| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> |
| <title>qbegin(rtree<...> const &, Predicates const &)</title> |
| <link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> |
| <link rel="home" href="../../../../index.html" title="Chapter 1. Geometry"> |
| <link rel="up" href="../group__rtree__functions.html" title="R-tree free functions (boost::geometry::index::)"> |
| <link rel="prev" href="query_rtree______const____predicates_const____outiter_.html" title="query(rtree<...> const &, Predicates const &, OutIter)"> |
| <link rel="next" href="qend_rtree______const___.html" title="qend(rtree<...> const &)"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table cellpadding="2" width="100%"><tr> |
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> |
| <td align="center"><a href="../../../../../../../../index.html">Home</a></td> |
| <td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> |
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> |
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> |
| <td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="query_rtree______const____predicates_const____outiter_.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../group__rtree__functions.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="qend_rtree______const___.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___"></a><a name="group__rtree__functions_1ga45c2b7b112bf730d10367e10df62aa3c"></a><a class="link" href="qbegin_rtree______const____predicates_const___.html" title="qbegin(rtree<...> const &, Predicates const &)">qbegin(rtree<...> |
| const &, Predicates const &)</a> |
| </h5></div></div></div> |
| <p> |
| <a class="indexterm" name="idp128498496"></a> |
| Returns the query iterator pointing at the begin of the query range. |
| </p> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h0"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.description"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.description">Description</a> |
| </h6> |
| <p> |
| This method returns the iterator which may be used to perform iterative |
| queries. For the information about the predicates which may be passed |
| to this method see <a class="link" href="query_rtree______const____predicates_const____outiter_.html#group__rtree__functions_1gadb43b211d5d743ebe2ef256328286e95">query()</a>. |
| </p> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h1"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.synopsis"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.synopsis">Synopsis</a> |
| </h6> |
| <pre class="programlisting"><code class="computeroutput"><span class="keyword">template</span><span class="special"><</span></code><code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Value</span></code><code class="computeroutput"><span class="special">,</span></code> |
| <code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Parameters</span></code><code class="computeroutput"><span class="special">,</span></code> |
| <code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">IndexableGetter</span></code><code class="computeroutput"><span class="special">,</span></code> |
| <code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">EqualTo</span></code><code class="computeroutput"><span class="special">,</span></code> |
| <code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Allocator</span></code><code class="computeroutput"><span class="special">,</span></code> |
| <code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Predicates</span></code><code class="computeroutput"><span class="special">></span></code> |
| <code class="computeroutput"><span class="identifier">rtree</span><span class="special"><</span> <span class="identifier">Value</span><span class="special">,</span> <span class="identifier">Parameters</span><span class="special">,</span> <span class="identifier">IndexableGetter</span><span class="special">,</span> <span class="identifier">EqualTo</span><span class="special">,</span> <span class="identifier">Allocator</span> <span class="special">>::</span><span class="identifier">const_query_iterator</span></code> <code class="computeroutput"><span class="identifier">qbegin</span></code><code class="computeroutput"><span class="special">(</span></code><code class="computeroutput"><span class="identifier">rtree</span><span class="special"><</span> <span class="identifier">Value</span><span class="special">,</span> <span class="identifier">Parameters</span><span class="special">,</span> <span class="identifier">IndexableGetter</span><span class="special">,</span> <span class="identifier">EqualTo</span><span class="special">,</span> <span class="identifier">Allocator</span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">tree</span></code><code class="computeroutput"><span class="special">,</span></code> <code class="computeroutput"><span class="identifier">Predicates</span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">predicates</span></code><code class="computeroutput"><span class="special">)</span></code> |
| </pre> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h2"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.parameter_s_"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.parameter_s_">Parameter(s)</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Type |
| </p> |
| </th> |
| <th> |
| <p> |
| Name |
| </p> |
| </th> |
| <th> |
| <p> |
| Description |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">rtree</span><span class="special"><</span> |
| <span class="identifier">Value</span><span class="special">,</span> |
| <span class="identifier">Parameters</span><span class="special">,</span> |
| <span class="identifier">IndexableGetter</span><span class="special">,</span> |
| <span class="identifier">EqualTo</span><span class="special">,</span> |
| <span class="identifier">Allocator</span> <span class="special">></span> |
| <span class="keyword">const</span> <span class="special">&</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">tree</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| The rtree. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">Predicates</span> <span class="keyword">const</span> <span class="special">&</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">predicates</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Predicates. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h3"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.returns"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.returns">Returns</a> |
| </h6> |
| <p> |
| The iterator pointing at the begin of the query range. |
| </p> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h4"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.example"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.example">Example</a> |
| </h6> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="keyword">for</span> <span class="special">(</span> <span class="identifier">Rtree</span><span class="special">::</span><span class="identifier">const_query_iterator</span> <span class="identifier">it</span> <span class="special">=</span> <span class="identifier">qbegin</span><span class="special">(</span><span class="identifier">tree</span><span class="special">,</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">nearest</span><span class="special">(</span><span class="identifier">pt</span><span class="special">,</span> <span class="number">10000</span><span class="special">))</span> <span class="special">;</span> |
| <span class="identifier">it</span> <span class="special">!=</span> <span class="identifier">qend</span><span class="special">(</span><span class="identifier">tree</span><span class="special">)</span> <span class="special">;</span> <span class="special">++</span><span class="identifier">it</span> <span class="special">)</span> |
| <span class="special">{</span> |
| <span class="comment">// do something with value</span> |
| <span class="keyword">if</span> <span class="special">(</span> <span class="identifier">has_enough_nearest_values</span><span class="special">()</span> <span class="special">)</span> |
| <span class="keyword">break</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| <p> |
| </p> |
| <h6> |
| <a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.h5"></a> |
| <span class="phrase"><a name="geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.throws"></a></span><a class="link" href="qbegin_rtree______const____predicates_const___.html#geometry.reference.spatial_indexes.group__rtree__functions.qbegin_rtree______const____predicates_const___.throws">Throws</a> |
| </h6> |
| <p> |
| If predicates copy throws. If allocation throws. |
| </p> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2009-2015 Barend Gehrels, Bruno Lalande, |
| Mateusz Loskot, Adam Wulkiewicz, Oracle and/or its affiliates<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
| </div></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="query_rtree______const____predicates_const____outiter_.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../group__rtree__functions.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="qend_rtree______const___.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| </body> |
| </html> |