/*
 * © Copyright 2014 – Urheberrechtshinweis
 * Alle Rechte vorbehalten / All Rights Reserved
 *
 * Programmcode ist urheberrechtlich geschuetzt.
 * Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
 * Keine Verwendung ohne explizite Genehmigung.
 * (vgl. § 106 ff UrhG / § 97 UrhG)
 */

#ifndef LENGTH_H
#define LENGTH_H




/**
 * unit independent length measurement
 */
template <typename T, int mul> struct Length {

private:

	const T val;

	/** delete empty ctor */
	Length() = delete;

	/** hidden value ctor */
	Length(const T val) : val(val) {;}

public:

	/** construct from mm */
	static Length mm(const T mm)	{return Length(mm * mul / 1000);}

	/** construct from cm */
	static Length cm(const T cm)	{return Length(cm * mul / 100);}

	/** construct from m */
	static Length m(const T m)		{return Length(m * mul / 1);}

public:

	/** get in mm */
	T mm() const	{return val * 1000 / mul;}

	/** get in cm */
	T cm() const	{return val * 100 / mul;}

	/** get in m */
	T m() const		{return val * 1 / mul;}

public:

	/** add the given length */
	Length operator + (const Length o) {return Length(m+o.m);}

	/** subtract the given length */
	Length operator - (const Length o) {return Length(m+o.m);}

};

/** float. internally stored in meters */
typedef Length<float, 1> LengthF;

/** int. internally stored in millimeters */
typedef Length<int, 1000> LengthI;

#endif // LENGTH_H