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<title>CleanPolygons</title>
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<h1>CleanPolygons</h1>
<p class="Decl"><span class="Comment">Del.»</span> <b>function</b> CleanPolygons(<b>const</b> Polys: TPaths; Distance: double = 1.415): TPaths;</p>
<p class="Decl2"><span class="Comment"> C++ »</span> <b>void</b> CleanPolygons(<b>const</b> Paths &in_polys, Paths &out_polys, double distance = 1.415);</p>
<p class="Decl2"><span class="Comment"> C++ »</span> <b>void</b> CleanPolygons(Paths &polys, double distance = 1.415);</p>
<p class="Decl3"><span class="Comment">C# »</span> <b>public static</b> Paths CleanPolygons(Paths polys, double distance = 1.415);</p>
<br>
<p class="Body"> Removes vertices:
<ul>
<li>that join co-linear edges, or join edges that are almost co-linear (such that if the vertex was moved no more than the specified distance the edges would be co-linear)</li>
<li>that are within the specified distance of an adjacent vertex</li>
<li>that are within the specified distance of a semi-adjacent vertex together with their out-lying vertices</li>
</ul> </p>
<p class="Body"> Vertices are <em>semi-adjacent</em> when they are separated by a single (out-lying) vertex.<br><br> The <em>distance</em> parameter's default value is approximately √2 so that a vertex will be removed when adjacent or semi-adjacent vertices having their corresponding X and Y coordinates differing by no more than 1 unit. (If the egdes are semi-adjacent the out-lying vertex will be removed too.)<br><br> C++ only: This function is overloaded. In the first definition, the <em>in_polys</em> and <em>out_polys</em> parameters can reference the same <em>Paths</em> object though in that case the calling code might be clearer if the second definition (accepting a single <em>Paths</em> parameter) is used.<br><br> <img src="../../../../Images/clean1.png" alt="" border="0"> <img src="../../../../Images/clean2.png" alt="" border="0"> </p>
<h2 id="Auto-SeeAlso">See Also</h2>
<p class="Body"><a href="CleanPolygon.htm">CleanPolygon</a>, <a href="SimplifyPolygons.htm">SimplifyPolygons</a></p>
<p class="Copyright" id="auto"> <br><br> Copyright ©2010-2014 Angus Johnson - Clipper 6.2.1 - Help file built on 1-November-2014 <br><br> </p>
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