837 lines
24 KiB
XML
837 lines
24 KiB
XML
<?xml version="1.0" ?>
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<!--
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This file is part of FlightGear, the free flight simulator
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http://www.flightgear.org/
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Copyright (C) 2012 Torsten Dreyer, Torsten (at) t3r _dot_ de
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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-->
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<!--
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Compute Atmospheric Light Shading related properties
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-->
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<PropertyList>
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<!-- (pi/2 - /sim/time/sun-angle-rad) / 0.017451 * 110000.0 -->
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<filter>
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<name>LocalWeather:terminator-relative-position</name>
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<input>
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<expression>
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<difference>
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<value>1.57079632675</value>
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<property>/sim/time/sun-angle-rad</property>
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</difference>
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</expression>
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</input>
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<output>/environment/terminator-relative-position-m</output>
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<type>gain</type>
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<gain>6303363.70409</gain>
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</filter>
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<filter>
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<name>LocalWeather:eye-altitude</name>
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<input>
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<property>/position/altitude-ft</property>
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</input>
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<output>/sim/rendering/eye-altitude-m</output>
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<type>gain</type>
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<gain>0.30480</gain>
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</filter>
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<!-- Properties used by the atmospheric scattering shader, when not being set directly
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by Advanced Weather -->
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<filter>
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<!-- Ground visibility. Same as lowest boundary layer. -->
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<name>EnvironmentInterpolator:AtmosphericShader:ground-visibility-m</name>
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<type>gain</type>
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<enable>
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<condition>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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</condition>
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</enable>
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<input>/environment/config/boundary/entry[0]/visibility-m</input>
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<output>/environment/ground-visibility-m</output>
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</filter>
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<filter>
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<!-- Ground haze level - assumed to be up to the lowest cloud layer. -->
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<name>EnvironmentInterpolator:AtmosphericShader:GroundHazeThickness</name>
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<type>gain</type>
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<enable>
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<condition>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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</condition>
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</enable>
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<input>
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<expression>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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<property>/environment/clouds/layer[0]/thickness-ft</property>
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</sum>
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</expression>
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</input>
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<gain>
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<!-- feet to meters -->
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<value>0.3048</value>
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</gain>
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<u_min>
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<value>0</value>
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</u_min>
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<u_max>
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<!-- haze maxes out at 6000ft. Could probably do something using lapse rates instead -->
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<value>2000</value>
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</u_max>
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<output>/environment/ground-haze-thickness-m</output>
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</filter>
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<!-- Build up the ground level scattering from 1 for clear skies to 0.6 for overcast -->
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:GroundScattering:0:Clear</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<equals>
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<property>/environment/clouds/layer[0]/coverage</property>
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<value>clear</value>
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</equals>
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</and>
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</condition>
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</enable>
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<input>
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<value>1</value>
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</input>
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<output>/environment/surface/ground-scattering</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:GroundScattering:0:Few</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<equals>
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<property>/environment/clouds/layer[0]/coverage</property>
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<value>few</value>
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</equals>
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</and>
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</condition>
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</enable>
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<input>
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<value>0.9</value>
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</input>
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<output>/environment/surface/ground-scattering</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:GroundScattering:0:Scattered</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<equals>
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<property>/environment/clouds/layer[0]/coverage</property>
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<value>scattered</value>
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</equals>
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</and>
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</condition>
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</enable>
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<input>
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<value>0.8</value>
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</input>
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<output>/environment/surface/ground-scattering</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:GroundScattering:0:Broken</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<equals>
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<property>/environment/clouds/layer[0]/coverage</property>
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<value>broken</value>
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</equals>
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</and>
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</condition>
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</enable>
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<input>
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<value>0.7</value>
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</input>
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<output>/environment/surface/ground-scattering</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:GroundScattering:0:Overcast</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<equals>
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<property>/environment/clouds/layer[0]/coverage</property>
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<value>overcast</value>
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</equals>
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</and>
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</condition>
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</enable>
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<input>
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<value>0.6</value>
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</input>
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<output>/environment/surface/ground-scattering</output>
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</filter>
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<!-- TODO: Handle layers beyond the first -->
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<!-- Set the scattering at the aircraft level -->
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Scattering:AircraftAboveLayer</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<greater-than>
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<property>/position/altitude-ft</property>
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<expression>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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<property>/environment/clouds/layer[0]/thickness-ft</property>
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</sum>
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</expression>
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</greater-than>
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</and>
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</condition>
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</enable>
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<input>
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<value>1</value>
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</input>
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<output>/rendering/scene/scattering</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Scattering:AircraftBelowLayer</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<less-than-equals>
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<property>/position/altitude-ft</property>
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<expression>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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<property>/environment/clouds/layer[0]/thickness-ft</property>
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</sum>
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</expression>
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</less-than-equals>
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</and>
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</condition>
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</enable>
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<input>/environment/surface/ground-scattering</input>
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<output>/rendering/scene/scattering</output>
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</filter>
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<!-- Clouds self-shading -->
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:CloudSelfShading</name>
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<type>gain</type>
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<enable>
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<condition>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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</condition>
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</enable>
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<input>
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<!-- TODO : Make this sun-angle dependent -->
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<value>1.0</value>
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</input>
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<output>/environment/cloud-self-shading</output>
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</filter>
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<!-- Skydome parameters - /sim/rendering/[mie|rayleigh|dome-density] -->
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:VisFactor</name>
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<type>gain</type>
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<enable>
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<condition>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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</condition>
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</enable>
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<input>
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<expression>
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<product>
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<difference>
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<property>/environment/visibility-m</property>
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<value>30000</value>
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</difference>
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<value>0.000011111</value>
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</product>
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</expression>
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</input>
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<u_min>0.0</u_min>
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<u_max>1.0</u_max>
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<output>/sim/rendering/skydome-vis-factor</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Rayleigh:Low</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<less-than>
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<property>/position/altitude-ft</property>
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<value>36000</value>
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</less-than>
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</and>
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</condition>
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</enable>
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<input>
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<expression>
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<difference>
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<value>0.0003</value>
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<product>
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<property>/sim/rendering/skydome-vis-factor</property>
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<value>0.0001</value>
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</product>
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</difference>
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</expression>
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</input>
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<output>/sim/rendering/rayleigh-no-polution</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Rayleigh:Medium</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<greater-than>
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<property>/position/altitude-ft</property>
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<value>36000</value>
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</greater-than>
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<less-than>
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<property>/position/altitude-ft</property>
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<value>85000</value>
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</less-than>
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</and>
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</condition>
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</enable>
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<input>
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<expression>
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<difference>
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<difference>
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<value>0.0003</value>
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<product>
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<property>/sim/rendering/skydome-vis-factor</property>
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<value>0.0001</value>
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</product>
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</difference>
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<product>
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<difference>
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<property>/position/altitude-ft</property>
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<value>36000</value>
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</difference>
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<value>0.000000002</value>
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</product>
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</difference>
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</expression>
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</input>
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<output>/sim/rendering/rayleigh-no-polution</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Rayleigh:High</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<greater-than>
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<property>/position/altitude-ft</property>
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<value>85000</value>
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</greater-than>
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</and>
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</condition>
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</enable>
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<input>
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<expression>
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<difference>
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<value>0.0002</value>
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<product>
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<property>/sim/rendering/skydome-vis-factor</property>
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<value>0.0001</value>
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</product>
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</difference>
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</expression>
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</input>
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<output>/sim/rendering/rayleigh-no-polution</output>
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</filter>
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Rayleight:Polution:Low</name>
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<type>gain</type>
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<enable>
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<condition>
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<and>
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<not>
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<property>/nasal/local_weather/enabled</property>
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<value>true</value>
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</not>
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<less-than-equals>
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<property>/position/altitude-ft</property>
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<expression>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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<property>/environment/clouds/layer[0]/thickness-ft</property>
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</sum>
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</expression>
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</less-than-equals>
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</and>
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</condition>
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</enable>
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<input>
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<expression>
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<sum>
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<property>/sim/rendering/rayleigh-no-polution</property>
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<product>
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<property>/environment/air-pollution-norm</property>
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<value>0.0003</value>
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</product>
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<product>
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<property>/environment/air-pollution-norm</property>
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<value>0.0004</value>
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<difference>
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<value>1.0</value>
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<product>
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<div>
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<property>/position/altitude-ft</property>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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<property>/environment/clouds/layer[0]/thickness-ft</property>
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<value>1.0</value><!-- to avoid divide by 0 exceptions -->
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</sum>
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</div>
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<div>
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<property>/position/altitude-ft</property>
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<sum>
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<property>/environment/clouds/layer[0]/elevation-ft</property>
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|
<property>/environment/clouds/layer[0]/thickness-ft</property>
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|
<value>1.0</value><!-- to avoid divide by 0 exceptions -->
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</sum>
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</div>
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</product>
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</difference>
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</product>
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</sum>
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</expression>
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</input>
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<output>/sim/rendering/rayleigh</output>
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</filter>
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|
|
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Rayleight:Polution:High</name>
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|
<type>gain</type>
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|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
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|
</not>
|
|
<greater-than>
|
|
<property>/position/altitude-ft</property>
|
|
<expression>
|
|
<sum>
|
|
<property>/environment/clouds/layer[0]/elevation-ft</property>
|
|
<property>/environment/clouds/layer[0]/thickness-ft</property>
|
|
</sum>
|
|
</expression>
|
|
</greater-than>
|
|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<sum>
|
|
<property>/sim/rendering/rayleigh-no-polution</property>
|
|
<product>
|
|
<property>/environment/air-pollution-norm</property>
|
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<value>0.0003</value>
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</product>
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|
</sum>
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</expression>
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</input>
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|
<output>/sim/rendering/rayleigh</output>
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</filter>
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|
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<filter>
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<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Mie:Low</name>
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<type>gain</type>
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|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
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<property>/nasal/local_weather/enabled</property>
|
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<value>true</value>
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</not>
|
|
<less-than>
|
|
<property>/position/altitude-ft</property>
|
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<value>36000</value>
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</less-than>
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|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
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|
<difference>
|
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<value>0.005</value>
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|
<product>
|
|
<property>/sim/rendering/skydome-vis-factor</property>
|
|
<value>0.002</value>
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|
</product>
|
|
</difference>
|
|
</expression>
|
|
</input>
|
|
<output>/sim/rendering/mie</output>
|
|
</filter>
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Mie:Medium</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
|
|
</not>
|
|
<greater-than>
|
|
<property>/position/altitude-ft</property>
|
|
<value>36000</value>
|
|
</greater-than>
|
|
<less-than>
|
|
<property>/position/altitude-ft</property>
|
|
<value>85000</value>
|
|
</less-than>
|
|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<difference>
|
|
<difference>
|
|
<value>0.005</value>
|
|
<product>
|
|
<property>/sim/rendering/skydome-vis-factor</property>
|
|
<value>0.002</value>
|
|
</product>
|
|
</difference>
|
|
<product>
|
|
<difference>
|
|
<property>/position/altitude-ft</property>
|
|
<value>36000</value>
|
|
</difference>
|
|
<value>0.00000004</value>
|
|
</product>
|
|
</difference>
|
|
</expression>
|
|
</input>
|
|
<output>/sim/rendering/mie</output>
|
|
</filter>
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Mie:High</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
|
|
</not>
|
|
<greater-than>
|
|
<property>/position/altitude-ft</property>
|
|
<value>85000</value>
|
|
</greater-than>
|
|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<difference>
|
|
<value>0.003</value>
|
|
<product>
|
|
<property>/sim/rendering/skydome-vis-factor</property>
|
|
<value>0.002</value>
|
|
</product>
|
|
</difference>
|
|
</expression>
|
|
</input>
|
|
<output>/sim/rendering/mie</output>
|
|
</filter>
|
|
|
|
<!-- Density -->
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Density:Low</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
|
|
</not>
|
|
<less-than-equals>
|
|
<property>/position/altitude-ft</property>
|
|
<expression>
|
|
<sum>
|
|
<property>/environment/clouds/layer[0]/elevation-ft</property>
|
|
<property>/environment/clouds/layer[0]/thickness-ft</property>
|
|
</sum>
|
|
</expression>
|
|
</less-than-equals>
|
|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<sum>
|
|
<value>0.3</value>
|
|
<product>
|
|
<property>/environment/air-pollution-norm</property>
|
|
<value>0.05</value>
|
|
</product>
|
|
<product>
|
|
<property>/environment/air-pollution-norm</property>
|
|
<value>0.05</value>
|
|
<difference>
|
|
<value>1.0</value>
|
|
<product>
|
|
<div>
|
|
<property>/position/altitude-ft</property>
|
|
<sum>
|
|
<property>/environment/clouds/layer[0]/elevation-ft</property>
|
|
<property>/environment/clouds/layer[0]/thickness-ft</property>
|
|
<value>1.0</value><!-- to avoid divide by 0 exceptions -->
|
|
</sum>
|
|
</div>
|
|
<div>
|
|
<property>/position/altitude-ft</property>
|
|
<sum>
|
|
<property>/environment/clouds/layer[0]/elevation-ft</property>
|
|
<property>/environment/clouds/layer[0]/thickness-ft</property>
|
|
<value>1.0</value><!-- to avoid divide by 0 exceptions -->
|
|
</sum>
|
|
</div>
|
|
</product>
|
|
</difference>
|
|
</product>
|
|
</sum>
|
|
</expression>
|
|
</input>
|
|
<output>/sim/rendering/dome-density</output>
|
|
</filter>
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:AtmosphericShader:Skydome:Density:High</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<and>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
|
|
</not>
|
|
<greater-than>
|
|
<property>/position/altitude-ft</property>
|
|
<expression>
|
|
<sum>
|
|
<property>/environment/clouds/layer[0]/elevation-ft</property>
|
|
<property>/environment/clouds/layer[0]/thickness-ft</property>
|
|
</sum>
|
|
</expression>
|
|
</greater-than>
|
|
</and>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<sum>
|
|
<value>0.3</value>
|
|
<product>
|
|
<property>/environment/air-pollution-norm</property>
|
|
<value>0.05</value>
|
|
</product>
|
|
</sum>
|
|
</expression>
|
|
</input>
|
|
<output>/sim/rendering/dome-density</output>
|
|
</filter>
|
|
|
|
<!-- Mean elevation. No easy way to do this, so we'll just use the altitude of the nearest METAR station -->
|
|
<filter>
|
|
<name>EnvironmentInterpolator:AtmosphericShader:Skydome:MeanElevation</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<not>
|
|
<property>/nasal/local_weather/enabled</property>
|
|
<value>true</value>
|
|
</not>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<product>
|
|
<property>/environment/metar[0]/station-elevation-ft</property>
|
|
<value>0.3048</value>
|
|
</product>
|
|
</expression>
|
|
</input>
|
|
<output>/environment/mean-terrain-elevation-m</output>
|
|
</filter>
|
|
|
|
<!-- Tree "season" - used to determine whether to display the trees in summer or winter foliage -->
|
|
<filter>
|
|
<name>EnvironmentInterpolator:Trees:Season:Summer</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<not>
|
|
<or>
|
|
<equals>
|
|
<property>sim/startup/season</property>
|
|
<value>winter</value>
|
|
</equals>
|
|
<greater-than>
|
|
<property>/environment/season</property>
|
|
<value>1.5</value>
|
|
</greater-than>
|
|
</or>
|
|
</not>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<value>0.0</value>
|
|
</input>
|
|
<output>/environment/tree-season</output>
|
|
</filter>
|
|
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:Trees:Season:Winter</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<or>
|
|
<equals>
|
|
<property>sim/startup/season</property>
|
|
<value>winter</value>
|
|
</equals>
|
|
<greater-than>
|
|
<property>/environment/season</property>
|
|
<value>1.5</value>
|
|
</greater-than>
|
|
</or>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<value>1.0</value>
|
|
</input>
|
|
<output>/environment/tree-season</output>
|
|
</filter>
|
|
|
|
|
|
<filter>
|
|
<name>EnvironmentInterpolator:Precipitation:Illumination</name>
|
|
<type>gain</type>
|
|
<enable>
|
|
<condition>
|
|
<property>/environment/precipitation-control/detailed-precipitation</property>
|
|
</condition>
|
|
</enable>
|
|
<input>
|
|
<expression>
|
|
<sum>
|
|
<property>/rendering/scene/diffuse/red</property>
|
|
<value>0.3</value>
|
|
<product>
|
|
<property>/sim/rendering/als-secondary-lights/use-searchlight</property>
|
|
<value>0.3</value>
|
|
</product>
|
|
<product>
|
|
<property>/sim/rendering/als-secondary-lights/use-landing-light</property>
|
|
<value>0.3</value>
|
|
</product>
|
|
<product>
|
|
<property>/sim/rendering/als-secondary-lights/use-alt-landing-light</property>
|
|
<value>0.3</value>
|
|
</product>
|
|
</sum>
|
|
</expression>
|
|
</input>
|
|
<output>/environment/precipitation-control/illumination</output>
|
|
<min>0.0</min>
|
|
<max>1.0</max>
|
|
</filter>
|
|
</PropertyList>
|