heading_vector() [2/4]

glm::vec3 MayaFlux::Kinesis::heading_vector ( const Memory::HistoryBuffer< glm::vec3 > &  history, double  dt  )

inlinenoexcept

Unit direction of a vec3 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 322 of file Differential.hpp.

{
    const glm::vec3 v = velocity(history, dt);
    const float len = glm::length(v);
    return (len > 1e-6F) ? (v / len) : glm::vec3(0.0F);
}

References velocity().

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