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/* ----------------------------------------------------------------------- *
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/* ----------------------------------------------------------------------- *
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 * This file is part of GEL, http://www.imm.dtu.dk/GEL
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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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 * 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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 * For license and list of authors, see ../../doc/intro.pdf
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 * ----------------------------------------------------------------------- */
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 * ----------------------------------------------------------------------- */
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#include "obj_save.h"
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#include "obj_save.h"
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#include <fstream>
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#include <fstream>
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#include <iostream>
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#include <iostream>
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#include <string>
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#include <string>
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#include <vector>
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#include <vector>
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#include "../CGLA/Vec3f.h"
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#include "../CGLA/Vec3f.h"
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#include "Manifold.h"
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#include "Manifold.h"
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#include "AttributeVector.h"
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#include "AttributeVector.h"
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namespace HMesh
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namespace HMesh
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{
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{
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    using namespace std;
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    using namespace std;
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    using namespace CGLA;
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    using namespace CGLA;
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    bool obj_save(const string& filename, Manifold& m)
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    bool obj_save(const string& filename, Manifold& m)
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    {
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    {
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        ofstream os(filename.data());
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        ofstream os(filename.data());
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        if(os.bad())
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        if(os.bad())
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            return false;
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            return false;
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        VertexAttributeVector<int> vmap;
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        VertexAttributeVector<int> vmap;
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        int k = 0;
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        int k = 0;
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        for(VertexIDIterator v = m.vertices_begin(); v != m.vertices_end(); ++v){
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        for(VertexIDIterator v = m.vertices_begin(); v != m.vertices_end(); ++v){
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            Vec3d p = m.pos(*v);
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            Vec3d p = m.pos(*v);
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            os << "v "<< p[0] << " " << p[1] << " " << p[2] << "\n";
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            os << "v "<< p[0] << " " << p[1] << " " << p[2] << "\n";
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            vmap[*v] = k++;
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            vmap[*v] = k++;
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        }
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        }
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        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){
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        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f){
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            vector<int> verts;
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            vector<int> verts;
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            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
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            for(Walker w = m.walker(*f); !w.full_circle(); w = w.circulate_face_ccw()){
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                int idx = vmap[w.vertex()];
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                int idx = vmap[w.vertex()];
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                assert(static_cast<size_t>(idx) < m.no_vertices());
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                assert(static_cast<size_t>(idx) < m.no_vertices());
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                // move subscript range from 0..size-1 to 1..size according to OBJ standards
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                // move subscript range from 0..size-1 to 1..size according to OBJ standards
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                verts.push_back(idx + 1);
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                verts.push_back(idx + 1);
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            }
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            }
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			os << "f ";
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			os << "f ";
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            for(size_t i = 0; i < verts.size() ; ++i){
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            for(size_t i = 0; i < verts.size() ; ++i){
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                os << verts[i] << " ";
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                os << verts[i];
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                if (i+1==verts.size())
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                    break;
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                os << " ";
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            }
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            }
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			os<<endl;
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			os<<endl;
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        }
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        }
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        return true;
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        return true;
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    }
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    }
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}
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}