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Place default snow line at estimated climatic snow line, based on latitude. Feature is only enabled when 'Set maximum snow line from METAR' is enabled in the environment dialog.

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Gijs de Rooy 2013-05-11 16:51:14 +02:00
parent 2f95972164
commit 2e96b9ea2c
1 changed files with 39 additions and 6 deletions
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45
Environment/metarinterpolator.xml
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@ -429,10 +429,44 @@
<input>/environment/metar/clouds/layer[0]/alpha</input>
<output>/environment/clouds/layer[0]/alpha</output>
</filter>
<!-- replace weather-utility.nas
# Put the snow line slightly below the station's elevation,
# so the station is completely covered with snow
-->
<!--
Place snow line at estimated climatic snow line.
-->
<filter>
<name>MetarController:climatic-snow-line</name>
<type>gain</type>
<gain>1.0</gain>
<enable>
<condition>
<property>/environment/params/metar-updates-snow-level</property>
<property>/environment/params/metar-updates-environment</property>
<not><property>/environment/metar/snow-cover</property></not>
</condition>
</enable>
<input>
<expression>
<sum>
<product>
<property>/position/latitude-deg</property>
<property>/position/latitude-deg</property>
<value>-1</value>
</product>
<product>
<value>8.255</value>
<property>/position/latitude-deg</property>
</product>
<value>5504</value>
</sum>
</expression>
</input>
<output>/environment/snow-level-m</output>
<min>-425</min>
<max>7500</max>
</filter>
<!--
Lower the snow line when a station below the current snow line reports
snow cover.
-->
<filter>
<name>MetarController:snow-level</name>
<type>gain</type>
@ -445,7 +479,7 @@
<property>/environment/metar/valid</property>
<less-than>
<expression>
<difference>
<difference>
<product>
<property>/environment/metar/station-elevation-ft</property>
<value>0.3048</value>
@ -468,7 +502,6 @@
</sum>
</expression>
</input>
<input>3200</input>
<output>/environment/snow-level-m</output>
<min>-425</min>
<max>7500</max>