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| <div class="section"> |
| <div class="titlepage"><div><div><h4 class="title"> |
| <a name="geometry.reference.algorithms.convert"></a><a class="link" href="convert.html" title="convert">convert</a> |
| </h4></div></div></div> |
| <p> |
| <a class="indexterm" name="idp109104736"></a> |
| Converts one geometry to another geometry. |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h0"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.description"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.description">Description</a> |
| </h6> |
| <p> |
| The convert algorithm converts one geometry, e.g. a BOX, to another geometry, |
| e.g. a RING. This only works if it is possible and applicable. If the point-order |
| is different, or the closure is different between two geometry types, it |
| will be converted correctly by explicitly reversing the points or closing |
| or opening the polygon rings. |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h1"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.synopsis"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.synopsis">Synopsis</a> |
| </h6> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Geometry1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Geometry2</span><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">convert</span><span class="special">(</span><span class="identifier">Geometry1</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">geometry1</span><span class="special">,</span> <span class="identifier">Geometry2</span> <span class="special">&</span> <span class="identifier">geometry2</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h2"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.parameters"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.parameters">Parameters</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Type |
| </p> |
| </th> |
| <th> |
| <p> |
| Concept |
| </p> |
| </th> |
| <th> |
| <p> |
| Name |
| </p> |
| </th> |
| <th> |
| <p> |
| Description |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| Geometry1 const & |
| </p> |
| </td> |
| <td> |
| <p> |
| Any type fulfilling a Geometry Concept |
| </p> |
| </td> |
| <td> |
| <p> |
| geometry1 |
| </p> |
| </td> |
| <td> |
| <p> |
| A model of the specified concept (source) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Geometry2 & |
| </p> |
| </td> |
| <td> |
| <p> |
| Any type fulfilling a Geometry Concept |
| </p> |
| </td> |
| <td> |
| <p> |
| geometry2 |
| </p> |
| </td> |
| <td> |
| <p> |
| A model of the specified concept (target) |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h3"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.header"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.header">Header</a> |
| </h6> |
| <p> |
| Either |
| </p> |
| <p> |
| <code class="computeroutput"><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></code> |
| </p> |
| <p> |
| Or |
| </p> |
| <p> |
| <code class="computeroutput"><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">algorithms</span><span class="special">/</span><span class="identifier">convert</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h4"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.conformance"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.conformance">Conformance</a> |
| </h6> |
| <p> |
| The function convert is not defined by OGC. |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h5"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.supported_geometries"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.supported_geometries">Supported |
| geometries</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
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| <thead><tr> |
| <th> |
| </th> |
| <th> |
| <p> |
| Point |
| </p> |
| </th> |
| <th> |
| <p> |
| Segment |
| </p> |
| </th> |
| <th> |
| <p> |
| Box |
| </p> |
| </th> |
| <th> |
| <p> |
| Linestring |
| </p> |
| </th> |
| <th> |
| <p> |
| Ring |
| </p> |
| </th> |
| <th> |
| <p> |
| Polygon |
| </p> |
| </th> |
| <th> |
| <p> |
| MultiPoint |
| </p> |
| </th> |
| <th> |
| <p> |
| MultiLinestring |
| </p> |
| </th> |
| <th> |
| <p> |
| MultiPolygon |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| Point |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Segment |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Box |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Linestring |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Ring |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Polygon |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| MultiPoint |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
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| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
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| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| MultiLinestring |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| MultiPolygon |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/nyi.png" alt="nyi"></span> |
| </p> |
| </td> |
| <td> |
| <p> |
| <span class="inlinemediaobject"><img src="../../../img/ok.png" alt="ok"></span> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| In this status matrix above: columns are source types and rows are target |
| types. So a box can be converted to a ring, polygon or multi-polygon, |
| but not vice versa. |
| </p></td></tr> |
| </table></div> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h6"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.complexity"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.complexity">Complexity</a> |
| </h6> |
| <p> |
| Linear |
| </p> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h7"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.example"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.example">Example</a> |
| </h6> |
| <p> |
| Shows how to convert a geometry into another geometry |
| </p> |
| <p> |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| |
| <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> |
| <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> |
| <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_xy</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <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> |
| <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">adapted</span><span class="special">/</span><span class="identifier">boost_tuple</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="identifier">BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS</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="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">d2</span><span class="special">::</span><span class="identifier">point_xy</span><span class="special"><</span><span class="keyword">double</span><span class="special">></span> <span class="identifier">point</span><span class="special">;</span> |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</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> |
| <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</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="identifier">polygon</span><span class="special">;</span> |
| |
| <span class="identifier">point</span> <span class="identifier">p1</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">1</span><span class="special">);</span> |
| <span class="identifier">box</span> <span class="identifier">bx</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">make</span><span class="special"><</span><span class="identifier">box</span><span class="special">>(</span><span class="number">1</span><span class="special">,</span> <span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> <span class="number">2</span><span class="special">);</span> |
| |
| <span class="comment">// Assign a box to a polygon (conversion box->poly)</span> |
| <span class="identifier">polygon</span> <span class="identifier">poly</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">convert</span><span class="special">(</span><span class="identifier">bx</span><span class="special">,</span> <span class="identifier">poly</span><span class="special">);</span> |
| |
| <span class="comment">// Convert a point to another point type (conversion of point-type)</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tuple</span><span class="special"><</span><span class="keyword">double</span><span class="special">,</span> <span class="keyword">double</span><span class="special">></span> <span class="identifier">p2</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">convert</span><span class="special">(</span><span class="identifier">p1</span><span class="special">,</span> <span class="identifier">p2</span><span class="special">);</span> <span class="comment">// source -> target</span> |
| |
| <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">dsv</span><span class="special">;</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> |
| <span class="special"><<</span> <span class="string">"box: "</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">bx</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> <span class="string">"polygon: "</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">poly</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> <span class="string">"point: "</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">p1</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> <span class="string">"point tuples: "</span> <span class="special"><<</span> <span class="identifier">dsv</span><span class="special">(</span><span class="identifier">p2</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> |
| |
| <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Output: |
| </p> |
| <pre class="programlisting">box: ((1, 1), (2, 2)) |
| polygon: (((1, 1), (1, 2), (2, 2), (2, 1), (1, 1))) |
| point: (1, 1) |
| point tuples: (1, 1) |
| </pre> |
| <h6> |
| <a name="geometry.reference.algorithms.convert.h8"></a> |
| <span class="phrase"><a name="geometry.reference.algorithms.convert.see_also"></a></span><a class="link" href="convert.html#geometry.reference.algorithms.convert.see_also">See |
| also</a> |
| </h6> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"> |
| <a class="link" href="assign/assign.html" title="assign">assign</a> |
| </li></ul></div> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| convert is modelled as source -> target (where assign is modelled |
| as target := source) |
| </p></td></tr> |
| </table></div> |
| </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> |
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