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Retidy, removing align=left from headings and empty paragraphs

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James Gregory 2013-12-30 15:37:13 +11:00
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
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<center>
<table border="1">
<tr>
<td><a href="64-04.html">Previous</a></td>
<td>
<a href="64-04.html">Previous</a>
</td>
<td><a href="index.html">Table of Contents</a></td>
<td>
<a href="index.html">Table of Contents</a>
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<td><a href="65-02.html">Next</a></td>
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<a href="65-02.html">Next</a>
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<p><br /></p>
<h2 id="Heading1">Chapter 65<br />
3-D Clipping and Other Thoughts</h2>
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<p>In a commercial application, you wouldn&rsquo;t want to clip every single polygon in the scene database individually. As I mentioned in the last chapter, the use of bounding volumes to cull chunks of the scene database that fall entirely outside the frustum, without having to consider each polygon separately, is an important performance aspect of scene rendering. Once that&rsquo;s done, however, you&rsquo;re still left with a set of polygons that may be entirely inside, or partially or completely outside, the frustum. In this chapter, I&rsquo;m going to talk about how to clip those remaining polygons. I&rsquo;ll focus on the basics of 3-D clipping, the stuff I wish I&rsquo;d known when I started doing 3-D. There are plenty of ways to speed up clipping under various circumstances, some of which I&rsquo;ll mention, but the material covered below will give you the tools you need to implement functional 3-D clipping.</p>
<p><br /></p>
<center>
<table border="1">
<tr>
<td><a href="64-04.html">Previous</a></td>
<td>
<a href="64-04.html">Previous</a>
</td>
<td><a href="index.html">Table of Contents</a></td>
<td>
<a href="index.html">Table of Contents</a>
</td>
<td><a href="65-02.html">Next</a></td>
<td>
<a href="65-02.html">Next</a>
</td>
</tr>
</table>
</center>