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<h1>OBCisTransStereo Class Reference</h1> </div>
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<!-- doxytag: class="OBCisTransStereo" -->
<p>Class for handling and storing cis/trans stereochemistry.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="cistrans_8h_source.shtml">cistrans.h</a>></code></p>
<table class="memberdecls">
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Class for handling and storing cis/trans stereochemistry. </p>
<div align="center">
<img src="cistrans.png" alt="cistrans.png"/>
</div>
<p>The <a class="el" href="classOBCisTransStereo.shtml" title="Class for handling and storing cis/trans stereochemistry.">OBCisTransStereo</a> class is used to represent cis/trans stereochemistry. Like all OBTetraPlanarStereo subclasses, it uses the OBStereo::Shape parameters to set/get the OBStereo::Ref values in the <a class="el" href="structConfig.shtml">Config</a> struct. However, since the orientation of the double bond matters, all methods in the "query methods" section check the bonding by actually checking the atoms in the molecule provided through OBStereoBase's constructor. If OBMol::GetAtomById(id) returns 0 for a single id, it will be considered a deleted or implicit hydrogen if the valences confirm this.</p>
<p>The use of OBStereo::Shape is illustarted in the image below. </p>
<div align="center">
<img src="SPshapes.png" alt="SPshapes.png"/>
</div>
<div class="fragment"><pre class="fragment"> <span class="comment">//</span>
<span class="comment">// 3 6 3 6</span>
<span class="comment">// \ / | |</span>
<span class="comment">// 0===1 = | 0 1 |</span>
<span class="comment">// / \ | |</span>
<span class="comment">// 4 5 4-------5</span>
<span class="comment">//</span>
<a class="code" href="classOBCisTransStereo.shtml">OBCisTransStereo</a> ct;
ct.SetCenters(0, 1);
ct.SetRefs(OBStereo::MakeRefs(3, 4, 5, 6), OBStereo::ShapeU);
ct.IsTrans(3, 5); <span class="comment">// true</span>
ct.IsTrans(3, 4); <span class="comment">// false</span>
ct.IsTrans(3, 6); <span class="comment">// false</span>
ct.IsCis(3, 6); <span class="comment">// true</span>
ct.IsCis(3, 4); <span class="comment">// false</span>
ct.IsCis(3, 5); <span class="comment">// false</span>
</pre></div><dl class="since"><dt><b>Since:</b></dt><dd>version 2.3 </dd></dl>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="cistrans_8h_source.shtml">cistrans.h</a></li>
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