heading_vector() [1/4]

glm::vec2 MayaFlux::Kinesis::heading_vector ( const Memory::HistoryBuffer< glm::vec2 > &  history, double  dt  )

inlinenoexcept

Unit direction of a vec2 first difference.

Parameters

history	Buffer with capacity >= 2
dt	Elapsed time between samples 0 and 1

Returns

Normalized velocity, or the zero vector when speed is below 1e-6 to avoid dividing by zero on a stationary point

Definition at line 308 of file Differential.hpp.

{
    const glm::vec2 v = velocity(history, dt);
    const float len = glm::length(v);
    return (len > 1e-6F) ? (v / len) : glm::vec2(0.0F);
}

References velocity().

Referenced by heading_vector(), and heading_vector().

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