Function angle_difference_signed

ogsr_engine/xrCore/vector.h:142–156

-PI..PI

// -PI..PI
ICF float angle_difference_signed(float a, float b)
{
    float diff = angle_normalize_signed(a) - angle_normalize_signed(b);
    if (diff > 0)
    {
        if (diff > PI)
            diff -= PI_MUL_2;
    }
    else
    {
        if (diff < -PI)
            diff += PI_MUL_2;
    }
    return diff;
}

// 0..PI
ICF float angle_difference(float a, float b) { return _abs(angle_difference_signed(a, b)); }