Implement datarefs to report map coordinates, zoom and range #202
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added 2 commits
May 5, 2024 11:41
AppFunctions API is extended to allow MapApp to report changed values on each update. This is a no-op in standalone environments. In the XPlane environment the values are used for the new datarefs when requested.
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fpw
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May 26, 2024
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This PR implements the enhancement requested in #198.
The first commit refactors some existing code to put a small wrapper class around the X-Plane API calls. Despite this, the callbacks are still a little more 'C' than 'C++' (reinterpret casts are used), and perhaps could be improved by some more complex (and less readable?) template code.
The second commit adds 4 new datarefs to allow other X-Plane components to obtain the Avitab map coordinates (map centre), the zoom level, and an approximation of the distance from top to bottom of the visible map.