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fgdata/Nasal/canvas/map/RWY-profile.symbol

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# See: http://wiki.flightgear.org/MapStructure
# Class things:
var name = 'RWY-profile';
var parents = [DotSym];
var __self__ = caller(0)[0];
DotSym.makeinstance( name, __self__ );
var element_type = "group";
var style = { # style to use by default
zoom: 20,
color: [1,1,1],
center_line_len: 0.75,
line_width: 3
};
SymbolLayer.get(name).df_style = style;
#var already_drawn = 0;
var init = func {
#if(me.already_drawn) return;
var lat = me.model.lat;
var lon = me.model.lon;
var rwyhdg = me.model.heading;
var width = me.model.width;
var length = me.model.length;
var group = me.element;
var ctr_len = length * me.getStyle('center_line_len', 0.75);
var crds = [];
var coord = geo.Coord.new();
width = width * me.getStyle('zoom', 20); # Else rwy is too thin to be visible
var line_w = me.getStyle('line_width', 3);
var color = me.getStyle('color', [1,1,1]);
coord.set_latlon(lat, lon);
coord.apply_course_distance(rwyhdg, -(ctr_len / 2));
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg, (ctr_len));
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
icon_rwy = group.createChild("path", "rwy-cl")
.setStrokeLineWidth(line_w)
.setDataGeo([2,4],crds)
.setColor(color);
#.setStrokeDashArray([10, 20, 10, 20, 10]);
#icon_rwy.hide();
var crds = [];
coord.set_latlon(lat, lon);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg + 90, width/2);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg, length);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
icon_rwy = group.createChild("path", "rwy")
.setStrokeLineWidth(line_w)
.setDataGeo([2,4,4],crds)
.setColor(color);
var crds = [];
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg - 90, width);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg, -length);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
coord.apply_course_distance(rwyhdg + 90, width / 2);
append(crds,"N"~coord.lat());
append(crds,"E"~coord.lon());
icon_rwy = group.createChild("path", "rwy")
.setStrokeLineWidth(line_w)
.setDataGeo([2,4,4,4],crds)
.setColor(color);
};
var draw = func{}
#var update = func() {
# if (me.controller != nil) {
# if (!me.controller.update(me, me.model)) return;
# elsif (!me.controller.isVisible(me.model)) {
# me.element.hide();
# return;
# }
# } else
# me.element.show();
# me.draw();
#}