projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | <!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' |
| 2 | 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'> | |
| 3 | <html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'> | |
| 4 | <head> | |
| 5 | <meta http-equiv='Content-Type' content='text/html; charset=utf-8'/> | |
| 6 | <title>accessing quaternion elements</title> | |
| 7 | <link href='reno.css' type='text/css' rel='stylesheet'/> | |
| 8 | </head> | |
| 9 | <body> | |
| 10 | <div class="body-0"> | |
| 11 | <div class="body-1"> | |
| 12 | <div class="body-2"> | |
| 13 | <div> | |
| 14 | <h1>QVM: Quaternions, Vectors, Matrices</h1> | |
| 15 | </div> | |
| 16 | <!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. --> | |
| 17 | <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> | |
| 18 | <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> | |
| 19 | <div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>Accessing Quaternion Elements</h3> | |
| 20 | </div> | |
| 21 | <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> | |
| 22 | <pre>namespace boost | |
| 23 | { | |
| 24 | namespace <span class="RenoLink"><a href="qvm.html">qvm</a></span> | |
| 25 | { | |
| 26 | <span class="RenoIncludeSPAN"> <span class="RenoIncludeSPAN">//Only <span class="RenoLink"><a href="SFINAE_enable_if.html">enabled if</a></span>: | |
| 27 | // <span class="RenoLink"><a href="is_quat.html">is_quat</a></span><Q>::value | |
| 28 | ||
| 29 | template <class Q> -unspecified-return-type- <span class="RenoLink">S</span>( Q & q ); | |
| 30 | template <class Q> -unspecified-return-type- <span class="RenoLink">V</span>( Q & q ); | |
| 31 | template <class Q> -unspecified-return-type- <span class="RenoLink">X</span>( Q & q ); | |
| 32 | template <class Q> -unspecified-return-type- <span class="RenoLink">Y</span>( Q & q ); | |
| 33 | template <class Q> -unspecified-return-type- <span class="RenoLink">Z</span>( Q & q );</span></span> | |
| 34 | } | |
| 35 | }</pre> | |
| 36 | </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> | |
| 37 | <pre>S(q) <span class="RenoLink"><a href="operator_mul_eq_quat_scalar_.html">*=</a></span> 42;</pre> | |
| 38 | <p>multiplies the scalar component of <i>q</i> by the scalar 42.</p> | |
| 39 | <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> | |
| 40 | <pre>V(q) <span class="RenoLink"><a href="operator_mul_eq_quat_scalar_.html">*=</a></span> 42</pre> | |
| 41 | <p>multiplies the vector component of <i>q</i> by the scalar 42.</p> | |
| 42 | <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> | |
| 43 | </div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div> | |
| 44 | 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> | |
| 45 | </div> | |
| 46 | <!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. --> | |
| 47 | <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> | |
| 48 | <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> | |
| 49 | <div id="footer"> | |
| 50 | <p> | |
| 51 | <a class="logo" href="http://jigsaw.w3.org/css-validator/check/referer"><img class="logo_pic" src="valid-css.png" alt="Valid CSS" height="31" width="88"/></a> | |
| 52 | <a class="logo" href="http://validator.w3.org/check?uri=referer"><img class="logo_pic" src="valid-xhtml.png" alt="Valid XHTML 1.0" height="31" width="88"/></a> | |
| 53 | <small>Copyright (c) 2008-2016 by Emil Dotchevski and Reverge Studios, Inc.<br/> | |
| 54 | Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License, Version 1.0</a>.</small> | |
| 55 | </p> | |
| 56 | </div> | |
| 57 | </div> | |
| 58 | </div> | |
| 59 | </div> | |
| 60 | </body> | |
| 61 | </html> |