| 1 | /* the Now and Obj typedefs.
|
|---|
| 2 | * also, a few miscellaneous constants and declarations.
|
|---|
| 3 | */
|
|---|
| 4 | #ifndef _CIRCUM_H
|
|---|
| 5 | #define _CIRCUM_H
|
|---|
| 6 |
|
|---|
| 7 | #define SPD (24.0*3600.0) /* seconds per day */
|
|---|
| 8 | #define MAU (1.4959787e11) /* m / au */
|
|---|
| 9 | #define LTAU 499.005 /* seconds light takes to travel 1 AU */
|
|---|
| 10 | #define ERAD (6.37816e6) /* earth equitorial radius, m */
|
|---|
| 11 | #define MRAD (1.740e6) /* moon equitorial radius, m */
|
|---|
| 12 | #define SRAD (6.95e8) /* sun equitorial radius, m */
|
|---|
| 13 | #define FTPM 3.28084 /* ft per m */
|
|---|
| 14 | #define ESAT_MAG 2 /* default satellite magnitude */
|
|---|
| 15 | #define FAST_SAT_RPD 0.25 /* max earth sat rev/day considered "fast" */
|
|---|
| 16 |
|
|---|
| 17 | #define EOD (-9786) /* special epoch flag: use epoch of date */
|
|---|
| 18 |
|
|---|
| 19 | /* info about the local observing circumstances and misc preferences */
|
|---|
| 20 | typedef struct {
|
|---|
| 21 | double n_mjd; /* modified Julian date, ie, days since
|
|---|
| 22 | * Jan 0.5 1900 (== 12 noon, Dec 30, 1899), utc.
|
|---|
| 23 | * enough precision to get well better than 1 second.
|
|---|
| 24 | * N.B. if not first member, must move NOMJD inits.
|
|---|
| 25 | */
|
|---|
| 26 | double n_lat; /* geographic (surface-normal) lat, >0 north, rads */
|
|---|
| 27 | double n_lng; /* longitude, >0 east, rads */
|
|---|
| 28 | double n_tz; /* time zone, hrs behind UTC */
|
|---|
| 29 | double n_temp; /* atmospheric temp, degrees C */
|
|---|
| 30 | double n_pressure; /* atmospheric pressure, mBar */
|
|---|
| 31 | double n_elev; /* elevation above sea level, earth radii */
|
|---|
| 32 | double n_dip; /* dip of sun below hzn at twilight, >0 below, rads */
|
|---|
| 33 | double n_epoch; /* desired precession display epoch as an mjd, or EOD */
|
|---|
| 34 | char n_tznm[8]; /* time zone name; 7 chars or less, always 0 at end */
|
|---|
| 35 | } Now;
|
|---|
| 36 |
|
|---|
| 37 | /* handy shorthands for fields in a Now pointer, np */
|
|---|
| 38 | #define mjd np->n_mjd
|
|---|
| 39 | #define lat np->n_lat
|
|---|
| 40 | #define lng np->n_lng
|
|---|
| 41 | #define tz np->n_tz
|
|---|
| 42 | #define temp np->n_temp
|
|---|
| 43 | #define pressure np->n_pressure
|
|---|
| 44 | #define elev np->n_elev
|
|---|
| 45 | #define dip np->n_dip
|
|---|
| 46 | #define epoch np->n_epoch
|
|---|
| 47 | #define tznm np->n_tznm
|
|---|
| 48 | #define mjed mm_mjed(np)
|
|---|
| 49 |
|
|---|
| 50 | /* structures to describe objects of various types.
|
|---|
| 51 | */
|
|---|
| 52 |
|
|---|
| 53 | /* magnitude values in two different systems */
|
|---|
| 54 | typedef struct {
|
|---|
| 55 | float m1, m2; /* either g/k or H/G, depending on... */
|
|---|
| 56 | int whichm; /* one of MAG_gk or MAG_HG */
|
|---|
| 57 | } Mag;
|
|---|
| 58 |
|
|---|
| 59 | /* whichm */
|
|---|
| 60 | #define MAG_HG 0 /* using 0 makes HG the initial default */
|
|---|
| 61 | #define MAG_gk 1
|
|---|
| 62 |
|
|---|
| 63 | /* we actually store magnitudes times this scale factor in a short int */
|
|---|
| 64 | #define MAGSCALE 100.0
|
|---|
| 65 | #define set_smag(op,m) ((op)->s_mag = (short)floor((m)*MAGSCALE + 0.5))
|
|---|
| 66 | #define set_fmag(op,m) ((op)->f_mag = (short)floor((m)*MAGSCALE + 0.5))
|
|---|
| 67 | #define get_mag(op) ((op)->s_mag / MAGSCALE)
|
|---|
| 68 |
|
|---|
| 69 | /* longest object name, including trailing '\0' */
|
|---|
| 70 | #define MAXNM 14
|
|---|
| 71 |
|
|---|
| 72 | /* Obj is a massive union.
|
|---|
| 73 | * many fields are in common so we use macros to make things a little easier.
|
|---|
| 74 | */
|
|---|
| 75 |
|
|---|
| 76 | typedef unsigned char ObjType_t;
|
|---|
| 77 | typedef unsigned char ObjAge_t;
|
|---|
| 78 |
|
|---|
| 79 | /* fields common to *all* structs in the Obj union.
|
|---|
| 80 | */
|
|---|
| 81 | #define OBJ_COMMON_FLDS \
|
|---|
| 82 | ObjType_t co_type; /* current object type; see flags, below */ \
|
|---|
| 83 | unsigned char co_flags;/* FUSER*... used by others */ \
|
|---|
| 84 | char co_name[MAXNM];/* name, including \0 */ \
|
|---|
| 85 | float co_ra; /* geo/topo app/mean ra, rads */ \
|
|---|
| 86 | float co_dec; /* geo/topo app/mean dec, rads */ \
|
|---|
| 87 | float co_gaera; /* geo apparent ra, rads */ \
|
|---|
| 88 | float co_gaedec; /* geo apparent dec, rads */ \
|
|---|
| 89 | double co_az; /* azimuth, >0 e of n, rads */ \
|
|---|
| 90 | double co_alt; /* altitude above topocentric horizon, rads */ \
|
|---|
| 91 | float co_elong; /* angular sep btwen obj and sun, >0 E, degs */ \
|
|---|
| 92 | float co_size; /* angular size, arc secs */ \
|
|---|
| 93 | short co_mag; /* visual magnitude * MAGSCALE */ \
|
|---|
| 94 | ObjAge_t co_age /* update aging code; see db.c */
|
|---|
| 95 |
|
|---|
| 96 | /* fields common to all solar system objects in the Obj union */
|
|---|
| 97 | #define OBJ_SOLSYS_FLDS \
|
|---|
| 98 | OBJ_COMMON_FLDS; /* all the fixed ones plus ... */ \
|
|---|
| 99 | float so_sdist; /* dist from object to sun, au */ \
|
|---|
| 100 | float so_edist; /* dist from object to earth, au */ \
|
|---|
| 101 | float so_hlong; /* heliocentric longitude, rads */ \
|
|---|
| 102 | float so_hlat; /* heliocentric latitude, rads */ \
|
|---|
| 103 | float so_phase /* phase, % */
|
|---|
| 104 |
|
|---|
| 105 |
|
|---|
| 106 | /* a generic object */
|
|---|
| 107 | typedef struct {
|
|---|
| 108 | OBJ_COMMON_FLDS;
|
|---|
| 109 | } ObjAny;
|
|---|
| 110 |
|
|---|
| 111 | /* a generic sol system object */
|
|---|
| 112 | typedef struct {
|
|---|
| 113 | OBJ_SOLSYS_FLDS;
|
|---|
| 114 | } ObjSS;
|
|---|
| 115 |
|
|---|
| 116 | /* basic Fixed object info.
|
|---|
| 117 | */
|
|---|
| 118 | typedef unsigned char byte;
|
|---|
| 119 | typedef struct {
|
|---|
| 120 | OBJ_COMMON_FLDS;
|
|---|
| 121 | char fo_class; /* object class -- see db.c:db_set_field() et al */
|
|---|
| 122 | char fo_spect[2]; /* spectral codes, if appropriate */
|
|---|
| 123 | byte fo_ratio; /* minor/major diameter ratio. use s/get_ratio() */
|
|---|
| 124 | byte fo_pa; /* position angle, E of N, rads. use s/get_pa() */
|
|---|
| 125 | float fo_epoch; /* epoch of f_RA/dec */
|
|---|
| 126 | float fo_ra; /* ra, rads, at given epoch */
|
|---|
| 127 | float fo_dec; /* dec, rads, at given epoch */
|
|---|
| 128 | } ObjF;
|
|---|
| 129 |
|
|---|
| 130 | #define fo_mag co_mag /* pseudonym for so_mag since it is not computed */
|
|---|
| 131 | #define fo_size co_size /* pseudonym for so_size since it is not computed */
|
|---|
| 132 |
|
|---|
| 133 | /* macros to pack/unpack some fields */
|
|---|
| 134 | #define SRSCALE 255.0 /* galaxy size ratio scale */
|
|---|
| 135 | #define PASCALE (255.0/(2*PI)) /* pos angle scale factor */
|
|---|
| 136 | #define get_ratio(op) ((int)(op)->f_ratio/SRSCALE)
|
|---|
| 137 | #define set_ratio(op,maj,min) ((op)->f_ratio = (byte)(((maj) > 0) \
|
|---|
| 138 | ? ((min)*SRSCALE/(double)(maj)+0.5) \
|
|---|
| 139 | : 0))
|
|---|
| 140 | #define get_pa(op) ((double)(op)->f_pa/PASCALE)
|
|---|
| 141 | #define set_pa(op,s) ((op)->f_pa = (byte)((s)*PASCALE + 0.5))
|
|---|
| 142 |
|
|---|
| 143 | #define NCLASSES 128 /* n potential fo_classes -- allow for all ASCII */
|
|---|
| 144 |
|
|---|
| 145 | /* basic planet object info */
|
|---|
| 146 | typedef struct {
|
|---|
| 147 | OBJ_SOLSYS_FLDS;
|
|---|
| 148 | int pl_code; /* one of the codes in astro.h */
|
|---|
| 149 | } ObjPl;
|
|---|
| 150 |
|
|---|
| 151 | /* basic info about an object in elliptical heliocentric orbit */
|
|---|
| 152 | typedef struct {
|
|---|
| 153 | OBJ_SOLSYS_FLDS;
|
|---|
| 154 | float eo_inc; /* inclination, degrees */
|
|---|
| 155 | float eo_Om; /* longitude of ascending node, degrees */
|
|---|
| 156 | float eo_om; /* argument of perihelion, degress */
|
|---|
| 157 | float eo_a; /* mean distance, aka,semi-maj axis,AU */
|
|---|
| 158 | float eo_e; /* eccentricity */
|
|---|
| 159 | float eo_M; /* mean anomaly, ie, degrees from perihelion at cepoch*/
|
|---|
| 160 | float eo_size; /* angular size, in arc seconds at 1 AU */
|
|---|
| 161 | double eo_cepoch; /* epoch date (M reference), as an mjd */
|
|---|
| 162 | double eo_epoch; /* equinox year (inc/Om/om reference), as an mjd. */
|
|---|
| 163 | Mag eo_mag; /* magnitude */
|
|---|
| 164 | } ObjE;
|
|---|
| 165 |
|
|---|
| 166 | /* basic info about an object in hyperbolic heliocentric orbit */
|
|---|
| 167 | typedef struct {
|
|---|
| 168 | OBJ_SOLSYS_FLDS;
|
|---|
| 169 | double ho_epoch; /* equinox year (inc/Om/om reference), as an mjd */
|
|---|
| 170 | double ho_ep; /* epoch of perihelion, as an mjd */
|
|---|
| 171 | float ho_inc; /* inclination, degs */
|
|---|
| 172 | float ho_Om; /* longitude of ascending node, degs */
|
|---|
| 173 | float ho_om; /* argument of perihelion, degs. */
|
|---|
| 174 | float ho_e; /* eccentricity */
|
|---|
| 175 | float ho_qp; /* perihelion distance, AU */
|
|---|
| 176 | float ho_g, ho_k; /* magnitude model coefficients */
|
|---|
| 177 | float ho_size; /* angular size, in arc seconds at 1 AU */
|
|---|
| 178 | } ObjH;
|
|---|
| 179 |
|
|---|
| 180 | /* basic info about an object in parabolic heliocentric orbit */
|
|---|
| 181 | typedef struct {
|
|---|
| 182 | OBJ_SOLSYS_FLDS;
|
|---|
| 183 | double po_epoch; /* reference epoch, as an mjd */
|
|---|
| 184 | double po_ep; /* epoch of perihelion, as an mjd */
|
|---|
| 185 | float po_inc; /* inclination, degs */
|
|---|
| 186 | float po_qp; /* perihelion distance, AU */
|
|---|
| 187 | float po_om; /* argument of perihelion, degs. */
|
|---|
| 188 | float po_Om; /* longitude of ascending node, degs */
|
|---|
| 189 | float po_g, po_k; /* magnitude model coefficients */
|
|---|
| 190 | float po_size; /* angular size, in arc seconds at 1 AU */
|
|---|
| 191 | } ObjP;
|
|---|
| 192 |
|
|---|
| 193 | /* basic earth satellite object info */
|
|---|
| 194 | typedef struct {
|
|---|
| 195 | OBJ_COMMON_FLDS;
|
|---|
| 196 | double eso_epoch; /* reference epoch, as an mjd */
|
|---|
| 197 | double eso_n; /* mean motion, rev/day
|
|---|
| 198 | * N.B. we need double due to a sensitive differencing
|
|---|
| 199 | * operation used to compute MeanAnomaly in
|
|---|
| 200 | * esat_main()/satellite.c.
|
|---|
| 201 | */
|
|---|
| 202 | float eso_inc; /* inclination, degs */
|
|---|
| 203 | float eso_raan; /* RA of ascending node, degs */
|
|---|
| 204 | float eso_e; /* eccentricity */
|
|---|
| 205 | float eso_ap; /* argument of perigee at epoch, degs */
|
|---|
| 206 | float eso_M; /* mean anomaly, ie, degrees from perigee at epoch */
|
|---|
| 207 | float eso_decay; /* orbit decay rate, rev/day^2 */
|
|---|
| 208 | float eso_drag; /* object drag coefficient, (earth radii)^-1 */
|
|---|
| 209 | int eso_orbit; /* integer orbit number of epoch */
|
|---|
| 210 |
|
|---|
| 211 | /* computed "sky" results unique to earth satellites */
|
|---|
| 212 | float ess_elev; /* height of satellite above sea level, m */
|
|---|
| 213 | float ess_range; /* line-of-site distance from observer to satellite, m*/
|
|---|
| 214 | float ess_rangev; /* rate-of-change of range, m/s */
|
|---|
| 215 | float ess_sublat; /* latitude below satellite, >0 north, rads */
|
|---|
| 216 | float ess_sublng; /* longitude below satellite, >0 east, rads */
|
|---|
| 217 | int ess_eclipsed;/* 1 if satellite is in earth's shadow, else 0 */
|
|---|
| 218 | } ObjES;
|
|---|
| 219 |
|
|---|
| 220 | typedef union {
|
|---|
| 221 | ObjAny any; /* these fields valid for all types */
|
|---|
| 222 | ObjSS anyss; /* these fields valid for all solar system types */
|
|---|
| 223 | ObjPl pl; /* planet */
|
|---|
| 224 | ObjF f; /* fixed object */
|
|---|
| 225 | ObjE e; /* object in heliocentric elliptical orbit */
|
|---|
| 226 | ObjH h; /* object in heliocentric hyperbolic trajectory */
|
|---|
| 227 | ObjP p; /* object in heliocentric parabolic trajectory */
|
|---|
| 228 | ObjES es; /* earth satellite */
|
|---|
| 229 | } Obj;
|
|---|
| 230 |
|
|---|
| 231 |
|
|---|
| 232 | /* for o_flags -- everybody must agree */
|
|---|
| 233 | #define FUSER0 0x01
|
|---|
| 234 | #define FUSER1 0x02
|
|---|
| 235 | #define FUSER2 0x04
|
|---|
| 236 | #define FUSER3 0x08
|
|---|
| 237 | #define FUSER4 0x10
|
|---|
| 238 | #define FUSER5 0x20
|
|---|
| 239 | #define FUSER6 0x40
|
|---|
| 240 | #define FUSER7 0x80
|
|---|
| 241 |
|
|---|
| 242 | /* mark an object as being a "field star" */
|
|---|
| 243 | #define FLDSTAR FUSER3
|
|---|
| 244 |
|
|---|
| 245 | /* Obj shorthands: */
|
|---|
| 246 | #define o_type any.co_type
|
|---|
| 247 | #define o_name any.co_name
|
|---|
| 248 | #define o_flags any.co_flags
|
|---|
| 249 | #define o_age any.co_age
|
|---|
| 250 | #define s_ra any.co_ra
|
|---|
| 251 | #define s_dec any.co_dec
|
|---|
| 252 | #define s_gaera any.co_gaera
|
|---|
| 253 | #define s_gaedec any.co_gaedec
|
|---|
| 254 | #define s_az any.co_az
|
|---|
| 255 | #define s_alt any.co_alt
|
|---|
| 256 | #define s_elong any.co_elong
|
|---|
| 257 | #define s_size any.co_size
|
|---|
| 258 | #define s_mag any.co_mag
|
|---|
| 259 |
|
|---|
| 260 | #define s_sdist anyss.so_sdist
|
|---|
| 261 | #define s_edist anyss.so_edist
|
|---|
| 262 | #define s_hlong anyss.so_hlong
|
|---|
| 263 | #define s_hlat anyss.so_hlat
|
|---|
| 264 | #define s_phase anyss.so_phase
|
|---|
| 265 |
|
|---|
| 266 | #define s_elev es.ess_elev
|
|---|
| 267 | #define s_range es.ess_range
|
|---|
| 268 | #define s_rangev es.ess_rangev
|
|---|
| 269 | #define s_sublat es.ess_sublat
|
|---|
| 270 | #define s_sublng es.ess_sublng
|
|---|
| 271 | #define s_eclipsed es.ess_eclipsed
|
|---|
| 272 |
|
|---|
| 273 | #define f_class f.fo_class
|
|---|
| 274 | #define f_spect f.fo_spect
|
|---|
| 275 | #define f_ratio f.fo_ratio
|
|---|
| 276 | #define f_pa f.fo_pa
|
|---|
| 277 | #define f_epoch f.fo_epoch
|
|---|
| 278 | #define f_RA f.fo_ra
|
|---|
| 279 | #define f_dec f.fo_dec
|
|---|
| 280 | #define f_mag f.fo_mag
|
|---|
| 281 | #define f_size f.fo_size
|
|---|
| 282 |
|
|---|
| 283 | #define e_cepoch e.eo_cepoch
|
|---|
| 284 | #define e_epoch e.eo_epoch
|
|---|
| 285 | #define e_inc e.eo_inc
|
|---|
| 286 | #define e_Om e.eo_Om
|
|---|
| 287 | #define e_om e.eo_om
|
|---|
| 288 | #define e_a e.eo_a
|
|---|
| 289 | #define e_e e.eo_e
|
|---|
| 290 | #define e_M e.eo_M
|
|---|
| 291 | #define e_size e.eo_size
|
|---|
| 292 | #define e_mag e.eo_mag
|
|---|
| 293 |
|
|---|
| 294 | #define h_epoch h.ho_epoch
|
|---|
| 295 | #define h_ep h.ho_ep
|
|---|
| 296 | #define h_inc h.ho_inc
|
|---|
| 297 | #define h_Om h.ho_Om
|
|---|
| 298 | #define h_om h.ho_om
|
|---|
| 299 | #define h_e h.ho_e
|
|---|
| 300 | #define h_qp h.ho_qp
|
|---|
| 301 | #define h_g h.ho_g
|
|---|
| 302 | #define h_k h.ho_k
|
|---|
| 303 | #define h_size h.ho_size
|
|---|
| 304 |
|
|---|
| 305 | #define p_epoch p.po_epoch
|
|---|
| 306 | #define p_ep p.po_ep
|
|---|
| 307 | #define p_inc p.po_inc
|
|---|
| 308 | #define p_qp p.po_qp
|
|---|
| 309 | #define p_om p.po_om
|
|---|
| 310 | #define p_Om p.po_Om
|
|---|
| 311 | #define p_g p.po_g
|
|---|
| 312 | #define p_k p.po_k
|
|---|
| 313 | #define p_size p.po_size
|
|---|
| 314 |
|
|---|
| 315 | #define es_epoch es.eso_epoch
|
|---|
| 316 | #define es_inc es.eso_inc
|
|---|
| 317 | #define es_raan es.eso_raan
|
|---|
| 318 | #define es_e es.eso_e
|
|---|
| 319 | #define es_ap es.eso_ap
|
|---|
| 320 | #define es_M es.eso_M
|
|---|
| 321 | #define es_n es.eso_n
|
|---|
| 322 | #define es_decay es.eso_decay
|
|---|
| 323 | #define es_drag es.eso_drag
|
|---|
| 324 | #define es_orbit es.eso_orbit
|
|---|
| 325 |
|
|---|
| 326 | /* insure we always refer to the fields and no monkey business */
|
|---|
| 327 | #undef OBJ_COMMON_FLDS
|
|---|
| 328 | #undef OBJ_SOLSYS_FLDS
|
|---|
| 329 |
|
|---|
| 330 | /* o_type code.
|
|---|
| 331 | * N.B. names are assigned in order in objmenu.c
|
|---|
| 332 | * N.B. if add one: update the size init in db_init(); switch in obj_cir().
|
|---|
| 333 | * N.B. UNDEFOBJ must be zero so new objects are undefinied by being zeroed.
|
|---|
| 334 | * N.B. maintain the bitmasks too.
|
|---|
| 335 | * N.B. PLANET must be last -- see objmenu.c
|
|---|
| 336 | */
|
|---|
| 337 | enum ObjType {
|
|---|
| 338 | UNDEFOBJ=0,
|
|---|
| 339 | FIXED, ELLIPTICAL, HYPERBOLIC, PARABOLIC, EARTHSAT, PLANET,
|
|---|
| 340 | NOBJTYPES
|
|---|
| 341 | };
|
|---|
| 342 |
|
|---|
| 343 | /* types as handy bitmasks too */
|
|---|
| 344 | #define FIXEDM (1<<FIXED)
|
|---|
| 345 | #define ELLIPTICALM (1<<ELLIPTICAL)
|
|---|
| 346 | #define HYPERBOLICM (1<<HYPERBOLIC)
|
|---|
| 347 | #define PARABOLICM (1<<PARABOLIC)
|
|---|
| 348 | #define EARTHSATM (1<<EARTHSAT)
|
|---|
| 349 | #define PLANETM (1<<PLANET)
|
|---|
| 350 | #define ALLM (FIXEDM | HYPERBOLICM | PARABOLICM | EARTHSATM \
|
|---|
| 351 | | ELLIPTICALM | PLANETM)
|
|---|
| 352 |
|
|---|
| 353 | /* define a code for each member in each object type struct.
|
|---|
| 354 | * making them globally unique avoids a nested switch in db_set_field() and
|
|---|
| 355 | * helps with dynamic prompting based on preferences.
|
|---|
| 356 | */
|
|---|
| 357 | enum {
|
|---|
| 358 | O_TYPE, O_NAME,
|
|---|
| 359 | F_RA, F_DEC, F_EPOCH, F_MAG, F_SIZE, F_CLASS, F_SPECT,
|
|---|
| 360 | E_INC, E_LAN, E_AOP, E_A, E_N, E_E, E_M, E_CEPOCH, E_EPOCH,E_M1,E_M2,E_SIZE,
|
|---|
| 361 | H_EP, H_INC, H_LAN, H_AOP, H_E, H_QP, H_EPOCH, H_G, H_K, H_SIZE,
|
|---|
| 362 | P_EP, P_INC, P_AOP, P_QP, P_LAN, P_EPOCH, P_G, P_K, P_SIZE,
|
|---|
| 363 | ES_EPOCH,ES_INC,ES_RAAN,ES_E,ES_AP,ES_M,ES_N,ES_DECAY,ES_ORBIT,ES_DRAG
|
|---|
| 364 | };
|
|---|
| 365 |
|
|---|
| 366 | /* rise, set and transit information.
|
|---|
| 367 | */
|
|---|
| 368 | typedef struct {
|
|---|
| 369 | int rs_flags; /* info about what has been computed and any
|
|---|
| 370 | * special conditions; see flags, below.
|
|---|
| 371 | */
|
|---|
| 372 | double rs_risetm; /* mjd time of rise today */
|
|---|
| 373 | double rs_riseaz; /* azimuth of rise, rads E of N */
|
|---|
| 374 | double rs_trantm; /* mjd time of transit today */
|
|---|
| 375 | double rs_tranalt; /* altitude of transit, rads up from horizon */
|
|---|
| 376 | double rs_settm; /* mjd time of set today */
|
|---|
| 377 | double rs_setaz; /* azimuth of set, rads E of N */
|
|---|
| 378 | } RiseSet;
|
|---|
| 379 |
|
|---|
| 380 | /* RiseSet flags */
|
|---|
| 381 | #define RS_NORISE 0x0001 /* object does not rise as such today */
|
|---|
| 382 | #define RS_NOSET 0x0002 /* object does not set as such today */
|
|---|
| 383 | #define RS_NOTRANS 0x0004 /* object does not transit as such today */
|
|---|
| 384 | #define RS_CIRCUMPOLAR 0x0010 /* object stays up all day today */
|
|---|
| 385 | #define RS_NEVERUP 0x0020 /* object never up at all today */
|
|---|
| 386 | #define RS_ERROR 0x1000 /* can't figure out anything! */
|
|---|
| 387 | #define RS_RISERR (0x0100|RS_ERROR) /* error computing rise */
|
|---|
| 388 | #define RS_SETERR (0x0200|RS_ERROR) /* error computing set */
|
|---|
| 389 | #define RS_TRANSERR (0x0400|RS_ERROR) /* error computing transit */
|
|---|
| 390 |
|
|---|
| 391 | #define is_type(op,m) ((1<<(op)->o_type) & (m))
|
|---|
| 392 | #define is_planet(op,p) (is_type(op,PLANETM) && ((ObjPl *)op)->pl_code==(p))
|
|---|
| 393 | #define is_ssobj(op) is_type(op,PLANETM|HYPERBOLICM|PARABOLICM|ELLIPTICALM)
|
|---|
| 394 |
|
|---|
| 395 | /* used to maintain progress state with db_scanint() and db_scan */
|
|---|
| 396 | typedef struct {
|
|---|
| 397 | int m; /* mask of *N types desired */
|
|---|
| 398 | int t; /* current Object type, as per ObjType */
|
|---|
| 399 | int n; /* number of objects "scanned" so far */
|
|---|
| 400 | ObjF *op; /* local list to also scan */
|
|---|
| 401 | int nop; /* number in op[] */
|
|---|
| 402 | } DBScan;
|
|---|
| 403 |
|
|---|
| 404 | #endif /* _CIRCUM_H */
|
|---|
| 405 |
|
|---|
| 406 | |
|---|
| 407 |
|
|---|
| 408 | /* Some handy declarations */
|
|---|
| 409 |
|
|---|
| 410 | /* ap_as.c */
|
|---|
| 411 | extern void ap_as P_(( Now *np, double Mjd, double *rap, double *decp));
|
|---|
| 412 | extern void as_ap P_(( Now *np, double Mjd, double *rap, double *decp));
|
|---|
| 413 |
|
|---|
| 414 | /* aux.c */
|
|---|
| 415 | extern double mm_mjed P_((Now *np));
|
|---|
| 416 |
|
|---|
| 417 | /* circum.c */
|
|---|
| 418 | extern int obj_cir P_((Now *np, Obj *op));
|
|---|
| 419 |
|
|---|
| 420 | /* earthsat.c */
|
|---|
| 421 | extern int obj_earthsat P_((Now *np, Obj *op));
|
|---|
| 422 |
|
|---|
| 423 | /* dbfmt.c */
|
|---|
| 424 | extern int db_crack_line P_((char s[], Obj *op, char whynot[]));
|
|---|
| 425 | extern void db_write_line P_((Obj *op, char *lp));
|
|---|
| 426 | extern int get_fields P_((char *s, int delim, char *fields[]));
|
|---|
| 427 | extern int db_chk_planet P_((char name[], Obj *op));
|
|---|
| 428 | extern int db_tle P_((char *name, char *l1, char *l2, Obj *op));
|
|---|
| 429 |
|
|---|
| 430 | /* misc.c */
|
|---|
| 431 | extern void now_lst P_((Now *np, double *lstp));
|
|---|
| 432 | extern void radec2ha P_((Now *np, double ra, double dec, double *hap));
|
|---|
| 433 | extern char *obj_description P_((Obj *op));
|
|---|
| 434 | extern int is_deepsky P_((Obj *op));
|
|---|
| 435 |
|
|---|
| 436 | /* riset_cir.c */
|
|---|
| 437 | extern void riset_cir P_((Now *np, Obj *op, double dis, RiseSet *rp));
|
|---|
| 438 | extern void twilight_cir P_((Now *np, double dis, double *dawn, double *dusk,
|
|---|
| 439 | int *status));
|
|---|
| 440 |
|
|---|
| 441 | /* For RCS Only -- Do Not Edit
|
|---|
| 442 | * @(#) $RCSfile: circum.h,v $ $Date: 2001-04-10 14:40:46 $ $Revision: 1.1.1.1 $ $Name: not supported by cvs2svn $
|
|---|
| 443 | */
|
|---|
![(please configure the [header_logo] section in trac.ini)](/PI/chrome/site/your_project_logo.png){kind=logo}
