FreeFOAM The Cross-Platform CFD Toolkit
writeOBJ.C
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
11  OpenFOAM is free software: you can redistribute it and/or modify it
12  under the terms of the GNU General Public License as published by
13  the Free Software Foundation, either version 3 of the License, or
14  (at your option) any later version.
15 
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17  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
21  You should have received a copy of the GNU General Public License
22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23 
24 Description
25  Lightwave OBJ format.
26 
27  Note: Java obj loader does not support '#' on line
28 
29 \*---------------------------------------------------------------------------*/
30 
31 #include <triSurface/triSurface.H>
32 
33 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
34 
35 namespace Foam
36 {
37 
38 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
39 
40 void triSurface::writeOBJ(const bool writeSorted, Ostream& os) const
41 {
42  // Write header
43  os << "# Wavefront OBJ file" << endl
44  << "# Regions:" << endl;
45 
46  labelList faceMap;
47 
48  surfacePatchList myPatches(calcPatches(faceMap));
49 
50  const pointField& ps = points();
51 
52  // Print patch names as comment
53  forAll(myPatches, patchI)
54  {
55  os << "# " << patchI << " "
56  << myPatches[patchI].name() << endl;
57  }
58  os << "#" << endl;
59 
60  os << "# points : " << ps.size() << endl
61  << "# triangles : " << size() << endl
62  << "#" << endl;
63 
64 
65  // Write vertex coords
66  forAll(ps, pointi)
67  {
68  os << "v "
69  << ps[pointi].x() << ' '
70  << ps[pointi].y() << ' '
71  << ps[pointi].z() << endl;
72  }
73 
74  if (writeSorted)
75  {
76  label faceIndex = 0;
77 
78  forAll(myPatches, patchI)
79  {
80  // Print all faces belonging to this patch
81 
82  os << "g " << myPatches[patchI].name() << endl;
83 
84  for
85  (
86  label patchFaceI = 0;
87  patchFaceI < myPatches[patchI].size();
88  patchFaceI++
89  )
90  {
91  const label faceI = faceMap[faceIndex++];
92 
93  os << "f "
94  << operator[](faceI)[0] + 1 << ' '
95  << operator[](faceI)[1] + 1 << ' '
96  << operator[](faceI)[2] + 1
97  //<< " # " << operator[](faceI).region()
98  << endl;
99  }
100  }
101  }
102  else
103  {
104  forAll(*this, faceI)
105  {
106  os << "f "
107  << operator[](faceI)[0] + 1 << ' '
108  << operator[](faceI)[1] + 1 << ' '
109  << operator[](faceI)[2] + 1
110  //<< " # " << operator[](faceI).region()
111  << endl;
112  }
113  }
114 }
115 
116 
117 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
118 
119 } // End namespace Foam
120 
121 // ************************ vim: set sw=4 sts=4 et: ************************ //