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use geodinfo() function to retrieve the terrain elevation for a coordinate

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This commit is contained in:
mfranz 2007-06-23 15:28:08 +00:00
parent 709e505f0a
commit 2e9c693e67
1 changed files with 2 additions and 18 deletions
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20
Nasal/geo.nas
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@ -315,16 +315,9 @@ var _put_model = func(path, lat, lon, elev_m = nil, hdg = 0, pitch = 0, roll = 0
} }
var terr_tree = nil;
var terr_lon = nil;
var terr_lat = nil;
var terr_elev = nil;
var elevation = func(lat, lon) { var elevation = func(lat, lon) {
terr_lat.setDoubleValue(lat); var d = geodinfo(lat, lon);
terr_lon.setDoubleValue(lon); return d == nil ? nil : d[0];
var success = fgcommand("terrain-elevation", terr_tree);
return success ? terr_elev.getValue() : nil;
} }
@ -367,15 +360,6 @@ _setlistener("/sim/signals/nasal-dir-initialized", func {
acos = math.acos; acos = math.acos;
mod = math.mod; mod = math.mod;
terr_tree = props.Node.new();
terr_lat = terr_tree.getNode("latitude-deg", 1);
terr_lon = terr_tree.getNode("longitude-deg", 1);
terr_elev = terr_tree.getNode("elevation-m", 1);
terr_lat.setDoubleValue(0.0);
terr_lon.setDoubleValue(0.0);
terr_elev.setDoubleValue(-9999.0);
aircraft_lat = props.globals.getNode("/position/latitude-deg", 1); aircraft_lat = props.globals.getNode("/position/latitude-deg", 1);
aircraft_lon = props.globals.getNode("/position/longitude-deg", 1); aircraft_lon = props.globals.getNode("/position/longitude-deg", 1);
aircraft_alt = props.globals.getNode("/position/altitude-ft", 1); aircraft_alt = props.globals.getNode("/position/altitude-ft", 1);