smoothed_velocity() [1/2]

template<typename T >

T MayaFlux::Kinesis::smoothed_velocity ( const Memory::HistoryBuffer< T > &  history, double  dt, size_t  window  )

inlinenoexcept

Velocity averaged over a short window rather than a single interval.

Template Parameters

T	Sample type

Parameters

history	Buffer with capacity >= window + 1
dt	Elapsed time between consecutive samples
window	Number of intervals to average over, minimum 1

Returns

Mean of the per-interval first differences across the window

A single backward_difference<1> reading is sensitive to jitter on any one sample pair. Averaging several consecutive one-step differences trades responsiveness for stability, useful when the source stream (tablet, camera-derived tracking) carries sensor noise that would otherwise alias into a spurious high-frequency acceleration or jerk reading downstream.

Definition at line 213 of file Differential.hpp.

{
    using S = scalar_t<T>;
    window = window < 1 ? 1 : window;
    const auto s_dt = static_cast<S>(dt);
    T acc = (history[0] - history[1]) / s_dt;
    for (size_t i = 1; i < window; ++i)
        acc = acc + (history[i] - history[i + 1]) / s_dt;
    return acc / static_cast<S>(window);
}

Referenced by smoothed_velocity().

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