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<!DOCTYPE html>
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<title>Object Attachments — VPython 3.2 documentation</title>
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<section id="object-attachments">
<h1>Object Attachments<a class="headerlink" href="#object-attachments" title="Permalink to this heading">¶</a></h1>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="trail.html">Leaving a Trail</a></li>
<li class="toctree-l1"><a class="reference internal" href="attacharrow.html">Attach Arrow</a></li>
<li class="toctree-l1"><a class="reference internal" href="attach_light.html">Attach Light</a></li>
</ul>
</div>
<ul class="simple">
<li><p>An object can leave a trail behind it as it moves.</p></li>
</ul>
<figure class="align-default" id="id1">
<img alt="_images/binary_star.png" src="_images/binary_star.png" />
<figcaption>
<p><span class="caption-text">A binary star system, showing two different types of trail.</span><a class="headerlink" href="#id1" title="Permalink to this image">¶</a></p>
</figcaption>
</figure>
<ul class="simple">
<li><p>An arrow representing a vector quantity can be attached to an object, automatically updating as the object moves.</p></li>
</ul>
<figure class="align-default" id="id2">
<img alt="_images/attach_arrow.png" src="_images/attach_arrow.png" />
<figcaption>
<p><span class="caption-text">The arrow represents the instantaneous velocity of the bouncing ball.</span><a class="headerlink" href="#id2" title="Permalink to this image">¶</a></p>
</figcaption>
</figure>
<ul class="simple">
<li><p>To make a moving light, a light can also be attached to an object.</p></li>
</ul>
<figure class="align-default">
<img alt="_images/attach_light.png" src="_images/attach_light.png" />
</figure>
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<li class="toctree-l1"><a class="reference internal" href="objects.html">3D Objects</a></li>
<li class="toctree-l1"><a class="reference internal" href="rate.html">Animations</a></li>
<li class="toctree-l1"><a class="reference internal" href="canvas.html">Canvases</a></li>
<li class="toctree-l1"><a class="reference internal" href="cameraAndLights.html">Camera and Lighting</a></li>
<li class="toctree-l1"><a class="reference internal" href="colorOpacityGlow.html">Color/Opacity/Glow</a></li>
<li class="toctree-l1"><a class="reference internal" href="makeshapes.html">Design New Objects</a></li>
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<li class="toctree-l1"><a class="reference internal" href="math.html">Math Functions</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">Object Attachments</a><ul>
<li class="toctree-l2"><a class="reference internal" href="trail.html">Leaving a Trail</a></li>
<li class="toctree-l2"><a class="reference internal" href="attacharrow.html">Attach Arrow</a></li>
<li class="toctree-l2"><a class="reference internal" href="attach_light.html">Attach Light</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="rotation.html">Rotation</a></li>
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<h3>Related Topics</h3>
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<li>Previous: <a href="vector.html" title="previous chapter">Vector Operations</a></li>
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