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595 jab 1 
/* ----------------------------------------------------------------------- *
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 * This file is part of GEL, http://www.imm.dtu.dk/GEL
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 * Copyright (C) the authors and DTU Informatics
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 * For license and list of authors, see ../../doc/intro.pdf
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 * ----------------------------------------------------------------------- */
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#include <fstream>
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#include "obj_load.h"
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#include "Manifold.h"
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using namespace std;
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using namespace CGLA;
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namespace HMesh
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{
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    using std::string;
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    bool obj_load(const string& filename, Manifold& m)
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    {
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        ifstream obj_file(filename.data());
595 jab 21 
 
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        if(obj_file)
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        {
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            string buf;
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            vector<Vec3f> vertices;
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            vector<int> faces;
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            vector<int> indices;
652 janba 28 
 
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            while(obj_file >> buf)
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            {
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                switch(buf[0])
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                {
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                    case 'v': // v, vn, vt
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                    {
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                        if(buf == "v")
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                        {
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                            Vec3f v_geo;
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                            obj_file >> v_geo;
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                            vertices.push_back(v_geo);
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                        }
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                        else if(buf == "vn")
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                        {
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                            Vec3f v_norm;
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                            obj_file >> v_norm;
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                        }
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                        else if(buf == "vt")
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                        {
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                            Vec3f v_tex;
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                            obj_file >> v_tex[0] >> v_tex[1];
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                            v_tex[2]=1;
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                        }
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                    }
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                        break;
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                    case 'f':
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                    {
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                        char line[1024];
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                        vector<int> v_indices;
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                        vector<int> t_indices;
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                        vector<int> n_indices;
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                        obj_file.getline(line, 1022);
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                        char* pch = strtok(line, " \t");
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                        int ctr = 0;
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                        while(pch != 0)
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                        {
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                            int v,t,n;
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                            if(sscanf(pch, "%d/%d/%d", &v, &t, &n)==3)
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                            {
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                                indices.push_back(v>0?v-1:vertices.size()+v);
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                                ++ctr;
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                            }
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                            else if(sscanf(pch, "%d//%d", &v, &n)==2)
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                            {
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                                indices.push_back(v>0?v-1:vertices.size()+v);
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                                ++ctr;
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                            }
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                            else if(sscanf(pch, "%d/%d", &v, &t)==2)
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                            {
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                                indices.push_back(v>0?v-1:vertices.size()+v);
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                                ++ctr;
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                            }
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                            else if(sscanf(pch, "%d", &v)==1)
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                            {
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                                indices.push_back(v>0?v-1:vertices.size()+v);
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                                ++ctr;
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                            }
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                            pch = strtok(0, " \t");
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                        }
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                        faces.push_back(ctr);
652 janba 91 
                    }
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                        break;
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                    case 'm':
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                        obj_file >> buf;
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                        break;
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                    case 'u':
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                        obj_file >> buf;
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                        break;
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                    case '#':
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                    default:
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                        obj_file.ignore(1024, '\n');
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                        break;
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                }
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            }
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            cout << "Loaded " << vertices.size() << " vertices and " << faces.size() << " faces"<< endl;
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            m.clear();
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            m.build(vertices.size(),
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                    reinterpret_cast<float*>(&vertices[0]),
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                    faces.size(),
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                    &faces[0],
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                    &indices[0]);
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            return true;
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        }
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        return false;
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    }
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}