/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

//$Id: envelope.hpp 39 2005-04-10 20:39:53Z pavlenko $

#ifndef ENVELOPE_HPP
#define ENVELOPE_HPP

#include "config.hpp"
#include "coord.hpp"

namespace mapnik
{

	template <class T> class MAPNIK_DECL Envelope
    {
    public:
	typedef Envelope<T> EnvelopeType;
    private:
	T minx_;
	T miny_;
	T maxx_;
	T maxy_;
    public:
	Envelope();
	Envelope(T minx,T miny,T maxx,T maxy);
	Envelope(const coord<T,2>& c0,const coord<T,2>& c1);
	Envelope(const EnvelopeType& rhs);
	T minx() const;
	T miny() const;
	T maxx() const;
	T maxy() const;
	T width() const;
	T height() const;
	void width(T w);
	void height(T h);
	coord<T,2> center() const;
	void expand_to_include(T x,T y);
	void expand_to_include(const coord<T,2>& c);
	void expand_to_include(const EnvelopeType& other);
	bool contains(const coord<T,2> &c) const;
	bool contains(T x,T y) const;
	bool contains(const EnvelopeType &other) const;
	bool intersects(const coord<T,2> &c) const;
	bool intersects(T x,T y) const;
	bool intersects(const EnvelopeType &other) const;
	EnvelopeType intersect(const EnvelopeType& other) const;
	bool operator==(const EnvelopeType &other) const;
	void re_center(T cx,T cy);
	void init(T x0,T y0,T x1,T y1);
    };
    
    template <class charT,class traits,class T>
    inline std::basic_ostream<charT,traits>&
    operator << (std::basic_ostream<charT,traits>& out,
		 const Envelope<T>& e)
    {
        std::basic_ostringstream<charT,traits> s;
        s.copyfmt(out);
        s.width(0);
        s<<"Envelope("<<e.minx()<<","<<e.miny()<<","<<e.maxx()<<","<<e.maxy()<<")";
        out << s.str();
        return out;
    }
}
#endif // ENVELOPE_HPP