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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* gensky.c - program to generate sky functions. |
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* Our zenith is along the Z-axis, the X-axis |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <math.h> |
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#include <ctype.h> |
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#include "color.h" |
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extern char *strcpy(), *strcat(), *malloc(); |
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extern double stadj(), sdec(), sazi(), salt(), tz2mer(); |
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#ifndef PI |
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#define S_UNIF 3 |
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#define S_INTER 4 |
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#define overcast (skytype==S_OVER|skytype==S_UNIF) |
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#define overcast ((skytype==S_OVER)|(skytype==S_UNIF)) |
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double normsc(); |
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/* sun calculation constants */ |
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"AST", 60, "ADT", 45, |
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"NST", 52.5, "NDT", 37.5, |
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"GMT", 0, "BST", -15, |
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"WET", -15, "WETDST", -30, |
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"MET", -30, "METDST", -45, |
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"MEZ", -30, "MESZ", -45, |
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"CET", -15, "CEST", -30, |
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"EET", -30, "EEST", -45, |
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"AST", -45, "ADT", -60, |
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"GST", -60, "GDT", -75, |
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"IST", -82.5, "IDT", -97.5, |
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"JST", -135, "NDT", -150, |
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"NZST", -180, "NZDT", -195, |
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"", 0 |
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}; |
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/* required values */ |
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register char *cp = hs; |
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register int i, j; |
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if (tsolar = *cp == '+') cp++; /* solar time? */ |
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if ( (tsolar = *cp == '+') ) cp++; /* solar time? */ |
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while (isdigit(*cp)) cp++; |
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if (*cp == ':') |
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hour = atoi(hs) + atoi(++cp)/60.0; |
