7bcf1bb0d6007cb2ce8317b73fb5ba7894a1eb78
- Introduced `CoordinateConverter` for high-precision datum and map grid transformations using Helmert and advanced projection algorithms. - Added `GeographicCoordinate`, `GridCoordinate`, and `ProjectionMethod` classes to represent and manage coordinate data. - Enhanced `MapGrid` with specific grid definitions and parameters. - Updated `BalloonLiveParser` to include reference coordinate handling.
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Java
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