total_turning() [1/2]

float MayaFlux::Kinesis::total_turning ( const Memory::HistoryBuffer< glm::vec2 > &  history, size_t  window  )

inlinenoexcept

Total absolute turning accumulated across a window.

Parameters

history	Buffer of positions, capacity >= window
window	Number of samples, minimum 3

Returns

Sum of |angular_delta| between consecutive segment headings

A jitteriness measure distinct from curvature at a point: a path that wiggles back and forth accumulates large total turning even if its net curvature at any single sample is small, since positive and negative bends do not cancel here the way they would in a single derivative.

Definition at line 504 of file Differential.hpp.

{
    window = window < 3 ? 3 : window;
    float total = 0.0F;
    float prev_heading = heading(history[0] - history[1]);
    for (size_t i = 1; i + 1 < window; ++i) {
        const float h = heading(history[i] - history[i + 1]);
        total += std::abs(angular_delta(h, prev_heading));
        prev_heading = h;
    }
    return total;
}

References angular_delta(), h, and heading().

Referenced by total_turning().

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