ceph/src/boost/libs/qvm/doc/c_arrays.html

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  14 <h1>QVM: Quaternions, Vectors, Matrices</h1>
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  16 <!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
  17 <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
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  19 <div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>C Arrays</h3>
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  21 <p>In <i><span class="RenoLink"><a href="boost_qvm_quat_traits_array_hpp.html">boost/qvm/quat_traits_array.hpp</a></span></i>, <i><span class="RenoLink"><a href="boost_qvm_vec_traits_array_hpp.html">boost/qvm/vec_traits_array.hpp</a></span></i> and <i><span class="RenoLink"><a href="boost_qvm_mat_traits_array_hpp.html">boost/qvm/mat_traits_array.hpp</a></span></i> Boost QVM defines appropriate <i><span class="RenoLink"><a href="quat_traits.html">quat_traits</a></span></i>, <i><span class="RenoLink"><a href="vec_traits.html">vec_traits</a></span></i> and <i><span class="RenoLink"><a href="mat_traits.html">mat_traits</a></span></i> specializations that allow Boost QVM functions to operate directly on plain old C arrays:</p>
  22 <pre>float v[3] = {0,0,7};
  23 float3 vrot = <span class="RenoLink"><a href="rotx_mat_scalar_.html">rotx_mat</a></span>&lt;3&gt;(3.14159f) <span class="RenoLink"><a href="operator_times_mat_vec_.html">*</a></span> v;</pre>
  24 <p>Naturally, operator overloads cannot kick in if all elements of an expression are of built-in types. The following is illegal:</p>
  25 <pre>float v[3] = {0,0,7};
  26 v *= 42;</pre>
  27 <p>The <i><span class="RenoLink"><a href="vref.html">vref</a></span></i> and <i><span class="RenoLink"><a href="mref.html">mref</a></span></i> function templates can be used to work around this issue:</p>
  28 <pre>float v[3] = {0,0,7};
  29 <span class="RenoLink"><a href="vref.html">vref</a></span>(v) <span class="RenoLink"><a href="operator_mul_eq_vec_scalar_.html">*=</a></span> 42;</pre>
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  31 <p><b>Tutorial navigation:</b> <span class="RenoLink"><a href="quaternions_vectors_matrices.html">Quaternions, Vectors, Matrices</a></span> | <span class="RenoLink">C Arrays</span> | <span class="RenoLink"><a href="Views.html">Views</a></span> | <span class="RenoLink"><a href="Swizzling.html">Swizzling</a></span> | <span class="RenoLink"><a href="Interoperability.html">Interoperability</a></span><span class="RenoBR">&nbsp;</span><br/><span class="RenoBR">&nbsp;</span><br/>See also: <span class="RenoLink"><a href="index.html">Boost QVM</a></span></p>
  32 </div><!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
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  39 <small>Copyright (c) 2008-2016 by Emil Dotchevski and Reverge Studios, Inc.<br/>
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