Enroute Flight Navigation is a fairly standard Qt application. The user interface is written in QML, the hard functionality is written in C++.

This document describes the C++ part of the program. The documentation is continuously generated from the master branch of the GIT repository.

A. Moving map

The moving map is a standard QML Map object that uses the mapboxgl plugin. As mapboxgl expects the map data to come over the internet, there is a GeoMapProvider object that runs an internal http-server to provide the data.

B. C++ classes exposed to QML

The main() function constructs a number of C++ objects and exposes them to QML.

B.1 C++ classes providing core functionality

• An instance of the class Global, under the name "global". This class allows access to other application-wide class instances. Eventually, all application-wide instances should be handled by this class.
• Instances of the classes GeoMapProvider, under the name "geoMapProvider". This classes allow access to the library of geographic maps, and provide the map data in formats suitable for use by QML.
• An instance of the class PositionProvider, under the name "positionProvider". This class contains the satellite navigaton functionality and is really a thin wrapper around QGeoPositionInfoSource, that provides data in formats suitable for aviation purposes.

B.2 Other C++ classes

• An instance of the class Library, under the name "library". This class helps to maintain a library of flight routes.
• Instances of the classes Aircraft, FlightRoute and Wind, under the name "aircraft", "flightRoute" and "wind". These classes are used for route and wind computation.
• An instance of the class Clock, under the name "clock". This class provides time information, computation and description.
• An instance of the class Weather::DownloadManager, under the name "weatherDownloadManager". This class provides weather info.