/Src/Dependencies/Boost/libs/geometry/doc/src/examples/algorithms/create_svg_overlay.hpp

http://hadesmem.googlecode.com/ · C++ Header · 53 lines · 31 code · 14 blank · 8 comment · 0 complexity · eb5c22bf87940bd60e8db587ad871eac MD5 · raw file 

    

  1. // Boost.Geometry (aka GGL, Generic Geometry Library)
    2. 

  2. 

  3. // Copyright (c) 2011 Barend Gehrels, Amsterdam, the Netherlands.
    4. 

  4. 

  5. // Use, modification and distribution is subject to the Boost Software License,
    6. 

  6. // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    7. 

  7. // http://www.boost.org/LICENSE_1_0.txt)
    8. 

  8. 

  9. // Code to create SVG for examples
    10. 

  10. 

  11. #ifndef CREATE_SVG_OVERLAY_HPP
    12. 

  12. #define CREATE_SVG_OVERLAY_HPP
    13. 

  13. 

  14. #include <fstream>
    15. 

  15. #include <boost/algorithm/string.hpp>
    16. 

  16. 

  17. #if defined(HAVE_SVG)
    18. 

  18. #  include <boost/geometry/extensions/io/svg/svg_mapper.hpp>
    19. 

  19. #endif
    20. 

  20. 

  21. template <typename Geometry, typename Range>
    22. 

  22. void create_svg(std::string const& filename, Geometry const& a, Geometry const& b, Range const& range)
    23. 

  23. {
    24. 

  24. #if defined(HAVE_SVG)
    25. 

  25.     std::cout  << std::endl << "[$img/algorithms/" << boost::replace_all_copy(filename, ".svg", ".png") << "]" << std::endl << std::endl;
    26. 

  26. 

  27.     typedef typename boost::geometry::point_type<Geometry>::type point_type;
    28. 

  28.     std::ofstream svg(filename.c_str());
    29. 

  29. 

  30.     boost::geometry::svg_mapper<point_type> mapper(svg, 400, 400);
    31. 

  31.     mapper.add(a);
    32. 

  32.     mapper.add(b);
    33. 

  33. 

  34.     mapper.map(a, "fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:2");
    35. 

  35.     mapper.map(b, "fill-opacity:0.3;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:2");
    36. 

  36.     int i = 0;
    37. 

  37.     BOOST_FOREACH(Geometry const& g, range)
    38. 

  38.     {
    39. 

  39.         mapper.map(g, "opacity:0.8;fill:none;stroke:rgb(255,128,0);stroke-width:4;stroke-dasharray:1,7;stroke-linecap:round");
    40. 

  40.         std::ostringstream out;
    41. 

  41.         out << i++;
    42. 

  42.         mapper.text(boost::geometry::return_centroid<point_type>(g), out.str(),
    43. 

  43.                     "fill:rgb(0,0,0);font-family:Arial;font-size:10px");
    44. 

  44.     }
    45. 

  45. #endif    
    46. 

  46. }
    47. 

  47. 

  48. // NOTE: convert manually from svg to png using Inkscape ctrl-shift-E
    49. 

  49. // and copy png to html/img/algorithms/
    50. 

  50. 

  51. 

  52. #endif // CREATE_SVG_OVERLAY_HPP
    53.