Diffstat (limited to 'core/settings/citytime/sun.h') (more/less context) (ignore whitespace changes)
-rw-r--r-- | core/settings/citytime/sun.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/core/settings/citytime/sun.h b/core/settings/citytime/sun.h new file mode 100644 index 0000000..2091621 --- a/dev/null +++ b/core/settings/citytime/sun.h @@ -0,0 +1,57 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +/* + * Sun clock definitions. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <time.h> + +#ifndef PI +#define PI 3.14159265358979323846 +#endif + +#ifndef E +#define E 2.7182818284590452354 +#endif + +#define abs(x) ((x) < 0 ? (-(x)) : x) /* Absolute value */ +#define sgn(x) (((x) < 0) ? -1 : ((x) > 0 ? 1 : 0)) /* Extract sign */ +#define dtr(x) ((x) * (PI / 180.0)) /* Degree->Radian */ +#define rtd(x) ((x) / (PI / 180.0)) /* Radian->Degree */ +#define fixangle(a) ((a) - 360.0 * (qFloor((a) / 360.0))) /* Fix angle */ + +#define TERMINC 100 /* Circle segments for terminator */ + +#define PROJINT (60 * 10) /* Frequency of seasonal recalculation */ + + +#ifdef __cplusplus +extern "C" { +#endif +double jtime(struct tm *t); +double kepler(double m, double ecc); +void sunpos(double jd, int apparent, double *ra, double *dec, double *rv, double *slong); +void projillum(short *wtab, int xdots, int ydots, double dec); +#ifdef __cplusplus +}; +#endif |