352 lines
No EOL
9.3 KiB
Text
352 lines
No EOL
9.3 KiB
Text
# See: http://wiki.flightgear.org/MapStructure
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# Class things:
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var name = 'TERRAIN';
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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 terrain_minalt = props.globals.initNode("/instrumentation/efis[0]/nd/terrain-on-nd/min-altitude", 0,"INT");
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var terrain_maxalt = props.globals.initNode("/instrumentation/efis[0]/nd/terrain-on-nd/max-altitude", -9999,"INT");
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var terrain_alert = props.globals.initNode("/instrumentation/efis[0]/nd/terrain-on-nd/alert", 0,"INT");
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var tile_list = [
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nil,"tile_gl.png","tile_gh.png","tile_yl.png","tile_yh.png","tile_rh.png", # 0-5 low alt
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"tile_gl.png","tile_gh.png","tile_gs.png",nil, # 6-8 hi alt
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"tile_ml.png","tile_cl.png", # 10 magenta - 11 cyan (water)
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"tile_ys.png","tile_rs.png" # 12-13 alert
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];
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var is_terrain = 0;
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var get_elevation = func (lat, lon) {
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var info = geodinfo(lat, lon);
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var elevation = 0;
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if (info != nil) {
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elevation = int(info[0] * 3.2808399);
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me.is_terrain = (info[1] == nil) ? 1 : info[1].solid;
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}
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else { elevation = nil; }
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return elevation;
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}
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var updateTerrain = func {
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if (me.reference == nil) return;
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if(me.fetching) return;
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me.fetching = 1;
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if (me.request_clear == 1) {
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me.request_clear = 0;
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me.clear();
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me.group.setVisible(1);
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}
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var RAD2DEG = 57.2957795;
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var DEG2RAD = 0.016774532925;
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var pos_lat = me.reference.lat();
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var pos_lon = me.reference.lon();
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var heading = me.refheading;
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var altitudeft = me.refaltitudeft;
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var lowaltft = me.reflowaltft;
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var basealtft = me.basealtitudeft;
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var alert_level = me.terrain_alert.getValue();
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var side = (math.mod(me.radar_beacon,2)==0) ? "L" : "R";
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var a = int(me.radar_beacon/2);
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var col = a + 0.5;
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if (side == "R") {
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col = -col;
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}
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var trn = me.terrlayer[side ~ a];
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var len = size(trn);
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var range = me.range;
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var tiles = me.tile_list;
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var proj_lon = pos_lon + ((col * (range/30) * math.sin(DEG2RAD * (heading - 90))) / 40);
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var proj_lat = pos_lat + ((col * (range/30) * math.cos(DEG2RAD * (heading - 90))) / 40);
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var elevft = [];
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me.radar_cleared = 0;
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for (var row = 0; row < len; row += 1) {
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if (trn[row] == nil) {
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append(elevft,-1);
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continue;
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}
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var point_lon = proj_lon + ((row * (range/30) / 40) * math.sin(DEG2RAD * heading));
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var point_lat = proj_lat + ((row * (range/30) / 40) * math.cos(DEG2RAD * heading));
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var elev = me.get_elevation(point_lat, point_lon);
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var grad = 0; #black
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if (elev != nil) {
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if (elev<me.min_altitude) me.min_altitude = elev;
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else if (elev>me.max_altitude) me.max_altitude = elev;
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if (me.is_terrain) {
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if (elev < basealtft) grad = 0; # < 400 near runway use blank
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else {
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var diff = elev - altitudeft;
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if (diff>=0) {
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grad = int(diff/1000) + 3;
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if (grad>5) grad = 5;
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if (alert_level > 0 and a < 6 and grad > 3) {
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if (alert_level == 1 and (grad == 3 or grad == 4)) grad = 12; # solid yellow
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else if (alert_level == 2 and grad == 5) grad = 13; # solid red
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}
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} else {
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if (me.hialtmode == 0) {
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if (diff>=lowaltft) grad = 3; # lite yellow
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else {
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grad = int(diff/1000) + 2;
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if (grad<0) grad = 0;
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}
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} else {
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if (diff>=lowaltft) grad = 3; # lite yellow
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else {
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if (me.bands_range > 0 and elev > me.bands_minalt) {
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grad = int((elev-me.bands_minalt) / me.bands_range) + 6;
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if (grad>8) grad = 8; # solid green
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}
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}
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}
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}
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}
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} else {
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grad = 11; #water
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}
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append(elevft,grad); # 0-5
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} else {
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append(elevft,0); # no data - black (magenta)
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}
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}
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for (var r=0; r < len; r+=1) {
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var imgx = elevft[r];
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if (imgx == -1) continue;
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if (imgx < 1) trn[r].hide();
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else trn[r].setFile(me.imgpath ~ me.tile_list[imgx]).show();
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}
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me.radar_beacon += 1;
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if (me.radar_beacon >= (me.tileradiusw*2)) {
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me.restart_beacon();
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}
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me.fetching = 0;
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};
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var update_altitudes = func {
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me.terrain_minalt.setValue(me.min_altitude);
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me.terrain_maxalt.setValue(me.max_altitude);
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if (me.onground == 0 and (me.max_altitude + 250) < me.refaltitudeft) { # 250 ft tollerance
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me.hialtmode = 1;
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me.bands_range = math.min(2000,(me.max_altitude - math.max(me.min_altitude,me.basealtitudeft))) / 5;
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var maxrange = math.min(2000,me.max_altitude - (me.bands_range * 3));
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me.bands_minalt = int(me.max_altitude - maxrange);
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me.bands_maxalt = me.max_altitude;
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} else {
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me.hialtmode = 0;
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}
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me.min_altitude = 9999;
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me.max_altitude = -9999;
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}
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var restart_beacon = func {
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me.radar_beacon = 0;
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me.radar_cycle += 1;
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me.reference = nil;
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};
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var init = func {
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#print('TERRAIN init');
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me.tile = 33; # preferred 34
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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.imgpath = get_local_path('res/terrainv2/');
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me.radar_beacon = 0;
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me.radar_cycle = 0;
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me.radar_cleared = 1;
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me.request_clear = 0;
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me.visible = 0;
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me.min_altitude = 9999;
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me.max_altitude = -9999;
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me.bands_minalt = 0;
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me.bands_maxalt = 0;
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me.bands_range = 0;
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me.basealtitudeft = nil;
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me.reference = nil;
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me.onfailure = 0;
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me.hialtmode = 0; # high aircraft relative altitude mode
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me.checkarrival = 0;
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me.onground = 1;
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var tile = me.tile;
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var gx = int(me.viewport_radius / tile);
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me.tileradius = gx;
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var limx = int((512/tile)+0.5); # horiz space is smaller
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me.tileradiusw = limx;
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me.terrlayer = {};
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var centx = 0;
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var centy = -me.viewport_radius;
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var group = me.group.createChild("group").set("z-index", -100); #me.element
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for (var c=0; c<limx; c+=1) {
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var hh = c * tile;
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var mx = (c == 0) ? gx : int(math.sqrt(gx*gx-c*c) + 0.5);
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var my = int(c*4/gx);
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var py = centy + (gx-1) * tile;
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var pxr = centx+(c*tile);
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var pxl = centx-(c*tile)-tile;
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var grplx = [];
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var grprx = [];
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for (var r=0; r<mx; r+=1) {
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if (r<my) {
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append(grplx , nil); #skip
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append(grprx , nil);
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} else {
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append(grplx , group.createChild("image").setSize(tile,tile).setTranslation(pxl,py).hide());
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append(grprx , group.createChild("image").setSize(tile,tile).setTranslation(pxr,py).hide());
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}
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py-=tile;
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}
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me.terrlayer["L" ~ c] = grplx;
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me.terrlayer["R" ~ c] = grprx;
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}
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setlistener("/instrumentation/mk-viii/inputs/discretes/ta-tcf-inhibit", func{ # detect GPWS switch status
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me.onfailure = getprop("/instrumentation/mk-viii/inputs/discretes/ta-tcf-inhibit");
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},0,0);
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};
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var clear = func {
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if (me.radar_cleared == 0) {
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me.radar_cleared = 1;
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for (var c=0; c<me.tileradiusw; c+=1 ) {
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var rowL = me.terrlayer["L" ~ c];
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var rowR = me.terrlayer["R" ~ c];
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var len = size(rowL);
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for (var r=0; r<len; r+=1) {
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if (rowL[r] != nil) {
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rowL[r].hide();
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rowR[r].hide();
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}
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}
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}
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}
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}
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var draw = func {
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if(me.fetching) return;
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if (me.onfailure == 1) {
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me.clear();
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me.restart_beacon();
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return;
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}
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if (me.reference == nil) { # update aircraft reference
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var ref = geo.aircraft_position();
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me.reference = ref;
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if (ref != nil) {
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me.refheading = getprop("orientation/heading-magnetic-deg");
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var refalt = ref.alt() * 3.2808399;
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me.refaltitudeft = refalt;
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me.reflowaltft = (pts.Gear.position[1].getValue()) ? -250 : -500;
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me.onground = getprop("/gear/gear[0]/wow");
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if (me.min_altitude != 9999) me.update_altitudes();
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if (me.basealtitudeft == nil and fmgc.FMGCInternal.phase<2) {
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me.basealtitudeft = refalt + 400;
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me.checkarrival = 1;
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}
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if (fmgc.FMGCInternal.phase == 2) {
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me.basealtitudeft = math.min(me.basealtitudeft,400+me.terrain_minalt.getValue());
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}
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if (fmgc.FMGCInternal.phase == 5 and me.checkarrival == 1) {
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me.checkarrival = 0;
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me.basealtitudeft = nil;
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if (fmgc.FMGCInternal.arrApt != nil) {
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var airport = airportinfo(fmgc.FMGCInternal.arrApt);
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if (airport != nil) me.basealtitudeft = 400 + (airport.elevation * M2FT);
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}
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if (me.basealtitudeft == nil) {
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me.basealtitudeft = 400 + me.terrain_minalt.getValue(); # that's fun
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}
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}
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if (fmgc.FMGCInternal.phase == 6 and me.checkarrival == 0) {
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me.checkarrival == 1;
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#me.basealtitudeft = 0;
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}
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if (fmgc.FMGCInternal.phase == 7 and me.checkarrival == 0) {
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me.checkarrival == 1;
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me.basealtitudeft = refalt + 400;
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}
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}
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} else {
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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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if (me.layer.display_changed == 1 or update_size) {
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me.layer.display_changed = 0;
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me.request_clear = 1;
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}
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me.updateTerrain(); # left
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me.updateTerrain(); # right
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}
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};
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setlistener("/instrumentation/mk-viii/outputs/discretes/gpws-warning", func { #warning - TERRAIN red - solid red
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me.terrain_alert.setValue( (getprop("/instrumentation/mk-viii/outputs/discretes/gpws-warning") == 1 ) ? 2 : 0 );
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print("Terrain alert:" ~ getprop("/instrumentation/mk-viii/outputs/discretes/gpws-warning"));
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print(me.terrain_alert.getValue());
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});
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setlistener("/instrumentation/mk-viii/outputs/discretes/gpws-alert", func { #caution - TERRAIN amber - solid yellow
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me.terrain_alert.setValue( (getprop("/instrumentation/mk-viii/outputs/discretes/gpws-alert") == 1 ) ? 1 : 0 );
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print("Terrain alert:" ~ getprop("/instrumentation/mk-viii/outputs/discretes/gpws-warning"));
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print(me.terrain_alert.getValue());
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}); |