86 |
|
#include <string.h> |
87 |
|
#include <ctype.h> |
88 |
|
#include "rtmath.h" |
89 |
+ |
#include "rtio.h" |
90 |
+ |
#include "resolu.h" |
91 |
+ |
#include "platform.h" |
92 |
|
#include "color.h" |
93 |
+ |
#include "resolu.h" |
94 |
|
|
95 |
|
char *progname; /* Program name */ |
96 |
|
char errmsg[128]; /* Error message buffer */ |
112 |
|
double solar_rad; /* Solar radiance */ |
113 |
|
double sun_zenith; /* Sun zenith angle (radians) */ |
114 |
|
int input = 0; /* Input type */ |
115 |
+ |
int output = 0; /* Output type */ |
116 |
|
|
117 |
|
extern double dmax( double, double ); |
118 |
|
extern double CalcAirMass(); |
213 |
|
{ 1.950, 2.800 }, |
214 |
|
{ 2.800, 4.500 }, |
215 |
|
{ 4.500, 6.200 }, |
216 |
< |
{ 6.200, 12.00 } /* Clear */ |
216 |
> |
{ 6.200, 12.01 } /* Clear */ |
217 |
|
}; |
218 |
|
|
219 |
|
/* Luminous efficacy model coefficients */ |
252 |
|
}; |
253 |
|
|
254 |
|
#ifndef NSUNPATCH |
255 |
< |
#define NSUNPATCH 4 /* # patches to spread sun into */ |
255 |
> |
#define NSUNPATCH 4 /* max. # patches to spread sun into */ |
256 |
|
#endif |
257 |
|
|
258 |
|
extern int jdate(int month, int day); |
265 |
|
extern double s_longitude; |
266 |
|
extern double s_meridian; |
267 |
|
|
268 |
< |
double grefl = 0.2; /* diffuse ground reflectance */ |
268 |
> |
int nsuns = NSUNPATCH; /* number of sun patches to use */ |
269 |
> |
double fixed_sun_sa = -1; /* fixed solid angle per sun? */ |
270 |
|
|
271 |
|
int verbose = 0; /* progress reports to stderr? */ |
272 |
|
|
274 |
|
|
275 |
|
int rhsubdiv = 1; /* Reinhart sky subdivisions */ |
276 |
|
|
277 |
< |
float skycolor[3] = {.96, 1.004, 1.118}; /* sky coloration */ |
277 |
> |
COLOR skycolor = {.96, 1.004, 1.118}; /* sky coloration */ |
278 |
> |
COLOR suncolor = {1., 1., 1.}; /* sun color */ |
279 |
> |
COLOR grefl = {.2, .2, .2}; /* ground reflectance */ |
280 |
|
|
273 |
– |
int do_sun = 1; /* output direct solar contribution? */ |
274 |
– |
|
281 |
|
int nskypatch; /* number of Reinhart patches */ |
282 |
|
float *rh_palt; /* sky patch altitudes (radians) */ |
283 |
|
float *rh_pazi; /* sky patch azimuths (radians) */ |
296 |
|
extern float * resize_dmatrix(float *mtx_data, int nsteps, int npatch); |
297 |
|
extern void AddDirect(float *parr); |
298 |
|
|
299 |
+ |
|
300 |
+ |
static const char * |
301 |
+ |
getfmtname(int fmt) |
302 |
+ |
{ |
303 |
+ |
switch (fmt) { |
304 |
+ |
case 'a': |
305 |
+ |
return("ascii"); |
306 |
+ |
case 'f': |
307 |
+ |
return("float"); |
308 |
+ |
case 'd': |
309 |
+ |
return("double"); |
310 |
+ |
} |
311 |
+ |
return("unknown"); |
312 |
+ |
} |
313 |
+ |
|
314 |
+ |
|
315 |
|
int |
316 |
|
main(int argc, char *argv[]) |
317 |
|
{ |
318 |
|
char buf[256]; |
319 |
+ |
int doheader = 1; /* output header? */ |
320 |
+ |
double rotation = 0; /* site rotation (degrees) */ |
321 |
|
double elevation; /* site elevation (meters) */ |
322 |
|
int dir_is_horiz; /* direct is meas. on horizontal? */ |
323 |
|
float *mtx_data = NULL; /* our matrix data */ |
324 |
< |
int ntsteps = 0; /* number of rows in matrix */ |
324 |
> |
int avgSky = 0; /* compute average sky r.t. matrix? */ |
325 |
> |
int ntsteps = 0; /* number of time steps */ |
326 |
> |
int tstorage = 0; /* number of allocated time steps */ |
327 |
> |
int nstored = 0; /* number of time steps in matrix */ |
328 |
|
int last_monthly = 0; /* month of last report */ |
329 |
+ |
int inconsistent = 0; /* inconsistent options set? */ |
330 |
|
int mo, da; /* month (1-12) and day (1-31) */ |
331 |
|
double hr; /* hour (local standard time) */ |
332 |
|
double dir, dif; /* direct and diffuse values */ |
337 |
|
/* get options */ |
338 |
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
339 |
|
switch (argv[i][1]) { |
340 |
< |
case 'g': |
341 |
< |
grefl = atof(argv[++i]); |
340 |
> |
case 'g': /* ground reflectance */ |
341 |
> |
grefl[0] = atof(argv[++i]); |
342 |
> |
grefl[1] = atof(argv[++i]); |
343 |
> |
grefl[2] = atof(argv[++i]); |
344 |
|
break; |
345 |
< |
case 'v': |
345 |
> |
case 'v': /* verbose progress reports */ |
346 |
|
verbose++; |
347 |
|
break; |
348 |
< |
case 'o': |
348 |
> |
case 'h': /* turn off header */ |
349 |
> |
doheader = 0; |
350 |
> |
break; |
351 |
> |
case 'o': /* output format */ |
352 |
|
switch (argv[i][2]) { |
353 |
|
case 'f': |
354 |
|
case 'd': |
359 |
|
goto userr; |
360 |
|
} |
361 |
|
break; |
362 |
< |
case 'm': |
362 |
> |
case 'O': /* output type */ |
363 |
> |
switch (argv[i][2]) { |
364 |
> |
case '0': |
365 |
> |
output = 0; |
366 |
> |
break; |
367 |
> |
case '1': |
368 |
> |
output = 1; |
369 |
> |
break; |
370 |
> |
default: |
371 |
> |
goto userr; |
372 |
> |
} |
373 |
> |
if (argv[i][3]) |
374 |
> |
goto userr; |
375 |
> |
break; |
376 |
> |
case 'm': /* Reinhart subdivisions */ |
377 |
|
rhsubdiv = atoi(argv[++i]); |
378 |
|
break; |
379 |
< |
case 'c': |
379 |
> |
case 'c': /* sky color */ |
380 |
> |
inconsistent |= (skycolor[1] <= 1e-4); |
381 |
|
skycolor[0] = atof(argv[++i]); |
382 |
|
skycolor[1] = atof(argv[++i]); |
383 |
|
skycolor[2] = atof(argv[++i]); |
384 |
|
break; |
385 |
< |
case 'd': |
338 |
< |
do_sun = 1; |
385 |
> |
case 'd': /* solar (direct) only */ |
386 |
|
skycolor[0] = skycolor[1] = skycolor[2] = 0; |
387 |
+ |
if (suncolor[1] <= 1e-4) { |
388 |
+ |
inconsistent = 1; |
389 |
+ |
suncolor[0] = suncolor[1] = suncolor[2] = 1; |
390 |
+ |
} |
391 |
|
break; |
392 |
< |
case 's': |
393 |
< |
do_sun = 0; |
394 |
< |
if (skycolor[1] <= 1e-4) |
392 |
> |
case 's': /* sky only (no direct) */ |
393 |
> |
suncolor[0] = suncolor[1] = suncolor[2] = 0; |
394 |
> |
if (skycolor[1] <= 1e-4) { |
395 |
> |
inconsistent = 1; |
396 |
|
skycolor[0] = skycolor[1] = skycolor[2] = 1; |
397 |
+ |
} |
398 |
|
break; |
399 |
+ |
case 'r': /* rotate distribution */ |
400 |
+ |
if (argv[i][2] && argv[i][2] != 'z') |
401 |
+ |
goto userr; |
402 |
+ |
rotation = atof(argv[++i]); |
403 |
+ |
break; |
404 |
+ |
case '5': /* 5-phase calculation */ |
405 |
+ |
nsuns = 1; |
406 |
+ |
fixed_sun_sa = PI/360.*atof(argv[++i]); |
407 |
+ |
if (fixed_sun_sa <= 0) { |
408 |
+ |
fprintf(stderr, "%s: missing solar disk size argument for '-5' option\n", |
409 |
+ |
argv[0]); |
410 |
+ |
exit(1); |
411 |
+ |
} |
412 |
+ |
fixed_sun_sa *= fixed_sun_sa*PI; |
413 |
+ |
break; |
414 |
+ |
case 'A': /* compute average sky */ |
415 |
+ |
avgSky = 1; |
416 |
+ |
break; |
417 |
|
default: |
418 |
|
goto userr; |
419 |
|
} |
420 |
|
if (i < argc-1) |
421 |
|
goto userr; |
422 |
+ |
if (inconsistent) |
423 |
+ |
fprintf(stderr, "%s: WARNING: inconsistent -s, -d, -c options!\n", |
424 |
+ |
progname); |
425 |
|
if (i == argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
426 |
|
fprintf(stderr, "%s: cannot open '%s' for input\n", |
427 |
|
progname, argv[i]); |
471 |
|
progname, s_latitude, s_longitude); |
472 |
|
fprintf(stderr, "%s: %d sky patches per time step\n", |
473 |
|
progname, nskypatch); |
474 |
+ |
if (rotation != 0) |
475 |
+ |
fprintf(stderr, "%s: rotating output %.0f degrees\n", |
476 |
+ |
progname, rotation); |
477 |
|
} |
478 |
|
/* convert quantities to radians */ |
479 |
|
s_latitude = DegToRad(s_latitude); |
480 |
|
s_longitude = DegToRad(s_longitude); |
481 |
|
s_meridian = DegToRad(s_meridian); |
482 |
+ |
/* initial allocation */ |
483 |
+ |
mtx_data = resize_dmatrix(mtx_data, tstorage=2, nskypatch); |
484 |
|
/* process each time step in tape */ |
485 |
|
while (scanf("%d %d %lf %lf %lf\n", &mo, &da, &hr, &dir, &dif) == 5) { |
486 |
|
double sda, sta; |
487 |
< |
/* make space for next time step */ |
488 |
< |
mtx_offset = 3*nskypatch*ntsteps++; |
489 |
< |
mtx_data = resize_dmatrix(mtx_data, ntsteps, nskypatch); |
487 |
> |
|
488 |
> |
mtx_offset = 3*nskypatch*nstored; |
489 |
> |
nstored += !avgSky | !nstored; |
490 |
> |
/* make space for next row */ |
491 |
> |
if (nstored > tstorage) { |
492 |
> |
tstorage += (tstorage>>1) + nstored + 7; |
493 |
> |
mtx_data = resize_dmatrix(mtx_data, tstorage, nskypatch); |
494 |
> |
} |
495 |
> |
ntsteps++; /* keep count of time steps */ |
496 |
|
if (dif <= 1e-4) { |
497 |
< |
memset(mtx_data+mtx_offset, 0, sizeof(float)*3*nskypatch); |
497 |
> |
if (!avgSky | !mtx_offset) |
498 |
> |
memset(mtx_data+mtx_offset, 0, sizeof(float)*3*nskypatch); |
499 |
|
continue; |
500 |
|
} |
501 |
|
if (verbose && mo != last_monthly) |
506 |
|
sda = sdec(julian_date); |
507 |
|
sta = stadj(julian_date); |
508 |
|
altitude = salt(sda, hr+sta); |
509 |
< |
azimuth = sazi(sda, hr+sta) + PI; |
509 |
> |
azimuth = sazi(sda, hr+sta) + PI - DegToRad(rotation); |
510 |
|
/* convert measured values */ |
511 |
|
if (dir_is_horiz && altitude > 0.) |
512 |
|
dir /= sin(altitude); |
519 |
|
} |
520 |
|
/* compute sky patch values */ |
521 |
|
ComputeSky(mtx_data+mtx_offset); |
522 |
< |
if (do_sun) |
523 |
< |
AddDirect(mtx_data+mtx_offset); |
522 |
> |
AddDirect(mtx_data+mtx_offset); |
523 |
> |
/* update cumulative sky? */ |
524 |
> |
for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) |
525 |
> |
mtx_data[i] += mtx_data[mtx_offset+i]; |
526 |
|
} |
527 |
|
/* check for junk at end */ |
528 |
|
while ((i = fgetc(stdin)) != EOF) |
534 |
|
fputs(buf, stderr); fputc('\n', stderr); |
535 |
|
break; |
536 |
|
} |
537 |
+ |
if (!ntsteps) { |
538 |
+ |
fprintf(stderr, "%s: no valid time steps on input\n", progname); |
539 |
+ |
exit(1); |
540 |
+ |
} |
541 |
+ |
dif = 1./(double)ntsteps; /* average sky? */ |
542 |
+ |
for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) |
543 |
+ |
mtx_data[i] *= dif; |
544 |
|
/* write out matrix */ |
545 |
+ |
if (outfmt != 'a') |
546 |
+ |
SET_FILE_BINARY(stdout); |
547 |
|
#ifdef getc_unlocked |
548 |
|
flockfile(stdout); |
549 |
|
#endif |
550 |
|
if (verbose) |
551 |
|
fprintf(stderr, "%s: writing %smatrix with %d time steps...\n", |
552 |
< |
progname, outfmt=='a' ? "" : "binary ", ntsteps); |
552 |
> |
progname, outfmt=='a' ? "" : "binary ", nstored); |
553 |
> |
if (doheader) { |
554 |
> |
newheader("RADIANCE", stdout); |
555 |
> |
printargs(argc, argv, stdout); |
556 |
> |
printf("LATLONG= %.8f %.8f\n", RadToDeg(s_latitude), |
557 |
> |
-RadToDeg(s_longitude)); |
558 |
> |
printf("NROWS=%d\n", nskypatch); |
559 |
> |
printf("NCOLS=%d\n", nstored); |
560 |
> |
printf("NCOMP=3\n"); |
561 |
> |
if ((outfmt == 'f') | (outfmt == 'd')) |
562 |
> |
fputendian(stdout); |
563 |
> |
fputformat((char *)getfmtname(outfmt), stdout); |
564 |
> |
putchar('\n'); |
565 |
> |
} |
566 |
|
/* patches are rows (outer sort) */ |
567 |
|
for (i = 0; i < nskypatch; i++) { |
568 |
|
mtx_offset = 3*i; |
569 |
|
switch (outfmt) { |
570 |
|
case 'a': |
571 |
< |
for (j = 0; j < ntsteps; j++) { |
571 |
> |
for (j = 0; j < nstored; j++) { |
572 |
|
printf("%.3g %.3g %.3g\n", mtx_data[mtx_offset], |
573 |
|
mtx_data[mtx_offset+1], |
574 |
|
mtx_data[mtx_offset+2]); |
575 |
|
mtx_offset += 3*nskypatch; |
576 |
|
} |
577 |
< |
if (ntsteps > 1) |
577 |
> |
if (nstored > 1) |
578 |
|
fputc('\n', stdout); |
579 |
|
break; |
580 |
|
case 'f': |
581 |
< |
for (j = 0; j < ntsteps; j++) { |
582 |
< |
fwrite(mtx_data+mtx_offset, sizeof(float), 3, |
581 |
> |
for (j = 0; j < nstored; j++) { |
582 |
> |
putbinary(mtx_data+mtx_offset, sizeof(float), 3, |
583 |
|
stdout); |
584 |
|
mtx_offset += 3*nskypatch; |
585 |
|
} |
586 |
|
break; |
587 |
|
case 'd': |
588 |
< |
for (j = 0; j < ntsteps; j++) { |
588 |
> |
for (j = 0; j < nstored; j++) { |
589 |
|
double ment[3]; |
590 |
|
ment[0] = mtx_data[mtx_offset]; |
591 |
|
ment[1] = mtx_data[mtx_offset+1]; |
592 |
|
ment[2] = mtx_data[mtx_offset+2]; |
593 |
< |
fwrite(ment, sizeof(double), 3, stdout); |
593 |
> |
putbinary(ment, sizeof(double), 3, stdout); |
594 |
|
mtx_offset += 3*nskypatch; |
595 |
|
} |
596 |
|
break; |
604 |
|
fprintf(stderr, "%s: done.\n", progname); |
605 |
|
exit(0); |
606 |
|
userr: |
607 |
< |
fprintf(stderr, "Usage: %s [-v][-d|-s][-m N][-g refl][-c r g b][-o{f|d}] [tape.wea]\n", |
607 |
> |
fprintf(stderr, "Usage: %s [-v][-h][-A][-d|-s][-r deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n", |
608 |
|
progname); |
609 |
|
exit(1); |
610 |
|
fmterr: |
625 |
|
{ |
626 |
|
int index; /* Category index */ |
627 |
|
double norm_diff_illum; /* Normalized diffuse illuimnance */ |
518 |
– |
double zlumin; /* Zenith luminance */ |
628 |
|
int i; |
629 |
|
|
630 |
|
/* Calculate atmospheric precipitable water content */ |
631 |
|
apwc = CalcPrecipWater(dew_point); |
632 |
|
|
633 |
< |
/* Limit solar altitude to keep circumsolar off zenith */ |
634 |
< |
if (altitude > DegToRad(87.0)) |
635 |
< |
altitude = DegToRad(87.0); |
633 |
> |
/* Calculate sun zenith angle (don't let it dip below horizon) */ |
634 |
> |
/* Also limit minimum angle to keep circumsolar off zenith */ |
635 |
> |
if (altitude <= 0.0) |
636 |
> |
sun_zenith = DegToRad(90.0); |
637 |
> |
else if (altitude >= DegToRad(87.0)) |
638 |
> |
sun_zenith = DegToRad(3.0); |
639 |
> |
else |
640 |
> |
sun_zenith = DegToRad(90.0) - altitude; |
641 |
|
|
528 |
– |
/* Calculate sun zenith angle */ |
529 |
– |
sun_zenith = DegToRad(90.0) - altitude; |
530 |
– |
|
642 |
|
/* Compute the inputs for the calculation of the sky distribution */ |
643 |
|
|
644 |
|
if (input == 0) /* XXX never used */ |
657 |
|
sky_brightness = CalcSkyBrightness(); |
658 |
|
sky_clearness = CalcSkyClearness(); |
659 |
|
|
660 |
+ |
/* Limit sky clearness */ |
661 |
+ |
if (sky_clearness > 11.9) |
662 |
+ |
sky_clearness = 11.9; |
663 |
+ |
|
664 |
+ |
/* Limit sky brightness */ |
665 |
+ |
if (sky_brightness < 0.01) |
666 |
+ |
sky_brightness = 0.01; |
667 |
+ |
|
668 |
|
/* Calculate illuminance */ |
669 |
|
index = GetCategoryIndex(); |
670 |
|
diff_illum = diff_irrad * CalcDiffuseIllumRatio(index); |
676 |
|
index = CalcSkyParamFromIllum(); |
677 |
|
} |
678 |
|
|
679 |
+ |
if (output == 1) { /* hack for solar radiance */ |
680 |
+ |
diff_illum = diff_irrad * WHTEFFICACY; |
681 |
+ |
dir_illum = dir_irrad * WHTEFFICACY; |
682 |
+ |
} |
683 |
+ |
|
684 |
|
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
685 |
|
memset(parr, 0, sizeof(float)*3*nskypatch); |
686 |
|
return; |
689 |
|
parr[0] = diff_illum; |
690 |
|
if (altitude > 0) |
691 |
|
parr[0] += dir_illum * sin(altitude); |
692 |
< |
parr[2] = parr[1] = parr[0] *= grefl*(1./PI/WHTEFFICACY); |
692 |
> |
parr[2] = parr[1] = parr[0] *= (1./PI/WHTEFFICACY); |
693 |
> |
multcolor(parr, grefl); |
694 |
|
|
695 |
|
/* Calculate Perez sky model parameters */ |
696 |
|
CalcPerezParam(sun_zenith, sky_clearness, sky_brightness, index); |
701 |
|
/* Calculate relative horizontal illuminance */ |
702 |
|
norm_diff_illum = CalcRelHorzIllum(parr); |
703 |
|
|
704 |
+ |
/* Check for zero sky -- make uniform in that case */ |
705 |
+ |
if (norm_diff_illum <= FTINY) { |
706 |
+ |
for (i = 1; i < nskypatch; i++) |
707 |
+ |
setcolor(parr+3*i, 1., 1., 1.); |
708 |
+ |
norm_diff_illum = PI; |
709 |
+ |
} |
710 |
|
/* Normalization coefficient */ |
711 |
|
norm_diff_illum = diff_illum / norm_diff_illum; |
712 |
|
|
582 |
– |
/* Calculate relative zenith luminance */ |
583 |
– |
zlumin = CalcRelLuminance(sun_zenith, 0.0); |
584 |
– |
|
585 |
– |
/* Calculate absolute zenith illuminance */ |
586 |
– |
zlumin *= norm_diff_illum; |
587 |
– |
|
713 |
|
/* Apply to sky patches to get absolute radiance values */ |
714 |
|
for (i = 1; i < nskypatch; i++) { |
715 |
< |
scalecolor(parr+3*i, zlumin*(1./WHTEFFICACY)); |
715 |
> |
scalecolor(parr+3*i, norm_diff_illum*(1./WHTEFFICACY)); |
716 |
|
multcolor(parr+3*i, skycolor); |
717 |
|
} |
718 |
|
} |
727 |
|
double wta[NSUNPATCH], wtot; |
728 |
|
int i, j, p; |
729 |
|
|
730 |
< |
if (!do_sun || dir_illum < 1e-4) |
730 |
> |
if (dir_illum <= 1e-4 || bright(suncolor) <= 1e-4) |
731 |
|
return; |
732 |
< |
/* identify NSUNPATCH closest patches */ |
733 |
< |
for (i = NSUNPATCH; i--; ) |
732 |
> |
/* identify nsuns closest patches */ |
733 |
> |
if (nsuns > NSUNPATCH) |
734 |
> |
nsuns = NSUNPATCH; |
735 |
> |
else if (nsuns <= 0) |
736 |
> |
nsuns = 1; |
737 |
> |
for (i = nsuns; i--; ) |
738 |
|
near_dprod[i] = -1.; |
739 |
|
vector(svec, altitude, azimuth); |
740 |
|
for (p = 1; p < nskypatch; p++) { |
742 |
|
double dprod; |
743 |
|
rh_vector(pvec, p); |
744 |
|
dprod = DOT(pvec, svec); |
745 |
< |
for (i = 0; i < NSUNPATCH; i++) |
745 |
> |
for (i = 0; i < nsuns; i++) |
746 |
|
if (dprod > near_dprod[i]) { |
747 |
< |
for (j = NSUNPATCH; --j > i; ) { |
747 |
> |
for (j = nsuns; --j > i; ) { |
748 |
|
near_dprod[j] = near_dprod[j-1]; |
749 |
|
near_patch[j] = near_patch[j-1]; |
750 |
|
} |
754 |
|
} |
755 |
|
} |
756 |
|
wtot = 0; /* weight by proximity */ |
757 |
< |
for (i = NSUNPATCH; i--; ) |
757 |
> |
for (i = nsuns; i--; ) |
758 |
|
wtot += wta[i] = 1./(1.002 - near_dprod[i]); |
759 |
|
/* add to nearest patch radiances */ |
760 |
< |
for (i = NSUNPATCH; i--; ) { |
760 |
> |
for (i = nsuns; i--; ) { |
761 |
|
float *pdest = parr + 3*near_patch[i]; |
762 |
< |
float val_add = wta[i] * dir_illum / |
763 |
< |
(WHTEFFICACY * wtot * rh_dom[near_patch[i]]); |
764 |
< |
*pdest++ += val_add; |
765 |
< |
*pdest++ += val_add; |
766 |
< |
*pdest++ += val_add; |
762 |
> |
float val_add = wta[i] * dir_illum / (WHTEFFICACY * wtot); |
763 |
> |
|
764 |
> |
val_add /= (fixed_sun_sa > 0) ? fixed_sun_sa |
765 |
> |
: rh_dom[near_patch[i]] ; |
766 |
> |
*pdest++ += val_add*suncolor[0]; |
767 |
> |
*pdest++ += val_add*suncolor[1]; |
768 |
> |
*pdest++ += val_add*suncolor[2]; |
769 |
|
} |
770 |
|
} |
771 |
|
|
906 |
|
double sz_cubed; /* Sun zenith angle cubed */ |
907 |
|
|
908 |
|
/* Calculate sun zenith angle cubed */ |
909 |
< |
sz_cubed = pow(sun_zenith, 3.0); |
909 |
> |
sz_cubed = sun_zenith*sun_zenith*sun_zenith; |
910 |
|
|
911 |
|
return ((diff_irrad + dir_irrad) / diff_irrad + 1.041 * |
912 |
|
sz_cubed) / (1.0 + 1.041 * sz_cubed); |
937 |
|
double CalcDirectIrradiance() |
938 |
|
{ |
939 |
|
return CalcDiffuseIrradiance() * ((sky_clearness - 1.0) * (1 + 1.041 |
940 |
< |
* pow(sun_zenith, 3.0))); |
940 |
> |
* sun_zenith*sun_zenith*sun_zenith)); |
941 |
|
} |
942 |
|
|
943 |
|
/* Calculate sky brightness and clearness from illuminance values */ |
963 |
|
sky_clearness = 12.0; |
964 |
|
|
965 |
|
/* Limit sky brightness */ |
966 |
< |
if (sky_brightness < 0.05) |
966 |
> |
if (sky_brightness < 0.01) |
967 |
|
sky_brightness = 0.01; |
968 |
|
|
969 |
|
while (((fabs(diff_irrad - test1) > 10.0) || |
976 |
|
/* Convert illuminance to irradiance */ |
977 |
|
index = GetCategoryIndex(); |
978 |
|
diff_irrad = diff_illum / CalcDiffuseIllumRatio(index); |
979 |
< |
dir_irrad = dir_illum / CalcDirectIllumRatio(index); |
979 |
> |
dir_irrad = CalcDirectIllumRatio(index); |
980 |
> |
if (dir_irrad > 0.1) |
981 |
> |
dir_irrad = dir_illum / dir_irrad; |
982 |
|
|
983 |
|
/* Calculate sky brightness and clearness */ |
984 |
|
sky_brightness = CalcSkyBrightness(); |
989 |
|
sky_clearness = 12.0; |
990 |
|
|
991 |
|
/* Limit sky brightness */ |
992 |
< |
if (sky_brightness < 0.05) |
992 |
> |
if (sky_brightness < 0.01) |
993 |
|
sky_brightness = 0.01; |
994 |
|
} |
995 |
|
|
1075 |
|
double rh_illum = 0.0; /* Relative horizontal illuminance */ |
1076 |
|
|
1077 |
|
for (i = 1; i < nskypatch; i++) |
1078 |
< |
rh_illum += parr[3*i+1] * rh_cos(i); |
1078 |
> |
rh_illum += parr[3*i+1] * rh_cos(i) * rh_dom[i]; |
1079 |
|
|
1080 |
< |
return rh_illum * (2.0 * PI / (nskypatch-1)); |
1080 |
> |
return rh_illum; |
1081 |
|
} |
1082 |
|
|
1083 |
|
/* Calculate earth orbit eccentricity correction factor */ |