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