83 lines
2.6 KiB
Text
83 lines
2.6 KiB
Text
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# See: http://wiki.flightgear.org/MapStructure
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# GPS line. Displays GPS leg information
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# Class things:
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var name = 'GPS';
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var parents = [SymbolLayer.Controller];
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var __self__ = caller(0)[0];
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SymbolLayer.Controller.add(name, __self__);
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SymbolLayer.add(name, {
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parents: [MultiSymbolLayer],
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type: name, # Symbol type
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df_controller: __self__, # controller to use by default -- this one
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df_options: { # default configuration options
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from_node : "/instrumentation/gps/wp/wp[0]",
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to_node : "/instrumentation/gps/wp/wp[1]",
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trigger_node1 : "/instrumentation/gps/wp/wp[1]/longitude-deg",
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trigger_node2 : "/instrumentation/gps/wp/wp[1]/latitude-deg",
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trigger_node3 : "/instrumentation/gps/wp/wp[1]/altitude-ft",
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}
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});
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var new = func(layer) {
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var m = {
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parents: [__self__],
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layer: layer,
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map: layer.map,
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listeners: [],
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last_result: [],
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};
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layer.searcher._equals = func(l,r) 0; # TODO: create model objects instead?
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append(m.listeners, setlistener(layer.options.trigger_node1, func m.layer.update(), 0, 0));
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append(m.listeners, setlistener(layer.options.trigger_node2, func m.layer.update(), 0, 0));
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append(m.listeners, setlistener(layer.options.trigger_node3, func m.layer.update(), 0, 0));
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m.addVisibilityListener();
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return m;
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};
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var del = func() {
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foreach (var l; me.listeners)
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removelistener(l);
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};
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var searchCmd = func() {
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var coords = [];
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var from = props.globals.getNode(me.layer.options.from_node);
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var to = props.globals.getNode(me.layer.options.to_node);
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# Perform various checks for valid data. Unfortunately to avoid either
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# having continual triggering every frame as the property values are updated
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# (though not changed), we need to trigger this on any changes to the waypoint.
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# In an initial case, not all the properties may have been initialized yet.
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if ((from == nil) or (to == nil)) return [];
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if (to.getNode("valid").getBoolValue() == 0) return [];
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if (to.getValue("longitude-deg") == nil) return [];
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if (to.getValue("latitude-deg") == nil) return [];
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# Nil altitude is valid - set to 0.
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# if (to.getValue("altitude-ft") == nil) return [];
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append(coords, {lon: from.getValue("longitude-deg"),
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lat: from.getValue("latitude-deg"),
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alt: from.getValue("altitude-ft") });
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append(coords, {lon: to.getValue("longitude-deg"),
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lat: to.getValue("latitude-deg"),
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alt: to.getValue("altitude-ft") or 0.0});
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var lines = [];
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append(lines, {
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id: to.getNode("name", 1).getValue(),
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type: "gps",
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path: coords,
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equals: func(o){
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return (me.path == o.path and me.type == o.type);
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}
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});
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return lines;
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};
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