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fgdata/Nasal/canvas/map/VOR.symbol

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# Class things:
var name = 'VOR';
var parents = [DotSym];
var __self__ = caller(0)[0];
DotSym.makeinstance( name, __self__ );
var element_type = "group"; # we want a group, becomes "me.element"
var icon_vor = nil;
var range_vor = nil; # two elements that get drawn when needed
var radial_vor = nil; # if one is nil, the other has to be nil
var draw = func {
# Init
if (me.icon_vor == nil) {
me.icon_vor = me.element.createChild("path")
.moveTo(-15,0)
.lineTo(-7.5,12.5)
.lineTo(7.5,12.5)
.lineTo(15,0)
.lineTo(7.5,-12.5)
.lineTo(-7.5,-12.5)
.close()
.setStrokeLineWidth(3)
.setColor(0,0.6,0.85);
}
# Update
if (me.controller.isActive(me.model)) {
if (me.range_vor == nil) {
var rangeNm = me.controller.query_range();
# print("VOR is tuned:", me.model.id);
var radius = (me.model.range_nm/rangeNm)*345;
me.range_vor = me.element.createChild("path")
.moveTo(-radius,0)
.arcSmallCW(radius,radius,0,2*radius,0)
.arcSmallCW(radius,radius,0,-2*radius,0)
.setStrokeLineWidth(3)
.setStrokeDashArray([5, 15, 5, 15, 5])
.setColor(0,1,0);
var course = me.controller.get_tuned_course(me.model.frequency/100);
me.radial_vor = me.element.createChild("path")
.moveTo(0,-radius)
.vert(2*radius)
.setStrokeLineWidth(3)
.setStrokeDashArray([15, 5, 15, 5, 15])
.setColor(0,1,0)
.setRotation(course*D2R);
me.icon_vor.setColor(0,1,0);
}
me.range_vor.show();
me.radial_vor.show();
} elsif (me.range_vor != nil) {
me.range_vor.hide();
me.radial_vor.hide();
}
};