108 |
|
double solar_rad; /* Solar radiance */ |
109 |
|
double sun_zenith; /* Sun zenith angle (radians) */ |
110 |
|
int input = 0; /* Input type */ |
111 |
+ |
int output = 0; /* Output type */ |
112 |
|
|
113 |
|
extern double dmax( double, double ); |
114 |
|
extern double CalcAirMass(); |
248 |
|
}; |
249 |
|
|
250 |
|
#ifndef NSUNPATCH |
251 |
< |
#define NSUNPATCH 4 /* # patches to spread sun into */ |
251 |
> |
#define NSUNPATCH 4 /* max. # patches to spread sun into */ |
252 |
|
#endif |
253 |
|
|
254 |
|
extern int jdate(int month, int day); |
261 |
|
extern double s_longitude; |
262 |
|
extern double s_meridian; |
263 |
|
|
264 |
+ |
int nsuns = NSUNPATCH; /* number of sun patches to use */ |
265 |
+ |
double fixed_sun_sa = -1; /* fixed solid angle per sun? */ |
266 |
+ |
|
267 |
|
int verbose = 0; /* progress reports to stderr? */ |
268 |
|
|
269 |
|
int outfmt = 'a'; /* output format */ |
331 |
|
goto userr; |
332 |
|
} |
333 |
|
break; |
334 |
+ |
case 'O': /* output type */ |
335 |
+ |
switch (argv[i][2]) { |
336 |
+ |
case '0': |
337 |
+ |
output = 0; |
338 |
+ |
break; |
339 |
+ |
case '1': |
340 |
+ |
output = 1; |
341 |
+ |
break; |
342 |
+ |
default: |
343 |
+ |
goto userr; |
344 |
+ |
} |
345 |
+ |
if (argv[i][3]) |
346 |
+ |
goto userr; |
347 |
+ |
break; |
348 |
|
case 'm': /* Reinhart subdivisions */ |
349 |
|
rhsubdiv = atoi(argv[++i]); |
350 |
|
break; |
368 |
|
goto userr; |
369 |
|
rotation = atof(argv[++i]); |
370 |
|
break; |
371 |
+ |
case '5': /* 5-phase calculation */ |
372 |
+ |
nsuns = 1; |
373 |
+ |
fixed_sun_sa = 6.797e-05; |
374 |
+ |
break; |
375 |
|
default: |
376 |
|
goto userr; |
377 |
|
} |
525 |
|
fprintf(stderr, "%s: done.\n", progname); |
526 |
|
exit(0); |
527 |
|
userr: |
528 |
< |
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", |
528 |
> |
fprintf(stderr, "Usage: %s [-v][-d|-s][-r deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n", |
529 |
|
progname); |
530 |
|
exit(1); |
531 |
|
fmterr: |
578 |
|
sky_brightness = CalcSkyBrightness(); |
579 |
|
sky_clearness = CalcSkyClearness(); |
580 |
|
|
581 |
+ |
/* Limit sky clearness */ |
582 |
+ |
if (sky_clearness > 11.9) |
583 |
+ |
sky_clearness = 11.9; |
584 |
+ |
|
585 |
+ |
/* Limit sky brightness */ |
586 |
+ |
if (sky_brightness < 0.01) |
587 |
+ |
sky_brightness = 0.01; |
588 |
+ |
|
589 |
|
/* Calculate illuminance */ |
590 |
|
index = GetCategoryIndex(); |
591 |
|
diff_illum = diff_irrad * CalcDiffuseIllumRatio(index); |
597 |
|
index = CalcSkyParamFromIllum(); |
598 |
|
} |
599 |
|
|
600 |
+ |
if (output == 1) { /* hack for solar radiance */ |
601 |
+ |
diff_illum = diff_irrad * WHTEFFICACY; |
602 |
+ |
dir_illum = dir_irrad * WHTEFFICACY; |
603 |
+ |
} |
604 |
+ |
|
605 |
|
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
606 |
|
memset(parr, 0, sizeof(float)*3*nskypatch); |
607 |
|
return; |
644 |
|
|
645 |
|
if (dir_illum <= 1e-4 || bright(suncolor) <= 1e-4) |
646 |
|
return; |
647 |
< |
/* identify NSUNPATCH closest patches */ |
648 |
< |
for (i = NSUNPATCH; i--; ) |
647 |
> |
/* identify nsuns closest patches */ |
648 |
> |
if (nsuns > NSUNPATCH) |
649 |
> |
nsuns = NSUNPATCH; |
650 |
> |
else if (nsuns <= 0) |
651 |
> |
nsuns = 1; |
652 |
> |
for (i = nsuns; i--; ) |
653 |
|
near_dprod[i] = -1.; |
654 |
|
vector(svec, altitude, azimuth); |
655 |
|
for (p = 1; p < nskypatch; p++) { |
657 |
|
double dprod; |
658 |
|
rh_vector(pvec, p); |
659 |
|
dprod = DOT(pvec, svec); |
660 |
< |
for (i = 0; i < NSUNPATCH; i++) |
660 |
> |
for (i = 0; i < nsuns; i++) |
661 |
|
if (dprod > near_dprod[i]) { |
662 |
< |
for (j = NSUNPATCH; --j > i; ) { |
662 |
> |
for (j = nsuns; --j > i; ) { |
663 |
|
near_dprod[j] = near_dprod[j-1]; |
664 |
|
near_patch[j] = near_patch[j-1]; |
665 |
|
} |
669 |
|
} |
670 |
|
} |
671 |
|
wtot = 0; /* weight by proximity */ |
672 |
< |
for (i = NSUNPATCH; i--; ) |
672 |
> |
for (i = nsuns; i--; ) |
673 |
|
wtot += wta[i] = 1./(1.002 - near_dprod[i]); |
674 |
|
/* add to nearest patch radiances */ |
675 |
< |
for (i = NSUNPATCH; i--; ) { |
675 |
> |
for (i = nsuns; i--; ) { |
676 |
|
float *pdest = parr + 3*near_patch[i]; |
677 |
< |
float val_add = wta[i] * dir_illum / |
678 |
< |
(WHTEFFICACY * wtot * rh_dom[near_patch[i]]); |
677 |
> |
float val_add = wta[i] * dir_illum / (WHTEFFICACY * wtot); |
678 |
> |
|
679 |
> |
val_add /= (fixed_sun_sa > 0) ? fixed_sun_sa |
680 |
> |
: rh_dom[near_patch[i]] ; |
681 |
|
*pdest++ += val_add*suncolor[0]; |
682 |
|
*pdest++ += val_add*suncolor[1]; |
683 |
|
*pdest++ += val_add*suncolor[2]; |
821 |
|
double sz_cubed; /* Sun zenith angle cubed */ |
822 |
|
|
823 |
|
/* Calculate sun zenith angle cubed */ |
824 |
< |
sz_cubed = pow(sun_zenith, 3.0); |
824 |
> |
sz_cubed = sun_zenith*sun_zenith*sun_zenith; |
825 |
|
|
826 |
|
return ((diff_irrad + dir_irrad) / diff_irrad + 1.041 * |
827 |
|
sz_cubed) / (1.0 + 1.041 * sz_cubed); |
852 |
|
double CalcDirectIrradiance() |
853 |
|
{ |
854 |
|
return CalcDiffuseIrradiance() * ((sky_clearness - 1.0) * (1 + 1.041 |
855 |
< |
* pow(sun_zenith, 3.0))); |
855 |
> |
* sun_zenith*sun_zenith*sun_zenith)); |
856 |
|
} |
857 |
|
|
858 |
|
/* Calculate sky brightness and clearness from illuminance values */ |
878 |
|
sky_clearness = 12.0; |
879 |
|
|
880 |
|
/* Limit sky brightness */ |
881 |
< |
if (sky_brightness < 0.05) |
881 |
> |
if (sky_brightness < 0.01) |
882 |
|
sky_brightness = 0.01; |
883 |
|
|
884 |
|
while (((fabs(diff_irrad - test1) > 10.0) || |
902 |
|
sky_clearness = 12.0; |
903 |
|
|
904 |
|
/* Limit sky brightness */ |
905 |
< |
if (sky_brightness < 0.05) |
905 |
> |
if (sky_brightness < 0.01) |
906 |
|
sky_brightness = 0.01; |
907 |
|
} |
908 |
|
|