| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: gensdaymtx.c,v 1.8 2025/06/07 05:09:45 greg Exp $";
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#endif
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#include <stdlib.h>
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#include <ctype.h>
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#endif
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#include "atmos.h"
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#include "copyright.h"
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#include "data.h"
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#include "platform.h"
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#include "rtio.h"
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#include "rtmath.h"
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#include "sun.h"
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#include "loadEPW.h"
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const double SUN_ANG_DEG = 0.533; /* sun full-angle in degrees */
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const double ARCTIC_LAT = 67.;
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const double TROPIC_LAT = 23.;
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const int SUMMER_START = 4;
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const int SUMMER_END = 9;
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const double GNORM = 0.777778;
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const double M_PER_KM = 1e3;
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/* Mean normalized relative daylight spectra where CCT = 6415K for overcast */
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const double D6415[NSSAMP] = {
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0.63231, 1.06171, 1.00779, 1.36423, 1.34133,
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1.27258, 1.26276, 1.26352, 1.22201, 1.13246,
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1.0434, 1.05547, 0.98212, 0.94445, 0.9722,
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0.82387, 0.87853, 0.82559, 0.75111, 0.78925
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};
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enum {
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NSUNPATCH = 4 /* max. # patches to spread sun into */
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};
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double altitude; /* Solar altitude (radians) */
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double azimuth; /* Solar azimuth (radians) */
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int julian_date; /* Julian date */
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double sun_zenith; /* Sun zenith angle (radians) */
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int nskypatch; /* number of Reinhart patches */
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float *rh_palt; /* sky patch altitudes (radians) */
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float *rh_pazi; /* sky patch azimuths (radians) */
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float *rh_dom; /* sky patch solid angle (sr) */
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FVECT sundir;
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double sun_ct; /* cos(theta) of sun altitude angle */
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int input = 0; /* Input type */
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int output = 0; /* Output type */
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int nsuns = NSUNPATCH; /* number of sun patches to use */
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double fixed_sun_sa = -1; /* fixed solid angle per sun? */
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int verbose = 0; /* progress reports to stderr? */
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int outfmt = 'a'; /* output format */
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int rhsubdiv = 1; /* Reinhart sky subdivisions */
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COLOR skycolor = {.96, 1.004, 1.118}; /* sky coloration */
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COLOR suncolor = {1., 1., 1.}; /* sun color */
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double grefl = .2; /* ground reflectance */
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static inline double
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deg_to_rad
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(
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double deg
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)
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{
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return deg * (PI / 180.);
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}
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static inline double
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rad_to_deg
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(
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double rad
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)
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{
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return rad * (180. / PI);
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}
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static inline void
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vectorize
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(
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double altitude,
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double azimuth,
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FVECT v
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)
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{
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v[1] = cos(altitude);
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v[0] = (v)[1] * sin(azimuth);
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v[1] *= cos(azimuth);
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v[2] = sin(altitude);
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}
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static inline double
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wmean2
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(
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const double a,
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const double b,
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const double x
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)
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{
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return a * (1 - x) + b * x;
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}
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static inline double
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wmean
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(
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const double a,
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const double x,
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const double b,
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const double y
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)
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{
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return (a * x + b * y) / (a + b);
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}
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static int
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make_directory
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(
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const char *path
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)
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{
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#ifdef _WIN32
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if (CreateDirectory(path, NULL) || GetLastError() == ERROR_ALREADY_EXISTS) {
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return 1;
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}
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return 0;
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#else
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if (mkdir(path, 0777) == 0 || errno == EEXIST) {
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return 1;
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}
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return 0;
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#endif
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}
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static const char *
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getfmtname
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(
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int fmt
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)
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{
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switch (fmt) {
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case 'a':
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return ("ascii");
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case 'f':
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return ("float");
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case 'd':
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return ("double");
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}
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return ("unknown");
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}
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static double
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get_overcast_zenith_brightness
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(
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const double sundir[3]
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)
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{
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double zenithbr;
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if (sundir[2] < 0) {
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zenithbr = 0;
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} else {
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zenithbr = (8.6 * sundir[2] + .123) * 1000.0 / D65EFFICACY;
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}
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return zenithbr;
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}
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/* from gensky.c */
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static double
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get_overcast_brightness
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(
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const double dz,
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const double zenithbr
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)
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{
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double groundbr = zenithbr * GNORM;
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return wmean(pow(dz + 1.01, 10),
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zenithbr * (1 + 2 * dz) / 3,
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pow(dz + 1.01, -10), groundbr);
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}
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double
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solar_sunset
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(
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int month,
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int day
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)
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{
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float W;
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W = -1 * (tan(s_latitude) * tan(sdec(jdate(month, day))));
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return 12 + (PI / 2 - atan2(W, sqrt(1 - W * W))) * 180 / (PI * 15);
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}
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double
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solar_sunrise
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(
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int month,
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int day
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)
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{
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float W;
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W = -1 * (tan(s_latitude) * tan(sdec(jdate(month, day))));
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return 12 - (PI / 2 - atan2(W, sqrt(1 - W * W))) * 180 / (PI * 15);
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}
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int
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rh_init
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(
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void
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)
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{
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#define NROW 7
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static const int tnaz[NROW] = {30, 30, 24, 24, 18, 12, 6};
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const double alpha = (PI / 2.) / (NROW * rhsubdiv + .5);
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int p, i, j;
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/* allocate patch angle arrays */
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nskypatch = 0;
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for (p = 0; p < NROW; p++) {
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nskypatch += tnaz[p];
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}
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nskypatch *= rhsubdiv * rhsubdiv;
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nskypatch += 2;
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rh_palt = (float *)malloc(sizeof(float) * nskypatch);
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rh_pazi = (float *)malloc(sizeof(float) * nskypatch);
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rh_dom = (float *)malloc(sizeof(float) * nskypatch);
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if ((rh_palt == NULL) | (rh_pazi == NULL) | (rh_dom == NULL)) {
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fprintf(stderr, "%s: out of memory in rh_init()\n", progname);
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exit(1);
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}
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rh_palt[0] = -PI / 2.; /* ground & zenith patches */
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rh_pazi[0] = 0.;
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rh_dom[0] = 2. * PI;
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rh_palt[nskypatch - 1] = PI / 2.;
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rh_pazi[nskypatch - 1] = 0.;
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rh_dom[nskypatch - 1] = 2. * PI * (1. - cos(alpha * .5));
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p = 1; /* "normal" patches */
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for (i = 0; i < NROW * rhsubdiv; i++) {
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const float ralt = alpha * (i + .5);
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const int ninrow = tnaz[i / rhsubdiv] * rhsubdiv;
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const float dom =
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2. * PI * (sin(alpha * (i + 1)) - sin(alpha * i)) / (double)ninrow;
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for (j = 0; j < ninrow; j++) {
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rh_palt[p] = ralt;
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rh_pazi[p] = 2. * PI * j / (double)ninrow;
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rh_dom[p++] = dom;
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}
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}
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return nskypatch;
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#undef NROW
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}
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/* Resize daylight matrix (GW) */
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float *
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resize_dmatrix
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(
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float *mtx_data,
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int nsteps,
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int npatch
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)
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{
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| 275 |
if (mtx_data == NULL) {
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mtx_data = (float * ) malloc(sizeof(float) * NSSAMP * nsteps * npatch);
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}else{
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mtx_data = (float * ) realloc(mtx_data,
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sizeof(float) * NSSAMP * nsteps * npatch);
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}
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if (mtx_data == NULL) {
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| 282 |
fprintf(stderr,
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"%s: out of memory in resize_dmatrix(%d,%d)\n",
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progname, nsteps, npatch);
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exit(1);
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}
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| 287 |
return mtx_data;
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}
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| 290 |
static Atmosphere
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| 291 |
init_atmos
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| 292 |
(
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| 293 |
const double aod,
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| 294 |
const double grefl
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| 295 |
)
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| 296 |
{
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| 297 |
Atmosphere atmos = {
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| 298 |
.ozone_density = {
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| 299 |
.layers = {
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| 300 |
{
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| 301 |
.width = 25000.0,
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| 302 |
.exp_term = 0.0,
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| 303 |
.exp_scale = 0.0,
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.linear_term = 1.0 / 15000.0,
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| 305 |
.constant_term = -2.0 / 3.0
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| 306 |
},
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| 307 |
{
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| 308 |
.width = AH,
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| 309 |
.exp_term = 0.0,
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| 310 |
.exp_scale = 0.0,
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| 311 |
.linear_term = -1.0 / 15000.0,
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| 312 |
.constant_term = 8.0 / 3.0
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| 313 |
},
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| 314 |
}
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| 315 |
},
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| 316 |
.rayleigh_density = {
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| 317 |
.layers = {
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{
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| 319 |
.width = AH,
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| 320 |
.exp_term = 1.0,
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.exp_scale = -1.0 / HR_MS,
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| 322 |
.linear_term = 0.0,
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| 323 |
.constant_term = 0.0
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| 324 |
},
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| 325 |
}
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| 326 |
},
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| 327 |
.beta_r0 = BR0_MS,
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| 328 |
.beta_scale = aod / AOD0_CA,
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| 329 |
.beta_m = NULL,
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| 330 |
.grefl = grefl
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| 331 |
};
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| 332 |
return atmos;
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| 333 |
}
|
| 334 |
|
| 335 |
static DpPaths
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| 336 |
get_dppaths
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| 337 |
(
|
| 338 |
const char *dir,
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| 339 |
const double aod,
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| 340 |
const char *mname,
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| 341 |
const char *tag
|
| 342 |
)
|
| 343 |
{
|
| 344 |
DpPaths paths;
|
| 345 |
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| 346 |
snprintf(paths.tau, PATH_MAX, "%s%ctau_%s_%s_%.2f.dat",
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| 347 |
dir, DIRSEP, tag, mname, aod);
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| 348 |
snprintf(paths.scat, PATH_MAX, "%s%cscat_%s_%s_%.2f.dat",
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| 349 |
dir, DIRSEP, tag, mname, aod);
|
| 350 |
snprintf(paths.scat1m, PATH_MAX, "%s%cscat1m_%s_%s_%.2f.dat",
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| 351 |
dir, DIRSEP, tag, mname, aod);
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| 352 |
snprintf(paths.irrad, PATH_MAX, "%s%cirrad_%s_%s_%.2f.dat",
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| 353 |
dir, DIRSEP, tag, mname, aod);
|
| 354 |
|
| 355 |
return paths;
|
| 356 |
}
|
| 357 |
|
| 358 |
|
| 359 |
static void
|
| 360 |
set_rayleigh_density_profile
|
| 361 |
(
|
| 362 |
Atmosphere *atmos,
|
| 363 |
char *tag,
|
| 364 |
const int is_summer,
|
| 365 |
const double s_latitude
|
| 366 |
)
|
| 367 |
{
|
| 368 |
/* Set rayleigh density profile */
|
| 369 |
if (fabs(s_latitude * 180.0 / PI) > ARCTIC_LAT) {
|
| 370 |
tag[0] = 's';
|
| 371 |
if (is_summer) {
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| 372 |
tag[1] = 's';
|
| 373 |
atmos->rayleigh_density.layers[0].exp_scale = -1.0 / HR_SS;
|
| 374 |
atmos->beta_r0 = BR0_SS;
|
| 375 |
} else {
|
| 376 |
tag[1] = 'w';
|
| 377 |
atmos->rayleigh_density.layers[0].exp_scale = -1.0 / HR_SW;
|
| 378 |
atmos->beta_r0 = BR0_SW;
|
| 379 |
}
|
| 380 |
} else if (fabs(s_latitude * 180.0 / PI) > TROPIC_LAT) {
|
| 381 |
tag[0] = 'm';
|
| 382 |
if (is_summer) {
|
| 383 |
tag[1] = 's';
|
| 384 |
atmos->rayleigh_density.layers[0].exp_scale = -1.0 / HR_MS;
|
| 385 |
atmos->beta_r0 = BR0_MS;
|
| 386 |
} else {
|
| 387 |
tag[1] = 'w';
|
| 388 |
atmos->rayleigh_density.layers[0].exp_scale = -1.0 / HR_MW;
|
| 389 |
atmos->beta_r0 = BR0_MW;
|
| 390 |
}
|
| 391 |
} else {
|
| 392 |
tag[0] = 't';
|
| 393 |
tag[1] = 'r';
|
| 394 |
atmos->rayleigh_density.layers[0].exp_scale = -1.0 / HR_T;
|
| 395 |
atmos->beta_r0 = BR0_T;
|
| 396 |
}
|
| 397 |
tag[2] = '\0';
|
| 398 |
}
|
| 399 |
|
| 400 |
|
| 401 |
/* Add in solar direct to nearest sky patches (GW) */
|
| 402 |
void
|
| 403 |
add_direct
|
| 404 |
(
|
| 405 |
DATARRAY *tau,
|
| 406 |
DATARRAY *scat,
|
| 407 |
DATARRAY *scat1m,
|
| 408 |
DATARRAY *irrad,
|
| 409 |
double ccover,
|
| 410 |
double dirnorm,
|
| 411 |
float *parr
|
| 412 |
)
|
| 413 |
{
|
| 414 |
FVECT svec;
|
| 415 |
double near_dprod[NSUNPATCH];
|
| 416 |
int near_patch[NSUNPATCH];
|
| 417 |
double wta[NSUNPATCH], wtot;
|
| 418 |
int i, j, p;
|
| 419 |
|
| 420 |
/* identify nsuns closest patches */
|
| 421 |
for (i = nsuns; i--;) {
|
| 422 |
near_dprod[i] = -1.;
|
| 423 |
}
|
| 424 |
vectorize(altitude, azimuth, svec);
|
| 425 |
for (p = 1; p < nskypatch; p++) {
|
| 426 |
FVECT pvec;
|
| 427 |
double dprod;
|
| 428 |
vectorize(rh_palt[p], rh_pazi[p], pvec);
|
| 429 |
dprod = DOT(pvec, svec);
|
| 430 |
for (i = 0; i < nsuns; i++) {
|
| 431 |
if (dprod > near_dprod[i]) {
|
| 432 |
for (j = nsuns; --j > i;) {
|
| 433 |
near_dprod[j] = near_dprod[j - 1];
|
| 434 |
near_patch[j] = near_patch[j - 1];
|
| 435 |
}
|
| 436 |
near_dprod[i] = dprod;
|
| 437 |
near_patch[i] = p;
|
| 438 |
break;
|
| 439 |
}
|
| 440 |
}
|
| 441 |
}
|
| 442 |
/* Get solar radiance */
|
| 443 |
double sun_radiance[NSSAMP] = {0};
|
| 444 |
get_solar_radiance(tau, scat, scat1m, sundir, ER, sun_ct, sun_radiance);
|
| 445 |
if (ccover > 0) {
|
| 446 |
double zenithbr = get_overcast_zenith_brightness(sundir);
|
| 447 |
double skybr = get_overcast_brightness(sundir[2], zenithbr);
|
| 448 |
int l;
|
| 449 |
for (l = 0; l < NSSAMP; ++l) {
|
| 450 |
sun_radiance[l] = wmean2(sun_radiance[l], D6415[l] * skybr / WVLSPAN, ccover);
|
| 451 |
}
|
| 452 |
}
|
| 453 |
/* Normalize */
|
| 454 |
double sum = 0.0;
|
| 455 |
for (i = 0; i < NSSAMP; ++i) {
|
| 456 |
sum += sun_radiance[i];
|
| 457 |
}
|
| 458 |
double mean = sum / NSSAMP;
|
| 459 |
|
| 460 |
double intensity = mean * WVLSPAN;
|
| 461 |
if (dirnorm > 0) {
|
| 462 |
intensity = dirnorm / SOLOMG / WHTEFFICACY;
|
| 463 |
}
|
| 464 |
double dir_ratio = 1.;
|
| 465 |
if (mean > 0) {
|
| 466 |
dir_ratio = intensity / mean;
|
| 467 |
}
|
| 468 |
for (i = 0; i < NSSAMP; ++i) {
|
| 469 |
sun_radiance[i] *= dir_ratio;
|
| 470 |
}
|
| 471 |
|
| 472 |
/* weight by proximity */
|
| 473 |
wtot = 0;
|
| 474 |
for (i = nsuns; i--;) {
|
| 475 |
wtot += wta[i] = 1. / (1.002 - near_dprod[i]);
|
| 476 |
}
|
| 477 |
/* add to nearest patch radiances */
|
| 478 |
for (i = nsuns; i--;) {
|
| 479 |
float *pdest = parr + NSSAMP * near_patch[i];
|
| 480 |
int k;
|
| 481 |
for (k = 0; k < NSSAMP; k++) {
|
| 482 |
*pdest++ = sun_radiance[k] * wta[i] / wtot;
|
| 483 |
}
|
| 484 |
}
|
| 485 |
}
|
| 486 |
|
| 487 |
|
| 488 |
void
|
| 489 |
calc_sky_patch_radiance
|
| 490 |
(
|
| 491 |
DATARRAY *scat,
|
| 492 |
DATARRAY *scat1m,
|
| 493 |
DATARRAY *irrad_clear,
|
| 494 |
double ccover,
|
| 495 |
double dif_ratio,
|
| 496 |
double overcast_zenithbr,
|
| 497 |
FVECT view_point,
|
| 498 |
float *parr
|
| 499 |
)
|
| 500 |
{
|
| 501 |
double mu_sky; /* Sun-sky point azimuthal angle */
|
| 502 |
double sspa; /* Sun-sky point angle */
|
| 503 |
int i;
|
| 504 |
for (i = 1; i < nskypatch; i++) {
|
| 505 |
FVECT rdir_sky;
|
| 506 |
vectorize(rh_palt[i], rh_pazi[i], rdir_sky);
|
| 507 |
mu_sky = fdot(view_point, rdir_sky) / ER;
|
| 508 |
sspa = fdot(rdir_sky, sundir);
|
| 509 |
|
| 510 |
SCOLOR sky_radiance = {0};
|
| 511 |
get_sky_radiance(scat, scat1m, ER, mu_sky, sun_ct, sspa, sky_radiance);
|
| 512 |
int k;
|
| 513 |
for (k = 0; k < NSSAMP; ++k) {
|
| 514 |
sky_radiance[k] *= WVLSPAN;
|
| 515 |
}
|
| 516 |
|
| 517 |
if (ccover > 0) {
|
| 518 |
double skybr = get_overcast_brightness(rdir_sky[2], overcast_zenithbr);
|
| 519 |
for (k = 0; k < NSSAMP; ++k) {
|
| 520 |
sky_radiance[k] = wmean2(sky_radiance[k], skybr * D6415[k], ccover);
|
| 521 |
}
|
| 522 |
}
|
| 523 |
|
| 524 |
/* calibration */
|
| 525 |
for (k = 0; k < NSSAMP; ++k) {
|
| 526 |
sky_radiance[k] *= dif_ratio;
|
| 527 |
}
|
| 528 |
|
| 529 |
for (k = 0; k < NSSAMP; ++k) {
|
| 530 |
parr[NSSAMP * i + k] = sky_radiance[k];
|
| 531 |
}
|
| 532 |
}
|
| 533 |
}
|
| 534 |
|
| 535 |
|
| 536 |
/* Compute sky patch radiance values (modified by GW) */
|
| 537 |
void
|
| 538 |
compute_sky
|
| 539 |
(
|
| 540 |
DATARRAY *tau,
|
| 541 |
DATARRAY *scat,
|
| 542 |
DATARRAY *scat1m,
|
| 543 |
DATARRAY *irrad,
|
| 544 |
double ccover,
|
| 545 |
double difhor,
|
| 546 |
FVECT view_point,
|
| 547 |
float *parr
|
| 548 |
)
|
| 549 |
{
|
| 550 |
float sun_zenith;
|
| 551 |
SCOLOR sky_radiance = {0};
|
| 552 |
SCOLOR ground_radiance = {0};
|
| 553 |
SCOLR sky_sclr = {0};
|
| 554 |
SCOLR ground_sclr = {0};
|
| 555 |
const double radius = VLEN(view_point);
|
| 556 |
const double sun_ct = fdot(view_point, sundir) / radius;
|
| 557 |
const FVECT rdir_grnd = {0, 0, -1};
|
| 558 |
const double mu_grnd = fdot(view_point, rdir_grnd) / radius;
|
| 559 |
const double nu_grnd = fdot(rdir_grnd, sundir);
|
| 560 |
|
| 561 |
/* Calculate sun zenith angle (don't let it dip below horizon) */
|
| 562 |
/* Also limit minimum angle to keep circumsolar off zenith */
|
| 563 |
if (altitude <= 0.0) {
|
| 564 |
sun_zenith = deg_to_rad(90.0);
|
| 565 |
}else if (altitude >= deg_to_rad(87.0)) {
|
| 566 |
sun_zenith = deg_to_rad(3.0);
|
| 567 |
}else{
|
| 568 |
sun_zenith = deg_to_rad(90.0) - altitude;
|
| 569 |
}
|
| 570 |
|
| 571 |
double overcast_zenithbr = get_overcast_zenith_brightness(sundir);
|
| 572 |
|
| 573 |
/* diffuse calibration factor */
|
| 574 |
double dif_ratio = 1;
|
| 575 |
if (difhor > 0) {
|
| 576 |
DATARRAY *indirect_irradiance_clear = get_indirect_irradiance(irrad, radius, sun_ct);
|
| 577 |
double overcast_ghi = overcast_zenithbr * 7.0 * PI / 9.0;
|
| 578 |
double diffuse_irradiance = 0;
|
| 579 |
int l;
|
| 580 |
for (l = 0; l < NSSAMP; ++l) {
|
| 581 |
diffuse_irradiance += indirect_irradiance_clear->arr.d[l] * 20; /* 20nm interval */
|
| 582 |
}
|
| 583 |
/* free(indirect_irradiance_clear); */
|
| 584 |
diffuse_irradiance = wmean2(diffuse_irradiance, overcast_ghi, ccover);
|
| 585 |
if (diffuse_irradiance > 0) {
|
| 586 |
dif_ratio = difhor / WHTEFFICACY / diffuse_irradiance / 1.15; /* fudge */
|
| 587 |
}
|
| 588 |
}
|
| 589 |
|
| 590 |
/* Compute ground radiance (include solar contribution if any) */
|
| 591 |
get_ground_radiance(tau, scat, scat1m, irrad, view_point, rdir_grnd, radius,
|
| 592 |
mu_grnd, sun_ct, nu_grnd, grefl, sundir, parr);
|
| 593 |
int j;
|
| 594 |
for (j = 0; j < NSSAMP; j++) {
|
| 595 |
parr[j] *= WVLSPAN;
|
| 596 |
}
|
| 597 |
calc_sky_patch_radiance(scat, scat1m, irrad, ccover, dif_ratio, overcast_zenithbr, view_point, parr);
|
| 598 |
}
|
| 599 |
|
| 600 |
int
|
| 601 |
main
|
| 602 |
(
|
| 603 |
int argc,
|
| 604 |
char *argv[]
|
| 605 |
)
|
| 606 |
{
|
| 607 |
EPWheader *epw = NULL; /* EPW/WEA input file */
|
| 608 |
EPWrecord erec; /* current EPW/WEA input record */
|
| 609 |
int doheader = 1; /* output header? */
|
| 610 |
double rotation = 0.0; /* site rotation (degrees) */
|
| 611 |
double elevation = 0; /* site elevation (meters) */
|
| 612 |
int leap_day = 0; /* add leap day? */
|
| 613 |
int sun_hours_only = 0; /* only output sun hours? */
|
| 614 |
int dir_is_horiz; /* direct is meas. on horizontal? */
|
| 615 |
int ntsteps = 0; /* number of time steps */
|
| 616 |
int tstorage = 0; /* number of allocated time steps */
|
| 617 |
int nstored = 0; /* number of time steps in matrix */
|
| 618 |
int last_monthly = 0; /* month of last report */
|
| 619 |
double dni; /* direct normal illuminance */
|
| 620 |
double dhi; /* diffuse horizontal illuminance */
|
| 621 |
|
| 622 |
float *mtx_data = NULL;
|
| 623 |
int mtx_offset = 0;
|
| 624 |
double timeinterval = 0;
|
| 625 |
char lstag[3];
|
| 626 |
char *mie_path = getpath("mie_ca.dat", getrlibpath(), R_OK);
|
| 627 |
char *ddir = ".";
|
| 628 |
char mie_name[20] = "mie_ca";
|
| 629 |
int num_threads = 1;
|
| 630 |
int sorder = 4;
|
| 631 |
int solar_only = 0;
|
| 632 |
int sky_only = 0;
|
| 633 |
int i, j, k;
|
| 634 |
FVECT view_point = {0, 0, ER};
|
| 635 |
|
| 636 |
fixargv0(argv[0]);
|
| 637 |
|
| 638 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) {
|
| 639 |
switch (argv[i][1]) {
|
| 640 |
case 'd': /* solar (direct) only */
|
| 641 |
solar_only = 1;
|
| 642 |
break;
|
| 643 |
case 's': /* sky only (no direct) */
|
| 644 |
sky_only = 1;
|
| 645 |
break;
|
| 646 |
case 'g':
|
| 647 |
grefl = atof(argv[++i]);
|
| 648 |
break;
|
| 649 |
case 'm':
|
| 650 |
rhsubdiv = atoi(argv[++i]);
|
| 651 |
break;
|
| 652 |
case 'n':
|
| 653 |
num_threads = atoi(argv[++i]);
|
| 654 |
break;
|
| 655 |
case 'r': /* rotate distribution */
|
| 656 |
if (argv[i][2] && argv[i][2] != 'z') {
|
| 657 |
goto userr;
|
| 658 |
}
|
| 659 |
rotation = atof(argv[++i]);
|
| 660 |
break;
|
| 661 |
case 'u': /* solar hours only */
|
| 662 |
sun_hours_only = 1;
|
| 663 |
break;
|
| 664 |
case 'p':
|
| 665 |
ddir = argv[++i];
|
| 666 |
break;
|
| 667 |
case 'v': /* verbose progress reports */
|
| 668 |
verbose++;
|
| 669 |
break;
|
| 670 |
case 'h': /* turn off header */
|
| 671 |
doheader = 0;
|
| 672 |
break;
|
| 673 |
case '5': /* 5-phase calculation */
|
| 674 |
nsuns = 1;
|
| 675 |
fixed_sun_sa = PI / 360. * atof(argv[++i]);
|
| 676 |
if (fixed_sun_sa <= 0) {
|
| 677 |
fprintf(
|
| 678 |
stderr,
|
| 679 |
"%s: missing solar disk size argument for '-5' option\n",
|
| 680 |
progname);
|
| 681 |
exit(1);
|
| 682 |
}
|
| 683 |
fixed_sun_sa *= fixed_sun_sa * PI;
|
| 684 |
break;
|
| 685 |
case 'i':
|
| 686 |
timeinterval = atof(argv[++i]);
|
| 687 |
break;
|
| 688 |
case 'o': /* output format */
|
| 689 |
switch (argv[i][2]) {
|
| 690 |
case 'f':
|
| 691 |
case 'd':
|
| 692 |
case 'a':
|
| 693 |
outfmt = argv[i][2];
|
| 694 |
break;
|
| 695 |
default:
|
| 696 |
goto userr;
|
| 697 |
}
|
| 698 |
break;
|
| 699 |
default:
|
| 700 |
goto userr;
|
| 701 |
}
|
| 702 |
}
|
| 703 |
if (i < argc - 1) {
|
| 704 |
goto userr;
|
| 705 |
}
|
| 706 |
|
| 707 |
epw = EPWopen(argv[i]);
|
| 708 |
if (epw == NULL) {
|
| 709 |
exit(1);
|
| 710 |
}
|
| 711 |
if (i == argc - 1 && freopen(argv[i], "r", stdin) == NULL) {
|
| 712 |
fprintf(stderr, "%s: cannot open '%s' for input\n", progname, argv[i]);
|
| 713 |
exit(1);
|
| 714 |
}
|
| 715 |
if (verbose) {
|
| 716 |
if (i == argc - 1) {
|
| 717 |
fprintf(stderr, "%s: reading weather tape '%s'\n", progname, argv[i]);
|
| 718 |
}else{
|
| 719 |
fprintf(stderr, "%s: reading weather tape from <stdin>\n", progname);
|
| 720 |
}
|
| 721 |
}
|
| 722 |
s_latitude = epw->loc.latitude;
|
| 723 |
s_longitude = -epw->loc.longitude;
|
| 724 |
s_meridian = -15.*epw->loc.timezone;
|
| 725 |
elevation = epw->loc.elevation;
|
| 726 |
switch (epw->isWEA) { /* translate units */
|
| 727 |
case WEAnot:
|
| 728 |
case WEAradnorm:
|
| 729 |
input = 1; /* radiometric quantities */
|
| 730 |
dir_is_horiz = 0; /* direct is perpendicular meas. */
|
| 731 |
break;
|
| 732 |
case WEAradhoriz:
|
| 733 |
input = 1; /* radiometric quantities */
|
| 734 |
dir_is_horiz = 1; /* solar measured horizontally */
|
| 735 |
break;
|
| 736 |
case WEAphotnorm:
|
| 737 |
input = 2; /* photometric quantities */
|
| 738 |
dir_is_horiz = 0; /* direct is perpendicular meas. */
|
| 739 |
break;
|
| 740 |
default:
|
| 741 |
goto fmterr;
|
| 742 |
}
|
| 743 |
|
| 744 |
rh_init();
|
| 745 |
|
| 746 |
if (verbose) {
|
| 747 |
fprintf(stderr, "%s: location '%s %s'\n", progname, epw->loc.city, epw->loc.country);
|
| 748 |
fprintf(
|
| 749 |
stderr,
|
| 750 |
"%s: (lat,long)=(%.1f,%.1f) degrees north, west\n",
|
| 751 |
progname, s_latitude, s_longitude);
|
| 752 |
if (rotation != 0) {
|
| 753 |
fprintf(stderr, "%s: rotating output %.0f degrees\n", progname, rotation);
|
| 754 |
}
|
| 755 |
}
|
| 756 |
|
| 757 |
s_latitude = deg_to_rad(s_latitude);
|
| 758 |
s_longitude = deg_to_rad(s_longitude);
|
| 759 |
s_meridian = deg_to_rad(s_meridian);
|
| 760 |
/* initial allocation */
|
| 761 |
mtx_data = resize_dmatrix(mtx_data, tstorage = 2, nskypatch);
|
| 762 |
|
| 763 |
/* Load mie density data */
|
| 764 |
DATARRAY *mie_dp = getdata(mie_path);
|
| 765 |
if (mie_dp == NULL) {
|
| 766 |
fprintf(stderr, "Error reading mie data\n");
|
| 767 |
return 0;
|
| 768 |
}
|
| 769 |
|
| 770 |
if (epw->isWEA == WEAnot) {
|
| 771 |
fprintf(stderr, "EPW input\n");
|
| 772 |
} else if (epw->isWEA != WEAphotnorm) {
|
| 773 |
fprintf(stderr, "need WEA in photopic unit\n");
|
| 774 |
exit(1);
|
| 775 |
}
|
| 776 |
|
| 777 |
while ((j = EPWread(epw, &erec)) > 0) {
|
| 778 |
const int mo = erec.date.month+1;
|
| 779 |
const int da = erec.date.day;
|
| 780 |
const double hr = erec.date.hour;
|
| 781 |
double aod = erec.optdepth * M_PER_KM;
|
| 782 |
if (aod >= 999.0) {
|
| 783 |
aod = AOD0_CA;
|
| 784 |
fprintf(stderr, "aod is not set, using default value %.3f\n", AOD0_CA);
|
| 785 |
}
|
| 786 |
double cc = erec.skycover;
|
| 787 |
if (cc >= 99.0) {
|
| 788 |
cc = 0.0;
|
| 789 |
fprintf(stderr, "skycover is not set, using default value %.3f\n", 0.0);
|
| 790 |
}
|
| 791 |
double sda, sta, st;
|
| 792 |
int sun_in_sky;
|
| 793 |
|
| 794 |
/* compute solar position */
|
| 795 |
if ((mo == 2) & (da == 29)) {
|
| 796 |
julian_date = 60;
|
| 797 |
leap_day = 1;
|
| 798 |
} else{
|
| 799 |
julian_date = jdate(mo, da) + leap_day;
|
| 800 |
}
|
| 801 |
sda = sdec(julian_date);
|
| 802 |
sta = stadj(julian_date);
|
| 803 |
st = hr + sta;
|
| 804 |
if (timeinterval > 0) {
|
| 805 |
if (fabs(solar_sunrise(mo, da) - st) <= timeinterval/120) {
|
| 806 |
st = (st + timeinterval/120 + solar_sunrise(mo, da))/2;
|
| 807 |
}else if (fabs(solar_sunset(mo, da) - st) < timeinterval/120) {
|
| 808 |
st = (st - timeinterval/120 + solar_sunset(mo, da))/2;
|
| 809 |
}
|
| 810 |
}
|
| 811 |
altitude = salt(sda, st);
|
| 812 |
sun_in_sky = (altitude > -deg_to_rad(SUN_ANG_DEG / 2.));
|
| 813 |
|
| 814 |
azimuth = sazi(sda, st) + PI - deg_to_rad(rotation);
|
| 815 |
|
| 816 |
vectorize(altitude, azimuth, sundir);
|
| 817 |
if (sun_hours_only && !sun_in_sky) {
|
| 818 |
continue; /* skipping nighttime points */
|
| 819 |
}
|
| 820 |
sun_ct = fdot(view_point, sundir) / ER;
|
| 821 |
|
| 822 |
dni = erec.dirillum;
|
| 823 |
dhi = erec.diffillum;
|
| 824 |
|
| 825 |
mtx_offset = NSSAMP * nskypatch * nstored;
|
| 826 |
nstored += 1;
|
| 827 |
|
| 828 |
/* make space for next row */
|
| 829 |
if (nstored > tstorage) {
|
| 830 |
tstorage += (tstorage >> 1) + nstored + 7;
|
| 831 |
mtx_data = resize_dmatrix(mtx_data, tstorage, nskypatch);
|
| 832 |
}
|
| 833 |
ntsteps++; /* keep count of time steps */
|
| 834 |
|
| 835 |
/* compute sky patch values */
|
| 836 |
Atmosphere clear_atmos = init_atmos(aod, grefl);
|
| 837 |
int is_summer = (mo >= SUMMER_START && mo <= SUMMER_END);
|
| 838 |
if (s_latitude < 0) {
|
| 839 |
is_summer = !is_summer;
|
| 840 |
}
|
| 841 |
set_rayleigh_density_profile(&clear_atmos, lstag, is_summer, s_latitude);
|
| 842 |
|
| 843 |
clear_atmos.beta_m = mie_dp;
|
| 844 |
|
| 845 |
char gsdir[PATH_MAX];
|
| 846 |
size_t siz = strlen(ddir);
|
| 847 |
if (ISDIRSEP(ddir[siz - 1])) {
|
| 848 |
ddir[siz - 1] = '\0';
|
| 849 |
}
|
| 850 |
snprintf(gsdir, PATH_MAX, "%s%catmos_data", ddir, DIRSEP);
|
| 851 |
if (!make_directory(gsdir)) {
|
| 852 |
fprintf(stderr, "Failed creating atmos_data directory");
|
| 853 |
exit(1);
|
| 854 |
}
|
| 855 |
DpPaths clear_paths = get_dppaths(gsdir, aod, mie_name, lstag);
|
| 856 |
|
| 857 |
if (getpath(clear_paths.tau, ".", R_OK) == NULL ||
|
| 858 |
getpath(clear_paths.scat, ".", R_OK) == NULL ||
|
| 859 |
getpath(clear_paths.scat1m, ".", R_OK) == NULL ||
|
| 860 |
getpath(clear_paths.irrad, ".", R_OK) == NULL) {
|
| 861 |
fprintf(stderr, "# Pre-computing...\n");
|
| 862 |
if (!precompute(sorder, clear_paths, &clear_atmos, num_threads)) {
|
| 863 |
fprintf(stderr, "Pre-compute failed\n");
|
| 864 |
return 0;
|
| 865 |
}
|
| 866 |
}
|
| 867 |
|
| 868 |
DATARRAY *tau_clear_dp = getdata(clear_paths.tau);
|
| 869 |
DATARRAY *irrad_clear_dp = getdata(clear_paths.irrad);
|
| 870 |
DATARRAY *scat_clear_dp = getdata(clear_paths.scat);
|
| 871 |
DATARRAY *scat1m_clear_dp = getdata(clear_paths.scat1m);
|
| 872 |
|
| 873 |
if (!solar_only) {
|
| 874 |
compute_sky(tau_clear_dp, scat_clear_dp, scat1m_clear_dp, irrad_clear_dp,
|
| 875 |
cc, dhi, view_point, mtx_data + mtx_offset);
|
| 876 |
}
|
| 877 |
if (!sky_only) {
|
| 878 |
add_direct(tau_clear_dp, scat_clear_dp, scat1m_clear_dp, irrad_clear_dp,
|
| 879 |
cc, dni, mtx_data + mtx_offset);
|
| 880 |
}
|
| 881 |
/* monthly reporting */
|
| 882 |
if (verbose && mo != last_monthly) {
|
| 883 |
fprintf(stderr, "%s: stepping through month %d...\n", progname,
|
| 884 |
last_monthly = mo);
|
| 885 |
}
|
| 886 |
}
|
| 887 |
if (j != EOF) {
|
| 888 |
fprintf(stderr, "%s: error on input\n", progname);
|
| 889 |
exit(1);
|
| 890 |
}
|
| 891 |
EPWclose(epw); epw = NULL;
|
| 892 |
freedata(mie_dp);
|
| 893 |
if (!ntsteps) {
|
| 894 |
fprintf(stderr, "%s: no valid time steps on input\n", progname);
|
| 895 |
exit(1);
|
| 896 |
}
|
| 897 |
/* write out matrix */
|
| 898 |
if (outfmt != 'a') {
|
| 899 |
SET_FILE_BINARY(stdout);
|
| 900 |
}
|
| 901 |
#ifdef getc_unlocked
|
| 902 |
flockfile(stdout);
|
| 903 |
#endif
|
| 904 |
if (verbose) {
|
| 905 |
fprintf(stderr, "%s: writing %smatrix with %d time steps...\n", progname,
|
| 906 |
outfmt == 'a' ? "" : "binary ", nstored);
|
| 907 |
}
|
| 908 |
if (doheader) {
|
| 909 |
newheader("RADIANCE", stdout);
|
| 910 |
printargs(argc, argv, stdout);
|
| 911 |
printf("LATLONG= %.8f %.8f\n", rad_to_deg(s_latitude),
|
| 912 |
-rad_to_deg(s_longitude));
|
| 913 |
printf("NROWS=%d\n", nskypatch);
|
| 914 |
printf("NCOLS=%d\n", nstored);
|
| 915 |
printf("NCOMP=%d\n", NSSAMP);
|
| 916 |
fputwlsplit(WLPART, stdout);
|
| 917 |
if ((outfmt == 'f') | (outfmt == 'd')) {
|
| 918 |
fputendian(stdout);
|
| 919 |
}
|
| 920 |
fputformat((char *)getfmtname(outfmt), stdout);
|
| 921 |
putchar('\n');
|
| 922 |
}
|
| 923 |
/* patches are rows (outer sort) */
|
| 924 |
for (i = 0; i < nskypatch; i++) {
|
| 925 |
mtx_offset = NSSAMP * i;
|
| 926 |
switch (outfmt) {
|
| 927 |
case 'a':
|
| 928 |
for (j = 0; j < nstored; j++) {
|
| 929 |
for (k = NSSAMP - 1; k >= 0; k--) {
|
| 930 |
printf("%.3g ", mtx_data[mtx_offset + k]);
|
| 931 |
}
|
| 932 |
printf("\n");
|
| 933 |
mtx_offset += NSSAMP * nskypatch;
|
| 934 |
}
|
| 935 |
if (nstored > 1) {
|
| 936 |
fputc('\n', stdout);
|
| 937 |
}
|
| 938 |
break;
|
| 939 |
case 'f':
|
| 940 |
for (j = 0; j < nstored; j++) {
|
| 941 |
float ment[NSSAMP];
|
| 942 |
for (k = NSSAMP - 1; k >= 0; k--) {
|
| 943 |
ment[k] = mtx_data[mtx_offset + k];
|
| 944 |
}
|
| 945 |
putbinary(ment, sizeof(float), NSSAMP, stdout);
|
| 946 |
mtx_offset += NSSAMP * nskypatch;
|
| 947 |
}
|
| 948 |
break;
|
| 949 |
case 'd':
|
| 950 |
for (j = 0; j < nstored; j++) {
|
| 951 |
double ment[NSSAMP];
|
| 952 |
for (k = NSSAMP - 1; k >= 0; k--) {
|
| 953 |
ment[j] = mtx_data[mtx_offset + k];
|
| 954 |
}
|
| 955 |
putbinary(ment, sizeof(double), NSSAMP, stdout);
|
| 956 |
mtx_offset += NSSAMP * nskypatch;
|
| 957 |
}
|
| 958 |
break;
|
| 959 |
}
|
| 960 |
if (ferror(stdout)) {
|
| 961 |
goto writerr;
|
| 962 |
}
|
| 963 |
}
|
| 964 |
return 0;
|
| 965 |
|
| 966 |
userr:
|
| 967 |
fprintf(stderr,
|
| 968 |
"Usage: %s [-v][-h][-A][-d|-s|-n][-u][-D file [-M modfile]][-r "
|
| 969 |
"deg][-m N][-g r g b][-c r g b][-o{f|d}][-O{0|1}] [tape.wea]\n",
|
| 970 |
progname);
|
| 971 |
exit(1);
|
| 972 |
fmterr:
|
| 973 |
fprintf(stderr, "%s: weather tape format error in header\n", progname);
|
| 974 |
exit(1);
|
| 975 |
writerr:
|
| 976 |
fprintf(stderr, "%s: write error on output\n", progname);
|
| 977 |
exit(1);
|
| 978 |
}
|
