1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Index of polygons stored in vector</title> 5<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../index.html" title="Chapter 1. Geometry"> 8<link rel="up" href="../rtree_examples.html" title="Examples"> 9<link rel="prev" href="quick_start.html" title="Quick start"> 10<link rel="next" href="index_of_shared_pointers_to_polygons.html" title="Index of shared pointers to polygons"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="quick_start.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rtree_examples.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="index_of_shared_pointers_to_polygons.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="geometry.spatial_indexes.rtree_examples.index_of_polygons_stored_in_vector"></a><a class="link" href="index_of_polygons_stored_in_vector.html" title="Index of polygons stored in vector">Index 28 of polygons stored in vector</a> 29</h4></div></div></div> 30<p> 31</p> 32<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 33<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">point</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 34<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">box</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 35<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">polygon</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 36 37<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">index</span><span class="special">/</span><span class="identifier">rtree</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 38 39<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">cmath</span><span class="special">></span> 40<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">vector</span><span class="special">></span> 41<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 42<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">foreach</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 43 44<span class="keyword">namespace</span> <span class="identifier">bg</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">;</span> 45<span class="keyword">namespace</span> <span class="identifier">bgi</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">index</span><span class="special">;</span> 46 47<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 48<span class="special">{</span> 49 <span class="keyword">typedef</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">point</span><span class="special"><</span><span class="keyword">float</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">cs</span><span class="special">::</span><span class="identifier">cartesian</span><span class="special">></span> <span class="identifier">point</span><span class="special">;</span> 50 <span class="keyword">typedef</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">box</span><span class="special"><</span><span class="identifier">point</span><span class="special">></span> <span class="identifier">box</span><span class="special">;</span> 51 <span class="keyword">typedef</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">polygon</span><span class="special"><</span><span class="identifier">point</span><span class="special">,</span> <span class="keyword">false</span><span class="special">,</span> <span class="keyword">false</span><span class="special">></span> <span class="identifier">polygon</span><span class="special">;</span> <span class="comment">// ccw, open polygon</span> 52 <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span><span class="identifier">box</span><span class="special">,</span> <span class="keyword">unsigned</span><span class="special">></span> <span class="identifier">value</span><span class="special">;</span> 53 54 <span class="comment">// polygons</span> 55 <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">></span> <span class="identifier">polygons</span><span class="special">;</span> 56 57 <span class="comment">// create some polygons</span> 58 <span class="keyword">for</span> <span class="special">(</span> <span class="keyword">unsigned</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">0</span> <span class="special">;</span> <span class="identifier">i</span> <span class="special"><</span> <span class="number">10</span> <span class="special">;</span> <span class="special">++</span><span class="identifier">i</span> <span class="special">)</span> 59 <span class="special">{</span> 60 <span class="comment">// create a polygon</span> 61 <span class="identifier">polygon</span> <span class="identifier">p</span><span class="special">;</span> 62 <span class="keyword">for</span> <span class="special">(</span> <span class="keyword">float</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">0</span> <span class="special">;</span> <span class="identifier">a</span> <span class="special"><</span> <span class="number">6.28316f</span> <span class="special">;</span> <span class="identifier">a</span> <span class="special">+=</span> <span class="number">1.04720f</span> <span class="special">)</span> 63 <span class="special">{</span> 64 <span class="keyword">float</span> <span class="identifier">x</span> <span class="special">=</span> <span class="identifier">i</span> <span class="special">+</span> <span class="keyword">int</span><span class="special">(</span><span class="number">10</span><span class="special">*::</span><span class="identifier">cos</span><span class="special">(</span><span class="identifier">a</span><span class="special">))*</span><span class="number">0.1f</span><span class="special">;</span> 65 <span class="keyword">float</span> <span class="identifier">y</span> <span class="special">=</span> <span class="identifier">i</span> <span class="special">+</span> <span class="keyword">int</span><span class="special">(</span><span class="number">10</span><span class="special">*::</span><span class="identifier">sin</span><span class="special">(</span><span class="identifier">a</span><span class="special">))*</span><span class="number">0.1f</span><span class="special">;</span> 66 <span class="identifier">p</span><span class="special">.</span><span class="identifier">outer</span><span class="special">().</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point</span><span class="special">(</span><span class="identifier">x</span><span class="special">,</span> <span class="identifier">y</span><span class="special">));</span> 67 <span class="special">}</span> 68 69 <span class="comment">// add polygon</span> 70 <span class="identifier">polygons</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">p</span><span class="special">);</span> 71 <span class="special">}</span> 72 73 <span class="comment">// display polygons</span> 74 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"generated polygons:"</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 75 <span class="identifier">BOOST_FOREACH</span><span class="special">(</span><span class="identifier">polygon</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">polygons</span><span class="special">)</span> 76 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">wkt</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">>(</span><span class="identifier">p</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 77 78 <span class="comment">// create the rtree using default constructor</span> 79 <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">rtree</span><span class="special"><</span> <span class="identifier">value</span><span class="special">,</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">rstar</span><span class="special"><</span><span class="number">16</span><span class="special">,</span> <span class="number">4</span><span class="special">></span> <span class="special">></span> <span class="identifier">rtree</span><span class="special">;</span> 80 81 <span class="comment">// fill the spatial index</span> 82 <span class="keyword">for</span> <span class="special">(</span> <span class="keyword">unsigned</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">0</span> <span class="special">;</span> <span class="identifier">i</span> <span class="special"><</span> <span class="identifier">polygons</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">;</span> <span class="special">++</span><span class="identifier">i</span> <span class="special">)</span> 83 <span class="special">{</span> 84 <span class="comment">// calculate polygon bounding box</span> 85 <span class="identifier">box</span> <span class="identifier">b</span> <span class="special">=</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">return_envelope</span><span class="special"><</span><span class="identifier">box</span><span class="special">>(</span><span class="identifier">polygons</span><span class="special">[</span><span class="identifier">i</span><span class="special">]);</span> 86 <span class="comment">// insert new value</span> 87 <span class="identifier">rtree</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">make_pair</span><span class="special">(</span><span class="identifier">b</span><span class="special">,</span> <span class="identifier">i</span><span class="special">));</span> 88 <span class="special">}</span> 89 90 <span class="comment">// find values intersecting some area defined by a box</span> 91 <span class="identifier">box</span> <span class="identifier">query_box</span><span class="special">(</span><span class="identifier">point</span><span class="special">(</span><span class="number">0</span><span class="special">,</span> <span class="number">0</span><span class="special">),</span> <span class="identifier">point</span><span class="special">(</span><span class="number">5</span><span class="special">,</span> <span class="number">5</span><span class="special">));</span> 92 <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">value</span><span class="special">></span> <span class="identifier">result_s</span><span class="special">;</span> 93 <span class="identifier">rtree</span><span class="special">.</span><span class="identifier">query</span><span class="special">(</span><span class="identifier">bgi</span><span class="special">::</span><span class="identifier">intersects</span><span class="special">(</span><span class="identifier">query_box</span><span class="special">),</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">back_inserter</span><span class="special">(</span><span class="identifier">result_s</span><span class="special">));</span> 94 95 <span class="comment">// find 5 nearest values to a point</span> 96 <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">value</span><span class="special">></span> <span class="identifier">result_n</span><span class="special">;</span> 97 <span class="identifier">rtree</span><span class="special">.</span><span class="identifier">query</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">point</span><span class="special">(</span><span class="number">0</span><span class="special">,</span> <span class="number">0</span><span class="special">),</span> <span class="number">5</span><span class="special">),</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">back_inserter</span><span class="special">(</span><span class="identifier">result_n</span><span class="special">));</span> 98 99 <span class="comment">// note: in Boost.Geometry the WKT representation of a box is polygon</span> 100 101 <span class="comment">// note: the values store the bounding boxes of polygons</span> 102 <span class="comment">// the polygons aren't used for querying but are printed</span> 103 104 <span class="comment">// display results</span> 105 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"spatial query box:"</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 106 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">wkt</span><span class="special"><</span><span class="identifier">box</span><span class="special">>(</span><span class="identifier">query_box</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 107 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"spatial query result:"</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 108 <span class="identifier">BOOST_FOREACH</span><span class="special">(</span><span class="identifier">value</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">v</span><span class="special">,</span> <span class="identifier">result_s</span><span class="special">)</span> 109 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">wkt</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">>(</span><span class="identifier">polygons</span><span class="special">[</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">second</span><span class="special">])</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 110 111 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"knn query point:"</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 112 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">wkt</span><span class="special"><</span><span class="identifier">point</span><span class="special">>(</span><span class="identifier">point</span><span class="special">(</span><span class="number">0</span><span class="special">,</span> <span class="number">0</span><span class="special">))</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 113 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"knn query result:"</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 114 <span class="identifier">BOOST_FOREACH</span><span class="special">(</span><span class="identifier">value</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">v</span><span class="special">,</span> <span class="identifier">result_n</span><span class="special">)</span> 115 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">wkt</span><span class="special"><</span><span class="identifier">polygon</span><span class="special">>(</span><span class="identifier">polygons</span><span class="special">[</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">second</span><span class="special">])</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 116 117 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 118<span class="special">}</span> 119</pre> 120<p> 121 </p> 122<h5> 123<a name="geometry.spatial_indexes.rtree_examples.index_of_polygons_stored_in_vector.h0"></a> 124 <span class="phrase"><a name="geometry.spatial_indexes.rtree_examples.index_of_polygons_stored_in_vector.expected_results"></a></span><a class="link" href="index_of_polygons_stored_in_vector.html#geometry.spatial_indexes.rtree_examples.index_of_polygons_stored_in_vector.expected_results">Expected 125 results</a> 126 </h5> 127<pre class="programlisting"><span class="identifier">generated</span> <span class="identifier">polygons</span><span class="special">:</span> 128<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">1</span> <span class="number">0</span><span class="special">,</span><span class="number">0.4</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.5</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.9</span> <span class="number">0</span><span class="special">,-</span><span class="number">0.4</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">0.5</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">1</span> <span class="number">0</span><span class="special">))</span> 129<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">2</span> <span class="number">1</span><span class="special">,</span><span class="number">1.4</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.5</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.1</span> <span class="number">1</span><span class="special">,</span><span class="number">0.6</span> <span class="number">0.2</span><span class="special">,</span><span class="number">1.5</span> <span class="number">0.2</span><span class="special">,</span><span class="number">2</span> <span class="number">1</span><span class="special">))</span> 130<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">3</span> <span class="number">2</span><span class="special">,</span><span class="number">2.4</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.5</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.1</span> <span class="number">2</span><span class="special">,</span><span class="number">1.6</span> <span class="number">1.2</span><span class="special">,</span><span class="number">2.5</span> <span class="number">1.2</span><span class="special">,</span><span class="number">3</span> <span class="number">2</span><span class="special">))</span> 131<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">4</span> <span class="number">3</span><span class="special">,</span><span class="number">3.4</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.5</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.1</span> <span class="number">3</span><span class="special">,</span><span class="number">2.6</span> <span class="number">2.2</span><span class="special">,</span><span class="number">3.5</span> <span class="number">2.2</span><span class="special">,</span><span class="number">4</span> <span class="number">3</span><span class="special">))</span> 132<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">5</span> <span class="number">4</span><span class="special">,</span><span class="number">4.4</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.5</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.1</span> <span class="number">4</span><span class="special">,</span><span class="number">3.6</span> <span class="number">3.2</span><span class="special">,</span><span class="number">4.5</span> <span class="number">3.2</span><span class="special">,</span><span class="number">5</span> <span class="number">4</span><span class="special">))</span> 133<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">6</span> <span class="number">5</span><span class="special">,</span><span class="number">5.4</span> <span class="number">5.8</span><span class="special">,</span><span class="number">4.5</span> <span class="number">5.8</span><span class="special">,</span><span class="number">4.1</span> <span class="number">5</span><span class="special">,</span><span class="number">4.6</span> <span class="number">4.2</span><span class="special">,</span><span class="number">5.5</span> <span class="number">4.2</span><span class="special">,</span><span class="number">6</span> <span class="number">5</span><span class="special">))</span> 134<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">7</span> <span class="number">6</span><span class="special">,</span><span class="number">6.4</span> <span class="number">6.8</span><span class="special">,</span><span class="number">5.5</span> <span class="number">6.8</span><span class="special">,</span><span class="number">5.1</span> <span class="number">6</span><span class="special">,</span><span class="number">5.6</span> <span class="number">5.2</span><span class="special">,</span><span class="number">6.5</span> <span class="number">5.2</span><span class="special">,</span><span class="number">7</span> <span class="number">6</span><span class="special">))</span> 135<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">8</span> <span class="number">7</span><span class="special">,</span><span class="number">7.4</span> <span class="number">7.8</span><span class="special">,</span><span class="number">6.5</span> <span class="number">7.8</span><span class="special">,</span><span class="number">6.1</span> <span class="number">7</span><span class="special">,</span><span class="number">6.6</span> <span class="number">6.2</span><span class="special">,</span><span class="number">7.5</span> <span class="number">6.2</span><span class="special">,</span><span class="number">8</span> <span class="number">7</span><span class="special">))</span> 136<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">9</span> <span class="number">8</span><span class="special">,</span><span class="number">8.4</span> <span class="number">8.8</span><span class="special">,</span><span class="number">7.5</span> <span class="number">8.8</span><span class="special">,</span><span class="number">7.1</span> <span class="number">8</span><span class="special">,</span><span class="number">7.6</span> <span class="number">7.2</span><span class="special">,</span><span class="number">8.5</span> <span class="number">7.2</span><span class="special">,</span><span class="number">9</span> <span class="number">8</span><span class="special">))</span> 137<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">10</span> <span class="number">9</span><span class="special">,</span><span class="number">9.4</span> <span class="number">9.8</span><span class="special">,</span><span class="number">8.5</span> <span class="number">9.8</span><span class="special">,</span><span class="number">8.1</span> <span class="number">9</span><span class="special">,</span><span class="number">8.6</span> <span class="number">8.2</span><span class="special">,</span><span class="number">9.5</span> <span class="number">8.2</span><span class="special">,</span><span class="number">10</span> <span class="number">9</span><span class="special">))</span> 138<span class="identifier">spatial</span> <span class="identifier">query</span> <span class="identifier">box</span><span class="special">:</span> 139<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">0</span> <span class="number">0</span><span class="special">,</span><span class="number">0</span> <span class="number">5</span><span class="special">,</span><span class="number">5</span> <span class="number">5</span><span class="special">,</span><span class="number">5</span> <span class="number">0</span><span class="special">,</span><span class="number">0</span> <span class="number">0</span><span class="special">))</span> 140<span class="identifier">spatial</span> <span class="identifier">query</span> <span class="identifier">result</span><span class="special">:</span> 141<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">1</span> <span class="number">0</span><span class="special">,</span><span class="number">0.4</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.5</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.9</span> <span class="number">0</span><span class="special">,-</span><span class="number">0.4</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">0.5</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">1</span> <span class="number">0</span><span class="special">))</span> 142<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">2</span> <span class="number">1</span><span class="special">,</span><span class="number">1.4</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.5</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.1</span> <span class="number">1</span><span class="special">,</span><span class="number">0.6</span> <span class="number">0.2</span><span class="special">,</span><span class="number">1.5</span> <span class="number">0.2</span><span class="special">,</span><span class="number">2</span> <span class="number">1</span><span class="special">))</span> 143<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">3</span> <span class="number">2</span><span class="special">,</span><span class="number">2.4</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.5</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.1</span> <span class="number">2</span><span class="special">,</span><span class="number">1.6</span> <span class="number">1.2</span><span class="special">,</span><span class="number">2.5</span> <span class="number">1.2</span><span class="special">,</span><span class="number">3</span> <span class="number">2</span><span class="special">))</span> 144<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">4</span> <span class="number">3</span><span class="special">,</span><span class="number">3.4</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.5</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.1</span> <span class="number">3</span><span class="special">,</span><span class="number">2.6</span> <span class="number">2.2</span><span class="special">,</span><span class="number">3.5</span> <span class="number">2.2</span><span class="special">,</span><span class="number">4</span> <span class="number">3</span><span class="special">))</span> 145<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">5</span> <span class="number">4</span><span class="special">,</span><span class="number">4.4</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.5</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.1</span> <span class="number">4</span><span class="special">,</span><span class="number">3.6</span> <span class="number">3.2</span><span class="special">,</span><span class="number">4.5</span> <span class="number">3.2</span><span class="special">,</span><span class="number">5</span> <span class="number">4</span><span class="special">))</span> 146<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">6</span> <span class="number">5</span><span class="special">,</span><span class="number">5.4</span> <span class="number">5.8</span><span class="special">,</span><span class="number">4.5</span> <span class="number">5.8</span><span class="special">,</span><span class="number">4.1</span> <span class="number">5</span><span class="special">,</span><span class="number">4.6</span> <span class="number">4.2</span><span class="special">,</span><span class="number">5.5</span> <span class="number">4.2</span><span class="special">,</span><span class="number">6</span> <span class="number">5</span><span class="special">))</span> 147<span class="identifier">knn</span> <span class="identifier">query</span> <span class="identifier">point</span><span class="special">:</span> 148<span class="identifier">POINT</span><span class="special">(</span><span class="number">0</span> <span class="number">0</span><span class="special">)</span> 149<span class="identifier">knn</span> <span class="identifier">query</span> <span class="identifier">result</span><span class="special">:</span> 150<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">5</span> <span class="number">4</span><span class="special">,</span><span class="number">4.4</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.5</span> <span class="number">4.8</span><span class="special">,</span><span class="number">3.1</span> <span class="number">4</span><span class="special">,</span><span class="number">3.6</span> <span class="number">3.2</span><span class="special">,</span><span class="number">4.5</span> <span class="number">3.2</span><span class="special">,</span><span class="number">5</span> <span class="number">4</span><span class="special">))</span> 151<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">4</span> <span class="number">3</span><span class="special">,</span><span class="number">3.4</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.5</span> <span class="number">3.8</span><span class="special">,</span><span class="number">2.1</span> <span class="number">3</span><span class="special">,</span><span class="number">2.6</span> <span class="number">2.2</span><span class="special">,</span><span class="number">3.5</span> <span class="number">2.2</span><span class="special">,</span><span class="number">4</span> <span class="number">3</span><span class="special">))</span> 152<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">3</span> <span class="number">2</span><span class="special">,</span><span class="number">2.4</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.5</span> <span class="number">2.8</span><span class="special">,</span><span class="number">1.1</span> <span class="number">2</span><span class="special">,</span><span class="number">1.6</span> <span class="number">1.2</span><span class="special">,</span><span class="number">2.5</span> <span class="number">1.2</span><span class="special">,</span><span class="number">3</span> <span class="number">2</span><span class="special">))</span> 153<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">1</span> <span class="number">0</span><span class="special">,</span><span class="number">0.4</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.5</span> <span class="number">0.8</span><span class="special">,-</span><span class="number">0.9</span> <span class="number">0</span><span class="special">,-</span><span class="number">0.4</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">0.5</span> <span class="special">-</span><span class="number">0.8</span><span class="special">,</span><span class="number">1</span> <span class="number">0</span><span class="special">))</span> 154<span class="identifier">POLYGON</span><span class="special">((</span><span class="number">2</span> <span class="number">1</span><span class="special">,</span><span class="number">1.4</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.5</span> <span class="number">1.8</span><span class="special">,</span><span class="number">0.1</span> <span class="number">1</span><span class="special">,</span><span class="number">0.6</span> <span class="number">0.2</span><span class="special">,</span><span class="number">1.5</span> <span class="number">0.2</span><span class="special">,</span><span class="number">2</span> <span class="number">1</span><span class="special">))</span> 155</pre> 156</div> 157<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 158<td align="left"></td> 159<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 160 Wulkiewicz, Oracle and/or its affiliates<p> 161 Distributed under the Boost Software License, Version 1.0. (See accompanying 162 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>) 163 </p> 164</div></td> 165</tr></table> 166<hr> 167<div class="spirit-nav"> 168<a accesskey="p" href="quick_start.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rtree_examples.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="index_of_shared_pointers_to_polygons.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 169</div> 170</body> 171</html> 172
