From 2d4a7321471115bc04687296811687c8797a54b6 Mon Sep 17 00:00:00 2001 From: Robert Tari Date: Thu, 12 Jan 2023 00:06:52 +0100 Subject: src/solar.*: Add solar elevation calculation from Redshift --- src/solar.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/solar.h (limited to 'src/solar.h') diff --git a/src/solar.h b/src/solar.h new file mode 100644 index 0000000..b1faed9 --- /dev/null +++ b/src/solar.h @@ -0,0 +1,32 @@ +/* + * Parts of this file have been taken from the Redshift project: + * https://github.com/jonls/redshift/ + * + * Copyright 2010 Jon Lund Steffensen + * Copyright 2023 Robert Tari + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program. If not, see . + * + * Authors: + * Jon Lund Steffensen + * Robert Tari + */ + +#ifndef REDSHIFT_SOLAR_H +#define REDSHIFT_SOLAR_H + +#define SOLAR_CIVIL_TWILIGHT_ELEV -6.0 + +double solar_elevation(double date, double lat, double lon); + +#endif /* ! REDSHIFT_SOLAR_H */ -- cgit v1.2.3