<h5 dir="auto">Description of the problem</h5>
<p dir="auto">geometry.computeVertexNormals() not working for extruded geometry created using absarc.</p>
<p dir="auto">Best explained with pictures and fiddle.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/22593502/19385909/5ce26550-9209-11e6-952d-d63850b5ebe3.png"><img src="https://cloud.githubusercontent.com/assets/22593502/19385909/5ce26550-9209-11e6-952d-d63850b5ebe3.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/22593502/19385933/7dcc1e5a-9209-11e6-974b-c88b2fdf8a86.png"><img src="https://cloud.githubusercontent.com/assets/22593502/19385933/7dcc1e5a-9209-11e6-974b-c88b2fdf8a86.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a href="https://jsfiddle.net/k2r4cqnh/2/" rel="nofollow">https://jsfiddle.net/k2r4cqnh/2/</a></p>
<p dir="auto">I have also tried <code class="notranslate">geometry.computeFaceNormals</code> and <code class="notranslate">shading: SmoothShading</code> but no dice!</p>
<p dir="auto">You get the same problem with the shape with/without a hole.</p>
<h5 dir="auto">Three.js version</h5>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> r81</li>
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<h5 dir="auto">Browser</h5>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> All of them</li>
</ul>
<h5 dir="auto">OS</h5>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Windows</li>
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<p dir="auto">See <a href="http://jsfiddle.net/qjonmmee/12/" rel="nofollow">http://jsfiddle.net/qjonmmee/12/</a></p>
<p dir="auto">The segments are not connected, but they should be.</p>
<p dir="auto">Changing <code class="notranslate">curveSegments</code> on line 24 changes the start and end of the arc, but it shouldn't.</p>