// ============================================================================
//
// Copyright (c) 1997 The CGAL Consortium
//
// This software and related documentation is part of an INTERNAL release
// of the Computational Geometry Algorithms Library (CGAL). It is not
// intended for general use.
//
// ----------------------------------------------------------------------------
//
// release       : 
// release_date  : 
//
// file          : include/CGAL/IO/Straight_2_stream.h
// source        : 
// revision      : 
// revision_date : 
// author(s)     : Oren Nechushtan <theoren@math.tau.ac.il>
//                 
//
//
// coordinator   : Tel-Aviv University (Dan Halperin <halperin@math.tau.ac.il>)
//
// Chapter       : 
// ============================================================================
#ifndef CGAL_IO_PM_STRAIGHT_2_STREAM_H
#define CGAL_IO_PM_STRAIGHT_2_STREAM_H

#ifndef CGAL_STRAIGHT_2_H
#include <CGAL/Straight_2.h>
#endif

#include <ostream>

CGAL_BEGIN_NAMESPACE

template <class R> 
std::ostream& operator<<(std::ostream& os,const Straight_2_<R>& cv)
{
	typedef Straight_2_<R> Straight;
	switch(cv.current_state())
	{
	case Straight::EMPTY:
	  return os;
	case Straight::POINT:
		{
			Point_2<R> p;
			cv.current(p);
			return os << p;
		}
	case Straight::SEGMENT:
		{
			Segment_2<R> seg;
			cv.current(seg);
			return os << seg;
		}
	case Straight::RAY:
		{
			Ray_2<R> ray;
			cv.current(ray);
			return os << ray;
		}
	case Straight::LINE:
		{
			Line_2<R> line;
			cv.current(line);
			return os << line;
		}
	}
	CGAL_assertion_msg(
		cv.current_state()==Straight::EMPTY||
		cv.current_state()==Straight::POINT||
		cv.current_state()==Straight::SEGMENT||
		cv.current_state()==Straight::RAY||
		cv.current_state()==Straight::LINE,
		"\nUnknown type in  leda_window& operator<<(leda_window& os,\
const Straight& cv)");
	return os;
}
template <class R> 
std::istream& operator>>(std::istream& os,const Straight_2_<R>& cv)
{
	typedef Straight_2_<R> Straight;
	switch(cv.current_state())
	{
	case Straight::EMPTY:
	  return os;
	case Straight::POINT:
		{
			Point_2<R> p;
			cv.current(p);
			return os >> p;
		}
	case Straight::SEGMENT:
		{
			Segment_2<R> seg;
			cv.current(seg);
			return os >> seg;
		}
	case Straight::RAY:
		{
			Ray_2<R> ray;
			cv.current(ray);
			return os >> ray;
		}
	case Straight::LINE:
		{
			Line_2<R> line;
			cv.current(line);
			return os >> line;
		}
	}
	CGAL_assertion_msg(
		cv.get_type()==Straight::EMPTY||
		cv.get_type()==Straight::POINT||
		cv.get_type()==Straight::SEGMENT||
		cv.get_type()==Straight::RAY||
		cv.get_type()==Straight::LINE,
		"\nUnknown type in  leda_window& operator>>(leda_window& os," 
		<< "const Straight& cv)");
	return os;
}

CGAL_END_NAMESPACE

#endif // CGAL_IO_PM_STRAIGHT_2_STREAM_H