1 /*****************************************************************************
3 Header: FGTemperatureItem.h
4 Author: Christian Mayer
7 ---------- Copyright (C) 1999 Christian Mayer (vader@t-online.de) ----------
9 This program is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free Software
11 Foundation; either version 2 of the License, or (at your option) any later
14 This program is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 You should have received a copy of the GNU General Public License along with
20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21 Place - Suite 330, Boston, MA 02111-1307, USA.
23 Further information about the GNU General Public License can also be found on
24 the world wide web at http://www.gnu.org.
26 FUNCTIONAL DESCRIPTION
27 ------------------------------------------------------------------------------
28 Temperature item that is stored in the micro weather class
31 ------------------------------------------------------------------------------
32 28.05.1999 Christian Mayer Created
33 16.06.1999 Durk Talsma Portability for Linux
34 20.06.1999 Christian Mayer added lots of consts
35 10.10.1999 Christian Mayer added mutable for gcc 2.95 portability
36 11.10.1999 Christian Mayer changed set<> to map<> on Bernie Bright's
38 *****************************************************************************/
40 /****************************************************************************/
42 /****************************************************************************/
43 #ifndef FGTemperatureItem_H
44 #define FGTemperatureItem_H
46 /****************************************************************************/
48 /****************************************************************************/
49 #include "FGWeatherDefs.h"
51 // for the case that mutable isn't supported:
52 #include <simgear/compiler.h>
54 /****************************************************************************/
56 /****************************************************************************/
57 class FGTemperatureItem;
58 FGTemperatureItem operator-(const FGTemperatureItem& arg);
60 /****************************************************************************/
61 /* CLASS DECLARATION */
62 /****************************************************************************/
63 class FGTemperatureItem
66 mutable WeatherPrecision value;
72 FGTemperatureItem(const WeatherPrecision& a, const WeatherPrecision& v) {alt = a; value = v;}
73 FGTemperatureItem(const WeatherPrecision& v) {alt = 0.0; value = v;}
74 FGTemperatureItem() {alt = 0.0; value = (WeatherPrecision)FG_WEATHER_DEFAULT_TEMPERATURE;}
76 WeatherPrecision getValue() const { return value; };
77 WeatherPrecision getAlt() const { return alt; };
79 void setAlt (WeatherPrecision x) { alt = x; }
80 void setValue(WeatherPrecision x) { value = x; }
82 FGTemperatureItem& operator*= (const WeatherPrecision& arg);
83 FGTemperatureItem& operator+= (const FGTemperatureItem& arg);
84 FGTemperatureItem& operator-= (const FGTemperatureItem& arg);
86 friend bool operator<(const FGTemperatureItem& arg1, const FGTemperatureItem& arg2 );
87 friend FGTemperatureItem operator-(const FGTemperatureItem& arg);
91 inline FGTemperatureItem& FGTemperatureItem::operator*= (const WeatherPrecision& arg)
97 inline FGTemperatureItem& FGTemperatureItem::operator+= (const FGTemperatureItem& arg)
102 inline FGTemperatureItem& FGTemperatureItem::operator-= (const FGTemperatureItem& arg)
109 inline FGTemperatureItem operator-(const FGTemperatureItem& arg)
111 return FGTemperatureItem(arg.alt, -arg.value);
117 /****************************************************************************/
118 #endif /*FGTemperatureItem_H*/