he proportion along the curve, from 0->1
                        that each control point lies on</dd>
<dd><code>positions1D</code> - the co-ordinate position in the current dimension that
                        each control point lies on</dd>
</dl>
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<h4>getValue</h4>
<pre class="methodSignature">public&nbsp;double&nbsp;getValue&#8203;(double&nbsp;x)</pre>
<div class="block">Returns an interpolated value.</div