<?xml version="1.0" ?> <!-- This file is part of FlightGear, the free flight simulator http://www.flightgear.org/ Copyright (C) 2012 Torsten Dreyer, Torsten (at) t3r _dot_ de 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; either version 2 of the License, or (at your option) any later version. 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 General Public License for more details. --> <!-- Compute local weather related properties --> <PropertyList> <!-- (pi/2 - /sim/time/sun-angle-rad) / 0.017451 * 110000.0 --> <filter> <name>LocalWeather:terminator-relative-position</name> <input> <expression> <difference> <value>1.57079632675</value> <property>/sim/time/sun-angle-rad</property> </difference> </expression> </input> <output>/environment/terminator-relative-position-m</output> <type>gain</type> <gain>6303363.70409</gain> </filter> </PropertyList>