ne"><a name="l00612"></a><span class="lineno">  612</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;<span class="comment">    /// Calculate the spherical coordinate of a target compare to an origin point.</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;<span class="comment">    /// Ref: https://en.wikipedia.org/wiki/Azimuth</span></div>
<div class="line"><a name="l00615"></a><span class="