vec2ext.h
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	#pragma once

	#ifndef __VEC2EXT_H__
	#define __VEC2EXT_H__

	#define _USE_VECTOR_OSTREAM
	#include "symbasic/svector.h"

	#include <istream>

	// two dimensional vector definition
	typedef SVector<double, 2> Vec2D;

	/*
	* Allows to load any kind of bi-dimensional vectors
	* using the form (x, y)
	*
	* Example: (2, 3)
	*
	* for SVector declaration, take a look to "symbasic/svector.h"
	*/
	template<class T>
	std::istream& operator>>(std::istream& is, SVector<T, 2>& v)
	{
	/*char delim;
	is >> std::skipws;
	is >> delim;

	if (delim != '(')
	throw '(';

	is >> v[0];

	is >> delim;

	if (delim != ',')
	throw ',';

	is >> v[1];

	is >> delim;

	if (delim != ')')
	throw ')';*/

	return regex::parse(is, regex::term::round, v[0], v[1]);
	}

	#endif