combolek c8e5360d87 state_manager: Optimize/unify track curve derivative computation (#147) ...

In TSegment there were two different formulas for a derivative. Most places called GetFirstDerivative() that used the direct formula from the curve points. However RaPositionGet() had its own calculation based on pre-computed cubic polynomial coefficients. This latter method is faster and simpler, so change GetFirstDerivative() to use it and change RaPositionGet() to just call GetFirstDerivative().

2026-07-20 00:02:02 +02:00

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