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b311480e | 1 | // Created on: 1994-10-13 |
2 | // Created by: Marc LEGAY | |
3 | // Copyright (c) 1994-1999 Matra Datavision | |
973c2be1 | 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
b311480e | 5 | // |
973c2be1 | 6 | // This file is part of Open CASCADE Technology software library. |
b311480e | 7 | // |
d5f74e42 | 8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
12 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 13 | // |
973c2be1 | 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. | |
7fd59977 | 16 | |
42cf5bc1 | 17 | |
18 | #include <BRepBuilderAPI_CellFilter.hxx> | |
19 | #include <BRepBuilderAPI_VertexInspector.hxx> | |
20 | #include <gp.hxx> | |
21 | #include <gp_Vec.hxx> | |
22 | #include <gp_XYZ.hxx> | |
23 | #include <Message_ProgressIndicator.hxx> | |
9c6afe19 | 24 | #include <Message_ProgressSentry.hxx> |
7fd59977 | 25 | #include <OSD.hxx> |
42cf5bc1 | 26 | #include <OSD_File.hxx> |
7fd59977 | 27 | #include <OSD_Host.hxx> |
94708556 | 28 | #include <OSD_OpenFile.hxx> |
42cf5bc1 | 29 | #include <OSD_Path.hxx> |
30 | #include <OSD_Protection.hxx> | |
31 | #include <Precision.hxx> | |
32 | #include <RWStl.hxx> | |
33 | #include <Standard_NoMoreObject.hxx> | |
34 | #include <Standard_TypeMismatch.hxx> | |
35 | #include <StlMesh_Mesh.hxx> | |
36 | #include <StlMesh_MeshExplorer.hxx> | |
37 | #include <TCollection_AsciiString.hxx> | |
7fd59977 | 38 | |
42cf5bc1 | 39 | #include <stdio.h> |
fcc61cc4 | 40 | // A static method adding nodes to a mesh and keeping coincident (sharing) nodes. |
41 | static Standard_Integer AddVertex(Handle(StlMesh_Mesh)& mesh, | |
42 | BRepBuilderAPI_CellFilter& filter, | |
43 | BRepBuilderAPI_VertexInspector& inspector, | |
44 | const gp_XYZ& p) | |
45 | { | |
46 | Standard_Integer index; | |
47 | inspector.SetCurrent(p); | |
48 | gp_XYZ minp = inspector.Shift(p, -Precision::Confusion()); | |
49 | gp_XYZ maxp = inspector.Shift(p, +Precision::Confusion()); | |
50 | filter.Inspect(minp, maxp, inspector); | |
51 | const TColStd_ListOfInteger& indices = inspector.ResInd(); | |
52 | if (indices.IsEmpty() == Standard_False) | |
53 | { | |
54 | index = indices.First(); // it should be only one | |
55 | inspector.ClearResList(); | |
56 | } | |
57 | else | |
58 | { | |
59 | index = mesh->AddVertex(p.X(), p.Y(), p.Z()); | |
60 | filter.Add(index, p); | |
61 | inspector.Add(p); | |
62 | } | |
63 | return index; | |
64 | } | |
65 | ||
7fd59977 | 66 | // constants |
8cb69787 | 67 | static const size_t HEADER_SIZE = 84; |
68 | static const size_t SIZEOF_STL_FACET = 50; | |
69 | static const size_t STL_MIN_FILE_SIZE = 284; | |
70 | static const size_t ASCII_LINES_PER_FACET = 7; | |
71 | ||
72 | static const int IND_THRESHOLD = 1000; // increment the indicator every 1k triangles | |
7fd59977 | 73 | |
ed482379 | 74 | //======================================================================= |
7fd59977 | 75 | //function : WriteInteger |
76 | //purpose : writing a Little Endian 32 bits integer | |
77 | //======================================================================= | |
78 | ||
79 | inline static void WriteInteger(OSD_File& ofile,const Standard_Integer value) | |
80 | { | |
81 | union { | |
82 | Standard_Integer i;// don't be afraid, this is just an unsigned int | |
83 | char c[4]; | |
84 | } bidargum; | |
85 | ||
86 | bidargum.i = value; | |
87 | ||
88 | Standard_Integer entier; | |
ed482379 | 89 | |
7fd59977 | 90 | entier = bidargum.c[0] & 0xFF; |
91 | entier |= (bidargum.c[1] & 0xFF) << 0x08; | |
92 | entier |= (bidargum.c[2] & 0xFF) << 0x10; | |
93 | entier |= (bidargum.c[3] & 0xFF) << 0x18; | |
94 | ||
95 | ofile.Write((char *)&entier,sizeof(bidargum.c)); | |
96 | } | |
97 | ||
98 | //======================================================================= | |
99 | //function : WriteDouble2Float | |
100 | //purpose : writing a Little Endian 32 bits float | |
101 | //======================================================================= | |
102 | ||
103 | inline static void WriteDouble2Float(OSD_File& ofile,Standard_Real value) | |
104 | { | |
105 | union { | |
106 | Standard_ShortReal f; | |
107 | char c[4]; | |
108 | } bidargum; | |
109 | ||
110 | bidargum.f = (Standard_ShortReal)value; | |
111 | ||
112 | Standard_Integer entier; | |
ed482379 | 113 | |
7fd59977 | 114 | entier = bidargum.c[0] & 0xFF; |
115 | entier |= (bidargum.c[1] & 0xFF) << 0x08; | |
116 | entier |= (bidargum.c[2] & 0xFF) << 0x10; | |
117 | entier |= (bidargum.c[3] & 0xFF) << 0x18; | |
118 | ||
119 | ofile.Write((char *)&entier,sizeof(bidargum.c)); | |
120 | } | |
121 | ||
122 | ||
123 | //======================================================================= | |
124 | //function : readFloat2Double | |
125 | //purpose : reading a Little Endian 32 bits float | |
126 | //======================================================================= | |
127 | ||
128 | inline static Standard_Real ReadFloat2Double(OSD_File &aFile) | |
129 | { | |
130 | union { | |
131 | Standard_Boolean i; // don't be afraid, this is just an unsigned int | |
132 | Standard_ShortReal f; | |
133 | }bidargum; | |
134 | ||
135 | char c[4]; | |
136 | Standard_Address adr; | |
137 | adr = (Standard_Address)c; | |
138 | Standard_Integer lread; | |
139 | aFile.Read(adr,4,lread); | |
140 | bidargum.i = c[0] & 0xFF; | |
141 | bidargum.i |= (c[1] & 0xFF) << 0x08; | |
142 | bidargum.i |= (c[2] & 0xFF) << 0x10; | |
143 | bidargum.i |= (c[3] & 0xFF) << 0x18; | |
144 | ||
145 | return (Standard_Real)(bidargum.f); | |
146 | } | |
147 | ||
148 | ||
149 | ||
150 | //======================================================================= | |
151 | //function : WriteBinary | |
152 | //purpose : write a binary STL file in Little Endian format | |
153 | //======================================================================= | |
154 | ||
9c6afe19 RK |
155 | Standard_Boolean RWStl::WriteBinary (const Handle(StlMesh_Mesh)& theMesh, |
156 | const OSD_Path& thePath, | |
157 | const Handle(Message_ProgressIndicator)& theProgInd) | |
7fd59977 | 158 | { |
9c6afe19 RK |
159 | OSD_File aFile (thePath); |
160 | aFile.Build (OSD_WriteOnly, OSD_Protection()); | |
7fd59977 | 161 | |
162 | Standard_Real x1, y1, z1; | |
163 | Standard_Real x2, y2, z2; | |
164 | Standard_Real x3, y3, z3; | |
ed482379 | 165 | |
9c6afe19 | 166 | // writing 80 bytes of the trash? |
7fd59977 | 167 | char sval[80]; |
9c6afe19 RK |
168 | aFile.Write ((Standard_Address)sval,80); |
169 | WriteInteger (aFile, theMesh->NbTriangles()); | |
170 | ||
7fd59977 | 171 | int dum=0; |
9c6afe19 RK |
172 | StlMesh_MeshExplorer aMexp (theMesh); |
173 | ||
174 | // create progress sentry for domains | |
175 | Standard_Integer aNbDomains = theMesh->NbDomains(); | |
176 | Message_ProgressSentry aDPS (theProgInd, "Mesh domains", 0, aNbDomains, 1); | |
177 | for (Standard_Integer nbd = 1; nbd <= aNbDomains && aDPS.More(); nbd++, aDPS.Next()) | |
178 | { | |
179 | // create progress sentry for triangles in domain | |
180 | Message_ProgressSentry aTPS (theProgInd, "Triangles", 0, | |
181 | theMesh->NbTriangles (nbd), IND_THRESHOLD); | |
182 | Standard_Integer aTriangleInd = 0; | |
183 | for (aMexp.InitTriangle (nbd); aMexp.MoreTriangle(); aMexp.NextTriangle()) | |
184 | { | |
185 | aMexp.TriangleVertices (x1,y1,z1,x2,y2,z2,x3,y3,z3); | |
186 | //pgo aMexp.TriangleOrientation (x,y,z); | |
187 | gp_XYZ Vect12 ((x2-x1), (y2-y1), (z2-z1)); | |
188 | gp_XYZ Vect13 ((x3-x1), (y3-y1), (z3-z1)); | |
189 | gp_XYZ Vnorm = Vect12 ^ Vect13; | |
190 | Standard_Real Vmodul = Vnorm.Modulus (); | |
191 | if (Vmodul > gp::Resolution()) | |
192 | { | |
193 | Vnorm.Divide(Vmodul); | |
194 | } | |
195 | else | |
196 | { | |
197 | // si Vnorm est quasi-nul, on le charge a 0 explicitement | |
198 | Vnorm.SetCoord (0., 0., 0.); | |
199 | } | |
200 | ||
201 | WriteDouble2Float (aFile, Vnorm.X()); | |
202 | WriteDouble2Float (aFile, Vnorm.Y()); | |
203 | WriteDouble2Float (aFile, Vnorm.Z()); | |
204 | ||
205 | WriteDouble2Float (aFile, x1); | |
206 | WriteDouble2Float (aFile, y1); | |
207 | WriteDouble2Float (aFile, z1); | |
208 | ||
209 | WriteDouble2Float (aFile, x2); | |
210 | WriteDouble2Float (aFile, y2); | |
211 | WriteDouble2Float (aFile, z2); | |
212 | ||
213 | WriteDouble2Float (aFile, x3); | |
214 | WriteDouble2Float (aFile, y3); | |
215 | WriteDouble2Float (aFile, z3); | |
ed482379 | 216 | |
9c6afe19 RK |
217 | aFile.Write (&dum, 2); |
218 | ||
219 | // update progress only per 1k triangles | |
220 | if (++aTriangleInd % IND_THRESHOLD == 0) | |
221 | { | |
222 | if (!aTPS.More()) | |
223 | break; | |
224 | aTPS.Next(); | |
7fd59977 | 225 | } |
9c6afe19 | 226 | } |
7fd59977 | 227 | } |
9c6afe19 RK |
228 | aFile.Close(); |
229 | Standard_Boolean isInterrupted = !aDPS.More(); | |
230 | return !isInterrupted; | |
7fd59977 | 231 | } |
232 | //======================================================================= | |
233 | //function : WriteAscii | |
234 | //purpose : write an ASCII STL file | |
235 | //======================================================================= | |
236 | ||
9c6afe19 RK |
237 | Standard_Boolean RWStl::WriteAscii (const Handle(StlMesh_Mesh)& theMesh, |
238 | const OSD_Path& thePath, | |
239 | const Handle(Message_ProgressIndicator)& theProgInd) | |
7fd59977 | 240 | { |
9c6afe19 | 241 | OSD_File theFile (thePath); |
7fd59977 | 242 | theFile.Build(OSD_WriteOnly,OSD_Protection()); |
9c6afe19 | 243 | TCollection_AsciiString buf ("solid\n"); |
7fd59977 | 244 | theFile.Write (buf,buf.Length());buf.Clear(); |
ed482379 | 245 | |
7fd59977 | 246 | Standard_Real x1, y1, z1; |
247 | Standard_Real x2, y2, z2; | |
248 | Standard_Real x3, y3, z3; | |
9c6afe19 RK |
249 | char sval[512]; |
250 | ||
251 | // create progress sentry for domains | |
252 | Standard_Integer aNbDomains = theMesh->NbDomains(); | |
253 | Message_ProgressSentry aDPS (theProgInd, "Mesh domains", 0, aNbDomains, 1); | |
254 | StlMesh_MeshExplorer aMexp (theMesh); | |
255 | for (Standard_Integer nbd = 1; nbd <= aNbDomains && aDPS.More(); nbd++, aDPS.Next()) | |
256 | { | |
257 | // create progress sentry for triangles in domain | |
258 | Message_ProgressSentry aTPS (theProgInd, "Triangles", 0, | |
259 | theMesh->NbTriangles (nbd), IND_THRESHOLD); | |
260 | Standard_Integer aTriangleInd = 0; | |
261 | for (aMexp.InitTriangle (nbd); aMexp.MoreTriangle(); aMexp.NextTriangle()) | |
262 | { | |
7fd59977 | 263 | aMexp.TriangleVertices (x1,y1,z1,x2,y2,z2,x3,y3,z3); |
ed482379 | 264 | |
7fd59977 | 265 | // Standard_Real x, y, z; |
266 | // aMexp.TriangleOrientation (x,y,z); | |
ed482379 | 267 | |
7fd59977 | 268 | gp_XYZ Vect12 ((x2-x1), (y2-y1), (z2-z1)); |
269 | gp_XYZ Vect23 ((x3-x2), (y3-y2), (z3-z2)); | |
9c6afe19 | 270 | gp_XYZ Vnorm = Vect12 ^ Vect23; |
7fd59977 | 271 | Standard_Real Vmodul = Vnorm.Modulus (); |
9c6afe19 RK |
272 | if (Vmodul > gp::Resolution()) |
273 | { | |
274 | Vnorm.Divide (Vmodul); | |
275 | } | |
276 | else | |
277 | { | |
278 | // si Vnorm est quasi-nul, on le charge a 0 explicitement | |
279 | Vnorm.SetCoord (0., 0., 0.); | |
7fd59977 | 280 | } |
91322f44 | 281 | Sprintf (sval, |
9c6afe19 RK |
282 | " facet normal % 12e % 12e % 12e\n" |
283 | " outer loop\n" | |
284 | " vertex % 12e % 12e % 12e\n" | |
285 | " vertex % 12e % 12e % 12e\n" | |
286 | " vertex % 12e % 12e % 12e\n" | |
287 | " endloop\n" | |
288 | " endfacet\n", | |
289 | Vnorm.X(), Vnorm.Y(), Vnorm.Z(), | |
290 | x1, y1, z1, | |
291 | x2, y2, z2, | |
292 | x3, y3, z3); | |
68bc5ed7 | 293 | buf += sval; |
9c6afe19 RK |
294 | theFile.Write (buf, buf.Length()); buf.Clear(); |
295 | ||
296 | // update progress only per 1k triangles | |
297 | if (++aTriangleInd % IND_THRESHOLD == 0) | |
298 | { | |
299 | if (!aTPS.More()) | |
300 | break; | |
301 | aTPS.Next(); | |
7fd59977 | 302 | } |
7fd59977 | 303 | } |
304 | } | |
ed482379 | 305 | |
7fd59977 | 306 | buf += "endsolid\n"; |
9c6afe19 RK |
307 | theFile.Write (buf, buf.Length()); buf.Clear(); |
308 | theFile.Close(); | |
309 | Standard_Boolean isInterrupted = !aDPS.More(); | |
310 | return !isInterrupted; | |
7fd59977 | 311 | } |
312 | //======================================================================= | |
313 | //function : ReadFile | |
ed482379 K |
314 | //Design : |
315 | //Warning : | |
7fd59977 | 316 | //======================================================================= |
317 | ||
857ffd5e | 318 | Handle(StlMesh_Mesh) RWStl::ReadFile (const OSD_Path& thePath, |
9c6afe19 | 319 | const Handle(Message_ProgressIndicator)& theProgInd) |
7fd59977 | 320 | { |
9c6afe19 | 321 | OSD_File file (thePath); |
7fd59977 | 322 | file.Open(OSD_ReadOnly,OSD_Protection(OSD_RWD,OSD_RWD,OSD_RWD,OSD_RWD)); |
323 | Standard_Boolean IsAscii; | |
324 | unsigned char str[128]; | |
325 | Standard_Integer lread,i; | |
326 | Standard_Address ach; | |
327 | ach = (Standard_Address)str; | |
ed482379 | 328 | |
7fd59977 | 329 | // we skip the header which is in Ascii for both modes |
330 | file.Read(ach,HEADER_SIZE,lread); | |
331 | ||
332 | // we read 128 characters to detect if we have a non-ascii char | |
333 | file.Read(ach,sizeof(str),lread); | |
334 | ||
335 | IsAscii = Standard_True; | |
336 | for (i = 0; i< lread && IsAscii; ++i) { | |
337 | if (str[i] > '~') { | |
338 | IsAscii = Standard_False; | |
339 | } | |
340 | } | |
0797d9d3 | 341 | #ifdef OCCT_DEBUG |
ed482379 K |
342 | cout << (IsAscii ? "ascii\n" : "binary\n"); |
343 | #endif | |
7fd59977 | 344 | file.Close(); |
ed482379 | 345 | |
9c6afe19 RK |
346 | return IsAscii ? RWStl::ReadAscii (thePath, theProgInd) |
347 | : RWStl::ReadBinary (thePath, theProgInd); | |
7fd59977 | 348 | } |
349 | ||
350 | //======================================================================= | |
351 | //function : ReadBinary | |
ed482379 K |
352 | //Design : |
353 | //Warning : | |
7fd59977 | 354 | //======================================================================= |
355 | ||
857ffd5e | 356 | Handle(StlMesh_Mesh) RWStl::ReadBinary (const OSD_Path& thePath, |
9c6afe19 | 357 | const Handle(Message_ProgressIndicator)& /*theProgInd*/) |
7fd59977 | 358 | { |
359 | Standard_Integer NBFACET; | |
360 | Standard_Integer ifacet; | |
361 | Standard_Real fx,fy,fz,fx1,fy1,fz1,fx2,fy2,fz2,fx3,fy3,fz3; | |
362 | Standard_Integer i1,i2,i3,lread; | |
363 | char buftest[5]; | |
364 | Standard_Address adr; | |
365 | adr = (Standard_Address)buftest; | |
366 | ||
ed482379 | 367 | // Open the file |
9c6afe19 | 368 | OSD_File theFile (thePath); |
7fd59977 | 369 | theFile.Open(OSD_ReadOnly,OSD_Protection(OSD_RWD,OSD_RWD,OSD_RWD,OSD_RWD)); |
370 | ||
371 | // the size of the file (minus the header size) | |
372 | // must be a multiple of SIZEOF_STL_FACET | |
373 | ||
374 | // compute file size | |
6ff736d8 | 375 | Standard_Size filesize = theFile.Size(); |
7fd59977 | 376 | |
ed482379 | 377 | if ( (filesize - HEADER_SIZE) % SIZEOF_STL_FACET !=0 |
7fd59977 | 378 | || (filesize < STL_MIN_FILE_SIZE)) { |
379 | Standard_NoMoreObject::Raise("RWStl::ReadBinary (wrong file size)"); | |
380 | } | |
381 | ||
382 | // don't trust the number of triangles which is coded in the file | |
383 | // sometimes it is wrong, and with this technique we don't need to swap endians for integer | |
6ff736d8 | 384 | NBFACET = (Standard_Integer)((filesize - HEADER_SIZE) / SIZEOF_STL_FACET); |
7fd59977 | 385 | |
386 | // skip the header | |
387 | theFile.Seek(HEADER_SIZE,OSD_FromBeginning); | |
388 | ||
389 | // create the StlMesh_Mesh object | |
390 | Handle(StlMesh_Mesh) ReadMesh = new StlMesh_Mesh (); | |
391 | ReadMesh->AddDomain (); | |
392 | ||
fcc61cc4 | 393 | // Filter unique vertices to share the nodes of the mesh. |
a7653f4f | 394 | BRepBuilderAPI_CellFilter uniqueVertices(Precision::Confusion()); |
fcc61cc4 | 395 | BRepBuilderAPI_VertexInspector inspector(Precision::Confusion()); |
396 | ||
7fd59977 | 397 | for (ifacet=1; ifacet<=NBFACET; ++ifacet) { |
398 | // read normal coordinates | |
399 | fx = ReadFloat2Double(theFile); | |
400 | fy = ReadFloat2Double(theFile); | |
401 | fz = ReadFloat2Double(theFile); | |
402 | ||
403 | // read vertex 1 | |
404 | fx1 = ReadFloat2Double(theFile); | |
405 | fy1 = ReadFloat2Double(theFile); | |
406 | fz1 = ReadFloat2Double(theFile); | |
407 | ||
408 | // read vertex 2 | |
409 | fx2 = ReadFloat2Double(theFile); | |
410 | fy2 = ReadFloat2Double(theFile); | |
411 | fz2 = ReadFloat2Double(theFile); | |
412 | ||
413 | // read vertex 3 | |
414 | fx3 = ReadFloat2Double(theFile); | |
415 | fy3 = ReadFloat2Double(theFile); | |
416 | fz3 = ReadFloat2Double(theFile); | |
417 | ||
fcc61cc4 | 418 | // Add vertices. |
419 | i1 = AddVertex(ReadMesh, uniqueVertices, inspector, gp_XYZ(fx1, fy1, fz1)); | |
420 | i2 = AddVertex(ReadMesh, uniqueVertices, inspector, gp_XYZ(fx2, fy2, fz2)); | |
421 | i3 = AddVertex(ReadMesh, uniqueVertices, inspector, gp_XYZ(fx3, fy3, fz3)); | |
422 | ||
423 | // Add triangle. | |
7fd59977 | 424 | ReadMesh->AddTriangle (i1,i2,i3,fx,fy,fz); |
425 | ||
426 | // skip extra bytes | |
427 | theFile.Read(adr,2,lread); | |
428 | } | |
429 | ||
430 | theFile.Close (); | |
431 | return ReadMesh; | |
7fd59977 | 432 | } |
fcc61cc4 | 433 | |
7fd59977 | 434 | //======================================================================= |
435 | //function : ReadAscii | |
ed482379 K |
436 | //Design : |
437 | //Warning : | |
7fd59977 | 438 | //======================================================================= |
439 | ||
857ffd5e | 440 | Handle(StlMesh_Mesh) RWStl::ReadAscii (const OSD_Path& thePath, |
9c6afe19 | 441 | const Handle(Message_ProgressIndicator)& theProgInd) |
7fd59977 | 442 | { |
443 | TCollection_AsciiString filename; | |
444 | long ipos; | |
445 | Standard_Integer nbLines = 0; | |
446 | Standard_Integer nbTris = 0; | |
447 | Standard_Integer iTri; | |
7fd59977 | 448 | Standard_Integer i1,i2,i3; |
449 | Handle(StlMesh_Mesh) ReadMesh; | |
450 | ||
9c6afe19 | 451 | thePath.SystemName (filename); |
7fd59977 | 452 | |
ed482379 | 453 | // Open the file |
94708556 | 454 | FILE* file = OSD_OpenFile(filename.ToCString(),"r"); |
7fd59977 | 455 | |
456 | fseek(file,0L,SEEK_END); | |
457 | ||
458 | long filesize = ftell(file); | |
459 | ||
94708556 | 460 | rewind(file); |
7fd59977 | 461 | |
7fd59977 | 462 | // count the number of lines |
463 | for (ipos = 0; ipos < filesize; ++ipos) { | |
464 | if (getc(file) == '\n') | |
465 | nbLines++; | |
466 | } | |
467 | ||
468 | // compute number of triangles | |
469 | nbTris = (nbLines / ASCII_LINES_PER_FACET); | |
470 | ||
471 | // go back to the beginning of the file | |
7fd59977 | 472 | rewind(file); |
473 | ||
474 | // skip header | |
475 | while (getc(file) != '\n'); | |
0797d9d3 | 476 | #ifdef OCCT_DEBUG |
ed482379 K |
477 | cout << "start mesh\n"; |
478 | #endif | |
479 | ReadMesh = new StlMesh_Mesh(); | |
7fd59977 | 480 | ReadMesh->AddDomain(); |
481 | ||
fcc61cc4 | 482 | // Filter unique vertices to share the nodes of the mesh. |
a7653f4f | 483 | BRepBuilderAPI_CellFilter uniqueVertices(Precision::Confusion()); |
fcc61cc4 | 484 | BRepBuilderAPI_VertexInspector inspector(Precision::Confusion()); |
485 | ||
7fd59977 | 486 | // main reading |
9c6afe19 RK |
487 | Message_ProgressSentry aPS (theProgInd, "Triangles", 0, (nbTris - 1) * 1.0 / IND_THRESHOLD, 1); |
488 | for (iTri = 0; iTri < nbTris && aPS.More();) | |
489 | { | |
91322f44 | 490 | char x[256]="", y[256]="", z[256]=""; |
491 | ||
7fd59977 | 492 | // reading the facet normal |
91322f44 | 493 | if (3 != fscanf(file,"%*s %*s %80s %80s %80s\n", x, y, z)) |
494 | break; // error should be properly reported | |
495 | gp_XYZ aN (Atof(x), Atof(y), Atof(z)); | |
7fd59977 | 496 | |
497 | // skip the keywords "outer loop" | |
98160038 | 498 | if (fscanf(file,"%*s %*s") < 0) |
499 | break; | |
7fd59977 | 500 | |
501 | // reading vertex | |
91322f44 | 502 | if (3 != fscanf(file,"%*s %80s %80s %80s\n", x, y, z)) |
503 | break; // error should be properly reported | |
504 | gp_XYZ aV1 (Atof(x), Atof(y), Atof(z)); | |
505 | if (3 != fscanf(file,"%*s %80s %80s %80s\n", x, y, z)) | |
506 | break; // error should be properly reported | |
507 | gp_XYZ aV2 (Atof(x), Atof(y), Atof(z)); | |
508 | if (3 != fscanf(file,"%*s %80s %80s %80s\n", x, y, z)) | |
509 | break; // error should be properly reported | |
510 | gp_XYZ aV3 (Atof(x), Atof(y), Atof(z)); | |
7fd59977 | 511 | |
ed482379 | 512 | // here the facet must be built and put in the mesh datastructure |
7fd59977 | 513 | |
fcc61cc4 | 514 | i1 = AddVertex(ReadMesh, uniqueVertices, inspector, aV1); |
515 | i2 = AddVertex(ReadMesh, uniqueVertices, inspector, aV2); | |
516 | i3 = AddVertex(ReadMesh, uniqueVertices, inspector, aV3); | |
91322f44 | 517 | ReadMesh->AddTriangle (i1, i2, i3, aN.X(), aN.Y(), aN.Z()); |
7fd59977 | 518 | |
519 | // skip the keywords "endloop" | |
98160038 | 520 | if (fscanf(file,"%*s") < 0) |
521 | break; | |
7fd59977 | 522 | |
523 | // skip the keywords "endfacet" | |
98160038 | 524 | if (fscanf(file,"%*s") < 0) |
525 | break; | |
7fd59977 | 526 | |
9c6afe19 RK |
527 | // update progress only per 1k triangles |
528 | if (++iTri % IND_THRESHOLD == 0) | |
529 | aPS.Next(); | |
7fd59977 | 530 | } |
0797d9d3 | 531 | #ifdef OCCT_DEBUG |
ed482379 K |
532 | cout << "end mesh\n"; |
533 | #endif | |
7fd59977 | 534 | fclose(file); |
535 | return ReadMesh; | |
7fd59977 | 536 | } |