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More misc. tweaks for rpk make merge.
[flightgear.git] / FDM / flight.h
1 /**************************************************************************
2  * flight.h -- define shared flight model parameters
3  *
4  * Written by Curtis Olson, started May 1997.
5  *
6  * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of the
11  * License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  * $Id$
23  * (Log is kept at end of this file)
24  **************************************************************************/
25
26
27 #ifndef FLIGHT_H
28 #define FLIGHT_H
29
30
31 #include <Flight/Slew/slew.h>
32 /* #include <Flight/LaRCsim/ls_interface.h> */
33
34
35 /* Define the various supported flight models (most not yet implemented) */
36 #define FG_LARCSIM     0
37 #define FG_ACM         1
38 #define FG_HELICOPTER  2
39 #define FG_AUTOGYRO    3
40 #define FG_BALLOON     4
41 #define FG_PARACHUTE   5
42 #define FG_SLEW        6
43 #define FG_EXTERN_GPS  7
44 #define FG_EXTERN_NET  8
45
46
47 typedef double FG_VECTOR_3[3];
48
49 /* This is based heavily on LaRCsim/ls_generic.h */
50 struct fgFLIGHT {
51
52 /*================== Mass properties and geometry values ==================*/
53
54     double    mass, i_xx, i_yy, i_zz, i_xz; /* Inertias */
55 #define FG_Mass                    f->mass
56 #define FG_I_xx                    f->i_xx
57 #define FG_I_yy                    f->i_yy
58 #define FG_I_zz                    f->i_zz
59 #define FG_I_xz                    f->i_xz
60
61     FG_VECTOR_3    d_pilot_rp_body_v;      /* Pilot location rel to ref pt */
62 #define FG_D_pilot_rp_body_v       f->d_pilot_rp_body_v
63 #define FG_Dx_pilot                f->d_pilot_rp_body_v[0]
64 #define FG_Dy_pilot                f->d_pilot_rp_body_v[1]
65 #define FG_Dz_pilot                f->d_pilot_rp_body_v[2]
66
67     FG_VECTOR_3    d_cg_rp_body_v; /* CG position w.r.t. ref. point */
68 #define FG_D_cg_rp_body_v          f->d_cg_rp_body_v
69 #define FG_Dx_cg                   f->d_cg_rp_body_v[0]
70 #define FG_Dy_cg                   f->d_cg_rp_body_v[1]
71 #define FG_Dz_cg                   f->d_cg_rp_body_v[2]
72
73 /*================================ Forces =================================*/
74
75     FG_VECTOR_3    f_body_total_v;
76 #define FG_F_body_total_v          f->f_body_total_v
77 #define FG_F_X                     f->f_body_total_v[0]
78 #define FG_F_Y                     f->f_body_total_v[1]
79 #define FG_F_Z                     f->f_body_total_v[2]
80
81     FG_VECTOR_3    f_local_total_v;
82 #define FG_F_local_total_v         f->f_local_total_v
83 #define FG_F_north                 f->f_local_total_v[0]
84 #define FG_F_east                  f->f_local_total_v[1]
85 #define FG_F_down                  f->f_local_total_v[2]
86
87     FG_VECTOR_3    f_aero_v;
88 #define FG_F_aero_v                f->f_aero_v
89 #define FG_F_X_aero                f->f_aero_v[0]
90 #define FG_F_Y_aero                f->f_aero_v[1]
91 #define FG_F_Z_aero                f->f_aero_v[2]
92
93     FG_VECTOR_3    f_engine_v;
94 #define FG_F_engine_v              f->f_engine_v
95 #define FG_F_X_engine              f->f_engine_v[0]
96 #define FG_F_Y_engine              f->f_engine_v[1]
97 #define FG_F_Z_engine              f->f_engine_v[2]
98
99     FG_VECTOR_3    f_gear_v;
100 #define FG_F_gear_v                f->f_gear_v
101 #define FG_F_X_gear                f->f_gear_v[0]
102 #define FG_F_Y_gear                f->f_gear_v[1]
103 #define FG_F_Z_gear                f->f_gear_v[2]
104
105 /*================================ Moments ================================*/
106
107     FG_VECTOR_3    m_total_rp_v;
108 #define FG_M_total_rp_v            f->m_total_rp_v
109 #define FG_M_l_rp                  f->m_total_rp_v[0]
110 #define FG_M_m_rp                  f->m_total_rp_v[1]
111 #define FG_M_n_rp                  f->m_total_rp_v[2]
112
113     FG_VECTOR_3    m_total_cg_v;
114 #define FG_M_total_cg_v            f->m_total_cg_v
115 #define FG_M_l_cg                  f->m_total_cg_v[0]
116 #define FG_M_m_cg                  f->m_total_cg_v[1]
117 #define FG_M_n_cg                  f->m_total_cg_v[2]
118
119     FG_VECTOR_3    m_aero_v;
120 #define FG_M_aero_v                f->m_aero_v
121 #define FG_M_l_aero                f->m_aero_v[0]
122 #define FG_M_m_aero                f->m_aero_v[1]
123 #define FG_M_n_aero                f->m_aero_v[2]
124
125     FG_VECTOR_3    m_engine_v;
126 #define FG_M_engine_v              f->m_engine_v
127 #define FG_M_l_engine              f->m_engine_v[0]
128 #define FG_M_m_engine              f->m_engine_v[1]
129 #define FG_M_n_engine              f->m_engine_v[2]
130
131     FG_VECTOR_3    m_gear_v;
132 #define FG_M_gear_v                f->m_gear_v
133 #define FG_M_l_gear                f->m_gear_v[0]
134 #define FG_M_m_gear                f->m_gear_v[1]
135 #define FG_M_n_gear                f->m_gear_v[2]
136
137 /*============================== Accelerations ============================*/
138
139     FG_VECTOR_3    v_dot_local_v;
140 #define FG_V_dot_local_v           f->v_dot_local_v
141 #define FG_V_dot_north             f->v_dot_local_v[0]
142 #define FG_V_dot_east              f->v_dot_local_v[1]
143 #define FG_V_dot_down              f->v_dot_local_v[2]
144
145     FG_VECTOR_3    v_dot_body_v;
146 #define FG_V_dot_body_v            f->v_dot_body_v
147 #define FG_U_dot_body              f->v_dot_body_v[0]
148 #define FG_V_dot_body              f->v_dot_body_v[1]
149 #define FG_W_dot_body              f->v_dot_body_v[2]
150
151     FG_VECTOR_3    a_cg_body_v;
152 #define FG_A_cg_body_v             f->a_cg_body_v
153 #define FG_A_X_cg                  f->a_cg_body_v[0]
154 #define FG_A_Y_cg                  f->a_cg_body_v[1]
155 #define FG_A_Z_cg                  f->a_cg_body_v[2]
156
157     FG_VECTOR_3    a_pilot_body_v;
158 #define FG_A_pilot_body_v          f->a_pilot_body_v
159 #define FG_A_X_pilot               f->a_pilot_body_v[0]
160 #define FG_A_Y_pilot               f->a_pilot_body_v[1]
161 #define FG_A_Z_pilot               f->a_pilot_body_v[2]
162
163     FG_VECTOR_3    n_cg_body_v;
164 #define FG_N_cg_body_v             f->n_cg_body_v
165 #define FG_N_X_cg                  f->n_cg_body_v[0]
166 #define FG_N_Y_cg                  f->n_cg_body_v[1]
167 #define FG_N_Z_cg                  f->n_cg_body_v[2]
168
169     FG_VECTOR_3    n_pilot_body_v;
170 #define FG_N_pilot_body_v          f->n_pilot_body_v
171 #define FG_N_X_pilot               f->n_pilot_body_v[0]
172 #define FG_N_Y_pilot               f->n_pilot_body_v[1]
173 #define FG_N_Z_pilot               f->n_pilot_body_v[2]
174
175     FG_VECTOR_3    omega_dot_body_v;
176 #define FG_Omega_dot_body_v        f->omega_dot_body_v
177 #define FG_P_dot_body              f->omega_dot_body_v[0]
178 #define FG_Q_dot_body              f->omega_dot_body_v[1]
179 #define FG_R_dot_body              f->omega_dot_body_v[2]
180
181
182 /*============================== Velocities ===============================*/
183
184     FG_VECTOR_3    v_local_v;
185 #define FG_V_local_v               f->v_local_v
186 #define FG_V_north                 f->v_local_v[0]
187 #define FG_V_east                  f->v_local_v[1]
188 #define FG_V_down                  f->v_local_v[2]
189
190     FG_VECTOR_3    v_local_rel_ground_v; /* V rel w.r.t. earth surface   */
191 #define FG_V_local_rel_ground_v    f->v_local_rel_ground_v
192 #define FG_V_north_rel_ground      f->v_local_rel_ground_v[0]
193 #define FG_V_east_rel_ground       f->v_local_rel_ground_v[1]
194 #define FG_V_down_rel_ground       f->v_local_rel_ground_v[2]
195
196     FG_VECTOR_3    v_local_airmass_v;   /* velocity of airmass (steady winds) */
197 #define FG_V_local_airmass_v       f->v_local_airmass_v
198 #define FG_V_north_airmass         f->v_local_airmass_v[0]
199 #define FG_V_east_airmass          f->v_local_airmass_v[1]
200 #define FG_V_down_airmass          f->v_local_airmass_v[2]
201
202     FG_VECTOR_3    v_local_rel_airmass_v;  /* velocity of veh. relative to */
203                                            /* airmass */
204 #define FG_V_local_rel_airmass_v   f->v_local_rel_airmass_v
205 #define FG_V_north_rel_airmass     f->v_local_rel_airmass_v[0]
206 #define FG_V_east_rel_airmass      f->v_local_rel_airmass_v[1]
207 #define FG_V_down_rel_airmass      f->v_local_rel_airmass_v[2]
208
209     FG_VECTOR_3    v_local_gust_v; /* linear turbulence components, L frame */
210 #define FG_V_local_gust_v          f->v_local_gust_v
211 #define FG_U_gust                  f->v_local_gust_v[0]
212 #define FG_V_gust                  f->v_local_gust_v[1]
213 #define FG_W_gust                  f->v_local_gust_v[2]
214
215     FG_VECTOR_3    v_wind_body_v;  /* Wind-relative velocities in body axis */
216 #define FG_V_wind_body_v           f->v_wind_body_v
217 #define FG_U_body                  f->v_wind_body_v[0]
218 #define FG_V_body                  f->v_wind_body_v[1]
219 #define FG_W_body                  f->v_wind_body_v[2]
220
221     double    v_rel_wind, v_true_kts, v_rel_ground, v_inertial;
222     double    v_ground_speed, v_equiv, v_equiv_kts;
223     double    v_calibrated, v_calibrated_kts;
224 #define FG_V_rel_wind              f->v_rel_wind
225 #define FG_V_true_kts              f->v_true_kts
226 #define FG_V_rel_ground            f->v_rel_ground
227 #define FG_V_inertial              f->v_inertial
228 #define FG_V_ground_speed          f->v_ground_speed
229 #define FG_V_equiv                 f->v_equiv
230 #define FG_V_equiv_kts             f->v_equiv_kts
231 #define FG_V_calibrated            f->v_calibrated
232 #define FG_V_calibrated_kts        f->v_calibrated_kts
233
234     FG_VECTOR_3    omega_body_v;   /* Angular B rates      */
235 #define FG_Omega_body_v            f->omega_body_v
236 #define FG_P_body                  f->omega_body_v[0]
237 #define FG_Q_body                  f->omega_body_v[1]
238 #define FG_R_body                  f->omega_body_v[2]
239
240     FG_VECTOR_3    omega_local_v;  /* Angular L rates      */
241 #define FG_Omega_local_v           f->omega_local_v
242 #define FG_P_local                 f->omega_local_v[0]
243 #define FG_Q_local                 f->omega_local_v[1]
244 #define FG_R_local                 f->omega_local_v[2]
245
246     FG_VECTOR_3    omega_total_v;  /* Diff btw B & L       */
247 #define FG_Omega_total_v           f->omega_total_v
248 #define FG_P_total                 f->omega_total_v[0]
249 #define FG_Q_total                 f->omega_total_v[1]
250 #define FG_R_total                 f->omega_total_v[2]
251
252     FG_VECTOR_3    euler_rates_v;
253 #define FG_Euler_rates_v           f->euler_rates_v
254 #define FG_Phi_dot                 f->euler_rates_v[0]
255 #define FG_Theta_dot               f->euler_rates_v[1]
256 #define FG_Psi_dot                 f->euler_rates_v[2]
257
258     FG_VECTOR_3    geocentric_rates_v;     /* Geocentric linear velocities */
259 #define FG_Geocentric_rates_v      f->geocentric_rates_v
260 #define FG_Latitude_dot            f->geocentric_rates_v[0]
261 #define FG_Longitude_dot           f->geocentric_rates_v[1]
262 #define FG_Radius_dot              f->geocentric_rates_v[2]
263
264 /*=============================== Positions ===============================*/
265
266     FG_VECTOR_3    geocentric_position_v;
267 #define FG_Geocentric_position_v   f->geocentric_position_v
268 #define FG_Lat_geocentric          f->geocentric_position_v[0]
269 #define FG_Lon_geocentric          f->geocentric_position_v[1]
270 #define FG_Radius_to_vehicle       f->geocentric_position_v[2]
271
272     FG_VECTOR_3    geodetic_position_v;
273 #define FG_Geodetic_position_v     f->geodetic_position_v
274 #define FG_Latitude                f->geodetic_position_v[0]
275 #define FG_Longitude               f->geodetic_position_v[1]
276 #define FG_Altitude                f->geodetic_position_v[2]
277
278     FG_VECTOR_3    euler_angles_v;
279 #define FG_Euler_angles_v          f->euler_angles_v
280 #define FG_Phi                     f->euler_angles_v[0]
281 #define FG_Theta                   f->euler_angles_v[1]
282 #define FG_Psi                     f->euler_angles_v[2]
283
284 /*======================= Miscellaneous quantities ========================*/
285
286     double    t_local_to_body_m[3][3];    /* Transformation matrix L to B */
287 #define FG_T_local_to_body_m       f->t_local_to_body_m
288 #define FG_T_local_to_body_11      f->t_local_to_body_m[0][0]
289 #define FG_T_local_to_body_12      f->t_local_to_body_m[0][1]
290 #define FG_T_local_to_body_13      f->t_local_to_body_m[0][2]
291 #define FG_T_local_to_body_21      f->t_local_to_body_m[1][0]
292 #define FG_T_local_to_body_22      f->t_local_to_body_m[1][1]
293 #define FG_T_local_to_body_23      f->t_local_to_body_m[1][2]
294 #define FG_T_local_to_body_31      f->t_local_to_body_m[2][0]
295 #define FG_T_local_to_body_32      f->t_local_to_body_m[2][1]
296 #define FG_T_local_to_body_33      f->t_local_to_body_m[2][2]
297
298     double    gravity;            /* Local acceleration due to G  */
299 #define FG_Gravity                 f->gravity
300
301     double    centrifugal_relief; /* load factor reduction due to speed */
302 #define FG_Centrifugal_relief      f->centrifugal_relief
303
304     double    alpha, beta, alpha_dot, beta_dot;   /* in radians   */
305 #define FG_Alpha                   f->alpha
306 #define FG_Beta                    f->beta
307 #define FG_Alpha_dot               f->alpha_dot
308 #define FG_Beta_dot                f->beta_dot
309
310     double    cos_alpha, sin_alpha, cos_beta, sin_beta;
311 #define FG_Cos_alpha               f->cos_alpha
312 #define FG_Sin_alpha               f->sin_alpha
313 #define FG_Cos_beta                f->cos_beta
314 #define FG_Sin_beta                f->sin_beta
315
316     double    cos_phi, sin_phi, cos_theta, sin_theta, cos_psi, sin_psi;
317 #define FG_Cos_phi                 f->cos_phi
318 #define FG_Sin_phi                 f->sin_phi
319 #define FG_Cos_theta               f->cos_theta
320 #define FG_Sin_theta               f->sin_theta
321 #define FG_Cos_psi                 f->cos_psi
322 #define FG_Sin_psi                 f->sin_psi
323
324     double    gamma_vert_rad, gamma_horiz_rad;    /* Flight path angles   */
325 #define FG_Gamma_vert_rad          f->gamma_vert_rad
326 #define FG_Gamma_horiz_rad         f->gamma_horiz_rad
327
328     double    sigma, density, v_sound, mach_number;
329 #define FG_Sigma                   f->sigma
330 #define FG_Density                 f->density
331 #define FG_V_sound                 f->v_sound
332 #define FG_Mach_number             f->mach_number
333
334     double    static_pressure, total_pressure, impact_pressure;
335     double    dynamic_pressure;
336 #define FG_Static_pressure         f->static_pressure
337 #define FG_Total_pressure          f->total_pressure
338 #define FG_Impact_pressure         f->impact_pressure
339 #define FG_Dynamic_pressure        f->dynamic_pressure
340
341     double    static_temperature, total_temperature;
342 #define FG_Static_temperature      f->static_temperature
343 #define FG_Total_temperature       f->total_temperature
344
345     double    sea_level_radius, earth_position_angle;
346 #define FG_Sea_level_radius        f->sea_level_radius
347 #define FG_Earth_position_angle    f->earth_position_angle
348
349     double    runway_altitude, runway_latitude, runway_longitude;
350     double    runway_heading;
351 #define FG_Runway_altitude         f->runway_altitude
352 #define FG_Runway_latitude         f->runway_latitude
353 #define FG_Runway_longitude        f->runway_longitude
354 #define FG_Runway_heading          f->runway_heading
355
356     double    radius_to_rwy;
357 #define FG_Radius_to_rwy           f->radius_to_rwy
358
359     FG_VECTOR_3    d_cg_rwy_local_v;       /* CG rel. to rwy in local coords */
360 #define FG_D_cg_rwy_local_v        f->d_cg_rwy_local_v
361 #define FG_D_cg_north_of_rwy       f->d_cg_rwy_local_v[0]
362 #define FG_D_cg_east_of_rwy        f->d_cg_rwy_local_v[1]
363 #define FG_D_cg_above_rwy          f->d_cg_rwy_local_v[2]
364
365     FG_VECTOR_3    d_cg_rwy_rwy_v; /* CG relative to rwy, in rwy coordinates */
366 #define FG_D_cg_rwy_rwy_v          f->d_cg_rwy_rwy_v
367 #define FG_X_cg_rwy                f->d_cg_rwy_rwy_v[0]
368 #define FG_Y_cg_rwy                f->d_cg_rwy_rwy_v[1]
369 #define FG_H_cg_rwy                f->d_cg_rwy_rwy_v[2]
370
371     FG_VECTOR_3    d_pilot_rwy_local_v;  /* pilot rel. to rwy in local coords */
372 #define FG_D_pilot_rwy_local_v     f->d_pilot_rwy_local_v
373 #define FG_D_pilot_north_of_rwy    f->d_pilot_rwy_local_v[0]
374 #define FG_D_pilot_east_of_rwy     f->d_pilot_rwy_local_v[1]
375 #define FG_D_pilot_above_rwy       f->d_pilot_rwy_local_v[2]
376
377     FG_VECTOR_3   d_pilot_rwy_rwy_v;   /* pilot rel. to rwy, in rwy coords. */
378 #define FG_D_pilot_rwy_rwy_v       f->d_pilot_rwy_rwy_v
379 #define FG_X_pilot_rwy             f->d_pilot_rwy_rwy_v[0]
380 #define FG_Y_pilot_rwy             f->d_pilot_rwy_rwy_v[1]
381 #define FG_H_pilot_rwy             f->d_pilot_rwy_rwy_v[2]
382
383 };
384
385
386 /* General interface to the flight model routines */
387
388 /* Initialize the flight model parameters */
389 int fgFlightModelInit(int model, struct fgFLIGHT *f, double dt);
390
391 /* Run multiloop iterations of the flight model */
392 int fgFlightModelUpdate(int model, struct fgFLIGHT *f, int multiloop);
393
394
395 #endif /* FLIGHT_H */
396
397
398 /* $Log$
399 /* Revision 1.11  1998/01/19 19:27:03  curt
400 /* Merged in make system changes from Bob Kuehne <rpk@sgi.com>
401 /* This should simplify things tremendously.
402 /*
403  * Revision 1.10  1997/12/10 22:37:43  curt
404  * Prepended "fg" on the name of all global structures that didn't have it yet.
405  * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
406  *
407  * Revision 1.9  1997/09/04 02:17:33  curt
408  * Shufflin' stuff.
409  *
410  * Revision 1.8  1997/08/27 03:30:06  curt
411  * Changed naming scheme of basic shared structures.
412  *
413  * Revision 1.7  1997/07/23 21:52:19  curt
414  * Put comments around the text after an #endif for increased portability.
415  *
416  * Revision 1.6  1997/06/21 17:52:22  curt
417  * Continue directory shuffling ... everything should be compilable/runnable
418  * again.
419  *
420  * Revision 1.5  1997/06/21 17:12:49  curt
421  * Capitalized subdirectory names.
422  *
423  * Revision 1.4  1997/05/29 22:39:57  curt
424  * Working on incorporating the LaRCsim flight model.
425  *
426  * Revision 1.3  1997/05/29 02:32:25  curt
427  * Starting to build generic flight model interface.
428  *
429  * Revision 1.2  1997/05/23 15:40:37  curt
430  * Added GNU copyright headers.
431  *
432  * Revision 1.1  1997/05/16 16:04:45  curt
433  * Initial revision.
434  *
435  */