56 lines
1.4 KiB
Text
56 lines
1.4 KiB
Text
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# See: http://wiki.flightgear.org/MapStructure
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#
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# Direct TO line. Displays line from current position to a given Lat/Lon
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# Class things:
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var name = 'DTO';
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var parents = [LineSymbol];
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var __self__ = caller(0)[0];
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LineSymbol.makeinstance( name, __self__ );
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SymbolLayer.get(name).df_style = { # style to use by default
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line_width: 2,
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color: [1.0,1.0,1.0],
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dash_array: [5,5,5,5],
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};
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var init = func {
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me.element.setColor(me.layer.style.color)
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.setStrokeLineWidth(me.layer.style.line_width)
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.setStrokeDashArray(me.layer.style.dash_array);
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};
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var draw = func() {
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me.callback('draw_before');
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printlog(_MP_dbg_lvl, "redrawing a LineSymbol "~me.layer.type);
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me.element.reset();
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var cmds = [];
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var coords = [];
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var cmd = canvas.Path.VG_LINE_TO;
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append(coords,"N"~me.layer.map.getLat());
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append(coords,"E"~me.layer.map.getLon());
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append(cmds,canvas.Path.VG_MOVE_TO);
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var path = me.model;
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if(typeof(path) == 'hash'){
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path = me.model.path;
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if(path == nil)
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__die("LineSymbol model requires a 'path' member (vector)");
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}
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foreach (var m; path) {
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if(size(keys(m)) >= 2){
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var (lat,lon) = me.controller.getpos(m);
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append(coords,"N"~lat);
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append(coords,"E"~lon);
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append(cmds,cmd);
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cmd = canvas.Path.VG_LINE_TO;
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} else {
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cmd = canvas.Path.VG_MOVE_TO;
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}
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}
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me.element.setDataGeo(cmds, coords);
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me.element.update(); # this doesn't help with flickering, it seems
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me.callback('draw_after');
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};
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