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authorDavid Thompson <dthompson2@worcester.edu>2023-12-28 11:23:49 -0500
committerDavid Thompson <dthompson2@worcester.edu>2023-12-28 11:23:49 -0500
commit25c5eac5e6ca1035db1eddd7bea9ac78531da57e (patch)
tree96377006bbfee75bcf0ce208c1ef89cbdfa5b803 /manuals/chickadee/Quaternions.html
parent5b2e467a7e5e2ffbb0cbbf2557283be891d8206b (diff)
Delete manuals!
Good riddance! These are hosted on files.dthompson.us now!
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-<span id="Quaternions"></span><div class="header">
-<p>
-Next: <a href="Easings.html" accesskey="n" rel="next">Easings</a>, Previous: <a href="Matrices.html" accesskey="p" rel="prev">Matrices</a>, Up: <a href="Math.html" accesskey="u" rel="up">Math</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>
-</div>
-<hr />
-<span id="Quaternions-1"></span><h4 class="subsection">5.2.5 Quaternions</h4>
-
-<p>In game development, the quaternion is most often used to represent
-rotations. Why not use a matrix for that, you may ask. Unlike
-matrices, quaternions can be interpolated (animated) and produce a
-meaningful result. When interpolating two quaternions, there is a
-smooth transition from one rotation to another, whereas interpolating
-two matrices would yield garbage.
-</p>
-<dl>
-<dt id="index-quaternion">Procedure: <strong>quaternion</strong> <em>x y z w</em></dt>
-<dd><p>Return a new quaternion with values <var>x</var>, <var>y</var>, <var>z</var>, and
-<var>w</var>.
-</p></dd></dl>
-
-<dl>
-<dt id="index-quaternion_003f">Procedure: <strong>quaternion?</strong> <em>obj</em></dt>
-<dd><p>Return <code>#t</code> if <var>obj</var> is a quaternion.
-</p></dd></dl>
-
-<dl>
-<dt id="index-quaternion_002dw">Procedure: <strong>quaternion-w</strong> <em>q</em></dt>
-<dd><p>Return the W component of the quaternion <var>q</var>.
-</p></dd></dl>
-
-<dl>
-<dt id="index-quaternion_002dx">Procedure: <strong>quaternion-x</strong> <em>q</em></dt>
-<dd><p>Return the X component of the quaternion <var>q</var>.
-</p></dd></dl>
-
-<dl>
-<dt id="index-quaternion_002dy">Procedure: <strong>quaternion-y</strong> <em>q</em></dt>
-<dd><p>Return the Y component of the quaternion <var>q</var>.
-</p></dd></dl>
-
-<dl>
-<dt id="index-quaternion_002dz">Procedure: <strong>quaternion-z</strong> <em>q</em></dt>
-<dd><p>Return the Z component of the quaternion <var>q</var>.
-</p></dd></dl>
-
-<dl>
-<dt id="index-make_002didentity_002dquaternion">Procedure: <strong>make-identity-quaternion</strong></dt>
-<dd><p>Return the identity quaternion.
-</p></dd></dl>
-
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