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C-/C++-Quelltext

int loadMesh(const std::string& filename)
    {
        std::ifstream file(filename);
        if(!file.is_open()){
            std::cout << "Error: \"" << filename << "\" doesn't exist!" << std::endl;
            return -1;
        }
        
        int id = glGenLists(1);
        
        
        std::vector<vec3> vertices;
        std::vector<vec3> normals;
        
        std::string line;
        vec3 v;
        int a, b;
        int c, d;
        int e, f;
        
        glNewList(id, GL_COMPILE);
        
        glBegin(GL_TRIANGLES);
        
        while(!file.eof()){
            std::getline(file, line);
            
            if(line[0] == 'v'){
                if(line[1] == 'n'){
                    std::sscanf(line.c_str(), "vn %f %f %f\n", &v[0], &v[1], &v[2]);
                    normals.push_back(v);
                }
                else{
                    std::sscanf(line.c_str(), "v %f %f %f\n", &v[0], &v[1], &v[2]);
                    vertices.push_back(v);
                }
            }
            else if(line[0] == 'f'){
                std::sscanf(line.c_str(), "f %i//%i %i//%i %i//%i\n", &a, &b, &c, &d, &e, &f);
                
                
                
                glVertex3fv(vertices[a - 1]);
                glNormal3fv(vertices[b - 1]);
                
                glVertex3fv(vertices[c - 1]);
                glNormal3fv(vertices[d - 1]);
                
                glVertex3fv(vertices[e - 1]);
                glNormal3fv(vertices[f - 1]);
            }
        }
        
        glEnd();
        
        glEndList();
        
        file.close();
        
        return id;
    }