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metar fog/mist/haze: some final(?) tweaks

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This commit is contained in:
Torsten Dreyer 2010-12-15 16:58:42 +01:00
parent 58fbd0d72a
commit 8afcb8da0b
1 changed files with 15 additions and 15 deletions
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30
src/Environment/metarproperties.cxx
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@ -244,8 +244,8 @@ void MetarProperties::set_metar( const char * metar )
// make sure layer actually starts at ground and set it's bottom at a constant
// value below the station's elevation
const double LAYER_BOTTOM_BELOW_STATION_ELEVATION =
fgGetDouble( "/environment/config/offset-from-station-elevation-ft", 200 );
const double LAYER_BOTTOM_STATION_OFFSET =
fgGetDouble( "/environment/params/fog-mist-haze-layer/offset-from-station-elevation-ft", -200 );
SGMetarCloud::Coverage coverage = SGMetarCloud::COVERAGE_NIL;
double thickness = 0;
@ -253,34 +253,34 @@ void MetarProperties::set_metar( const char * metar )
if( isFG ) { // fog
coverage = SGMetarCloud::getCoverage( isBC ?
fgGetString( "/environment/config/fog-bc-2dlayer-coverage", SGMetarCloud::COVERAGE_SCATTERED_STRING ) :
fgGetString( "/environment/config/fog-2dlayer-coverage", SGMetarCloud::COVERAGE_BROKEN_STRING )
fgGetString( "/environment/params/fog-mist-haze-layer/fog-bc-2dlayer-coverage", SGMetarCloud::COVERAGE_SCATTERED_STRING ) :
fgGetString( "/environment/params/fog-mist-haze-layer/fog-2dlayer-coverage", SGMetarCloud::COVERAGE_BROKEN_STRING )
);
thickness = isMI ?
fgGetDouble("/environment/config/fog-shallow-thickness-ft",30) + LAYER_BOTTOM_BELOW_STATION_ELEVATION : // shallow fog, 10m/30ft
fgGetDouble("/environment/config/fog-thickness-ft",500) + LAYER_BOTTOM_BELOW_STATION_ELEVATION; // fog, 150m/500ft
alpha = fgGetDouble("/environment/config/fog-alpha",0.0);
fgGetDouble("/environment/params/fog-mist-haze-layer/fog-shallow-thickness-ft",30) - LAYER_BOTTOM_STATION_OFFSET : // shallow fog, 10m/30ft
fgGetDouble("/environment/params/fog-mist-haze-layer/fog-thickness-ft",500) - LAYER_BOTTOM_STATION_OFFSET; // fog, 150m/500ft
alpha = fgGetDouble("/environment/params/fog-mist-haze-layer/fog-2dlayer-alpha", 1.0);
} else if( isBR ) { // mist
coverage = SGMetarCloud::getCoverage(fgGetString("/environment/config/mist-2dlayer-coverage", SGMetarCloud::COVERAGE_OVERCAST_STRING));
thickness = fgGetDouble("/environment/config/mist-thickness-ft",2000) + LAYER_BOTTOM_BELOW_STATION_ELEVATION;
alpha = fgGetDouble("/environment/config/mist-alpha",0.8);
coverage = SGMetarCloud::getCoverage(fgGetString("/environment/params/fog-mist-haze-layer/mist-2dlayer-coverage", SGMetarCloud::COVERAGE_OVERCAST_STRING));
thickness = fgGetDouble("/environment/params/fog-mist-haze-layer/mist-thickness-ft",2000) - LAYER_BOTTOM_STATION_OFFSET;
alpha = fgGetDouble("/environment/params/fog-mist-haze-layer/mist-2dlayer-alpha",0.8);
} else if( isHZ ) { // hase
coverage = SGMetarCloud::getCoverage(fgGetString("/environment/config/mist-2dlayer-coverage", SGMetarCloud::COVERAGE_OVERCAST_STRING));
thickness = fgGetDouble("/environment/config/haze-thickness-ft",2000) + LAYER_BOTTOM_BELOW_STATION_ELEVATION;
alpha = fgGetDouble("/environment/config/haze-alpha",0.6);
coverage = SGMetarCloud::getCoverage(fgGetString("/environment/params/fog-mist-haze-layer/mist-2dlayer-coverage", SGMetarCloud::COVERAGE_OVERCAST_STRING));
thickness = fgGetDouble("/environment/params/fog-mist-haze-layer/haze-thickness-ft",2000) - LAYER_BOTTOM_STATION_OFFSET;
alpha = fgGetDouble("/environment/params/fog-mist-haze-layer/haze-2dlayer-alpha",0.6);
}
if( coverage != SGMetarCloud::COVERAGE_NIL ) {
SGPropertyNode_ptr layerNode = cloudsNode->getChild(LAYER, 0, true );
layerNode->setDoubleValue( "coverage-type", SGCloudLayer::getCoverageType(coverage_string[coverage]) );
layerNode->setStringValue( "coverage", coverage_string[coverage] );
layerNode->setDoubleValue( "elevation-ft", _station_elevation - LAYER_BOTTOM_BELOW_STATION_ELEVATION );
layerNode->setDoubleValue( "elevation-ft", _station_elevation + LAYER_BOTTOM_STATION_OFFSET );
layerNode->setDoubleValue( "thickness-ft", thickness );
layerNode->setDoubleValue( "visibility-m", _min_visibility );
layerNode->setDoubleValue( "alpha", alpha );
_min_visibility = _max_visibility =
fgGetDouble("/environment/config/visibility-above-layer-m",20000.0); // assume good visibility above the fog
fgGetDouble("/environment/params/fog-mist-haze-layer/visibility-above-layer-m",20000.0); // assume good visibility above the fog
layerOffset = 1; // shudder
}
}