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boost-react-native-bundle

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Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/

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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <title>Polygon Usage</title> </head> <body> <p><font face="Courier New">/*<br> Copyright 2008 Intel Corporation<br> <br> Use, modification and distribution are subject to the Boost Software License,<br> Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at<br> http://www.boost.org/LICENSE_1_0.txt).<br> */<br> #include &lt;boost/polygon/polygon.hpp&gt;<br> #include &lt;cassert&gt;<br> namespace gtl = boost::polygon;<br> using namespace boost::polygon::operators;<br><br> int main() {<br> &nbsp;&nbsp;&nbsp; //lets construct a 10x10 rectangle shaped polygon<br> &nbsp;&nbsp;&nbsp; typedef gtl::polygon_data&lt;int&gt; Polygon;<br> &nbsp;&nbsp;&nbsp; typedef gtl::polygon_traits&lt;Polygon&gt;::point_type Point;<br> &nbsp;&nbsp;&nbsp; Point pts[] = {gtl::construct&lt;Point&gt;(0, 0),<br> &nbsp;&nbsp;&nbsp; gtl::construct&lt;Point&gt;(10, 0),<br> &nbsp;&nbsp;&nbsp; gtl::construct&lt;Point&gt;(10, 10),<br> &nbsp;&nbsp;&nbsp; gtl::construct&lt;Point&gt;(0, 10) };<br> &nbsp;&nbsp;&nbsp; Polygon poly;<br> &nbsp;&nbsp;&nbsp; gtl::set_points(poly, pts, pts+4);<br> <br> &nbsp;&nbsp;&nbsp; //now lets see what we can do with this polygon<br> &nbsp;&nbsp;&nbsp; assert(gtl::area(poly) == 100.0f);<br> &nbsp;&nbsp;&nbsp; assert(gtl::contains(poly, gtl::construct&lt;Point&gt;(5, 5)));<br> &nbsp;&nbsp;&nbsp; assert(!gtl::contains(poly, gtl::construct&lt;Point&gt;(15, 5)));<br> &nbsp;&nbsp;&nbsp; gtl::rectangle_data&lt;int&gt; rect;<br> &nbsp;&nbsp;&nbsp; assert(gtl::extents(rect, poly)); //get bounding box of poly<br> &nbsp;&nbsp;&nbsp; assert(gtl::equivalence(rect, poly)); //hey, that's slick<br> &nbsp;&nbsp;&nbsp; assert(gtl::winding(poly) == gtl::COUNTERCLOCKWISE);<br> &nbsp;&nbsp;&nbsp; assert(gtl::perimeter(poly) == 40.0f);<br> <br> &nbsp;&nbsp;&nbsp; //add 5 to all coords of poly<br> &nbsp;&nbsp;&nbsp; gtl::convolve(poly, gtl::construct&lt;Point&gt;(5, 5));<br> &nbsp;&nbsp;&nbsp; //multiply all coords of poly by 2<br> &nbsp;&nbsp;&nbsp; gtl::scale_up(poly, 2);<br> &nbsp;&nbsp;&nbsp; gtl::set_points(rect, gtl::point_data&lt;int&gt;(10, 10),<br> &nbsp;&nbsp;&nbsp; gtl::point_data&lt;int&gt;(30, 30));<br> &nbsp;&nbsp;&nbsp; assert(gtl::equivalence(poly, rect));<br> &nbsp;&nbsp;&nbsp; return 0;<br> }<br> //Now you know how to use the built in polygon data type<br> &nbsp;</font></p> <table class="docinfo" rules="none" frame="void" id="table1"> <colgroup> <col class="docinfo-name"><col class="docinfo-content"> </colgroup> <tbody vAlign="top"> <tr> <th class="docinfo-name">Copyright:</th> <td>Copyright � Intel Corporation 2008-2010.</td> </tr> <tr class="field"> <th class="docinfo-name">License:</th> <td class="field-body">Distributed under the Boost Software License, Version 1.0. (See accompanying file <tt class="literal"> <span class="pre">LICENSE_1_0.txt</span></tt> or copy at <a class="reference" target="_top" href="http://www.boost.org/LICENSE_1_0.txt"> http://www.boost.org/LICENSE_1_0.txt</a>)</td> </tr> </table> </body> </html>