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<!DOCTYPE html>
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<title>Opacity — VPython 3.2 documentation</title>
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<section id="opacity">
<h1>Opacity<a class="headerlink" href="#opacity" title="Permalink to this heading">¶</a></h1>
<figure class="align-default" id="id1">
<img alt="_images/opacity.png" src="_images/opacity.png" />
<figcaption>
<p><span class="caption-text">A blue sphere with opacity 0.4 in front of a red box.</span><a class="headerlink" href="#id1" title="Permalink to this image">¶</a></p>
</figcaption>
</figure>
<p><code class="xref py py-attr docutils literal notranslate"><span class="pre">opacity</span></code> is a parameter whose range is 0-1. An object with <code class="docutils literal notranslate"><span class="pre">opacity=0</span></code> is completely transparent; an object with <code class="docutils literal notranslate"><span class="pre">opacity=1</span></code> is completely opaque. Curve and helix objects are always completely opaque, and do not have an opacity attribute.</p>
<p>Note that if you make one or more objects transparent, antialiasing is turned off, and the edges of objects become jagged. This limitation is due to the current implementation of the VPython graphics engine in WebGL.</p>
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