| 246 |
|
{ 101.18, 1.58, -1.10, -8.29 } |
| 247 |
|
}; |
| 248 |
|
|
| 249 |
+ |
#ifndef NSUNPATCH |
| 250 |
+ |
#define NSUNPATCH 4 /* # patches to spread sun into */ |
| 251 |
+ |
#endif |
| 252 |
+ |
|
| 253 |
|
extern int jdate(int month, int day); |
| 254 |
|
extern double stadj(int jd); |
| 255 |
|
extern double sdec(int jd); |
| 362 |
|
progname); |
| 363 |
|
} |
| 364 |
|
/* read weather tape header */ |
| 365 |
< |
if (scanf("place %[^\n]\n", buf) != 1) |
| 365 |
> |
if (scanf("place %[^\r\n] ", buf) != 1) |
| 366 |
|
goto fmterr; |
| 367 |
|
if (scanf("latitude %lf\n", &s_latitude) != 1) |
| 368 |
|
goto fmterr; |
| 398 |
|
fprintf(stderr, "%s: %d sky patches per time step\n", |
| 399 |
|
progname, nskypatch); |
| 400 |
|
} |
| 401 |
+ |
/* convert quantities to radians */ |
| 402 |
+ |
s_latitude = DegToRad(s_latitude); |
| 403 |
+ |
s_longitude = DegToRad(s_longitude); |
| 404 |
+ |
s_meridian = DegToRad(s_meridian); |
| 405 |
|
/* process each time step in tape */ |
| 406 |
|
while (scanf("%d %d %lf %lf %lf\n", &mo, &da, &hr, &dir, &dif) == 5) { |
| 407 |
|
double sda, sta; |
| 420 |
|
sda = sdec(julian_date); |
| 421 |
|
sta = stadj(julian_date); |
| 422 |
|
altitude = salt(sda, hr+sta); |
| 423 |
< |
azimuth = sazi(sda, hr+sta); |
| 423 |
> |
azimuth = sazi(sda, hr+sta) + PI; |
| 424 |
|
/* convert measured values */ |
| 425 |
|
if (dir_is_horiz && altitude > 0.) |
| 426 |
|
dir /= sin(altitude); |
| 459 |
|
switch (outfmt) { |
| 460 |
|
case 'a': |
| 461 |
|
for (j = 0; j < ntsteps; j++) { |
| 462 |
< |
printf("%.3e %.3e %.3e\n", mtx_data[mtx_offset], |
| 462 |
> |
printf("%.3g %.3g %.3g\n", mtx_data[mtx_offset], |
| 463 |
|
mtx_data[mtx_offset+1], |
| 464 |
|
mtx_data[mtx_offset+2]); |
| 465 |
|
mtx_offset += 3*nskypatch; |
| 466 |
|
} |
| 467 |
< |
fputc('\n', stdout); |
| 467 |
> |
if (ntsteps > 1) |
| 468 |
> |
fputc('\n', stdout); |
| 469 |
|
break; |
| 470 |
|
case 'f': |
| 471 |
|
for (j = 0; j < ntsteps; j++) { |
| 517 |
|
double norm_diff_illum; /* Normalized diffuse illuimnance */ |
| 518 |
|
double zlumin; /* Zenith luminance */ |
| 519 |
|
int i; |
| 511 |
– |
|
| 512 |
– |
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
| 513 |
– |
memset(parr, 0, sizeof(float)*3*nskypatch); |
| 514 |
– |
return; |
| 515 |
– |
} |
| 520 |
|
|
| 521 |
|
/* Calculate atmospheric precipitable water content */ |
| 522 |
|
apwc = CalcPrecipWater(dew_point); |
| 557 |
|
index = CalcSkyParamFromIllum(); |
| 558 |
|
} |
| 559 |
|
|
| 560 |
+ |
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
| 561 |
+ |
memset(parr, 0, sizeof(float)*3*nskypatch); |
| 562 |
+ |
return; |
| 563 |
+ |
} |
| 564 |
|
/* Compute ground radiance (include solar contribution if any) */ |
| 565 |
< |
parr[0] = diff_illum * (1./PI/WHTEFFICACY); |
| 565 |
> |
parr[0] = diff_illum; |
| 566 |
|
if (altitude > 0) |
| 567 |
< |
parr[0] += dir_illum * sin(altitude) * (1./PI/WHTEFFICACY); |
| 568 |
< |
parr[2] = parr[1] = parr[0]; |
| 567 |
> |
parr[0] += dir_illum * sin(altitude); |
| 568 |
> |
parr[2] = parr[1] = parr[0] *= grefl*(1./PI/WHTEFFICACY); |
| 569 |
|
|
| 570 |
|
/* Calculate Perez sky model parameters */ |
| 571 |
|
CalcPerezParam(sun_zenith, sky_clearness, sky_brightness, index); |
| 597 |
|
AddDirect(float *parr) |
| 598 |
|
{ |
| 599 |
|
FVECT svec; |
| 600 |
< |
double near_dprod[4]; |
| 601 |
< |
int near_patch[4]; |
| 602 |
< |
double wta[4], wtot; |
| 600 |
> |
double near_dprod[NSUNPATCH]; |
| 601 |
> |
int near_patch[NSUNPATCH]; |
| 602 |
> |
double wta[NSUNPATCH], wtot; |
| 603 |
|
int i, j, p; |
| 604 |
|
|
| 605 |
|
if (!do_sun || dir_illum < 1e-4) |
| 606 |
|
return; |
| 607 |
< |
/* identify 4 closest patches */ |
| 608 |
< |
for (i = 4; i--; ) |
| 607 |
> |
/* identify NSUNPATCH closest patches */ |
| 608 |
> |
for (i = NSUNPATCH; i--; ) |
| 609 |
|
near_dprod[i] = -1.; |
| 610 |
|
vector(svec, altitude, azimuth); |
| 611 |
|
for (p = 1; p < nskypatch; p++) { |
| 613 |
|
double dprod; |
| 614 |
|
rh_vector(pvec, p); |
| 615 |
|
dprod = DOT(pvec, svec); |
| 616 |
< |
for (i = 0; i < 4; i++) |
| 616 |
> |
for (i = 0; i < NSUNPATCH; i++) |
| 617 |
|
if (dprod > near_dprod[i]) { |
| 618 |
< |
for (j = 4; --j > i; ) { |
| 618 |
> |
for (j = NSUNPATCH; --j > i; ) { |
| 619 |
|
near_dprod[j] = near_dprod[j-1]; |
| 620 |
|
near_patch[j] = near_patch[j-1]; |
| 621 |
|
} |
| 625 |
|
} |
| 626 |
|
} |
| 627 |
|
wtot = 0; /* weight by proximity */ |
| 628 |
< |
for (i = 4; i--; ) |
| 628 |
> |
for (i = NSUNPATCH; i--; ) |
| 629 |
|
wtot += wta[i] = 1./(1.002 - near_dprod[i]); |
| 630 |
|
/* add to nearest patch radiances */ |
| 631 |
< |
for (i = 4; i--; ) |
| 632 |
< |
parr[near_patch[i]] += wta[i] * dir_illum / |
| 633 |
< |
(wtot * rh_dom[near_patch[i]]); |
| 631 |
> |
for (i = NSUNPATCH; i--; ) { |
| 632 |
> |
float *pdest = parr + 3*near_patch[i]; |
| 633 |
> |
float val_add = wta[i] * dir_illum / |
| 634 |
> |
(WHTEFFICACY * wtot * rh_dom[near_patch[i]]); |
| 635 |
> |
*pdest++ += val_add; |
| 636 |
> |
*pdest++ += val_add; |
| 637 |
> |
*pdest++ += val_add; |
| 638 |
> |
} |
| 639 |
|
} |
| 640 |
|
|
| 641 |
|
/* Initialize Reinhart sky patch positions (GW) */ |
| 669 |
|
for (i = 0; i < NROW*rhsubdiv; i++) { |
| 670 |
|
const float ralt = alpha*(i + .5); |
| 671 |
|
const int ninrow = tnaz[i/rhsubdiv]*rhsubdiv; |
| 672 |
< |
const float dom = (sin(alpha*(i+1)) - sin(alpha*i))/ninrow; |
| 672 |
> |
const float dom = 2.*PI*(sin(alpha*(i+1)) - sin(alpha*i)) / |
| 673 |
> |
(double)ninrow; |
| 674 |
|
for (j = 0; j < ninrow; j++) { |
| 675 |
|
rh_palt[p] = ralt; |
| 676 |
|
rh_pazi[p] = 2.*PI * j / (double)ninrow; |
