1 /*******************************************************************************
3 Header: FGCoefficient.h
7 ------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
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.
27 --------------------------------------------------------------------------------
30 ********************************************************************************
32 *******************************************************************************/
34 #ifndef FGCOEFFICIENT_H
35 #define FGCOEFFICIENT_H
37 /*******************************************************************************
39 *******************************************************************************/
42 # include <simgear/compiler.h>
47 #include "FGConfigFile.h"
50 /*******************************************************************************
52 *******************************************************************************/
54 #define ID_COEFFICIENT "$Header"
56 /*******************************************************************************
58 *******************************************************************************/
71 /*******************************************************************************
72 COMMENTS, REFERENCES, and NOTES
73 ********************************************************************************
75 This class models the stability derivative coefficient lookup tables or
76 equations. Note that the coefficients need not be calculated each delta-t.
78 ********************************************************************************
80 *******************************************************************************/
86 typedef vector <eParam> MultVec;
87 enum Type {UNKNOWN, VALUE, VECTOR, TABLE, EQUATION};
96 eParam LookupR, LookupC;
100 float SD; // Actual stability derivative (or other coefficient) value
104 FGAtmosphere* Atmosphere;
106 FGAircraft* Aircraft;
107 FGTranslation* Translation;
108 FGRotation* Rotation;
109 FGPosition* Position;
110 FGAuxiliary* Auxiliary;
113 bool DeAllocate(void);
114 bool Allocate(int, int);
117 FGCoefficient(FGFDMExec*, FGConfigFile*);
118 ~FGCoefficient(void);
120 float Value(float, float);
123 float TotalValue(void);
124 inline string Getname(void) {return name;}
125 inline float GetSD(void) {return SD;}
126 inline MultVec Getmultipliers(void) {return multipliers;}
131 /******************************************************************************/