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54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2011 Barend Gehrels, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Code to create SVG for examples
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#ifndef CREATE_SVG_OVERLAY_HPP
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#define CREATE_SVG_OVERLAY_HPP
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#include <fstream>
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#include <boost/algorithm/string.hpp>
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#if defined(HAVE_SVG)
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# include <boost/geometry/extensions/io/svg/svg_mapper.hpp>
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#endif
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template <typename Geometry, typename Range>
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void create_svg(std::string const& filename, Geometry const& a, Geometry const& b, Range const& range)
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{
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#if defined(HAVE_SVG)
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std::cout << std::endl << "[$img/algorithms/" << boost::replace_all_copy(filename, ".svg", ".png") << "]" << std::endl << std::endl;
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typedef typename boost::geometry::point_type<Geometry>::type point_type;
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std::ofstream svg(filename.c_str());
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boost::geometry::svg_mapper<point_type> mapper(svg, 400, 400);
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mapper.add(a);
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mapper.add(b);
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mapper.map(a, "fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:2");
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mapper.map(b, "fill-opacity:0.3;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:2");
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int i = 0;
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BOOST_FOREACH(Geometry const& g, range)
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{
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mapper.map(g, "opacity:0.8;fill:none;stroke:rgb(255,128,0);stroke-width:4;stroke-dasharray:1,7;stroke-linecap:round");
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std::ostringstream out;
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out << i++;
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mapper.text(boost::geometry::return_centroid<point_type>(g), out.str(),
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"fill:rgb(0,0,0);font-family:Arial;font-size:10px");
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}
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#endif
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}
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// NOTE: convert manually from svg to png using Inkscape ctrl-shift-E
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// and copy png to html/img/algorithms/
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#endif // CREATE_SVG_OVERLAY_HPP
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