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/*

 *  off_save.cpp

 *  GEL

 *

 *  Created by J. Andreas Bærentzen on 17/02/09.

 *  Copyright 2009 __MyCompanyName__. All rights reserved.

 *

 */

#include <fstream>

#include <iostream>

#include <string>

#include "off_save.h"

#include "HMesh/FaceCirculator.h"

namespace HMesh

{

	using namespace std;

	using namespace CGLA;

	using namespace HMesh;

	bool off_save(const std::string& filename, Manifold& m)

	{

		ofstream os(filename.data());

		if(os.bad()) return false;

		os << "OFF " << endl;

		os << m.no_vertices() << " " << m.no_faces() << " " << m.no_halfedges()/2 << endl;

		int k=0;

		vector<int> touched_vals(m.no_vertices());

		for(VertexIter vi = m.vertices_begin(); vi != m.vertices_end(); ++vi,++k)

		{

			touched_vals[k] = vi->touched;

			vi->touched = k;

			Vec3f p = vi->pos;

			os << p[0] << " " << p[1] << " " << p[2] << endl;

		}

		for(FaceIter fi = m.faces_begin();fi != m.faces_end(); ++fi)

		{

			std::vector<int> verts;

			for(FaceCirculator fc(fi);!fc.end();++fc)

			{

				verts.push_back(fc.get_vertex()->touched);

			}

			os << verts.size() << " ";

			for(size_t i=0;i<verts.size();++i)

			{

				os << verts[i] << " ";

			}

			os << "\n";

		}

		k=0;

		for(VertexIter vi = m.vertices_begin(); vi != m.vertices_end(); ++vi,++k)

			vi->touched = touched_vals[k];

		return true;

	}

}