ceph/src/boost/libs/geometry/doc/src/examples/examples_utils/create_svg_buffer.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2014 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // Use, modification and distribution is subject to the Boost Software License,
   6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 // Code to create SVG for buffer examples
  10
  11 #ifndef CREATE_SVG_BUFFER_HPP
  12 #define CREATE_SVG_BUFFER_HPP
  13
  14 #include <fstream>
  15
  16 #if defined(HAVE_SVG)
  17 #  include <boost/geometry/io/svg/svg_mapper.hpp>
  18 #endif
  19
  20 template <typename Geometry1, typename Geometry2>
  21 void create_svg_buffer(std::string const& filename, Geometry1 const& original, Geometry2 const& buffer)
  22 {
  23 #if defined(HAVE_SVG)
  24     typedef typename boost::geometry::point_type<Geometry1>::type point_type;
  25     std::ofstream svg(filename.c_str());
  26
  27     boost::geometry::svg_mapper<point_type> mapper(svg, 400, 400);
  28     mapper.add(original);
  29     mapper.add(buffer);
  30
  31     // Draw buffer at bottom
  32     mapper.map(buffer, "fill-opacity:0.6;fill:rgb(255,255,64);stroke:rgb(255,128,0);stroke-width:3");
  33
  34     // Draw original on top
  35     mapper.map(original, "fill-opacity:0.6;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:2");
  36
  37 #else
  38     boost::ignore_unused_variable_warning(filename);
  39     boost::ignore_unused_variable_warning(original);
  40     boost::ignore_unused_variable_warning(buffer);
  41 #endif
  42 }
  43
  44 // NOTE: convert manually from svg to png using Inkscape ctrl-shift-E
  45 // and copy png to html/img/...
  46
  47
  48 #endif // CREATE_SVG_BUFFER_HPP
  49