David Koňařík 2e1aeaa258 Fix saving/loading 3D map view viewpoint
Previously the point was saved in origin-relative coordinates. Now since
we pick the origin automatically, it can be changed by various
initialisation routines, so the coordinates will be interpreted relative
to the wrong origin.

This commit changes the format to use map coordinates instead, and saves
the "original" origin from the XML for interpreting older projects.
2025-06-30 10:53:53 +12:00
..
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2025-06-06 01:16:50 +00:00
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