81 |
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|
82 |
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/* Include files */ |
83 |
|
#define _USE_MATH_DEFINES |
84 |
– |
#include <stdio.h> |
84 |
|
#include <stdlib.h> |
86 |
– |
#include <string.h> |
85 |
|
#include <ctype.h> |
86 |
+ |
#include "platform.h" |
87 |
|
#include "rtmath.h" |
88 |
+ |
#include "rtio.h" |
89 |
|
#include "color.h" |
90 |
+ |
#include "sun.h" |
91 |
|
|
92 |
|
char *progname; /* Program name */ |
93 |
|
char errmsg[128]; /* Error message buffer */ |
252 |
|
#define NSUNPATCH 4 /* max. # patches to spread sun into */ |
253 |
|
#endif |
254 |
|
|
254 |
– |
extern int jdate(int month, int day); |
255 |
– |
extern double stadj(int jd); |
256 |
– |
extern double sdec(int jd); |
257 |
– |
extern double salt(double sd, double st); |
258 |
– |
extern double sazi(double sd, double st); |
259 |
– |
/* sun calculation constants */ |
260 |
– |
extern double s_latitude; |
261 |
– |
extern double s_longitude; |
262 |
– |
extern double s_meridian; |
263 |
– |
|
255 |
|
int nsuns = NSUNPATCH; /* number of sun patches to use */ |
256 |
|
double fixed_sun_sa = -1; /* fixed solid angle per sun? */ |
257 |
|
|
283 |
|
extern float * resize_dmatrix(float *mtx_data, int nsteps, int npatch); |
284 |
|
extern void AddDirect(float *parr); |
285 |
|
|
286 |
+ |
|
287 |
+ |
static const char * |
288 |
+ |
getfmtname(int fmt) |
289 |
+ |
{ |
290 |
+ |
switch (fmt) { |
291 |
+ |
case 'a': |
292 |
+ |
return("ascii"); |
293 |
+ |
case 'f': |
294 |
+ |
return("float"); |
295 |
+ |
case 'd': |
296 |
+ |
return("double"); |
297 |
+ |
} |
298 |
+ |
return("unknown"); |
299 |
+ |
} |
300 |
+ |
|
301 |
+ |
|
302 |
|
int |
303 |
|
main(int argc, char *argv[]) |
304 |
|
{ |
305 |
|
char buf[256]; |
306 |
+ |
int doheader = 1; /* output header? */ |
307 |
|
double rotation = 0; /* site rotation (degrees) */ |
308 |
|
double elevation; /* site elevation (meters) */ |
309 |
|
int dir_is_horiz; /* direct is meas. on horizontal? */ |
310 |
+ |
FILE *sunsfp = NULL; /* output file for individual suns */ |
311 |
|
float *mtx_data = NULL; /* our matrix data */ |
312 |
< |
int ntsteps = 0; /* number of rows in matrix */ |
312 |
> |
int avgSky = 0; /* compute average sky r.t. matrix? */ |
313 |
> |
int ntsteps = 0; /* number of time steps */ |
314 |
> |
int tstorage = 0; /* number of allocated time steps */ |
315 |
> |
int nstored = 0; /* number of time steps in matrix */ |
316 |
|
int last_monthly = 0; /* month of last report */ |
317 |
|
int mo, da; /* month (1-12) and day (1-31) */ |
318 |
|
double hr; /* hour (local standard time) */ |
332 |
|
case 'v': /* verbose progress reports */ |
333 |
|
verbose++; |
334 |
|
break; |
335 |
+ |
case 'h': /* turn off header */ |
336 |
+ |
doheader = 0; |
337 |
+ |
break; |
338 |
|
case 'o': /* output format */ |
339 |
|
switch (argv[i][2]) { |
340 |
|
case 'f': |
368 |
|
skycolor[1] = atof(argv[++i]); |
369 |
|
skycolor[2] = atof(argv[++i]); |
370 |
|
break; |
371 |
+ |
case 'n': /* no matrix output */ |
372 |
+ |
avgSky = -1; |
373 |
+ |
rhsubdiv = 1; |
374 |
+ |
/* fall through */ |
375 |
|
case 'd': /* solar (direct) only */ |
376 |
|
skycolor[0] = skycolor[1] = skycolor[2] = 0; |
377 |
< |
if (suncolor[1] <= 1e-4) |
359 |
< |
suncolor[0] = suncolor[1] = suncolor[2] = 1; |
377 |
> |
grefl[0] = grefl[1] = grefl[2] = 0; |
378 |
|
break; |
379 |
+ |
case 'D': /* output suns to file */ |
380 |
+ |
sunsfp = fopen(argv[++i], "w"); |
381 |
+ |
if (!sunsfp) { |
382 |
+ |
fprintf(stderr, "%s: cannot open '%s' for output\n", |
383 |
+ |
argv[0], argv[i]); |
384 |
+ |
exit(1); |
385 |
+ |
} |
386 |
+ |
fixed_sun_sa = PI/360.*0.533; |
387 |
+ |
fixed_sun_sa *= PI*fixed_sun_sa; |
388 |
+ |
break; |
389 |
|
case 's': /* sky only (no direct) */ |
390 |
|
suncolor[0] = suncolor[1] = suncolor[2] = 0; |
363 |
– |
if (skycolor[1] <= 1e-4) |
364 |
– |
skycolor[0] = skycolor[1] = skycolor[2] = 1; |
391 |
|
break; |
392 |
|
case 'r': /* rotate distribution */ |
393 |
|
if (argv[i][2] && argv[i][2] != 'z') |
396 |
|
break; |
397 |
|
case '5': /* 5-phase calculation */ |
398 |
|
nsuns = 1; |
399 |
< |
fixed_sun_sa = 6.797e-05; |
399 |
> |
fixed_sun_sa = PI/360.*atof(argv[++i]); |
400 |
> |
if (fixed_sun_sa <= 0) { |
401 |
> |
fprintf(stderr, "%s: missing solar disk size argument for '-5' option\n", |
402 |
> |
argv[0]); |
403 |
> |
exit(1); |
404 |
> |
} |
405 |
> |
fixed_sun_sa *= fixed_sun_sa*PI; |
406 |
|
break; |
407 |
+ |
case 'A': /* compute average sky */ |
408 |
+ |
avgSky = 1; |
409 |
+ |
break; |
410 |
|
default: |
411 |
|
goto userr; |
412 |
|
} |
469 |
|
s_latitude = DegToRad(s_latitude); |
470 |
|
s_longitude = DegToRad(s_longitude); |
471 |
|
s_meridian = DegToRad(s_meridian); |
472 |
+ |
/* initial allocation */ |
473 |
+ |
mtx_data = resize_dmatrix(mtx_data, tstorage=2, nskypatch); |
474 |
|
/* process each time step in tape */ |
475 |
|
while (scanf("%d %d %lf %lf %lf\n", &mo, &da, &hr, &dir, &dif) == 5) { |
476 |
|
double sda, sta; |
477 |
< |
/* make space for next time step */ |
478 |
< |
mtx_offset = 3*nskypatch*ntsteps++; |
479 |
< |
mtx_data = resize_dmatrix(mtx_data, ntsteps, nskypatch); |
477 |
> |
|
478 |
> |
mtx_offset = 3*nskypatch*nstored; |
479 |
> |
nstored += !avgSky | !nstored; |
480 |
> |
/* make space for next row */ |
481 |
> |
if (nstored > tstorage) { |
482 |
> |
tstorage += (tstorage>>1) + nstored + 7; |
483 |
> |
mtx_data = resize_dmatrix(mtx_data, tstorage, nskypatch); |
484 |
> |
} |
485 |
> |
ntsteps++; /* keep count of time steps */ |
486 |
|
if (dif <= 1e-4) { |
487 |
< |
memset(mtx_data+mtx_offset, 0, sizeof(float)*3*nskypatch); |
487 |
> |
if (!avgSky | !mtx_offset) |
488 |
> |
memset(mtx_data+mtx_offset, 0, sizeof(float)*3*nskypatch); |
489 |
|
continue; |
490 |
|
} |
447 |
– |
if (verbose && mo != last_monthly) |
448 |
– |
fprintf(stderr, "%s: stepping through month %d...\n", |
449 |
– |
progname, last_monthly=mo); |
491 |
|
/* compute solar position */ |
492 |
|
julian_date = jdate(mo, da); |
493 |
|
sda = sdec(julian_date); |
506 |
|
} |
507 |
|
/* compute sky patch values */ |
508 |
|
ComputeSky(mtx_data+mtx_offset); |
509 |
+ |
/* output sun if indicated */ |
510 |
+ |
if (sunsfp && (altitude > 0) & (dir_illum > 1e-4)) { |
511 |
+ |
double srad = dir_illum/(WHTEFFICACY * fixed_sun_sa); |
512 |
+ |
FVECT sv; |
513 |
+ |
vector(sv, altitude, azimuth); |
514 |
+ |
fprintf(sunsfp, "\nvoid light solar%d\n0\n0\n", ntsteps); |
515 |
+ |
fprintf(sunsfp, "3 %.3e %.3e %.3e\n", srad*suncolor[0], |
516 |
+ |
srad*suncolor[1], srad*suncolor[2]); |
517 |
+ |
fprintf(sunsfp, "\nsolar%d source sun%d\n0\n0\n", ntsteps, ntsteps); |
518 |
+ |
fprintf(sunsfp, "4 %.6f %.6f %.6f 0.533\n", sv[0], sv[1], sv[2]); |
519 |
+ |
} |
520 |
+ |
if (avgSky < 0) /* no matrix? */ |
521 |
+ |
continue; |
522 |
+ |
|
523 |
|
AddDirect(mtx_data+mtx_offset); |
524 |
+ |
/* update cumulative sky? */ |
525 |
+ |
for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) |
526 |
+ |
mtx_data[i] += mtx_data[mtx_offset+i]; |
527 |
+ |
/* monthly reporting */ |
528 |
+ |
if (verbose && mo != last_monthly) |
529 |
+ |
fprintf(stderr, "%s: stepping through month %d...\n", |
530 |
+ |
progname, last_monthly=mo); |
531 |
|
} |
532 |
+ |
if (!ntsteps) { |
533 |
+ |
fprintf(stderr, "%s: no valid time steps on input\n", progname); |
534 |
+ |
exit(1); |
535 |
+ |
} |
536 |
|
/* check for junk at end */ |
537 |
|
while ((i = fgetc(stdin)) != EOF) |
538 |
|
if (!isspace(i)) { |
543 |
|
fputs(buf, stderr); fputc('\n', stderr); |
544 |
|
break; |
545 |
|
} |
546 |
+ |
|
547 |
+ |
if (avgSky < 0) /* no matrix output? */ |
548 |
+ |
goto alldone; |
549 |
+ |
|
550 |
+ |
dif = 1./(double)ntsteps; /* average sky? */ |
551 |
+ |
for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) |
552 |
+ |
mtx_data[i] *= dif; |
553 |
|
/* write out matrix */ |
554 |
+ |
if (outfmt != 'a') |
555 |
+ |
SET_FILE_BINARY(stdout); |
556 |
|
#ifdef getc_unlocked |
557 |
|
flockfile(stdout); |
558 |
|
#endif |
559 |
|
if (verbose) |
560 |
|
fprintf(stderr, "%s: writing %smatrix with %d time steps...\n", |
561 |
< |
progname, outfmt=='a' ? "" : "binary ", ntsteps); |
561 |
> |
progname, outfmt=='a' ? "" : "binary ", nstored); |
562 |
> |
if (doheader) { |
563 |
> |
newheader("RADIANCE", stdout); |
564 |
> |
printargs(argc, argv, stdout); |
565 |
> |
printf("LATLONG= %.8f %.8f\n", RadToDeg(s_latitude), |
566 |
> |
-RadToDeg(s_longitude)); |
567 |
> |
printf("NROWS=%d\n", nskypatch); |
568 |
> |
printf("NCOLS=%d\n", nstored); |
569 |
> |
printf("NCOMP=3\n"); |
570 |
> |
if ((outfmt == 'f') | (outfmt == 'd')) |
571 |
> |
fputendian(stdout); |
572 |
> |
fputformat((char *)getfmtname(outfmt), stdout); |
573 |
> |
putchar('\n'); |
574 |
> |
} |
575 |
|
/* patches are rows (outer sort) */ |
576 |
|
for (i = 0; i < nskypatch; i++) { |
577 |
|
mtx_offset = 3*i; |
578 |
|
switch (outfmt) { |
579 |
|
case 'a': |
580 |
< |
for (j = 0; j < ntsteps; j++) { |
580 |
> |
for (j = 0; j < nstored; j++) { |
581 |
|
printf("%.3g %.3g %.3g\n", mtx_data[mtx_offset], |
582 |
|
mtx_data[mtx_offset+1], |
583 |
|
mtx_data[mtx_offset+2]); |
584 |
|
mtx_offset += 3*nskypatch; |
585 |
|
} |
586 |
< |
if (ntsteps > 1) |
586 |
> |
if (nstored > 1) |
587 |
|
fputc('\n', stdout); |
588 |
|
break; |
589 |
|
case 'f': |
590 |
< |
for (j = 0; j < ntsteps; j++) { |
591 |
< |
fwrite(mtx_data+mtx_offset, sizeof(float), 3, |
590 |
> |
for (j = 0; j < nstored; j++) { |
591 |
> |
putbinary(mtx_data+mtx_offset, sizeof(float), 3, |
592 |
|
stdout); |
593 |
|
mtx_offset += 3*nskypatch; |
594 |
|
} |
595 |
|
break; |
596 |
|
case 'd': |
597 |
< |
for (j = 0; j < ntsteps; j++) { |
597 |
> |
for (j = 0; j < nstored; j++) { |
598 |
|
double ment[3]; |
599 |
|
ment[0] = mtx_data[mtx_offset]; |
600 |
|
ment[1] = mtx_data[mtx_offset+1]; |
601 |
|
ment[2] = mtx_data[mtx_offset+2]; |
602 |
< |
fwrite(ment, sizeof(double), 3, stdout); |
602 |
> |
putbinary(ment, sizeof(double), 3, stdout); |
603 |
|
mtx_offset += 3*nskypatch; |
604 |
|
} |
605 |
|
break; |
607 |
|
if (ferror(stdout)) |
608 |
|
goto writerr; |
609 |
|
} |
610 |
< |
if (fflush(stdout) == EOF) |
610 |
> |
alldone: |
611 |
> |
if (fflush(NULL) == EOF) |
612 |
|
goto writerr; |
613 |
|
if (verbose) |
614 |
|
fprintf(stderr, "%s: done.\n", progname); |
615 |
|
exit(0); |
616 |
|
userr: |
617 |
< |
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", |
617 |
> |
fprintf(stderr, "Usage: %s [-v][-h][-A][-d|-s|-n][-D file][-r deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n", |
618 |
|
progname); |
619 |
|
exit(1); |
620 |
|
fmterr: |
621 |
< |
fprintf(stderr, "%s: input weather tape format error\n", progname); |
621 |
> |
fprintf(stderr, "%s: weather tape format error in header\n", progname); |
622 |
|
exit(1); |
623 |
|
writerr: |
624 |
|
fprintf(stderr, "%s: write error on output\n", progname); |
690 |
|
diff_illum = diff_irrad * WHTEFFICACY; |
691 |
|
dir_illum = dir_irrad * WHTEFFICACY; |
692 |
|
} |
604 |
– |
|
605 |
– |
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
606 |
– |
memset(parr, 0, sizeof(float)*3*nskypatch); |
607 |
– |
return; |
608 |
– |
} |
693 |
|
/* Compute ground radiance (include solar contribution if any) */ |
694 |
|
parr[0] = diff_illum; |
695 |
|
if (altitude > 0) |
697 |
|
parr[2] = parr[1] = parr[0] *= (1./PI/WHTEFFICACY); |
698 |
|
multcolor(parr, grefl); |
699 |
|
|
700 |
+ |
if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ |
701 |
+ |
memset(parr+3, 0, sizeof(float)*3*(nskypatch-1)); |
702 |
+ |
return; |
703 |
+ |
} |
704 |
|
/* Calculate Perez sky model parameters */ |
705 |
|
CalcPerezParam(sun_zenith, sky_clearness, sky_brightness, index); |
706 |
|
|
985 |
|
/* Convert illuminance to irradiance */ |
986 |
|
index = GetCategoryIndex(); |
987 |
|
diff_irrad = diff_illum / CalcDiffuseIllumRatio(index); |
988 |
< |
dir_irrad = dir_illum / CalcDirectIllumRatio(index); |
988 |
> |
dir_irrad = CalcDirectIllumRatio(index); |
989 |
> |
if (dir_irrad > 0.1) |
990 |
> |
dir_irrad = dir_illum / dir_irrad; |
991 |
|
|
992 |
|
/* Calculate sky brightness and clearness */ |
993 |
|
sky_brightness = CalcSkyBrightness(); |