--- ray/src/gen/gendaymtx.c 2014/06/17 18:51:47 2.15 +++ ray/src/gen/gendaymtx.c 2022/03/11 18:04:39 2.39 @@ -1,5 +1,5 @@ #ifndef lint -static const char RCSid[] = "$Id: gendaymtx.c,v 2.15 2014/06/17 18:51:47 greg Exp $"; +static const char RCSid[] = "$Id: gendaymtx.c,v 2.39 2022/03/11 18:04:39 greg Exp $"; #endif /* * gendaymtx.c @@ -81,16 +81,15 @@ static const char RCSid[] = "$Id: gendaymtx.c,v 2.15 2 /* Include files */ #define _USE_MATH_DEFINES -#include #include -#include #include -#include "rtmath.h" #include "platform.h" +#include "rtmath.h" +#include "rtio.h" #include "color.h" +#include "sun.h" -char *progname; /* Program name */ -char errmsg[128]; /* Error message buffer */ +char *progname; /* Program name */ const double DC_SolarConstantE = 1367.0; /* Solar constant W/m^2 */ const double DC_SolarConstantL = 127.5; /* Solar constant klux */ @@ -135,7 +134,6 @@ extern void ComputeSky( float *parr ); /* Radiuans into degrees */ #define RadToDeg(rad) ((rad)*(180./PI)) - /* Perez sky model coefficients */ /* Reference: Perez, R., R. Seals, and J. Michalsky, 1993. "All- */ @@ -252,15 +250,7 @@ static const ModelCoeff DirectLumEff[8] = #define NSUNPATCH 4 /* max. # patches to spread sun into */ #endif -extern int jdate(int month, int day); -extern double stadj(int jd); -extern double sdec(int jd); -extern double salt(double sd, double st); -extern double sazi(double sd, double st); - /* sun calculation constants */ -extern double s_latitude; -extern double s_longitude; -extern double s_meridian; +#define SUN_ANG_DEG 0.533 /* sun full-angle in degrees */ int nsuns = NSUNPATCH; /* number of sun patches to use */ double fixed_sun_sa = -1; /* fixed solid angle per sun? */ @@ -280,17 +270,20 @@ float *rh_palt; /* sky patch altitudes (radians) */ float *rh_pazi; /* sky patch azimuths (radians) */ float *rh_dom; /* sky patch solid angle (sr) */ -#define vector(v,alt,azi) ( (v)[1] = tcos(alt), \ - (v)[0] = (v)[1]*tsin(azi), \ - (v)[1] *= tcos(azi), \ - (v)[2] = tsin(alt) ) +#define vector(v,alt,azi) ( (v)[1] = cos(alt), \ + (v)[0] = (v)[1]*sin(azi), \ + (v)[1] *= cos(azi), \ + (v)[2] = sin(alt) ) #define rh_vector(v,i) vector(v,rh_palt[i],rh_pazi[i]) #define rh_cos(i) tsin(rh_palt[i]) +#define solar_minute(jd,hr) ((24*60)*((jd)-1)+(int)((hr)*60.+.5)) + extern int rh_init(void); extern float * resize_dmatrix(float *mtx_data, int nsteps, int npatch); +extern void OutputSun(int id, int goodsun, FILE *fp, FILE *mfp); extern void AddDirect(float *parr); @@ -316,9 +309,16 @@ main(int argc, char *argv[]) int doheader = 1; /* output header? */ double rotation = 0; /* site rotation (degrees) */ double elevation; /* site elevation (meters) */ + int leap_day = 0; /* add leap day? */ + int sun_hours_only = 0; /* only output sun hours? */ int dir_is_horiz; /* direct is meas. on horizontal? */ + FILE *sunsfp = NULL; /* output file for individual suns */ + FILE *modsfp = NULL; /* modifier output file */ float *mtx_data = NULL; /* our matrix data */ - int ntsteps = 0; /* number of rows in matrix */ + int avgSky = 0; /* compute average sky r.t. matrix? */ + int ntsteps = 0; /* number of time steps */ + int tstorage = 0; /* number of allocated time steps */ + int nstored = 0; /* number of time steps in matrix */ int last_monthly = 0; /* month of last report */ int mo, da; /* month (1-12) and day (1-31) */ double hr; /* hour (local standard time) */ @@ -374,16 +374,40 @@ main(int argc, char *argv[]) skycolor[1] = atof(argv[++i]); skycolor[2] = atof(argv[++i]); break; + case 'D': /* output suns to file */ + if (strcmp(argv[++i], "-")) { + sunsfp = fopen(argv[i], "w"); + if (sunsfp == NULL) { + fprintf(stderr, + "%s: cannot open '%s' for output\n", + progname, argv[i]); + exit(1); + } + break; /* still may output matrix */ + } + sunsfp = stdout; /* sending to stdout, so... */ + /* fall through */ + case 'n': /* no matrix output */ + avgSky = -1; + rhsubdiv = 1; + /* fall through */ case 'd': /* solar (direct) only */ skycolor[0] = skycolor[1] = skycolor[2] = 0; - if (suncolor[1] <= 1e-4) - suncolor[0] = suncolor[1] = suncolor[2] = 1; + grefl[0] = grefl[1] = grefl[2] = 0; break; + case 'M': /* send sun modifiers to file */ + if ((modsfp = fopen(argv[++i], "w")) == NULL) { + fprintf(stderr, "%s: cannot open '%s' for output\n", + progname, argv[i]); + exit(1); + } + break; case 's': /* sky only (no direct) */ suncolor[0] = suncolor[1] = suncolor[2] = 0; - if (skycolor[1] <= 1e-4) - skycolor[0] = skycolor[1] = skycolor[2] = 1; break; + case 'u': /* solar hours only */ + sun_hours_only = 1; + break; case 'r': /* rotate distribution */ if (argv[i][2] && argv[i][2] != 'z') goto userr; @@ -391,8 +415,17 @@ main(int argc, char *argv[]) break; case '5': /* 5-phase calculation */ nsuns = 1; - fixed_sun_sa = 6.797e-05; + fixed_sun_sa = PI/360.*atof(argv[++i]); + if (fixed_sun_sa <= 0) { + fprintf(stderr, "%s: missing solar disk size argument for '-5' option\n", + progname); + exit(1); + } + fixed_sun_sa *= fixed_sun_sa*PI; break; + case 'A': /* compute average sky */ + avgSky = 1; + break; default: goto userr; } @@ -403,6 +436,9 @@ main(int argc, char *argv[]) progname, argv[i]); exit(1); } + if ((modsfp != NULL) & (sunsfp == NULL)) + fprintf(stderr, "%s: warning -M output will be empty without -D\n", + progname); if (verbose) { if (i == argc-1) fprintf(stderr, "%s: reading weather tape '%s'\n", @@ -445,8 +481,12 @@ main(int argc, char *argv[]) fprintf(stderr, "%s: location '%s'\n", progname, buf); fprintf(stderr, "%s: (lat,long)=(%.1f,%.1f) degrees north, west\n", progname, s_latitude, s_longitude); - fprintf(stderr, "%s: %d sky patches per time step\n", - progname, nskypatch); + if (avgSky >= 0) + fprintf(stderr, "%s: %d sky patches\n", + progname, nskypatch); + if (sunsfp) + fprintf(stderr, "%s: outputting suns to %s\n", + progname, sunsfp==stdout ? "stdout" : "file"); if (rotation != 0) fprintf(stderr, "%s: rotating output %.0f degrees\n", progname, rotation); @@ -455,31 +495,51 @@ main(int argc, char *argv[]) s_latitude = DegToRad(s_latitude); s_longitude = DegToRad(s_longitude); s_meridian = DegToRad(s_meridian); + /* initial allocation */ + mtx_data = resize_dmatrix(mtx_data, tstorage=2, nskypatch); /* process each time step in tape */ while (scanf("%d %d %lf %lf %lf\n", &mo, &da, &hr, &dir, &dif) == 5) { - static int step_alloc = 0; double sda, sta; - /* make space for next time step */ - mtx_offset = 3*nskypatch*ntsteps++; - if (ntsteps > step_alloc) { - step_alloc += step_alloc>>1 + 8; - mtx_data = resize_dmatrix(mtx_data, step_alloc, nskypatch); - } - if (dif <= 1e-4) { - memset(mtx_data+mtx_offset, 0, sizeof(float)*3*nskypatch); - continue; - } - if (verbose && mo != last_monthly) - fprintf(stderr, "%s: stepping through month %d...\n", - progname, last_monthly=mo); + int sun_in_sky; /* compute solar position */ - julian_date = jdate(mo, da); + if ((mo == 2) & (da == 29)) { + julian_date = 60; + leap_day = 1; + } else + julian_date = jdate(mo, da) + leap_day; sda = sdec(julian_date); sta = stadj(julian_date); altitude = salt(sda, hr+sta); + sun_in_sky = (altitude > -DegToRad(SUN_ANG_DEG/2.)); + if (sun_hours_only && !sun_in_sky) + continue; /* skipping nighttime points */ azimuth = sazi(sda, hr+sta) + PI - DegToRad(rotation); + + mtx_offset = 3*nskypatch*nstored; + nstored += !avgSky | !nstored; + /* make space for next row */ + if (nstored > tstorage) { + tstorage += (tstorage>>1) + nstored + 7; + mtx_data = resize_dmatrix(mtx_data, tstorage, nskypatch); + } + ntsteps++; /* keep count of time steps */ + + if (dir+dif <= 1e-4) { /* effectively nighttime? */ + if (!avgSky | !mtx_offset) + memset(mtx_data+mtx_offset, 0, + sizeof(float)*3*nskypatch); + /* output black sun? */ + if (sunsfp && sun_in_sky) + OutputSun(solar_minute(julian_date,hr), 0, + sunsfp, modsfp); + continue; + } + if (!sun_in_sky && dir > (input==1 ? 20. : 20.*WHTEFFICACY)) + fprintf(stderr, + "%s: warning - unusually bright at %.1f on %d-%d\n", + progname, hr, mo, da); /* convert measured values */ - if (dir_is_horiz && altitude > 0.) + if (dir_is_horiz && altitude > FTINY) dir /= sin(altitude); if (input == 1) { dir_irrad = dir; @@ -490,8 +550,28 @@ main(int argc, char *argv[]) } /* compute sky patch values */ ComputeSky(mtx_data+mtx_offset); + /* output sun if requested */ + if (sunsfp && sun_in_sky) + OutputSun(solar_minute(julian_date,hr), 1, + sunsfp, modsfp); + + if (avgSky < 0) /* no matrix? */ + continue; + AddDirect(mtx_data+mtx_offset); + /* update cumulative sky? */ + for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) + mtx_data[i] += mtx_data[mtx_offset+i]; + /* monthly reporting */ + if (verbose && mo != last_monthly) + fprintf(stderr, "%s: stepping through month %d...\n", + progname, last_monthly=mo); + /* note whether leap-day was given */ } + if (!ntsteps) { + fprintf(stderr, "%s: no valid time steps on input\n", progname); + exit(1); + } /* check for junk at end */ while ((i = fgetc(stdin)) != EOF) if (!isspace(i)) { @@ -502,6 +582,13 @@ main(int argc, char *argv[]) fputs(buf, stderr); fputc('\n', stderr); break; } + + if (avgSky < 0) /* no matrix output? */ + goto alldone; + + dif = 1./(double)ntsteps; /* average sky? */ + for (i = 3*nskypatch*(avgSky&(ntsteps>1)); i--; ) + mtx_data[i] *= dif; /* write out matrix */ if (outfmt != 'a') SET_FILE_BINARY(stdout); @@ -510,16 +597,18 @@ main(int argc, char *argv[]) #endif if (verbose) fprintf(stderr, "%s: writing %smatrix with %d time steps...\n", - progname, outfmt=='a' ? "" : "binary ", ntsteps); + progname, outfmt=='a' ? "" : "binary ", nstored); if (doheader) { newheader("RADIANCE", stdout); printargs(argc, argv, stdout); printf("LATLONG= %.8f %.8f\n", RadToDeg(s_latitude), -RadToDeg(s_longitude)); printf("NROWS=%d\n", nskypatch); - printf("NCOLS=%d\n", ntsteps); + printf("NCOLS=%d\n", nstored); printf("NCOMP=3\n"); - fputformat(getfmtname(outfmt), stdout); + if ((outfmt == 'f') | (outfmt == 'd')) + fputendian(stdout); + fputformat((char *)getfmtname(outfmt), stdout); putchar('\n'); } /* patches are rows (outer sort) */ @@ -527,29 +616,29 @@ main(int argc, char *argv[]) mtx_offset = 3*i; switch (outfmt) { case 'a': - for (j = 0; j < ntsteps; j++) { + for (j = 0; j < nstored; j++) { printf("%.3g %.3g %.3g\n", mtx_data[mtx_offset], mtx_data[mtx_offset+1], mtx_data[mtx_offset+2]); mtx_offset += 3*nskypatch; } - if (ntsteps > 1) + if (nstored > 1) fputc('\n', stdout); break; case 'f': - for (j = 0; j < ntsteps; j++) { - fwrite(mtx_data+mtx_offset, sizeof(float), 3, + for (j = 0; j < nstored; j++) { + putbinary(mtx_data+mtx_offset, sizeof(float), 3, stdout); mtx_offset += 3*nskypatch; } break; case 'd': - for (j = 0; j < ntsteps; j++) { + for (j = 0; j < nstored; j++) { double ment[3]; ment[0] = mtx_data[mtx_offset]; ment[1] = mtx_data[mtx_offset+1]; ment[2] = mtx_data[mtx_offset+2]; - fwrite(ment, sizeof(double), 3, stdout); + putbinary(ment, sizeof(double), 3, stdout); mtx_offset += 3*nskypatch; } break; @@ -557,17 +646,18 @@ main(int argc, char *argv[]) if (ferror(stdout)) goto writerr; } - if (fflush(stdout) == EOF) +alldone: + if (fflush(NULL) == EOF) goto writerr; if (verbose) fprintf(stderr, "%s: done.\n", progname); exit(0); userr: - fprintf(stderr, "Usage: %s [-v][-h][-d|-s][-r deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n", + fprintf(stderr, "Usage: %s [-v][-h][-A][-d|-s|-n][-u][-D file [-M modfile]][-r deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n", progname); exit(1); fmterr: - fprintf(stderr, "%s: input weather tape format error\n", progname); + fprintf(stderr, "%s: weather tape format error in header\n", progname); exit(1); writerr: fprintf(stderr, "%s: write error on output\n", progname); @@ -639,11 +729,6 @@ ComputeSky(float *parr) diff_illum = diff_irrad * WHTEFFICACY; dir_illum = dir_irrad * WHTEFFICACY; } - - if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ - memset(parr, 0, sizeof(float)*3*nskypatch); - return; - } /* Compute ground radiance (include solar contribution if any) */ parr[0] = diff_illum; if (altitude > 0) @@ -651,6 +736,10 @@ ComputeSky(float *parr) parr[2] = parr[1] = parr[0] *= (1./PI/WHTEFFICACY); multcolor(parr, grefl); + if (bright(skycolor) <= 1e-4) { /* 0 sky component? */ + memset(parr+3, 0, sizeof(float)*3*(nskypatch-1)); + return; + } /* Calculate Perez sky model parameters */ CalcPerezParam(sun_zenith, sky_clearness, sky_brightness, index); @@ -728,6 +817,26 @@ AddDirect(float *parr) } } +/* Output a sun to indicated file if appropriate for this time step */ +void +OutputSun(int id, int goodsun, FILE *fp, FILE *mfp) +{ + double srad; + FVECT sv; + + srad = DegToRad(SUN_ANG_DEG/2.); + srad = goodsun ? dir_illum/(WHTEFFICACY * PI*srad*srad) : 0; + vector(sv, altitude, azimuth); + fprintf(fp, "\nvoid light solar%d\n0\n0\n", id); + fprintf(fp, "3 %.3e %.3e %.3e\n", srad*suncolor[0], + srad*suncolor[1], srad*suncolor[2]); + fprintf(fp, "\nsolar%d source sun%d\n0\n0\n", id, id); + fprintf(fp, "4 %.6f %.6f %.6f %.4f\n", sv[0], sv[1], sv[2], SUN_ANG_DEG); + + if (mfp != NULL) /* saving modifier IDs? */ + fprintf(mfp, "solar%d\n", id); +} + /* Initialize Reinhart sky patch positions (GW) */ int rh_init(void) @@ -935,7 +1044,9 @@ int CalcSkyParamFromIllum() /* Convert illuminance to irradiance */ index = GetCategoryIndex(); diff_irrad = diff_illum / CalcDiffuseIllumRatio(index); - dir_irrad = dir_illum / CalcDirectIllumRatio(index); + dir_irrad = CalcDirectIllumRatio(index); + if (dir_irrad > 0.1) + dir_irrad = dir_illum / dir_irrad; /* Calculate sky brightness and clearness */ sky_brightness = CalcSkyBrightness();