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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* Copyright (c) 1994 *Fraunhofer Institut for Solar Energy Systems |
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* Oltmannstr 5, D-79100 Freiburg, Germany |
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/* Copyright (c) 1994,2006 *Fraunhofer Institut for Solar Energy Systems |
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* Heidenhofstr. 2, D-79110 Freiburg, Germany |
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* *Agence de l'Environnement et de la Maitrise de l'Energie |
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* Centre de Valbonne, 500 route des Lucioles, 06565 Sophia Antipolis Cedex, France |
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* *BOUYGUES |
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* 1 Avenue Eugene Freyssinet, Saint-Quentin-Yvelines, France |
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* |
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* 24.1.2006 some adjustments for cygwin compilation, inclusion of RADIANCE3.7 libraries, by J. Wienold |
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* 2011/10/08 [email protected]: |
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* - integrated coeff_perez.dat and defangles.dat |
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* - avoid some segfaults caused by out of range parameters and |
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* - numerically dangerous range checks |
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*/ |
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|
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|
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|
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/* |
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* gendaylit.c program to generate the angular distribution of the daylight. |
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* Our zenith is along the Z-axis, the X-axis |
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* points east, and the Y-axis points north. |
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*/ |
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|
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#define _USE_MATH_DEFINES |
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|
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include <stdlib.h> |
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#include <ctype.h> |
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|
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#include "rtio.h" |
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#include "fvect.h" |
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#include "color.h" |
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#include "paths.h" |
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|
34 |
< |
extern int jdate(int month, int day); |
32 |
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extern double stadj(int jd); |
33 |
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extern double sdec(int jd); |
34 |
< |
extern double salt(double sd, double st); |
35 |
< |
extern double sazi(double sd, double st); |
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#define DOT(v1,v2) (v1[0]*v2[0]+v1[1]*v2[1]+v1[2]*v2[2]) |
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|
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double normsc(); |
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#define DATFILE "coeff_perez.dat" |
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/*static char *rcsid="$Header$";*/ |
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|
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float coeff_perez[] = { |
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1.3525,-0.2576,-0.2690,-1.4366,-0.7670,0.0007,1.2734,-0.1233,2.8000,0.6004,1.2375,1.000,1.8734,0.6297,0.9738,0.2809,0.0356,-0.1246,-0.5718,0.9938, |
42 |
+ |
-1.2219,-0.7730,1.4148,1.1016,-0.2054,0.0367,-3.9128,0.9156,6.9750,0.1774,6.4477,-0.1239,-1.5798,-0.5081,-1.7812,0.1080,0.2624,0.0672,-0.2190,-0.4285, |
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-1.1000,-0.2515,0.8952,0.0156,0.2782,-0.1812,-4.5000,1.1766,24.7219,-13.0812,-37.7000,34.8438,-5.0000,1.5218,3.9229,-2.6204,-0.0156,0.1597,0.4199,-0.5562, |
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-0.5484,-0.6654,-0.2672,0.7117,0.7234,-0.6219,-5.6812,2.6297,33.3389,-18.3000,-62.2500,52.0781,-3.5000,0.0016,1.1477,0.1062,0.4659,-0.3296,-0.0876,-0.0329, |
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-0.6000,-0.3566,-2.5000,2.3250,0.2937,0.0496,-5.6812,1.8415,21.0000,-4.7656,-21.5906,7.2492,-3.5000,-0.1554,1.4062,0.3988,0.0032,0.0766,-0.0656,-0.1294, |
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-1.0156,-0.3670,1.0078,1.4051,0.2875,-0.5328,-3.8500,3.3750,14.0000,-0.9999,-7.1406,7.5469,-3.4000,-0.1078,-1.0750,1.5702,-0.0672,0.4016,0.3017,-0.4844, |
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-1.0000,0.0211,0.5025,-0.5119,-0.3000,0.1922,0.7023,-1.6317,19.0000,-5.0000,1.2438,-1.9094,-4.0000,0.0250,0.3844,0.2656,1.0468,-0.3788,-2.4517,1.4656, |
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-1.0500,0.0289,0.4260,0.3590,-0.3250,0.1156,0.7781,0.0025,31.0625,-14.5000,-46.1148,55.3750,-7.2312,0.4050,13.3500,0.6234,1.5000,-0.6426,1.8564,0.5636}; |
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float defangle_theta[] = {84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 0}; |
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|
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float defangle_phi[] = {0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312, 324, 336, 348, 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312, 324, 336, 348, 0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 0, 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 340, 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 0, 60, 120, 180, 240, 300, 0}; |
54 |
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|
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|
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/* Perez sky parametrization : epsilon and delta calculations from the direct and diffuse irradiances */ |
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double sky_brightness(); |
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double sky_clearness(); |
60 |
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|
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/* calculation of the direct and diffuse components from the Perez parametrization */ |
62 |
< |
double diffus_irradiance_from_sky_brightness(); |
62 |
> |
double diffuse_irradiance_from_sky_brightness(); |
63 |
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double direct_irradiance_from_sky_clearness(); |
64 |
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|
65 |
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|
72 |
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void check_irradiances(); |
73 |
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void check_illuminances(); |
74 |
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void illu_to_irra_index(); |
75 |
+ |
void print_error_sky(); |
76 |
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|
77 |
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|
78 |
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/* Perez sky luminance model */ |
64 |
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int lect_coeff_perez(char *filename,float **coeff_perez); |
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double calc_rel_lum_perez(double dzeta,double gamma,double Z, |
80 |
< |
double epsilon,double Delta,float *coeff_perez); |
80 |
> |
double epsilon,double Delta,float coeff_perez[]); |
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/* coefficients for the sky luminance perez model */ |
82 |
< |
void coeff_lum_perez(double Z, double epsilon, double Delta, float *coeff_perez); |
82 |
> |
void coeff_lum_perez(double Z, double epsilon, double Delta, float coeff_perez[]); |
83 |
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double radians(double degres); |
84 |
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double degres(double radians); |
85 |
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void theta_phi_to_dzeta_gamma(double theta,double phi,double *dzeta,double *gamma, double Z); |
86 |
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double integ_lv(float *lv,float *theta); |
73 |
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float *theta_ordered(char *filename); |
74 |
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float *phi_ordered(char *filename); |
75 |
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void skip_comments(FILE *fp); |
87 |
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|
88 |
+ |
void printdefaults(); |
89 |
+ |
void computesky(); |
90 |
+ |
void printhead(int ac, char** av); |
91 |
+ |
void userror(char* msg); |
92 |
+ |
void printsky(); |
93 |
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|
94 |
+ |
FILE * frlibopen(char* fname); |
95 |
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|
96 |
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/* astronomy and geometry*/ |
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double get_eccentricity(); |
98 |
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double air_mass(); |
82 |
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double get_angle_sun_direction(double sun_zenith, double sun_azimut, double direction_zenith, double direction_azimut); |
99 |
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|
100 |
+ |
extern int jdate(int month, int day); |
101 |
+ |
extern double stadj(int jd); |
102 |
+ |
extern double sdec(int jd); |
103 |
+ |
extern double salt(double sd, double st); |
104 |
+ |
extern double sazi(double sd, double st); |
105 |
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|
85 |
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/* date*/ |
86 |
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int jdate(int month, int day); |
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|
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|
89 |
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|
90 |
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|
91 |
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|
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/* sun calculation constants */ |
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extern double s_latitude; |
109 |
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extern double s_longitude; |
132 |
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|
133 |
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|
134 |
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/* definition of the sky conditions through the Perez parametrization */ |
135 |
< |
double skyclearness, skybrightness; |
135 |
> |
double skyclearness = 0; |
136 |
> |
double skybrightness = 0; |
137 |
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double solarradiance; /*radiance of the sun disk and of the circumsolar area*/ |
138 |
< |
double diffusilluminance, directilluminance, diffusirradiance, directirradiance; |
138 |
> |
double diffuseilluminance, directilluminance, diffuseirradiance, directirradiance; |
139 |
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double sunzenith, daynumber=150, atm_preci_water=2; |
140 |
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|
141 |
< |
double diffnormalization, dirnormalization; |
141 |
> |
double sunaltitude_border = 0; |
142 |
> |
double diffnormalization = 0; |
143 |
> |
double dirnormalization = 0; |
144 |
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double *c_perez; |
145 |
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|
146 |
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int output=0; /*define the unit of the output (sky luminance or radiance): visible watt=0, solar watt=1, lumen=2*/ |
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int input=0; /*define the input for the calulation*/ |
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|
149 |
+ |
int suppress_warnings=0; |
150 |
+ |
|
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/* default values */ |
152 |
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int cloudy = 0; /* 1=standard, 2=uniform */ |
153 |
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int dosun = 1; |
158 |
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|
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/* computed values */ |
160 |
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double sundir[3]; |
161 |
< |
double groundbr; |
161 |
> |
double groundbr = 0; |
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double F2; |
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double solarbr = 0.0; |
164 |
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int u_solar = 0; /* -1=irradiance, 1=radiance */ |
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char errmsg[128]; |
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< |
main(argc, argv) |
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int argc; |
152 |
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char *argv[]; |
170 |
> |
int main(int argc, char** argv) |
171 |
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{ |
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int i; |
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|
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progname = argv[0]; |
175 |
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if (argc == 2 && !strcmp(argv[1], "-defaults")) { |
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printdefaults(); |
177 |
< |
exit(0); |
177 |
> |
return 0; |
178 |
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} |
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if (argc < 4) |
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userror("arg count"); |
213 |
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case 't': |
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betaturbidity = atof(argv[++i]); |
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break; |
216 |
+ |
case 'w': |
217 |
+ |
suppress_warnings = 1; |
218 |
+ |
break; |
219 |
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case 'b': |
220 |
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zenithbr = atof(argv[++i]); |
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break; |
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case 'm': |
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s_meridian = atof(argv[++i]) * (M_PI/180); |
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break; |
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|
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|
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case 'O': |
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output = atof(argv[++i]); /*define the unit of the output of the program : |
237 |
< |
sky and sun luminance/radiance (0==W visible, 1==W solar radiation, 2==lm) |
218 |
< |
default is set to 0*/ |
237 |
> |
sky and sun luminance/radiance (0==W visible, 1==W solar radiation, 2==lm) */ |
238 |
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break; |
239 |
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|
240 |
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case 'P': |
246 |
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case 'W': /* direct normal Irradiance [W/m^2] */ |
247 |
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input = 1; /* diffuse horizontal Irrad. [W/m^2] */ |
248 |
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directirradiance = atof(argv[++i]); |
249 |
< |
diffusirradiance = atof(argv[++i]); |
249 |
> |
diffuseirradiance = atof(argv[++i]); |
250 |
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break; |
251 |
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|
252 |
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case 'L': /* direct normal Illuminance [Lux] */ |
253 |
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input = 2; /* diffuse horizontal Ill. [Lux] */ |
254 |
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directilluminance = atof(argv[++i]); |
255 |
< |
diffusilluminance = atof(argv[++i]); |
255 |
> |
diffuseilluminance = atof(argv[++i]); |
256 |
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break; |
257 |
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|
258 |
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case 'G': /* direct horizontal Irradiance [W/m^2] */ |
259 |
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input = 3; /* diffuse horizontal Irrad. [W/m^2] */ |
260 |
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directirradiance = atof(argv[++i]); |
261 |
< |
diffusirradiance = atof(argv[++i]); |
261 |
> |
diffuseirradiance = atof(argv[++i]); |
262 |
|
break; |
244 |
– |
|
263 |
|
|
264 |
+ |
case 'l': |
265 |
+ |
sunaltitude_border = atof(argv[++i]); |
266 |
+ |
break; |
267 |
+ |
|
268 |
+ |
|
269 |
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default: |
270 |
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sprintf(errmsg, "unknown option: %s", argv[i]); |
271 |
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userror(errmsg); |
280 |
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|
281 |
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|
282 |
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/* allocation dynamique de memoire pour les pointeurs */ |
283 |
< |
if ( (c_perez = malloc(5*sizeof(double))) == NULL ) |
283 |
> |
if ( (c_perez = calloc(5, sizeof(double))) == NULL ) |
284 |
|
{ |
285 |
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fprintf(stderr,"Out of memory error in function main !"); |
286 |
< |
exit(1); |
286 |
> |
return 1; |
287 |
|
} |
288 |
|
|
266 |
– |
|
289 |
|
printhead(argc, argv); |
290 |
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|
291 |
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computesky(); |
292 |
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printsky(); |
293 |
|
|
294 |
< |
exit(0); |
294 |
> |
return 0; |
295 |
|
} |
296 |
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|
297 |
|
|
298 |
< |
computesky() /* compute sky parameters */ |
298 |
> |
void computesky() /* compute sky parameters */ |
299 |
|
{ |
300 |
|
|
301 |
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/* new variables */ |
302 |
< |
int j, i; |
302 |
> |
int j; |
303 |
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float *lv_mod; /* 145 luminance values*/ |
304 |
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/* 145 directions for the calculation of the normalization coefficient, coefficient Perez model */ |
305 |
< |
float *theta_o, *phi_o, *coeff_perez; |
305 |
> |
float *theta_o, *phi_o; |
306 |
|
double dzeta, gamma; |
285 |
– |
double diffusion; |
307 |
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double normfactor; |
308 |
|
|
309 |
|
|
326 |
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daynumber = (double)jdate(month, day); |
327 |
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|
328 |
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} |
329 |
+ |
|
330 |
+ |
|
331 |
+ |
|
332 |
+ |
|
333 |
+ |
|
334 |
+ |
/* if loop for the -l option. 01/2013 Sprenger */ |
335 |
+ |
|
336 |
+ |
if (altitude*180/M_PI < sunaltitude_border) { |
337 |
+ |
|
338 |
+ |
if (suppress_warnings==0) |
339 |
+ |
fprintf(stderr, "Warning: sun altitude (%.3f degrees) below the border (%.3f degrees)\n",altitude*180/M_PI,sunaltitude_border); |
340 |
+ |
print_error_sky(); |
341 |
+ |
exit(0); |
342 |
+ |
} |
343 |
+ |
|
344 |
+ |
|
345 |
+ |
|
346 |
+ |
|
347 |
+ |
|
348 |
|
if (!cloudy && altitude > 87.*M_PI/180.) { |
349 |
< |
fprintf(stderr, |
349 |
> |
|
350 |
> |
if (suppress_warnings==0) { |
351 |
> |
fprintf(stderr, |
352 |
|
"%s: warning - sun too close to zenith, reducing altitude to 87 degrees\n", |
353 |
|
progname); |
354 |
< |
printf( |
313 |
< |
"# warning - sun too close to zenith, reducing altitude to 87 degrees\n"); |
354 |
> |
} |
355 |
|
altitude = 87.*M_PI/180.; |
356 |
|
} |
357 |
+ |
|
358 |
|
sundir[0] = -sin(azimuth)*cos(altitude); |
359 |
|
sundir[1] = -cos(azimuth)*cos(altitude); |
360 |
|
sundir[2] = sin(altitude); |
365 |
|
|
366 |
|
|
367 |
|
|
368 |
< |
/* compute the inputs for the calculation of the light distribution over the sky*/ |
368 |
> |
/* compute the inputs for the calculation of the light distribution over the sky*/ |
369 |
|
if (input==0) |
370 |
|
{ |
371 |
|
check_parametrization(); |
372 |
< |
diffusirradiance = diffus_irradiance_from_sky_brightness(); /*diffuse horizontal irradiance*/ |
372 |
> |
diffuseirradiance = diffuse_irradiance_from_sky_brightness(); /*diffuse horizontal irradiance*/ |
373 |
|
directirradiance = direct_irradiance_from_sky_clearness(); |
374 |
|
check_irradiances(); |
375 |
|
|
376 |
|
if (output==0 || output==2) |
377 |
|
{ |
378 |
< |
diffusilluminance = diffusirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
378 |
> |
diffuseilluminance = diffuseirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
379 |
|
directilluminance = directirradiance*direct_n_effi_PEREZ(); |
380 |
|
check_illuminances(); |
381 |
|
} |
391 |
|
|
392 |
|
if (output==0 || output==2) |
393 |
|
{ |
394 |
< |
diffusilluminance = diffusirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
394 |
> |
diffuseilluminance = diffuseirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
395 |
|
directilluminance = directirradiance*direct_n_effi_PEREZ(); |
396 |
|
check_illuminances(); |
397 |
|
} |
411 |
|
{ |
412 |
|
if (altitude<=0) |
413 |
|
{ |
414 |
< |
fprintf(stderr, "solar zenith angle larger than 90� \n the models used are not more valid\n"); |
415 |
< |
exit(1); |
414 |
> |
if (suppress_warnings==0) |
415 |
> |
fprintf(stderr, "Warning: solar zenith angle larger than 90 degrees; using zero irradiance to proceed\n"); |
416 |
> |
directirradiance = 0; |
417 |
> |
diffuseirradiance = 0; |
418 |
> |
} else { |
419 |
> |
directirradiance=directirradiance/sin(altitude); |
420 |
|
} |
375 |
– |
|
376 |
– |
directirradiance=directirradiance/sin(altitude); |
421 |
|
check_irradiances(); |
422 |
|
skybrightness = sky_brightness(); |
423 |
|
skyclearness = sky_clearness(); |
425 |
|
|
426 |
|
if (output==0 || output==2) |
427 |
|
{ |
428 |
< |
diffusilluminance = diffusirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
428 |
> |
diffuseilluminance = diffuseirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
429 |
|
directilluminance = directirradiance*direct_n_effi_PEREZ(); |
430 |
|
check_illuminances(); |
431 |
|
} |
437 |
|
|
438 |
|
|
439 |
|
|
440 |
< |
/* normalization factor for the relative sky luminance distribution, diffuse part*/ |
440 |
> |
/* normalization factor for the relative sky luminance distribution, diffuse part*/ |
441 |
|
|
398 |
– |
/* allocation dynamique de memoire pour les pointeurs */ |
399 |
– |
if ( (coeff_perez = malloc(8*20*sizeof(float))) == NULL ) |
400 |
– |
{ |
401 |
– |
fprintf(stderr,"Out of memory error in function main !"); |
402 |
– |
exit(1); |
403 |
– |
} |
404 |
– |
|
405 |
– |
/* read the coefficients for the Perez sky luminance model */ |
406 |
– |
if (lect_coeff_perez(DATFILE, &coeff_perez) > 0) |
407 |
– |
{ |
408 |
– |
fprintf(stderr,"lect_coeff_perez does not work\n"); |
409 |
– |
exit(2); |
410 |
– |
} |
411 |
– |
|
442 |
|
if ( (lv_mod = malloc(145*sizeof(float))) == NULL) |
443 |
|
{ |
444 |
|
fprintf(stderr,"Out of memory in function main"); |
446 |
|
} |
447 |
|
|
448 |
|
/* read the angles */ |
449 |
< |
theta_o = theta_ordered("defangle.dat"); |
450 |
< |
phi_o = phi_ordered("defangle.dat"); |
449 |
> |
theta_o = defangle_theta; |
450 |
> |
phi_o = defangle_phi; |
451 |
|
|
452 |
< |
/* parameters for the perez model */ |
452 |
> |
/* parameters for the perez model */ |
453 |
|
coeff_lum_perez(radians(sunzenith), skyclearness, skybrightness, coeff_perez); |
454 |
|
|
455 |
< |
/*calculation of the modelled luminance */ |
455 |
> |
/*calculation of the modelled luminance */ |
456 |
|
for (j=0;j<145;j++) |
457 |
|
{ |
458 |
|
theta_phi_to_dzeta_gamma(radians(*(theta_o+j)),radians(*(phi_o+j)),&dzeta,&gamma,radians(sunzenith)); |
459 |
|
*(lv_mod+j) = calc_rel_lum_perez(dzeta,gamma,radians(sunzenith),skyclearness,skybrightness,coeff_perez); |
460 |
< |
/*printf("theta, phi, lv_mod %lf\t %lf\t %lf\n", *(theta_o+j),*(phi_o+j),*(lv_mod+j));*/ |
460 |
> |
// printf("theta, phi, lv_mod %f\t %f\t %f\n", *(theta_o+j),*(phi_o+j),*(lv_mod+j)); |
461 |
|
} |
462 |
|
|
463 |
|
/* integration of luminance for the normalization factor, diffuse part of the sky*/ |
467 |
|
|
468 |
|
|
469 |
|
|
470 |
< |
/*normalization coefficient in lumen or in watt*/ |
470 |
> |
/*normalization coefficient in lumen or in watt*/ |
471 |
|
if (output==0) |
472 |
|
{ |
473 |
< |
diffnormalization = diffusilluminance/diffnormalization/WHTEFFICACY; |
473 |
> |
diffnormalization = diffuseilluminance/diffnormalization/WHTEFFICACY; |
474 |
|
} |
475 |
|
else if (output==1) |
476 |
|
{ |
477 |
< |
diffnormalization = diffusirradiance/diffnormalization; |
477 |
> |
diffnormalization = diffuseirradiance/diffnormalization; |
478 |
|
} |
479 |
|
else if (output==2) |
480 |
|
{ |
481 |
< |
diffnormalization = diffusilluminance/diffnormalization; |
481 |
> |
diffnormalization = diffuseilluminance/diffnormalization; |
482 |
|
} |
483 |
|
|
484 |
< |
else {fprintf(stderr,"output argument : wrong number"); exit(1);} |
484 |
> |
else {fprintf(stderr,"Wrong output specification.\n"); exit(1);} |
485 |
|
|
486 |
|
|
487 |
|
|
488 |
|
|
489 |
< |
/* calculation for the solar source */ |
489 |
> |
/* calculation for the solar source */ |
490 |
|
if (output==0) |
491 |
|
solarradiance = directilluminance/(2*M_PI*(1-cos(half_sun_angle*M_PI/180)))/WHTEFFICACY; |
492 |
|
|
502 |
|
/* Compute the ground radiance */ |
503 |
|
zenithbr=calc_rel_lum_perez(0.0,radians(sunzenith),radians(sunzenith),skyclearness,skybrightness,coeff_perez); |
504 |
|
zenithbr*=diffnormalization; |
505 |
< |
/* |
476 |
< |
fprintf(stderr, "gendaylit : the actual zenith radiance(W/m^2/sr) or luminance(cd/m^2) is : %.0lf\n", zenithbr); |
477 |
< |
*/ |
478 |
< |
|
505 |
> |
|
506 |
|
if (skyclearness==1) |
507 |
|
normfactor = 0.777778; |
508 |
|
|
520 |
|
} |
521 |
|
|
522 |
|
groundbr = zenithbr*normfactor; |
496 |
– |
printf("# Ground ambient level: %.1f\n", groundbr); |
523 |
|
|
524 |
|
if (dosun&&(skyclearness>1)) |
525 |
< |
groundbr += 6.8e-5/M_PI*solarradiance*sundir[2]; |
525 |
> |
groundbr += 6.8e-5/M_PI*solarradiance*sundir[2]; |
526 |
|
|
527 |
|
groundbr *= gprefl; |
528 |
|
|
534 |
|
|
535 |
|
|
536 |
|
|
537 |
+ |
void print_error_sky() |
538 |
+ |
{ |
539 |
+ |
sundir[0] = -sin(azimuth)*cos(altitude); |
540 |
+ |
sundir[1] = -cos(azimuth)*cos(altitude); |
541 |
+ |
sundir[2] = sin(altitude); |
542 |
+ |
|
543 |
+ |
printf("\nvoid brightfunc skyfunc\n"); |
544 |
+ |
printf("2 skybright perezlum.cal\n"); |
545 |
+ |
printf("0\n"); |
546 |
+ |
printf("10 0.00 0.00 0.000 0.000 0.000 0.000 0.000 %f %f %f \n", sundir[0], sundir[1], sundir[2]); |
547 |
+ |
} |
548 |
+ |
|
549 |
|
|
550 |
|
|
551 |
< |
|
514 |
< |
printsky() /* print out sky */ |
551 |
> |
void printsky() /* print out sky */ |
552 |
|
{ |
553 |
|
if (dosun&&(skyclearness>1)) |
554 |
< |
{ |
554 |
> |
{ |
555 |
|
printf("\nvoid light solar\n"); |
556 |
|
printf("0\n0\n"); |
557 |
|
printf("3 %.3e %.3e %.3e\n", solarradiance, solarradiance, solarradiance); |
558 |
|
printf("\nsolar source sun\n"); |
559 |
|
printf("0\n0\n"); |
560 |
|
printf("4 %f %f %f %f\n", sundir[0], sundir[1], sundir[2], 2*half_sun_angle); |
561 |
< |
} |
525 |
< |
|
526 |
< |
if (dosun&&(skyclearness==1)) |
527 |
< |
{ |
561 |
> |
} else if (dosun) { |
562 |
|
printf("\nvoid light solar\n"); |
563 |
|
printf("0\n0\n"); |
564 |
|
printf("3 0.0 0.0 0.0\n"); |
565 |
|
printf("\nsolar source sun\n"); |
566 |
|
printf("0\n0\n"); |
567 |
|
printf("4 %f %f %f %f\n", sundir[0], sundir[1], sundir[2], 2*half_sun_angle); |
568 |
< |
} |
568 |
> |
} |
569 |
|
|
536 |
– |
|
570 |
|
printf("\nvoid brightfunc skyfunc\n"); |
571 |
|
printf("2 skybright perezlum.cal\n"); |
572 |
|
printf("0\n"); |
573 |
|
printf("10 %.3e %.3e %lf %lf %lf %lf %lf %f %f %f \n", diffnormalization, groundbr, |
574 |
< |
*(c_perez+0),*(c_perez+1),*(c_perez+2),*(c_perez+3),*(c_perez+4), |
575 |
< |
sundir[0], sundir[1], sundir[2]); |
574 |
> |
*(c_perez+0),*(c_perez+1),*(c_perez+2),*(c_perez+3),*(c_perez+4), |
575 |
> |
sundir[0], sundir[1], sundir[2]); |
576 |
|
} |
577 |
|
|
578 |
|
|
579 |
< |
printdefaults() /* print default values */ |
579 |
> |
void printdefaults() /* print default values */ |
580 |
|
{ |
581 |
|
printf("-g %f\t\t\t# Ground plane reflectance\n", gprefl); |
582 |
|
if (zenithbr > 0.0) |
589 |
|
} |
590 |
|
|
591 |
|
|
592 |
< |
userror(msg) /* print usage error and quit */ |
560 |
< |
char *msg; |
592 |
> |
void userror(char* msg) /* print usage error and quit */ |
593 |
|
{ |
594 |
|
if (msg != NULL) |
595 |
|
fprintf(stderr, "%s: Use error - %s\n", progname, msg); |
596 |
< |
fprintf(stderr, "Usage: %s month day hour [-P|-W|-L] direct_value diffus_value [options]\n", progname); |
597 |
< |
fprintf(stderr, "or : %s -ang altitude azimuth [-P|-W|-L] direct_value diffus_value [options]\n", progname); |
596 |
> |
fprintf(stderr, "Usage: %s month day hour [-P|-W|-L|-G] direct_value diffuse_value [options]\n", progname); |
597 |
> |
fprintf(stderr, "or: %s -ang altitude azimuth [-P|-W|-L|-G] direct_value diffuse_value [options]\n", progname); |
598 |
|
fprintf(stderr, " -P epsilon delta (these are the Perez parameters) \n"); |
599 |
|
fprintf(stderr, " -W direct-normal-irradiance diffuse-horizontal-irradiance (W/m^2)\n"); |
600 |
|
fprintf(stderr, " -L direct-normal-illuminance diffuse-horizontal-illuminance (lux)\n"); |
601 |
|
fprintf(stderr, " -G direct-horizontal-irradiance diffuse-horizontal-irradiance (W/m^2)\n"); |
602 |
|
fprintf(stderr, " -O [0|1|2] (0=output in W/m^2/sr visible, 1=output in W/m^2/sr solar, 2=output in candela/m^2), default is 0 \n"); |
603 |
+ |
fprintf(stderr, " gendaylit version 2.00 (2013/01/28) \n"); |
604 |
|
exit(1); |
605 |
|
} |
606 |
|
|
607 |
|
|
608 |
|
|
609 |
< |
double |
577 |
< |
normsc() /* compute normalization factor (E0*F2/L0) */ |
609 |
> |
double normsc() /* compute normalization factor (E0*F2/L0) */ |
610 |
|
{ |
611 |
|
static double nfc[2][5] = { |
612 |
|
/* clear sky approx. */ |
629 |
|
|
630 |
|
|
631 |
|
|
632 |
< |
printhead(ac, av) /* print command header */ |
601 |
< |
register int ac; |
602 |
< |
register char **av; |
632 |
> |
void printhead(int ac, char** av) /* print command header */ |
633 |
|
{ |
634 |
|
putchar('#'); |
635 |
|
while (ac--) { |
642 |
|
|
643 |
|
|
644 |
|
|
615 |
– |
void |
616 |
– |
skip_comments(FILE *fp) /* skip comments in file */ |
617 |
– |
{ |
618 |
– |
int c; |
619 |
– |
|
620 |
– |
while ((c = getc(fp)) != EOF) |
621 |
– |
if (c == '#') { |
622 |
– |
while ((c = getc(fp)) != EOF) |
623 |
– |
if (c == '\n') |
624 |
– |
break; |
625 |
– |
} else if (!isspace(c)) { |
626 |
– |
ungetc(c, fp); |
627 |
– |
break; |
628 |
– |
} |
629 |
– |
} |
645 |
|
|
646 |
|
|
632 |
– |
|
647 |
|
/* Perez models */ |
648 |
|
|
649 |
|
/* Perez global horizontal luminous efficacy model */ |
655 |
|
int category_total_number, category_number, i; |
656 |
|
|
657 |
|
|
658 |
< |
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<=skybriginf || skybrightness>skybrigsup) |
659 |
< |
fprintf(stderr, "Warning : skyclearness or skybrightness out of range ; \n Check your input parameters\n"); |
658 |
> |
if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
659 |
> |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function glob_h_effi_PEREZ \n"); |
660 |
|
|
661 |
|
/* initialize category bounds (clearness index bounds) */ |
662 |
|
|
734 |
|
int category_total_number, category_number, i; |
735 |
|
|
736 |
|
|
737 |
< |
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<=skybriginf || skybrightness>skybrigsup) |
738 |
< |
fprintf(stderr, "Warning : skyclearness or skybrightness out of range ; \n Check your input parameters\n"); |
737 |
> |
if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
738 |
> |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function glob_h_diffuse_effi_PEREZ \n"); |
739 |
|
|
740 |
|
/* initialize category bounds (clearness index bounds) */ |
741 |
|
|
742 |
|
category_total_number = 8; |
743 |
|
|
744 |
+ |
//XXX: category_bounds > 0.1 |
745 |
|
category_bounds[1] = 1; |
746 |
|
category_bounds[2] = 1.065; |
747 |
|
category_bounds[3] = 1.230; |
793 |
|
|
794 |
|
|
795 |
|
|
796 |
+ |
category_number = -1; |
797 |
|
for (i=1; i<=category_total_number; i++) |
798 |
|
{ |
799 |
|
if ( (skyclearness >= category_bounds[i]) && (skyclearness < category_bounds[i+1]) ) |
800 |
|
category_number = i; |
801 |
|
} |
802 |
|
|
803 |
+ |
if (category_number == -1) { |
804 |
+ |
if (suppress_warnings==0) |
805 |
+ |
fprintf(stderr, "ERROR: Model parameters out of range\n"); |
806 |
+ |
print_error_sky(); |
807 |
+ |
exit(1); |
808 |
+ |
} |
809 |
+ |
|
810 |
+ |
|
811 |
|
value = a[category_number] + b[category_number]*atm_preci_water + c[category_number]*cos(sunzenith*M_PI/180) + |
812 |
|
d[category_number]*log(skybrightness); |
813 |
|
|
825 |
|
int category_total_number, category_number, i; |
826 |
|
|
827 |
|
|
828 |
< |
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<=skybriginf || skybrightness>skybrigsup) |
829 |
< |
fprintf(stderr, "Warning : skyclearness or skybrightness out of range ; \n Check your input parameters\n"); |
828 |
> |
if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
829 |
> |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function direct_n_effi_PEREZ \n"); |
830 |
|
|
831 |
|
|
832 |
|
/* initialize category bounds (clearness index bounds) */ |
900 |
|
/*check the range of epsilon and delta indexes of the perez parametrization*/ |
901 |
|
void check_parametrization() |
902 |
|
{ |
903 |
< |
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<=skybriginf || skybrightness>skybrigsup) |
903 |
> |
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) |
904 |
|
{ |
905 |
< |
fprintf(stderr,"sky clearness or sky brightness out of range %lf\t %lf\n", skyclearness, skybrightness); |
906 |
< |
exit(1); |
905 |
> |
|
906 |
> |
/* limit sky clearness or sky brightness, 2009 11 13 by J. Wienold */ |
907 |
> |
if (skyclearness<skyclearinf){ |
908 |
> |
skyclearness=skyclearinf; |
909 |
> |
if (suppress_warnings==0) |
910 |
> |
fprintf(stderr,"Range warning: sky clearness too low (%lf)\n", skyclearness); |
911 |
|
} |
912 |
+ |
if (skyclearness>skyclearsup){ |
913 |
+ |
skyclearness=skyclearsup-0.1; |
914 |
+ |
if (suppress_warnings==0) |
915 |
+ |
fprintf(stderr,"Range warning: sky clearness too high (%lf)\n", skyclearness); |
916 |
+ |
} |
917 |
+ |
if (skybrightness<skybriginf){ |
918 |
+ |
skybrightness=skybriginf; |
919 |
+ |
if (suppress_warnings==0) |
920 |
+ |
fprintf(stderr,"Range warning: sky brightness too low (%lf)\n", skybrightness); |
921 |
+ |
} |
922 |
+ |
if (skybrightness>skybrigsup){ |
923 |
+ |
skybrightness=skybrigsup; |
924 |
+ |
if (suppress_warnings==0) |
925 |
+ |
fprintf(stderr,"Range warning: sky brightness too high (%lf)\n", skybrightness); |
926 |
+ |
} |
927 |
+ |
|
928 |
+ |
return; } |
929 |
|
else return; |
930 |
|
} |
931 |
|
|
932 |
|
|
933 |
< |
/* likelihood of the direct and diffuse components */ |
933 |
> |
/* validity of the direct and diffuse components */ |
934 |
|
void check_illuminances() |
935 |
|
{ |
936 |
< |
if (!( (directilluminance>=0) && (directilluminance<=solar_constant_l*1000) && (diffusilluminance>0) )) |
937 |
< |
{ |
938 |
< |
fprintf(stderr,"direct or diffuse illuminances out of range\n"); |
894 |
< |
exit(1); |
936 |
> |
if (directilluminance < 0) { |
937 |
> |
fprintf(stderr,"WARNING: direct illuminance < 0. Using 0.0\n"); |
938 |
> |
directilluminance = 0.0; |
939 |
|
} |
940 |
< |
return; |
940 |
> |
if (diffuseilluminance < 0) { |
941 |
> |
fprintf(stderr,"WARNING: diffuse illuminance < 0. Using 0.0\n"); |
942 |
> |
diffuseilluminance = 0.0; |
943 |
> |
} |
944 |
> |
if (directilluminance > solar_constant_l*1000.0) { |
945 |
> |
fprintf(stderr,"ERROR: direct illuminance exceeds solar constant\n"); |
946 |
> |
exit(1); |
947 |
> |
} |
948 |
|
} |
949 |
|
|
950 |
|
|
951 |
|
void check_irradiances() |
952 |
|
{ |
953 |
< |
if (!( (directirradiance>=0) && (directirradiance<=solar_constant_e) && (diffusirradiance>0) )) |
954 |
< |
{ |
955 |
< |
fprintf(stderr,"direct or diffuse irradiances out of range\n"); |
956 |
< |
exit(1); |
957 |
< |
} |
958 |
< |
return; |
953 |
> |
if (directirradiance < 0) { |
954 |
> |
fprintf(stderr,"WARNING: direct irradiance < 0. Using 0.0\n"); |
955 |
> |
directirradiance = 0.0; |
956 |
> |
} |
957 |
> |
if (diffuseirradiance < 0) { |
958 |
> |
fprintf(stderr,"WARNING: diffuse irradiance < 0. Using 0.0\n"); |
959 |
> |
diffuseirradiance = 0.0; |
960 |
> |
} |
961 |
> |
if (directirradiance > solar_constant_e) { |
962 |
> |
fprintf(stderr,"ERROR: direct irradiance exceeds solar constant\n"); |
963 |
> |
exit(1); |
964 |
> |
} |
965 |
|
} |
966 |
|
|
967 |
|
|
971 |
|
{ |
972 |
|
double value; |
973 |
|
|
974 |
< |
value = diffusirradiance * air_mass() / ( solar_constant_e*get_eccentricity()); |
974 |
> |
value = diffuseirradiance * air_mass() / ( solar_constant_e*get_eccentricity()); |
975 |
|
|
976 |
|
return(value); |
977 |
|
} |
980 |
|
/* Perez sky's clearness */ |
981 |
|
double sky_clearness() |
982 |
|
{ |
983 |
< |
double value; |
983 |
> |
double value; |
984 |
|
|
985 |
< |
value = ( (diffusirradiance + directirradiance)/(diffusirradiance) + 1.041*sunzenith*M_PI/180*sunzenith*M_PI/180*sunzenith*M_PI/180 ) / (1 + 1.041*sunzenith*M_PI/180*sunzenith*M_PI/180*sunzenith*M_PI/180) ; |
985 |
> |
value = ( (diffuseirradiance + directirradiance)/(diffuseirradiance) + 1.041*sunzenith*M_PI/180*sunzenith*M_PI/180*sunzenith*M_PI/180 ) / (1 + 1.041*sunzenith*M_PI/180*sunzenith*M_PI/180*sunzenith*M_PI/180) ; |
986 |
|
|
987 |
< |
return(value); |
987 |
> |
return(value); |
988 |
|
} |
989 |
|
|
990 |
|
|
991 |
|
|
992 |
|
/* diffus horizontal irradiance from Perez sky's brightness */ |
993 |
< |
double diffus_irradiance_from_sky_brightness() |
993 |
> |
double diffuse_irradiance_from_sky_brightness() |
994 |
|
{ |
995 |
|
double value; |
996 |
|
|
1005 |
|
{ |
1006 |
|
double value; |
1007 |
|
|
1008 |
< |
value = diffus_irradiance_from_sky_brightness(); |
1008 |
> |
value = diffuse_irradiance_from_sky_brightness(); |
1009 |
|
value = value * ( (skyclearness-1) * (1+1.041*sunzenith*M_PI/180*sunzenith*M_PI/180*sunzenith*M_PI/180) ); |
1010 |
|
|
1011 |
|
return(value); |
1012 |
|
} |
1013 |
|
|
1014 |
|
|
1015 |
< |
void illu_to_irra_index(void) |
1015 |
> |
void illu_to_irra_index() |
1016 |
|
{ |
1017 |
< |
double test1=0.1, test2=0.1; |
1017 |
> |
double test1=0.1, test2=0.1, d_eff; |
1018 |
|
int counter=0; |
1019 |
|
|
1020 |
< |
diffusirradiance = diffusilluminance*solar_constant_e/(solar_constant_l*1000); |
1020 |
> |
diffuseirradiance = diffuseilluminance*solar_constant_e/(solar_constant_l*1000); |
1021 |
|
directirradiance = directilluminance*solar_constant_e/(solar_constant_l*1000); |
1022 |
|
skyclearness = sky_clearness(); |
1023 |
|
skybrightness = sky_brightness(); |
1024 |
< |
if (skyclearness>12) skyclearness=12; |
968 |
< |
if (skybrightness<0.05) skybrightness=0.01; |
1024 |
> |
check_parametrization(); |
1025 |
|
|
1026 |
< |
|
971 |
< |
while ( ((fabs(diffusirradiance-test1)>10) || (fabs(directirradiance-test2)>10) |
1026 |
> |
while ( ((fabs(diffuseirradiance-test1)>10) || (fabs(directirradiance-test2)>10) |
1027 |
|
|| skyclearness>skyclearinf || skyclearness<skyclearsup |
1028 |
|
|| skybrightness>skybriginf || skybrightness<skybrigsup ) |
1029 |
|
&& !(counter==5) ) |
1030 |
|
{ |
976 |
– |
/*fprintf(stderr, "conversion illuminance into irradiance %lf\t %lf\n", diffusirradiance, directirradiance);*/ |
1031 |
|
|
1032 |
< |
test1=diffusirradiance; |
1032 |
> |
test1=diffuseirradiance; |
1033 |
|
test2=directirradiance; |
1034 |
|
counter++; |
1035 |
|
|
1036 |
< |
diffusirradiance = diffusilluminance/glob_h_diffuse_effi_PEREZ(); |
1037 |
< |
directirradiance = directilluminance/direct_n_effi_PEREZ(); |
1038 |
< |
/*fprintf(stderr, "conversion illuminance into irradiance %lf\t %lf\n", diffusirradiance, directirradiance);*/ |
1036 |
> |
diffuseirradiance = diffuseilluminance/glob_h_diffuse_effi_PEREZ(); |
1037 |
> |
d_eff = direct_n_effi_PEREZ(); |
1038 |
> |
if (d_eff < 0.1) |
1039 |
> |
directirradiance = 0; |
1040 |
> |
else |
1041 |
> |
directirradiance = directilluminance/d_eff; |
1042 |
|
|
1043 |
|
skybrightness = sky_brightness(); |
1044 |
|
skyclearness = sky_clearness(); |
1045 |
< |
if (skyclearness>12) skyclearness=12; |
1046 |
< |
if (skybrightness<0.05) skybrightness=0.01; |
990 |
< |
|
991 |
< |
/*fprintf(stderr, "%lf\t %lf\n", skybrightness, skyclearness);*/ |
992 |
< |
|
1045 |
> |
check_parametrization(); |
1046 |
> |
|
1047 |
|
} |
1048 |
|
|
1049 |
|
|
1050 |
|
return; |
1051 |
|
} |
1052 |
|
|
1053 |
< |
|
1000 |
< |
int lect_coeff_perez(char *filename,float **coeff_perez) |
1053 |
> |
static int get_numlin(float epsilon) |
1054 |
|
{ |
1055 |
< |
FILE *fcoeff_perez; |
1056 |
< |
float temp; |
1057 |
< |
int i,j; |
1058 |
< |
|
1059 |
< |
if ((fcoeff_perez = frlibopen(filename)) == NULL) |
1060 |
< |
{ |
1061 |
< |
fprintf(stderr,"file %s cannot be opened\n", filename); |
1062 |
< |
return 1; /* il y a un probleme de fichier */ |
1063 |
< |
} |
1064 |
< |
else |
1065 |
< |
{ |
1066 |
< |
/*printf("file %s open\n", filename);*/ |
1067 |
< |
} |
1068 |
< |
|
1069 |
< |
skip_comments(fcoeff_perez); |
1017 |
< |
|
1018 |
< |
for (i=0;i<8;i++) |
1019 |
< |
for (j=0;j<20;j++) |
1020 |
< |
{ |
1021 |
< |
fscanf(fcoeff_perez,"%f",&temp); |
1022 |
< |
*(*coeff_perez+i*20+j) = temp; |
1023 |
< |
} |
1024 |
< |
fclose(fcoeff_perez); |
1025 |
< |
|
1026 |
< |
return 0; /* tout est OK */ |
1055 |
> |
if (epsilon < 1.065) |
1056 |
> |
return 0; |
1057 |
> |
else if (epsilon < 1.230) |
1058 |
> |
return 1; |
1059 |
> |
else if (epsilon < 1.500) |
1060 |
> |
return 2; |
1061 |
> |
else if (epsilon < 1.950) |
1062 |
> |
return 3; |
1063 |
> |
else if (epsilon < 2.800) |
1064 |
> |
return 4; |
1065 |
> |
else if (epsilon < 4.500) |
1066 |
> |
return 5; |
1067 |
> |
else if (epsilon < 6.200) |
1068 |
> |
return 6; |
1069 |
> |
return 7; |
1070 |
|
} |
1071 |
|
|
1029 |
– |
|
1030 |
– |
|
1072 |
|
/* sky luminance perez model */ |
1073 |
< |
double calc_rel_lum_perez(double dzeta,double gamma,double Z, |
1033 |
< |
double epsilon,double Delta,float *coeff_perez) |
1073 |
> |
double calc_rel_lum_perez(double dzeta,double gamma,double Z,double epsilon,double Delta,float coeff_perez[]) |
1074 |
|
{ |
1075 |
|
float x[5][4]; |
1076 |
|
int i,j,num_lin; |
1078 |
|
|
1079 |
|
if ( (epsilon < skyclearinf) || (epsilon >= skyclearsup) ) |
1080 |
|
{ |
1081 |
< |
fprintf(stderr,"Epsilon out of range in function calc_rel_lum_perez !\n"); |
1081 |
> |
fprintf(stderr,"Epsilon out of range in function calc_rel_lum_perez!\n"); |
1082 |
|
exit(1); |
1083 |
|
} |
1084 |
|
|
1088 |
|
if ( Delta < 0.2 ) Delta = 0.2; |
1089 |
|
} |
1090 |
|
|
1091 |
< |
if ( (epsilon >= 1.000) && (epsilon < 1.065) ) num_lin = 0; |
1052 |
< |
if ( (epsilon >= 1.065) && (epsilon < 1.230) ) num_lin = 1; |
1053 |
< |
if ( (epsilon >= 1.230) && (epsilon < 1.500) ) num_lin = 2; |
1054 |
< |
if ( (epsilon >= 1.500) && (epsilon < 1.950) ) num_lin = 3; |
1055 |
< |
if ( (epsilon >= 1.950) && (epsilon < 2.800) ) num_lin = 4; |
1056 |
< |
if ( (epsilon >= 2.800) && (epsilon < 4.500) ) num_lin = 5; |
1057 |
< |
if ( (epsilon >= 4.500) && (epsilon < 6.200) ) num_lin = 6; |
1058 |
< |
if ( (epsilon >= 6.200) && (epsilon < 14.00) ) num_lin = 7; |
1091 |
> |
num_lin = get_numlin(epsilon); |
1092 |
|
|
1093 |
|
for (i=0;i<5;i++) |
1094 |
|
for (j=0;j<4;j++) |
1121 |
|
|
1122 |
|
|
1123 |
|
/* coefficients for the sky luminance perez model */ |
1124 |
< |
void coeff_lum_perez(double Z, double epsilon, double Delta, float *coeff_perez) |
1124 |
> |
void coeff_lum_perez(double Z, double epsilon, double Delta, float coeff_perez[]) |
1125 |
|
{ |
1126 |
|
float x[5][4]; |
1127 |
|
int i,j,num_lin; |
1138 |
|
if ( Delta < 0.2 ) Delta = 0.2; |
1139 |
|
} |
1140 |
|
|
1141 |
< |
if ( (epsilon >= 1.000) && (epsilon < 1.065) ) num_lin = 0; |
1109 |
< |
if ( (epsilon >= 1.065) && (epsilon < 1.230) ) num_lin = 1; |
1110 |
< |
if ( (epsilon >= 1.230) && (epsilon < 1.500) ) num_lin = 2; |
1111 |
< |
if ( (epsilon >= 1.500) && (epsilon < 1.950) ) num_lin = 3; |
1112 |
< |
if ( (epsilon >= 1.950) && (epsilon < 2.800) ) num_lin = 4; |
1113 |
< |
if ( (epsilon >= 2.800) && (epsilon < 4.500) ) num_lin = 5; |
1114 |
< |
if ( (epsilon >= 4.500) && (epsilon < 6.200) ) num_lin = 6; |
1115 |
< |
if ( (epsilon >= 6.200) && (epsilon < 14.00) ) num_lin = 7; |
1141 |
> |
num_lin = get_numlin(epsilon); |
1142 |
|
|
1143 |
+ |
//fprintf(stderr,"numlin %d\n", num_lin); |
1144 |
+ |
|
1145 |
|
for (i=0;i<5;i++) |
1146 |
|
for (j=0;j<4;j++) |
1147 |
|
{ |
1200 |
|
} |
1201 |
|
|
1202 |
|
|
1175 |
– |
/********************************************************************************/ |
1176 |
– |
/* Fonction: theta_ordered */ |
1177 |
– |
/* */ |
1178 |
– |
/* In: char *filename */ |
1179 |
– |
/* */ |
1180 |
– |
/* Out: float * */ |
1181 |
– |
/* */ |
1182 |
– |
/* Update: 29/08/93 */ |
1183 |
– |
/* */ |
1184 |
– |
/* Rem: theta en degres */ |
1185 |
– |
/* */ |
1186 |
– |
/* But: fournit les valeurs de theta du fichier d'entree a la memoire */ |
1187 |
– |
/* */ |
1188 |
– |
/********************************************************************************/ |
1189 |
– |
float *theta_ordered(char *filename) |
1190 |
– |
{ |
1191 |
– |
int i; |
1192 |
– |
float buffer,*ptr; |
1193 |
– |
FILE *file_in; |
1203 |
|
|
1195 |
– |
if ( (file_in = frlibopen(filename)) == NULL ) |
1196 |
– |
{ |
1197 |
– |
fprintf(stderr,"Cannot open file %s in function theta_ordered\n",filename); |
1198 |
– |
exit(1); |
1199 |
– |
} |
1200 |
– |
|
1201 |
– |
skip_comments(file_in); |
1202 |
– |
|
1203 |
– |
if ( (ptr = malloc(145*sizeof(float))) == NULL ) |
1204 |
– |
{ |
1205 |
– |
fprintf(stderr,"Out of memory in function theta_ordered\n"); |
1206 |
– |
exit(1); |
1207 |
– |
} |
1208 |
– |
|
1209 |
– |
for (i=0;i<145;i++) |
1210 |
– |
{ |
1211 |
– |
fscanf(file_in,"%f",&buffer); |
1212 |
– |
*(ptr+i) = buffer; |
1213 |
– |
fscanf(file_in,"%f",&buffer); |
1214 |
– |
} |
1215 |
– |
|
1216 |
– |
fclose(file_in); |
1217 |
– |
return ptr; |
1218 |
– |
} |
1219 |
– |
|
1220 |
– |
|
1204 |
|
/********************************************************************************/ |
1222 |
– |
/* Fonction: phi_ordered */ |
1223 |
– |
/* */ |
1224 |
– |
/* In: char *filename */ |
1225 |
– |
/* */ |
1226 |
– |
/* Out: float * */ |
1227 |
– |
/* */ |
1228 |
– |
/* Update: 29/08/93 */ |
1229 |
– |
/* */ |
1230 |
– |
/* Rem: valeurs de Phi en DEGRES */ |
1231 |
– |
/* */ |
1232 |
– |
/* But: mettre les angles contenus dans le fichier d'entree dans la memoire */ |
1233 |
– |
/* */ |
1234 |
– |
/********************************************************************************/ |
1235 |
– |
float *phi_ordered(char *filename) |
1236 |
– |
{ |
1237 |
– |
int i; |
1238 |
– |
float buffer,*ptr; |
1239 |
– |
FILE *file_in; |
1240 |
– |
|
1241 |
– |
if ( (file_in = frlibopen(filename)) == NULL ) |
1242 |
– |
{ |
1243 |
– |
fprintf(stderr,"Cannot open file %s in function phi_ordered\n",filename); |
1244 |
– |
exit(1); |
1245 |
– |
} |
1246 |
– |
|
1247 |
– |
skip_comments(file_in); |
1248 |
– |
|
1249 |
– |
if ( (ptr = malloc(145*sizeof(float))) == NULL ) |
1250 |
– |
{ |
1251 |
– |
fprintf(stderr,"Out of memory in function phi_ordered"); |
1252 |
– |
exit(1); |
1253 |
– |
} |
1254 |
– |
|
1255 |
– |
for (i=0;i<145;i++) |
1256 |
– |
{ |
1257 |
– |
fscanf(file_in,"%f",&buffer); |
1258 |
– |
fscanf(file_in,"%f",&buffer); |
1259 |
– |
*(ptr+i) = buffer; |
1260 |
– |
} |
1261 |
– |
|
1262 |
– |
fclose(file_in); |
1263 |
– |
return ptr; |
1264 |
– |
} |
1265 |
– |
|
1266 |
– |
|
1267 |
– |
/********************************************************************************/ |
1205 |
|
/* Fonction: integ_lv */ |
1206 |
|
/* */ |
1207 |
|
/* In: float *lv,*theta */ |
1256 |
|
|
1257 |
|
if (sunzenith>90) |
1258 |
|
{ |
1259 |
< |
fprintf(stderr, "solar zenith angle larger than 90� in fuction air_mass():\n the models used are not more valid\n"); |
1259 |
> |
fprintf(stderr, "Solar zenith angle larger than 90 degrees in function air_mass()\n"); |
1260 |
|
exit(1); |
1261 |
|
} |
1262 |
|
|
1263 |
|
m = 1/( cos(sunzenith*M_PI/180)+0.15*exp( log(93.885-sunzenith)*(-1.253) ) ); |
1264 |
|
return(m); |
1265 |
|
} |
1329 |
– |
|
1330 |
– |
|
1331 |
– |
double get_angle_sun_direction(double sun_zenith, double sun_azimut, double direction_zenith, double direction_azimut) |
1332 |
– |
|
1333 |
– |
{ |
1334 |
– |
|
1335 |
– |
double angle; |
1336 |
– |
|
1337 |
– |
|
1338 |
– |
if (sun_zenith == 0) |
1339 |
– |
puts("WARNING: zenith_angle = 0 in function get_angle_sun_vert_plan"); |
1340 |
– |
|
1341 |
– |
angle = acos( cos(sun_zenith*M_PI/180)*cos(direction_zenith*M_PI/180) + sin(sun_zenith*M_PI/180)*sin(direction_zenith*M_PI/180)*cos((sun_azimut-direction_azimut)*M_PI/180) ); |
1342 |
– |
angle = angle*180/M_PI; |
1343 |
– |
return(angle); |
1344 |
– |
} |
1345 |
– |
|
1346 |
– |
|
1347 |
– |
|
1348 |
– |
|
1349 |
– |
|
1266 |
|
|
1267 |
|
|
1268 |
|
|