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  24 </div>
  25 <div class="section">
  26 <div class="titlepage"><div><div><h5 class="title">
  27 <a name="geometry.reference.io.svg.svg_mapper"></a><a class="link" href="svg_mapper.html" title="svg_mapper">svg_mapper</a>
  28 </h5></div></div></div>
  29 <p>
  30             <a class="indexterm" name="idp126249392"></a>
  31 Helper class to create SVG maps.
  32           </p>
  33 <h6>
  34 <a name="geometry.reference.io.svg.svg_mapper.h0"></a>
  35             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.synopsis"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.synopsis">Synopsis</a>
  36           </h6>
  37 <p>
  38 </p>
  39 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Point</span><span class="special">,</span> <span class="keyword">bool</span> <span class="identifier">SameScale</span><span class="special">&gt;</span>
  40 <span class="keyword">class</span> <span class="identifier">svg_mapper</span>
  41       <span class="special">:</span> <span class="identifier">noncopyable</span>
  42 <span class="special">{</span>
  43   <span class="comment">// ...</span>
  44 <span class="special">};</span>
  45 </pre>
  46 <p>
  47           </p>
  48 <h6>
  49 <a name="geometry.reference.io.svg.svg_mapper.h1"></a>
  50             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.template_parameter_s_"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.template_parameter_s_">Template
  51             parameter(s)</a>
  52           </h6>
  53 <div class="informaltable"><table class="table">
  54 <colgroup>
  55 <col>
  56 <col>
  57 <col>
  58 </colgroup>
  59 <thead><tr>
  60 <th>
  61                     <p>
  62                       Parameter
  63                     </p>
  64                   </th>
  65 <th>
  66                     <p>
  67                       Default
  68                     </p>
  69                   </th>
  70 <th>
  71                     <p>
  72                       Description
  73                     </p>
  74                   </th>
  75 </tr></thead>
  76 <tbody>
  77 <tr>
  78 <td>
  79                     <p>
  80                       typename Point
  81                     </p>
  82                   </td>
  83 <td>
  84                   </td>
  85 <td>
  86                     <p>
  87                       Point type, for input geometries.
  88                     </p>
  89                   </td>
  90 </tr>
  91 <tr>
  92 <td>
  93                     <p>
  94                       bool SameScale
  95                     </p>
  96                   </td>
  97 <td>
  98                     <p>
  99                       true
 100                     </p>
 101                   </td>
 102 <td>
 103                     <p>
 104                       Boolean flag indicating if horizontal and vertical scale should
 105                       be the same. The default value is true
 106                     </p>
 107                   </td>
 108 </tr>
 109 </tbody>
 110 </table></div>
 111 <h6>
 112 <a name="geometry.reference.io.svg.svg_mapper.h2"></a>
 113             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.constructor_s_"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.constructor_s_">Constructor(s)</a>
 114           </h6>
 115 <div class="informaltable"><table class="table">
 116 <colgroup>
 117 <col>
 118 <col>
 119 <col>
 120 </colgroup>
 121 <thead><tr>
 122 <th>
 123                     <p>
 124                       Function
 125                     </p>
 126                   </th>
 127 <th>
 128                     <p>
 129                       Description
 130                     </p>
 131                   </th>
 132 <th>
 133                     <p>
 134                       Parameters
 135                     </p>
 136                   </th>
 137 </tr></thead>
 138 <tbody>
 139 <tr>
 140 <td>
 141                     <p>
 142 </p>
 143 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">svg_mapper</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">ostream</span> <span class="special">&amp;</span> <span class="identifier">stream</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">width</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">height</span><span class="special">,</span>
 144             <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">width_height</span> <span class="special">=</span> <span class="string">"width=\"100%\" height=\"100%\""</span><span class="special">)</span></pre>
 145 <p>
 146                     </p>
 147                   </td>
 148 <td>
 149                     <p>
 150                       Constructor, initializing the SVG map. Opens and initializes
 151                       the SVG. Should be called explicitly.
 152                     </p>
 153                   </td>
 154 <td>
 155                     <p>
 156                       <span class="bold"><strong>std::ostream &amp;</strong></span>: <span class="emphasis"><em>stream</em></span>:
 157                       Output stream, should be a stream already open
 158                     </p>
 159                     <p>
 160                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>width</em></span>:
 161                       Width of the SVG map (in SVG pixels)
 162                     </p>
 163                     <p>
 164                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>height</em></span>:
 165                       Height of the SVG map (in SVG pixels)
 166                     </p>
 167                     <p>
 168                       <span class="bold"><strong>std::string const &amp;</strong></span>:
 169                       <span class="emphasis"><em>width_height</em></span>: Optional information to
 170                       increase width and/or height
 171                     </p>
 172                   </td>
 173 </tr>
 174 <tr>
 175 <td>
 176                     <p>
 177 </p>
 178 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="special">~</span><span class="identifier">svg_mapper</span><span class="special">()</span></pre>
 179 <p>
 180                     </p>
 181                   </td>
 182 <td>
 183                     <p>
 184                       Destructor, called automatically. Closes the SVG by streaming
 185                       &lt;/svg&gt;
 186                     </p>
 187                   </td>
 188 <td>
 189                   </td>
 190 </tr>
 191 </tbody>
 192 </table></div>
 193 <h6>
 194 <a name="geometry.reference.io.svg.svg_mapper.h3"></a>
 195             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.member_function_s_"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.member_function_s_">Member
 196             Function(s)</a>
 197           </h6>
 198 <div class="informaltable"><table class="table">
 199 <colgroup>
 200 <col>
 201 <col>
 202 <col>
 203 <col>
 204 </colgroup>
 205 <thead><tr>
 206 <th>
 207                     <p>
 208                       Function
 209                     </p>
 210                   </th>
 211 <th>
 212                     <p>
 213                       Description
 214                     </p>
 215                   </th>
 216 <th>
 217                     <p>
 218                       Parameters
 219                     </p>
 220                   </th>
 221 <th>
 222                     <p>
 223                       Returns
 224                     </p>
 225                   </th>
 226 </tr></thead>
 227 <tbody>
 228 <tr>
 229 <td>
 230                     <p>
 231 </p>
 232 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Geometry</span><span class="special">&gt;</span>
 233 <span class="keyword">void</span> <span class="identifier">add</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">geometry</span><span class="special">)</span></pre>
 234 <p>
 235                     </p>
 236                   </td>
 237 <td>
 238                     <p>
 239                       Adds a geometry to the transformation matrix. After doing this,
 240                       the specified geometry can be mapped fully into the SVG map.
 241                     </p>
 242                   </td>
 243 <td>
 244                     <p>
 245                       <span class="bold"><strong>Geometry const &amp;</strong></span>: <span class="emphasis"><em>geometry</em></span>:
 246                       A model of the specified concept
 247                     </p>
 248                   </td>
 249 <td>
 250                   </td>
 251 </tr>
 252 <tr>
 253 <td>
 254                     <p>
 255 </p>
 256 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Geometry</span><span class="special">&gt;</span>
 257 <span class="keyword">void</span> <span class="identifier">map</span><span class="special">(</span><span class="identifier">Geometry</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">geometry</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">style</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">size</span> <span class="special">=</span> <span class="special">-</span><span class="number">1</span><span class="special">)</span></pre>
 258 <p>
 259                     </p>
 260                   </td>
 261 <td>
 262                     <p>
 263                       Maps a geometry into the SVG map using the specified style.
 264                     </p>
 265                   </td>
 266 <td>
 267                     <p>
 268                       <span class="bold"><strong>Geometry const &amp;</strong></span>: <span class="emphasis"><em>geometry</em></span>:
 269                       A model of the specified concept
 270                     </p>
 271                     <p>
 272                       <span class="bold"><strong>std::string const &amp;</strong></span>:
 273                       <span class="emphasis"><em>style</em></span>: String containing verbatim SVG
 274                       style information
 275                     </p>
 276                     <p>
 277                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>size</em></span>:
 278                       Optional size (used for SVG points) in SVG pixels. For linestrings,
 279                       specify linewidth in the SVG style information
 280                     </p>
 281                   </td>
 282 <td>
 283                   </td>
 284 </tr>
 285 <tr>
 286 <td>
 287                     <p>
 288 </p>
 289 <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">TextPoint</span><span class="special">&gt;</span>
 290 <span class="keyword">void</span> <span class="identifier">text</span><span class="special">(</span><span class="identifier">TextPoint</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">point</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">style</span><span class="special">,</span>
 291           <span class="keyword">int</span> <span class="identifier">offset_x</span> <span class="special">=</span> <span class="number">0</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">offset_y</span> <span class="special">=</span> <span class="number">0</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">lineheight</span> <span class="special">=</span> <span class="number">10</span><span class="special">)</span></pre>
 292 <p>
 293                     </p>
 294                   </td>
 295 <td>
 296                     <p>
 297                       Adds a text to the SVG map.
 298                     </p>
 299                   </td>
 300 <td>
 301                     <p>
 302                       <span class="bold"><strong>TextPoint const &amp;</strong></span>: <span class="emphasis"><em>point</em></span>:
 303                       Location of the text (in map units)
 304                     </p>
 305                     <p>
 306                       <span class="bold"><strong>std::string const &amp;</strong></span>:
 307                       <span class="emphasis"><em>s</em></span>: The text itself
 308                     </p>
 309                     <p>
 310                       <span class="bold"><strong>std::string const &amp;</strong></span>:
 311                       <span class="emphasis"><em>style</em></span>: String containing verbatim SVG
 312                       style information, of the text
 313                     </p>
 314                     <p>
 315                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>offset_x</em></span>:
 316                       Offset in SVG pixels, defaults to 0
 317                     </p>
 318                     <p>
 319                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>offset_y</em></span>:
 320                       Offset in SVG pixels, defaults to 0
 321                     </p>
 322                     <p>
 323                       <span class="bold"><strong>int</strong></span>: <span class="emphasis"><em>lineheight</em></span>:
 324                       Line height in SVG pixels, in case the text contains
 325                     </p>
 326                   </td>
 327 <td>
 328                   </td>
 329 </tr>
 330 </tbody>
 331 </table></div>
 332 <h6>
 333 <a name="geometry.reference.io.svg.svg_mapper.h4"></a>
 334             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.header"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.header">Header</a>
 335           </h6>
 336 <p>
 337             Either
 338           </p>
 339 <p>
 340             <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span></code>
 341           </p>
 342 <p>
 343             Or
 344           </p>
 345 <p>
 346             <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">io</span><span class="special">/</span><span class="identifier">svg</span><span class="special">/</span><span class="identifier">svg_mapper</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
 347           </p>
 348 <h6>
 349 <a name="geometry.reference.io.svg.svg_mapper.h5"></a>
 350             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.example"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.example">Example</a>
 351           </h6>
 352 <p>
 353             Shows the usage of svg_mapper
 354           </p>
 355 <p>
 356 </p>
 357 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
 358 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">fstream</span><span class="special">&gt;</span>
 359
 360 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
 361 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
 362 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
 363
 364 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
 365 <span class="special">{</span>
 366     <span class="comment">// Specify the basic type</span>
 367     <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">&lt;</span><span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">point_type</span><span class="special">;</span>
 368
 369     <span class="comment">// Declare some geometries and set their values</span>
 370     <span class="identifier">point_type</span> <span class="identifier">a</span><span class="special">;</span>
 371     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">assign_values</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span> <span class="number">3</span><span class="special">,</span> <span class="number">6</span><span class="special">);</span>
 372
 373     <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">&lt;</span><span class="identifier">point_type</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">;</span>
 374     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">read_wkt</span><span class="special">(</span><span class="string">"POLYGON((0 0,0 7,4 2,2 0,0 0))"</span><span class="special">,</span> <span class="identifier">b</span><span class="special">);</span>
 375
 376     <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">linestring</span><span class="special">&lt;</span><span class="identifier">point_type</span><span class="special">&gt;</span> <span class="identifier">c</span><span class="special">;</span>
 377     <span class="identifier">c</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point_type</span><span class="special">(</span><span class="number">3</span><span class="special">,</span> <span class="number">4</span><span class="special">));</span>
 378     <span class="identifier">c</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">point_type</span><span class="special">(</span><span class="number">4</span><span class="special">,</span> <span class="number">5</span><span class="special">));</span>
 379
 380     <span class="comment">// Declare a stream and an SVG mapper</span>
 381     <span class="identifier">std</span><span class="special">::</span><span class="identifier">ofstream</span> <span class="identifier">svg</span><span class="special">(</span><span class="string">"my_map.svg"</span><span class="special">);</span>
 382     <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">svg_mapper</span><span class="special">&lt;</span><span class="identifier">point_type</span><span class="special">&gt;</span> <span class="identifier">mapper</span><span class="special">(</span><span class="identifier">svg</span><span class="special">,</span> <span class="number">400</span><span class="special">,</span> <span class="number">400</span><span class="special">);</span>
 383
 384     <span class="comment">// Add geometries such that all these geometries fit on the map</span>
 385     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">add</span><span class="special">(</span><span class="identifier">a</span><span class="special">);</span>
 386     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">add</span><span class="special">(</span><span class="identifier">b</span><span class="special">);</span>
 387     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">add</span><span class="special">(</span><span class="identifier">c</span><span class="special">);</span>
 388
 389     <span class="comment">// Draw the geometries on the SVG map, using a specific SVG style</span>
 390     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span> <span class="string">"fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:2"</span><span class="special">,</span> <span class="number">5</span><span class="special">);</span>
 391     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">b</span><span class="special">,</span> <span class="string">"fill-opacity:0.3;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:2"</span><span class="special">);</span>
 392     <span class="identifier">mapper</span><span class="special">.</span><span class="identifier">map</span><span class="special">(</span><span class="identifier">c</span><span class="special">,</span> <span class="string">"opacity:0.4;fill:none;stroke:rgb(212,0,0);stroke-width:5"</span><span class="special">);</span>
 393
 394     <span class="comment">// Destructor of map will be called - adding &lt;/svg&gt;</span>
 395     <span class="comment">// Destructor of stream will be called, closing the file</span>
 396
 397     <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
 398 <span class="special">}</span>
 399 </pre>
 400 <p>
 401           </p>
 402 <p>
 403             Output:
 404           </p>
 405 <p>
 406             <span class="inlinemediaobject"><img src="../../../../img/io/svg_mapper.png" alt="svg_mapper"></span>
 407           </p>
 408 <h6>
 409 <a name="geometry.reference.io.svg.svg_mapper.h6"></a>
 410             <span class="phrase"><a name="geometry.reference.io.svg.svg_mapper.see_also"></a></span><a class="link" href="svg_mapper.html#geometry.reference.io.svg.svg_mapper.see_also">See
 411             also</a>
 412           </h6>
 413 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
 414                 <a class="link" href="svg.html" title="svg">The SVG manipulator</a>
 415               </li></ul></div>
 416 </div>
 417 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 418 <td align="left"></td>
 419 <td align="right"><div class="copyright-footer">Copyright &#169; 2009-2014 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam
 420       Wulkiewicz, Oracle and/or its affiliates<p>
 421         Distributed under the Boost Software License, Version 1.0. (See accompanying
 422         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>)
 423       </p>
 424 </div></td>
 425 </tr></table>
 426 <hr>
 427 <div class="spirit-nav">
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