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Canvas Map Airport display

Canvas is FlightGear's new fully scriptable 2D drawing system that will allow you to easily create new instruments, HUDs and even GUI dialogs and custom GUI widgets, without having to write C++ code and without having to rebuild FlightGear.

Re: Canvas Map Airport display

Postby Gijs » Tue Aug 26, 2014 8:45 am

@Avionyx, EGKL is shown. You just need to zoom in a little more. Small airports are not shown at large zoom levels.

On the normal map dialog by default, non-hard surface airports (grass, dirt), longest runway less than 2000 ft and heliports are not shown. You can change this behaviour by setting:
- /gui/map/hard-surfaced-airports=0
- /sim/navdb/min-runway-length-ft=200

I did see some airports on the normal map that weren't on the Canvas map (e.g. EHMZ; see below). Not sure why that is...

Airports: EHAM, EHLE, KSFO
Aircraft: 747-400
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Re: Canvas Map Airport display

Postby Hooray » Tue Aug 26, 2014 10:34 am

The C++ code for the hard-coded Map dialog can be found in $FG_SRC/GUI - specifically, it's MapWidget.cxx.

Like I mentioned previously, the property is read from the tree, and defaulted to 2000: ... t.cxx#L387

The struct/class there basically sets up the filter that is used currently - we don't use this filter in the other dialog though.
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Re: Canvas Map Airport display

Postby Johan G » Tue Aug 26, 2014 4:53 pm

As those filters are controlled by properties, I guess it means that an aircraft developer could set the map(s) to only show airports/runways usable for that type of aircraft. ;)
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