ACE3/addons/weather/functions/fnc_calculateDewPoint.sqf
2015-05-16 21:10:34 +02:00

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/*
* Author: Ruthberg
*
* Calculates dew point based on temperature and relative humidity
*
* Arguments:
* 0: temperature - degrees celcius <NUMBER>
* 2: relativeHumidity - value between 0.0 and 1.0 <NUMBER>
*
* Return Value:
* 0: dew point <NUMBER>
*
* Return value:
* None
*/
#include "script_component.hpp"
#define __b 17.67
#define __c 243.5
PARAMS_2(_t,_rh);
if (_rh == 0) exitWith { CELSIUS(0) };
// Source: https://en.wikipedia.org/wiki/Dew_point
private ["_gamma"];
_gamma = ln(_rh) + (__b * _t) / (__c + _t);
(__c * _gamma) / (__b - _gamma)