104 |
|
|
105 |
|
double solar_sunset(int month, int day); |
106 |
|
double solar_sunrise(int month, int day); |
107 |
– |
double stadj(); |
108 |
– |
int jdate(int month, int day); |
107 |
|
|
108 |
|
const double AU = 149597890E3; |
109 |
|
const double solar_constant_e = 1367; /* solar constant W/m^2 */ |
120 |
|
|
121 |
|
|
122 |
|
/* required values */ |
123 |
+ |
int year = 0; /* year (optional) */ |
124 |
|
int month, day; /* date */ |
125 |
|
double hour; /* time */ |
126 |
|
int tsolar; /* 0=standard, 1=solar */ |
203 |
|
cloudy = 0; |
204 |
|
dosun = argv[i][0] == '+'; |
205 |
|
break; |
206 |
+ |
case 'y': |
207 |
+ |
year = atoi(argv[++i]); |
208 |
+ |
break; |
209 |
|
case 'R': |
210 |
|
u_solar = argv[i][1] == 'R' ? -1 : 1; |
211 |
|
solarbr = atof(argv[++i]); |
349 |
|
/* compute solar direction */ |
350 |
|
|
351 |
|
if (month) { /* from date and time */ |
350 |
– |
int jd; |
352 |
|
double sd; |
353 |
|
|
354 |
< |
jd = jdate(month, day); /* Julian date */ |
355 |
< |
sd = sdec(jd); /* solar declination */ |
356 |
< |
if (tsolar) /* solar time */ |
357 |
< |
st = hour; |
358 |
< |
else |
359 |
< |
st = hour + stadj(jd); |
360 |
< |
|
361 |
< |
|
354 |
> |
st = hour; |
355 |
> |
if (year) { /* Michalsky algorithm? */ |
356 |
> |
double mjd = mjdate(year, month, day, hour); |
357 |
> |
if (tsolar) |
358 |
> |
sd = msdec(mjd, NULL); |
359 |
> |
else |
360 |
> |
sd = msdec(mjd, &st); |
361 |
> |
} else { |
362 |
> |
int jd = jdate(month, day); /* Julian date */ |
363 |
> |
sd = sdec(jd); /* solar declination */ |
364 |
> |
if (!tsolar) /* get solar time? */ |
365 |
> |
st = hour + stadj(jd); |
366 |
> |
} |
367 |
> |
|
368 |
|
if(timeinterval) { |
369 |
|
|
370 |
|
if(timeinterval<0) { |
788 |
|
{ |
789 |
|
if (msg != NULL) |
790 |
|
fprintf(stderr, "%s: Use error - %s\n\n", progname, msg); |
791 |
< |
fprintf(stderr, "Usage: %s month day hour [...]\n", progname); |
792 |
< |
fprintf(stderr, " or: %s -ang altitude azimuth [...]\n", progname); |
791 |
> |
fprintf(stderr, "Usage: %s month day hour [-y year] [...]\n", progname); |
792 |
> |
fprintf(stderr, " or: %s -ang altitude azimuth [...]\n", progname); |
793 |
|
fprintf(stderr, " followed by: -P epsilon delta [options]\n"); |
794 |
|
fprintf(stderr, " or: [-W|-L|-G] direct_value diffuse_value [options]\n"); |
795 |
< |
fprintf(stderr, " or: -E global_irradiance [options]\n\n"); |
796 |
< |
fprintf(stderr, " Description:\n"); |
795 |
> |
fprintf(stderr, " or: -E global_irradiance [options]\n\n"); |
796 |
> |
fprintf(stderr, " Description:\n"); |
797 |
|
fprintf(stderr, " -P epsilon delta (these are the Perez parameters) \n"); |
798 |
|
fprintf(stderr, " -W direct-normal-irradiance diffuse-horizontal-irradiance (W/m^2)\n"); |
799 |
|
fprintf(stderr, " -L direct-normal-illuminance diffuse-horizontal-illuminance (lux)\n"); |
1427 |
|
/* degrees into radians */ |
1428 |
|
double radians(double degres) |
1429 |
|
{ |
1430 |
< |
return degres*M_PI/180.0; |
1430 |
> |
return degres*(M_PI/180.); |
1431 |
|
} |
1432 |
|
|
1433 |
|
|
1434 |
|
/* radian into degrees */ |
1435 |
|
double degres(double radians) |
1436 |
|
{ |
1437 |
< |
return radians/M_PI*180.0; |
1437 |
> |
return radians*(180./M_PI); |
1438 |
|
} |
1439 |
|
|
1440 |
|
|
1465 |
|
buffer += (*(lv+i))*cos(radians(*(theta+i))); |
1466 |
|
} |
1467 |
|
|
1468 |
< |
return buffer*2*M_PI/144; |
1468 |
> |
return buffer*(2.*M_PI/145.); |
1469 |
|
} |
1470 |
|
|
1471 |
|
|