| 292 |
|
main(int argc, char *argv[]) |
| 293 |
|
{ |
| 294 |
|
char buf[256]; |
| 295 |
+ |
double rotation = 0; /* site rotation (degrees) */ |
| 296 |
|
double elevation; /* site elevation (meters) */ |
| 297 |
|
int dir_is_horiz; /* direct is meas. on horizontal? */ |
| 298 |
|
float *mtx_data = NULL; /* our matrix data */ |
| 345 |
|
if (skycolor[1] <= 1e-4) |
| 346 |
|
skycolor[0] = skycolor[1] = skycolor[2] = 1; |
| 347 |
|
break; |
| 348 |
+ |
case 'r': /* rotate distribution */ |
| 349 |
+ |
if (argv[i][2] && argv[i][2] != 'z') |
| 350 |
+ |
goto userr; |
| 351 |
+ |
rotation = atof(argv[++i]); |
| 352 |
+ |
break; |
| 353 |
|
default: |
| 354 |
|
goto userr; |
| 355 |
|
} |
| 404 |
|
progname, s_latitude, s_longitude); |
| 405 |
|
fprintf(stderr, "%s: %d sky patches per time step\n", |
| 406 |
|
progname, nskypatch); |
| 407 |
+ |
if (rotation != 0) |
| 408 |
+ |
fprintf(stderr, "%s: rotating output %.0f degrees\n", |
| 409 |
+ |
progname, rotation); |
| 410 |
|
} |
| 411 |
|
/* convert quantities to radians */ |
| 412 |
|
s_latitude = DegToRad(s_latitude); |
| 430 |
|
sda = sdec(julian_date); |
| 431 |
|
sta = stadj(julian_date); |
| 432 |
|
altitude = salt(sda, hr+sta); |
| 433 |
< |
azimuth = sazi(sda, hr+sta) + PI; |
| 433 |
> |
azimuth = sazi(sda, hr+sta) + PI - DegToRad(rotation); |
| 434 |
|
/* convert measured values */ |
| 435 |
|
if (dir_is_horiz && altitude > 0.) |
| 436 |
|
dir /= sin(altitude); |
| 503 |
|
fprintf(stderr, "%s: done.\n", progname); |
| 504 |
|
exit(0); |
| 505 |
|
userr: |
| 506 |
< |
fprintf(stderr, "Usage: %s [-v][-d|-s][-m N][-g r g b][-c r g b][-o{f|d}] [tape.wea]\n", |
| 506 |
> |
fprintf(stderr, "Usage: %s [-v][-d|-s][-r deg][-m N][-g r g b][-c r g b][-o{f|d}] [tape.wea]\n", |
| 507 |
|
progname); |
| 508 |
|
exit(1); |
| 509 |
|
fmterr: |
