2"></a>
Spherical (polar) coordinate system, in degree or in radian.
        </p>
<h6>
<a name="geometry.reference.cs.cs_spherical.h0"></a>
          <span class="phrase"><a name="geometry.reference.cs.cs_spherical.description"></a></span><a class="link" href="cs_spherical.html#geometry.reference.cs.cs_spherical.description">Description</a>
        </h6>
<p>
          Defines the spherical coordinate system where points are defined in two
          angles and an optional radius usually known as r, theta, ph