OBJReader.cc 22.9 KB
Newer Older
Jan Möbius's avatar
Jan Möbius committed
1
/* ========================================================================= *
Jan Möbius's avatar
Jan Möbius committed
2
3
 *                                                                           *
 *                               OpenMesh                                    *
Jan Möbius's avatar
Jan Möbius committed
4
 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
Jan Möbius's avatar
Typo    
Jan Möbius committed
5
 *           Department of Computer Graphics and Multimedia                  *
Jan Möbius's avatar
Jan Möbius committed
6
7
 *                          All rights reserved.                             *
 *                            www.openmesh.org                               *
Jan Möbius's avatar
Jan Möbius committed
8
 *                                                                           *
9
 *---------------------------------------------------------------------------*
Jan Möbius's avatar
Jan Möbius committed
10
11
 * This file is part of OpenMesh.                                            *
 *---------------------------------------------------------------------------*
12
 *                                                                           *
Jan Möbius's avatar
Jan Möbius committed
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 * Redistribution and use in source and binary forms, with or without        *
 * modification, are permitted provided that the following conditions        *
 * are met:                                                                  *
 *                                                                           *
 * 1. Redistributions of source code must retain the above copyright notice, *
 *    this list of conditions and the following disclaimer.                  *
 *                                                                           *
 * 2. Redistributions in binary form must reproduce the above copyright      *
 *    notice, this list of conditions and the following disclaimer in the    *
 *    documentation and/or other materials provided with the distribution.   *
 *                                                                           *
 * 3. Neither the name of the copyright holder nor the names of its          *
 *    contributors may be used to endorse or promote products derived from   *
 *    this software without specific prior written permission.               *
 *                                                                           *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       *
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A           *
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,  *
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,       *
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR        *
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    *
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING      *
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS        *
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              *
Jan Möbius's avatar
Jan Möbius committed
39
40
 *                                                                           *
 * ========================================================================= */
41
42

/*===========================================================================*\
43
 *                                                                           *
44
45
 *   $Revision$                                                         *
 *   $Date$                   *
Jan Möbius's avatar
Jan Möbius committed
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 *                                                                           *
\*===========================================================================*/


//== INCLUDES =================================================================


// OpenMesh
#include <OpenMesh/Core/IO/reader/OBJReader.hh>
#include <OpenMesh/Core/IO/IOManager.hh>
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Core/Utils/color_cast.hh>
// STL
#if defined(OM_CC_MIPS)
#  include <ctype.h>
/// \bug Workaround for STLPORT 4.6: isspace seems not to be in namespace std!
#elif defined(_STLPORT_VERSION) && (_STLPORT_VERSION==0x460)
#  include <cctype>
#else
using std::isspace;
#endif

#ifndef WIN32
#endif

71
#include <fstream>
72

Jan Möbius's avatar
Jan Möbius committed
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
//=== NAMESPACES ==============================================================


namespace OpenMesh {
namespace IO {


//=== INSTANCIATE =============================================================


_OBJReader_  __OBJReaderInstance;
_OBJReader_& OBJReader() { return __OBJReaderInstance; }


//=== IMPLEMENTATION ==========================================================

89
90
91
92
93
//-----------------------------------------------------------------------------

void trimString( std::string& _string) {
  // Trim Both leading and trailing spaces

94
95
  size_t start = _string.find_first_not_of(" \t\r\n");
  size_t end   = _string.find_last_not_of(" \t\r\n");
96
97
98
99
100
101
102

  if(( std::string::npos == start ) || ( std::string::npos == end))
    _string = "";
  else
    _string = _string.substr( start, end-start+1 );
}

103
104
105
106
107
//-----------------------------------------------------------------------------

// remove duplicated indices from one face
void remove_duplicated_vertices(BaseImporter::VHandles& _indices)
{
108
109
110
111
112
  BaseImporter::VHandles::iterator endIter = _indices.end();
  for (BaseImporter::VHandles::iterator iter = _indices.begin(); iter != endIter; ++iter)
    endIter = std::remove(iter+1, endIter, *(iter));

  _indices.erase(endIter,_indices.end());
113
114
}

115
//-----------------------------------------------------------------------------
Jan Möbius's avatar
Jan Möbius committed
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132

_OBJReader_::
_OBJReader_()
{
  IOManager().register_module(this);
}


//-----------------------------------------------------------------------------


bool
_OBJReader_::
read(const std::string& _filename, BaseImporter& _bi, Options& _opt)
{
  std::fstream in( _filename.c_str(), std::ios_base::in );

133
  if (!in.is_open() || !in.good())
Jan Möbius's avatar
Jan Möbius committed
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
  {
    omerr() << "[OBJReader] : cannot not open file "
          << _filename
          << std::endl;
    return false;
  }

  {
#if defined(WIN32)
    std::string::size_type dot = _filename.find_last_of("\\/");
#else
    std::string::size_type dot = _filename.rfind("/");
#endif
    path_ = (dot == std::string::npos)
      ? "./"
      : std::string(_filename.substr(0,dot+1));
  }

  bool result = read(in, _bi, _opt);

  in.close();
  return result;
}

//-----------------------------------------------------------------------------

bool
_OBJReader_::
read_material(std::fstream& _in)
{
  std::string line;
  std::string keyWrd;
166
  std::string textureName;
Jan Möbius's avatar
Jan Möbius committed
167

Martin Schultz's avatar
Martin Schultz committed
168
  std::stringstream  stream;
169

Jan Möbius's avatar
Jan Möbius committed
170
171
172
173
  std::string key;
  Material    mat;
  float       f1,f2,f3;
  bool        indef = false;
174
  int         textureId = 1;
Jan Möbius's avatar
Jan Möbius committed
175
176


Martin Habbecke's avatar
Martin Habbecke committed
177
  materials_.clear();
Jan Möbius's avatar
Jan Möbius committed
178
179
180
181
182
183
184
185
186
187
188
189
190
  mat.cleanup();

  while( _in && !_in.eof() )
  {
    std::getline(_in,line);
    if ( _in.bad() ){
      omerr() << "  Warning! Could not read file properly!\n";
      return false;
    }

    if ( line.empty() )
      continue;

191
192
    stream.str(line);
    stream.clear();
Jan Möbius's avatar
Jan Möbius committed
193
194
195

    stream >> keyWrd;

196
    if( ( isspace(line[0]) && line[0] != '\t' ) || line[0] == '#' )
Jan Möbius's avatar
Jan Möbius committed
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
    {
      if (indef && !key.empty() && mat.is_valid())
      {
        materials_[key] = mat;
        mat.cleanup();
      }
    }

    else if (keyWrd == "newmtl") // begin new material definition
    {
      stream >> key;
      indef = true;
    }

    else if (keyWrd == "Kd") // diffuse color
    {
      stream >> f1; stream >> f2; stream >> f3;

      if( !stream.fail() )
        mat.set_Kd(f1,f2,f3);
    }

    else if (keyWrd == "Ka") // ambient color
    {
      stream >> f1; stream >> f2; stream >> f3;

      if( !stream.fail() )
        mat.set_Ka(f1,f2,f3);
    }

    else if (keyWrd == "Ks") // specular color
    {
      stream >> f1; stream >> f2; stream >> f3;

      if( !stream.fail() )
        mat.set_Ks(f1,f2,f3);
    }
#if 0
    else if (keyWrd == "illum") // diffuse/specular shading model
    {
      ; // just skip this
    }

    else if (keyWrd == "Ns") // Shininess [0..200]
    {
      ; // just skip this
    }

    else if (keyWrd == "map_") // map images
    {
      // map_Ks, specular map
      // map_Ka, ambient map
      // map_Bump, bump map
      // map_d,  opacity map
      ; // just skip this
    }
#endif
254
    else if (keyWrd == "map_Kd" ) {
255
256
      // Get the rest of the line, removing leading or trailing spaces
      // This will define the filename of the texture
257
258
      std::getline(stream,textureName);
      trimString(textureName);
259
260
      if ( ! textureName.empty() )
        mat.set_map_Kd( textureName, textureId++ );
261
    }
Jan Möbius's avatar
Jan Möbius committed
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
    else if (keyWrd == "Tr") // transparency value
    {
      stream >> f1;

      if( !stream.fail() )
        mat.set_Tr(f1);
    }
    else if (keyWrd == "d") // transparency value
    {
      stream >> f1;

      if( !stream.fail() )
        mat.set_Tr(f1);
    }

    if ( _in && indef && mat.is_valid() && !key.empty())
      materials_[key] = mat;
  }
  return true;
}
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
//-----------------------------------------------------------------------------

bool
_OBJReader_::
read_vertices(std::istream& _in, BaseImporter& _bi, Options& _opt,
              std::vector<Vec3f> & normals,
              std::vector<Vec3f> & colors,
              std::vector<Vec3f> & texcoords3d,
              std::vector<Vec2f> & texcoords,
              std::vector<VertexHandle> & vertexHandles,
              Options & fileOptions)
{
    float x, y, z, u, v, w;
    float r, g, b;

    std::string line;
    std::string keyWrd;

    std::stringstream stream;


    // Options supplied by the user
    const Options & userOptions = _opt;

    while( _in && !_in.eof() )
    {
        std::getline(_in,line);
        if ( _in.bad() ){
          omerr() << "  Warning! Could not read file properly!\n";
          return false;
        }

        // Trim Both leading and trailing spaces
        trimString(line);

        // comment
        if ( line.size() == 0 || line[0] == '#' || isspace(line[0]) ) {
          continue;
        }

        stream.str(line);
        stream.clear();

        stream >> keyWrd;

        // vertex
        if (keyWrd == "v")
        {
          stream >> x; stream >> y; stream >> z;

          if ( !stream.fail() )
          {
            vertexHandles.push_back(_bi.add_vertex(OpenMesh::Vec3f(x,y,z)));
            stream >> r; stream >> g; stream >> b;

            if ( !stream.fail() )
            {
              if (  userOptions.vertex_has_color() ) {
                fileOptions += Options::VertexColor;
                colors.push_back(OpenMesh::Vec3f(r,g,b));
              }
            }
          }
        }

        // texture coord
        else if (keyWrd == "vt")
        {
          stream >> u; stream >> v;

          if ( !stream.fail()  ){

            if ( userOptions.vertex_has_texcoord() || userOptions.face_has_texcoord() ) {
              texcoords.push_back(OpenMesh::Vec2f(u, v));

              // Can be used for both!
              fileOptions += Options::VertexTexCoord;
              fileOptions += Options::FaceTexCoord;

              // try to read the w component as it is optional
              stream >> w;
              if ( !stream.fail()  )
                  texcoords3d.push_back(OpenMesh::Vec3f(u, v, w));

            }

          }else{
            omerr() << "Only single 2D or 3D texture coordinate per vertex"
                  << "allowed!" << std::endl;
            return false;
          }
        }

        // color per vertex
        else if (keyWrd == "vc")
        {
          stream >> r; stream >> g; stream >> b;

          if ( !stream.fail()   ){
            if ( userOptions.vertex_has_color() ) {
              colors.push_back(OpenMesh::Vec3f(r,g,b));
              fileOptions += Options::VertexColor;
            }
          }
        }

        // normal
        else if (keyWrd == "vn")
        {
          stream >> x; stream >> y; stream >> z;

          if ( !stream.fail() ) {
            if (userOptions.vertex_has_normal() ){
              normals.push_back(OpenMesh::Vec3f(x,y,z));
              fileOptions += Options::VertexNormal;
            }
          }
        }
    }

    return true;
}
Jan Möbius's avatar
Jan Möbius committed
404
405
406
407
408

//-----------------------------------------------------------------------------

bool
_OBJReader_::
409
read(std::istream& _in, BaseImporter& _bi, Options& _opt)
Jan Möbius's avatar
Jan Möbius committed
410
411
412
413
{
  std::string line;
  std::string keyWrd;

414
  std::vector<Vec3f>        normals;
415
  std::vector<Vec3f>        colors;
416
417
  std::vector<Vec3f>        texcoords3d;
  std::vector<Vec2f>        texcoords;
418
  std::vector<VertexHandle> vertexHandles;
419

420
421
422
423
  BaseImporter::VHandles    vhandles;
  std::vector<Vec3f>        face_texcoords3d;
  std::vector<Vec2f>        face_texcoords;

424
  std::string               matname;
Jan Möbius's avatar
Jan Möbius committed
425

Martin Schultz's avatar
Martin Schultz committed
426
  std::stringstream         stream, lineData, tmp;
427

Jan Möbius's avatar
Jan Möbius committed
428

429
430
431
432
433
434
  // Options supplied by the user
  Options userOptions = _opt;

  // Options collected via file parsing
  Options fileOptions;

435
436
437
438
439
440
441
442
443
444
  // pass 1: read vertices
  if ( !read_vertices(_in, _bi, _opt,
                      normals, colors, texcoords3d, texcoords,
                      vertexHandles, fileOptions) ){
      return false;
  }

  // reset stream for second pass
  _in.clear();
  _in.seekg(0, std::ios::beg);
445

Max Limper's avatar
Max Limper committed
446
  // pass 2: read faces
Jan Möbius's avatar
Jan Möbius committed
447
448
449
450
451
452
453
454
  while( _in && !_in.eof() )
  {
    std::getline(_in,line);
    if ( _in.bad() ){
      omerr() << "  Warning! Could not read file properly!\n";
      return false;
    }

455
    // Trim Both leading and trailing spaces
456
    trimString(line);
457

Jan Möbius's avatar
Jan Möbius committed
458
459
460
461
462
    // comment
    if ( line.size() == 0 || line[0] == '#' || isspace(line[0]) ) {
      continue;
    }

463
464
    stream.str(line);
    stream.clear();
Jan Möbius's avatar
Jan Möbius committed
465
466
467
468
469
470
471
472

    stream >> keyWrd;

    // material file
    if (keyWrd == "mtllib")
    {
      std::string matFile;

Jan Möbius's avatar
Jan Möbius committed
473
474
475
476
      // Get the rest of the line, removing leading or trailing spaces
      // This will define the filename of the texture
      std::getline(stream,matFile);
      trimString(matFile);
Jan Möbius's avatar
Jan Möbius committed
477
478
479

      matFile = path_ + matFile;

Jan Möbius's avatar
Jan Möbius committed
480
      //omlog() << "Load material file " << matFile << std::endl;
Jan Möbius's avatar
Jan Möbius committed
481
482
483
484
485
486

      std::fstream matStream( matFile.c_str(), std::ios_base::in );

      if ( matStream ){

        if ( !read_material( matStream ) )
487
            omerr() << "  Warning! Could not read file properly!\n";
Jan Möbius's avatar
Jan Möbius committed
488
489
490
        matStream.close();

      }else
491
          omerr() << "  Warning! Material file '" << matFile << "' not found!\n";
492

Jan Möbius's avatar
Jan Möbius committed
493
      //omlog() << "  " << materials_.size() << " materials loaded.\n";
494

Jan Möbius's avatar
Jan Möbius committed
495
      for ( MaterialList::iterator material = materials_.begin(); material != materials_.end(); ++material )
496
      {
Jan Möbius's avatar
Jan Möbius committed
497
498
499
        // Save the texture information in a property
        if ( (*material).second.has_map_Kd() )
          _bi.add_texture_information( (*material).second.map_Kd_index() , (*material).second.map_Kd() );
500
501
      }

Jan Möbius's avatar
Jan Möbius committed
502
503
504
505
506
507
508
509
510
511
512
513
514
515
    }

    // usemtl
    else if (keyWrd == "usemtl")
    {
      stream >> matname;
      if (materials_.find(matname)==materials_.end())
      {
        omerr() << "Warning! Material '" << matname
              << "' not defined in material file.\n";
        matname="";
      }
    }

516
    // faces
Jan Möbius's avatar
Jan Möbius committed
517
518
519
520
521
522
    else if (keyWrd == "f")
    {
      int component(0), nV(0);
      int value;

      vhandles.clear();
523
      face_texcoords.clear();
Jan Möbius's avatar
Jan Möbius committed
524
525
526
527

      // read full line after detecting a face
      std::string faceLine;
      std::getline(stream,faceLine);
528
529
      lineData.str( faceLine );
      lineData.clear();
Jan Möbius's avatar
Jan Möbius committed
530

531
532
533
      FaceHandle fh;
      BaseImporter::VHandles faceVertices;

Jan Möbius's avatar
Jan Möbius committed
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
      // work on the line until nothing left to read
      while ( !lineData.eof() )
      {
        // read one block from the line ( vertex/texCoord/normal )
        std::string vertex;
        lineData >> vertex;

        do{

          //get the component (vertex/texCoord/normal)
          size_t found=vertex.find("/");

          // parts are seperated by '/' So if no '/' found its the last component
          if( found != std::string::npos ){

            // read the index value
550
551
            tmp.str( vertex.substr(0,found) );
            tmp.clear();
Jan Möbius's avatar
Jan Möbius committed
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573

            // If we get an empty string this property is undefined in the file
            if ( vertex.substr(0,found).empty() ) {
              // Switch to next field
              vertex = vertex.substr(found+1);

              // Now we are at the next component
              ++component;

              // Skip further processing of this component
              continue;
            }

            // Read current value
            tmp >> value;

            // remove the read part from the string
            vertex = vertex.substr(found+1);

          } else {

            // last component of the vertex, read it.
574
575
            tmp.str( vertex );
            tmp.clear();
Jan Möbius's avatar
Jan Möbius committed
576
577
            tmp >> value;

Jan Möbius's avatar
Jan Möbius committed
578
579
580
            // Clear vertex after finished reading the line
            vertex="";

Jan Möbius's avatar
Jan Möbius committed
581
582
583
584
585
586
587
588
589
590
591
            // Nothing to read here ( garbage at end of line )
            if ( tmp.fail() ) {
              continue;
            }
          }

          // store the component ( each component is referenced by the index here! )
          switch (component)
          {
            case 0: // vertex
              if ( value < 0 ) {
592
593
594
                // Calculation of index :
                // -1 is the last vertex in the list
                // As obj counts from 1 and not zero add +1
595
                value = int(_bi.n_vertices() + value + 1);
Jan Möbius's avatar
Jan Möbius committed
596
              }
597
              // Obj counts from 1 and not zero .. array counts from zero therefore -1
Jan Möbius's avatar
Jan Möbius committed
598
              vhandles.push_back(VertexHandle(value-1));
599
              faceVertices.push_back(VertexHandle(value-1));
600
              if (fileOptions.vertex_has_color() )
601
                _bi.set_color(vhandles.back(), colors[value-1]);
Jan Möbius's avatar
Jan Möbius committed
602
              break;
603
	      
Jan Möbius's avatar
Jan Möbius committed
604
605
            case 1: // texture coord
              if ( value < 0 ) {
606
607
608
                // Calculation of index :
                // -1 is the last vertex in the list
                // As obj counts from 1 and not zero add +1
609
                value = int(texcoords.size()) + value + 1;
Jan Möbius's avatar
Jan Möbius committed
610
611
              }
              assert(!vhandles.empty());
612
613
614
615
616
617
618


              if ( fileOptions.vertex_has_texcoord() && userOptions.vertex_has_texcoord() ) {

                if (!texcoords.empty() && (unsigned int) (value - 1) < texcoords.size()) {
                  // Obj counts from 1 and not zero .. array counts from zero therefore -1
                  _bi.set_texcoord(vhandles.back(), texcoords[value - 1]);
619
620
                  if(!texcoords3d.empty() && (unsigned int) (value -1) < texcoords3d.size())
                    _bi.set_texcoord(vhandles.back(), texcoords3d[value - 1]);
621
622
623
624
625
626
627
628
629
630
                } else {
                  omerr() << "Error setting Texture coordinates" << std::endl;
                }

                }

                if (fileOptions.face_has_texcoord() && userOptions.face_has_texcoord() ) {

                  if (!texcoords.empty() && (unsigned int) (value - 1) < texcoords.size()) {
                    face_texcoords.push_back( texcoords[value-1] );
631
632
                    if(!texcoords3d.empty() && (unsigned int) (value -1) < texcoords3d.size())
                      face_texcoords3d.push_back( texcoords3d[value-1] );
633
634
635
636
637
                  } else {
                    omerr() << "Error setting Texture coordinates" << std::endl;
                  }
                }

638

Jan Möbius's avatar
Jan Möbius committed
639
640
641
642
              break;

            case 2: // normal
              if ( value < 0 ) {
643
644
645
                // Calculation of index :
                // -1 is the last vertex in the list
                // As obj counts from 1 and not zero add +1
646
                value = int(normals.size()) + value + 1;
Jan Möbius's avatar
Jan Möbius committed
647
              }
648

649
              // Obj counts from 1 and not zero .. array counts from zero therefore -1
650
651
652
653
654
              if (fileOptions.vertex_has_normal() ) {
                assert(!vhandles.empty());
                assert((unsigned int)(value-1) < normals.size());
                _bi.set_normal(vhandles.back(), normals[value-1]);
              }
Jan Möbius's avatar
Jan Möbius committed
655
656
657
658
659
660
              break;
          }

          // Prepare for reading next component
          ++component;

Jan Möbius's avatar
Jan Möbius committed
661
662
          // Read until line does not contain any other info
        } while ( !vertex.empty() );
Jan Möbius's avatar
Jan Möbius committed
663
664
665
666

        component = 0;
        nV++;

667
      }
Jan Möbius's avatar
Jan Möbius committed
668

669
670
      // note that add_face can possibly triangulate the faces, which is why we have to
      // store the current number of faces first
Jan Möbius's avatar
Jan Möbius committed
671
      size_t n_faces = _bi.n_faces();
672
673
674
675
676
      remove_duplicated_vertices(faceVertices);

      //A minimum of three vertices are required.
      if (faceVertices.size() > 2)
        fh = _bi.add_face(faceVertices);
Jan Möbius's avatar
Jan Möbius committed
677

678
      if (!vhandles.empty() && fh.is_valid() )
679
      {
680
        _bi.add_face_texcoords(fh, vhandles[0], face_texcoords);
681
682
        _bi.add_face_texcoords(fh, vhandles[0], face_texcoords3d);
      }
683

684
      if ( !matname.empty()  )
Jan Möbius's avatar
Jan Möbius committed
685
686
687
688
      {
        std::vector<FaceHandle> newfaces;

        for( size_t i=0; i < _bi.n_faces()-n_faces; ++i )
689
          newfaces.push_back(FaceHandle(int(n_faces+i)));
Jan Möbius's avatar
Jan Möbius committed
690

691
692
693
694
695
        Material& mat = materials_[matname];

        if ( mat.has_Kd() ) {
          Vec3uc fc = color_cast<Vec3uc, Vec3f>(mat.Kd());

696
697
698
699
          if ( userOptions.face_has_color()) {

            for (std::vector<FaceHandle>::iterator it = newfaces.begin(); it != newfaces.end(); ++it)
              _bi.set_color(*it, fc);
700

701
702
            fileOptions += Options::FaceColor;
          }
703
704
705
706
        }

        // Set the texture index in the face index property
        if ( mat.has_map_Kd() ) {
Jan Möbius's avatar
Jan Möbius committed
707

708
709
710
711
712
713
714
715
          if (userOptions.face_has_texcoord()) {

            for (std::vector<FaceHandle>::iterator it = newfaces.begin(); it != newfaces.end(); ++it)
              _bi.set_face_texindex(*it, mat.map_Kd_index());

            fileOptions += Options::FaceTexCoord;

          }
Jan Möbius's avatar
Jan Möbius committed
716

717
        } else {
718

719
          // If we don't have the info, set it to no texture
720
721
722
723
724
725
          if (userOptions.face_has_texcoord()) {

            for (std::vector<FaceHandle>::iterator it = newfaces.begin(); it != newfaces.end(); ++it)
              _bi.set_face_texindex(*it, 0);

          }
726
        }
Jan Möbius's avatar
Jan Möbius committed
727

728
729
730
731
      } else {
        std::vector<FaceHandle> newfaces;

        for( size_t i=0; i < _bi.n_faces()-n_faces; ++i )
732
          newfaces.push_back(FaceHandle(int(n_faces+i)));
733
734

        // Set the texture index to zero as we don't have any information
735
736
737
        if ( userOptions.face_has_texcoord() )
          for (std::vector<FaceHandle>::iterator it = newfaces.begin(); it != newfaces.end(); ++it)
            _bi.set_face_texindex(*it, 0);
Jan Möbius's avatar
Jan Möbius committed
738
      }
739

Jan Möbius's avatar
Jan Möbius committed
740
    }
741

Jan Möbius's avatar
Jan Möbius committed
742
743
  }

744
745
  // If we do not have any faces,
  // assume this is a point cloud and read the normals and colors directly
746
  if (_bi.n_faces() == 0)
747
  {
748
    int i = 0;
749
750
    // add normal per vertex

751
752
753
754
755
756
    if (normals.size() == _bi.n_vertices()) {
      if ( fileOptions.vertex_has_normal() && userOptions.vertex_has_normal() ) {
        for (std::vector<VertexHandle>::iterator it = vertexHandles.begin(); it != vertexHandles.end(); ++it, i++)
          _bi.set_normal(*it, normals[i]);
      }
    }
757
758

    // add color per vertex
759
760
761
762
763
    i = 0;
    if (colors.size() >= _bi.n_vertices())
      if (fileOptions.vertex_has_color() && userOptions.vertex_has_color()) {
        for (std::vector<VertexHandle>::iterator it = vertexHandles.begin(); it != vertexHandles.end(); ++it, i++)
          _bi.set_color(*it, colors[i]);
764
765
766
767
      }

  }

Jan Möbius's avatar
Jan Möbius committed
768
769
770
  // Return, what we actually read
  _opt = fileOptions;

Jan Möbius's avatar
Jan Möbius committed
771
772
773
774
775
776
777
778
  return true;
}


//=============================================================================
} // namespace IO
} // namespace OpenMesh
//=============================================================================