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<h1>QVM: Quaternions, Vectors, Matrices</h1>
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<!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
<div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>Accessing Quaternion Elements</h3>
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<div class="RenoIncludeDIV"><div class="RenoIncludeDIV"><p><span class="RenoEscape">#<!--<wiki>`#</wiki>--></span>include <<span class="RenoLink"><a href="boost_qvm_quat_access_hpp.html">boost/qvm/quat_access.hpp</a></span>></p>
<pre>namespace boost
{
namespace <span class="RenoLink"><a href="qvm.html">qvm</a></span>
{
<span class="RenoIncludeSPAN"> <span class="RenoIncludeSPAN">//Only <span class="RenoLink"><a href="SFINAE_enable_if.html">enabled if</a></span>:
// <span class="RenoLink"><a href="is_quat.html">is_quat</a></span><Q>::value
template <class Q> -unspecified-return-type- <span class="RenoLink">S</span>( Q & q );
template <class Q> -unspecified-return-type- <span class="RenoLink">V</span>( Q & q );
template <class Q> -unspecified-return-type- <span class="RenoLink">X</span>( Q & q );
template <class Q> -unspecified-return-type- <span class="RenoLink">Y</span>( Q & q );
template <class Q> -unspecified-return-type- <span class="RenoLink">Z</span>( Q & q );</span></span>
}
}</pre>
</div></div><p>An expression of the form <i>S(q)</i> can be used to access the scalar component of the quaternion <i>q</i>. For example,</p>
<pre>S(q) <span class="RenoLink"><a href="operator_mul_eq_quat_scalar_.html">*=</a></span> 42;</pre>
<p>multiplies the scalar component of <i>q</i> by the scalar 42.</p>
<p>An expression of the form <i>V(q)</i> can be used to access the vector component of the quaternion <i>q</i>. For example,</p>
<pre>V(q) <span class="RenoLink"><a href="operator_mul_eq_quat_scalar_.html">*=</a></span> 42</pre>
<p>multiplies the vector component of <i>q</i> by the scalar 42.</p>
<p>The X, Y and Z elements of the vector component can also be accessed directly using <i>X(q)</i>, <i>Y(q)</i> and <i>Z(q)</i>.</p>
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See also: <span class="RenoPageList"><a href="index.html">Boost QVM</a> | <a href="boost_qvm_quat_access_hpp.html">boost/qvm/quat_access.hpp</a> | <a href="Synopsis.html">Synopsis</a></span>
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<!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
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<small>Copyright (c) 2008-2016 by Emil Dotchevski and Reverge Studios, Inc.<br/>
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