of the curve at <a href="dart-ui/Tangent/position.html">position</a>.</p>
<p>When used with <a href="dart-ui/PathMetric/getTangentForOffset.html">PathMetric.getTangentForOffset</a>, this is the vector of the
curve that is at the given offset along the path (i.e. the direction of the
curve at <a href="dart-ui/Tangent/position.html">position</a>).</p>
        </section>
                <section class="summary source-code" id="source">
          <h2><span>Implementation</span></h2>
          <pre class="langua