform (theFaces.Lower(), theFaces.Upper() + 1, aFunctor); |
294 | return Standard_True; |
295 | } |