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Physics-based cycling simulator converting static GPX traces into virtual rides with realistic speeds, times and power estimates; elevation correction via Terrarium DEM, smoothing, resampling and GPX output.
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Read and write Garmin FIT files with profile-aware typed decoding/encoding, streaming for large files, developer-field extension support, untyped field access, and a browser demo.
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SDK and tools for reading, encoding and converting FIT activity, course and workout files; includes Maven build profiles, CSV tool, and cookbook recipes and examples.