103 lines
3 KiB
Text
103 lines
3 KiB
Text
# See: http://wiki.flightgear.org/MapStructure
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# Class things:
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var name = 'WXR_live';
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var parents = [DotSym];
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var __self__ = caller(0)[0];
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DotSym.makeinstance( name, __self__ );
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var element_type = "group";
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var getWXRImageFilePath = func(){
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var home = getprop('sim/fg-home');
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var aircraft = getprop('sim/aircraft');
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var idx = me.layer.getCanvas()._node.getIndex();
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return home ~ '/Export/' ~ aircraft ~ '-wxr-'~idx~'.png';
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};
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var processRequest = func(r) {
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var splitVector = split(",", r.response);
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var timeStamp = split("]",splitVector[size(splitVector) - 1]);
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return timeStamp[0];
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};
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var getWXRAPIUrl = func(lat, lon){
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if (me.timeStamp == nil) { return nil; }
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return "https://tilecache.rainviewer.com/v2/radar/" ~ sprintf("%s",me.timeStamp) ~ "/512/5/" ~ lat ~ "/" ~ lon ~ "/7/0_0.png";
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};
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var fetchWXRMap = func(size){
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if(me.fetching) return;
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var pos = geo.aircraft_position();
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var lat = pos.lat();
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var lon = pos.lon();
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var url = me.getWXRAPIUrl(lat, lon);
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var filePath = me.getWXRImageFilePath();
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if(url == nil) {
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logprint(LOG_INFO,me.name,": No URL!");
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return;
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}
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me.fetching = 1;
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http.save(url, filePath)
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.fail(func(){
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logprint(LOG_INFO,me.name,":Download failed!");}
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)
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.done(func(){
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var sz = size * 2;
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var transl = -size;
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me.wxlayer.hide();
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me.wxlayer.setFile(filePath)
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.setSize(sz, sz)
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.setTranslation(transl, transl);
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me.wxlayer.show();
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me.last_request = getprop("/sim/time/elapsed-sec");
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})
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.always(func(){
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setprop("/instrumentation/wxr/center/latitude-deg", lat);
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setprop("/instrumentation/wxr/center/longitude-deg", lon);
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me.fetching = 0;
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logprint(LOG_DEBUG,me.name,": Layer Request: ",url);
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});
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};
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var init = func {
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#print('WXR init');
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me.fetching = 0;
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me.timeStamp = nil;
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me.fetchRad = me.model.fetchRad; # Radius of radar layer to fetch
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me.range = me.model.rangeNm; # Range of Navigation Display
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me.viewport_radius = me.getOption('viewport_radius', 670);
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me.wxlayer = me.element.createChild("image").set("z-index", -100).hide();
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me.last_request = -600;
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me.update_interval = 600;
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var r_scaled = (me.fetchRad*me.viewport_radius)/me.range;
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me.fetchWXRMap(r_scaled);
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me.timeStamp = nil;
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http.load("https://api.rainviewer.com/public/maps.json").done(func(r) me.timeStamp = processRequest(r));
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};
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var draw = func {
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var range = me.layer.map.getRange(); # Range of Navigation Display
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var update_size = (range != me.range);
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me.range = range;
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me.fetchRad = me.model.fetchRad; # Radius of radar layer to fetch
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var r_scaled = (me.fetchRad*me.viewport_radius)/me.range;
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var hdg = me.layer.map.getHdg();
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var rot = 0 - hdg;
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if(rot < 0) rot = 360 + rot + -getprop("/environment/magnetic-variation-deg");
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me.element.setRotation(rot*D2R);
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if(update_size){
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me.wxlayer.hide();
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me.wxlayer.setSize(2*r_scaled, 2*r_scaled)
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.setTranslation(-r_scaled, -r_scaled);
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me.wxlayer.show();
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}
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if(getprop("/sim/time/elapsed-sec") - me.last_request > me.update_interval) {
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me.fetchWXRMap(r_scaled);
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}
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};
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