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// Boost.Geometry (aka GGL, Generic Geometry Library) // Robustness Test
// Copyright (c) 2013-2015 Barend Gehrels, Amsterdam, the Netherlands.
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// Adapted from: the attachment of ticket 9081
#define CHECK_SELF_INTERSECTIONS
#define LIST_WKT
#include <iomanip>
#include <iostream>
#include <vector>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
#include <boost/geometry/geometries/polygon.hpp>
#include <boost/geometry/geometries/register/point.hpp>
#include <boost/geometry/geometries/register/ring.hpp>
#include <boost/geometry/io/wkt/wkt.hpp>
#include <boost/geometry/geometries/multi_polygon.hpp>
#include <boost/foreach.hpp>
#include <boost/timer.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/geometry/io/svg/svg_mapper.hpp>
#include <fstream>
typedef boost::geometry::model::d2::point_xy<double> pt;
typedef boost::geometry::model::polygon<pt> polygon;
typedef boost::geometry::model::segment<pt> segment;
typedef boost::geometry::model::multi_polygon<polygon> multi_polygon;
template <typename Geometry>
inline void debug_with_svg(int index, char method, Geometry const& a, Geometry const& b, std::string const& headera, std::string const& headerb)
{
multi_polygon output;
try
{
switch(method)
{
case 'i': boost::geometry::intersection(a, b, output); break;
case 'u': boost::geometry::union_(a, b, output); break;
case 'd': boost::geometry::difference(a, b, output); break;
case 'v': boost::geometry::difference(b, a, output); break;
default : return;
}
}
catch(...)
{}
std::ostringstream filename;
filename << "ticket_9081_" << method << "_" << (1000000 + index) << ".svg";
std::ofstream svg(filename.str().c_str());
boost::geometry::svg_mapper<pt> mapper(svg, 400, 400);
mapper.add(a);
mapper.add(b);
mapper.map(a, "fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:2");
mapper.map(b, "fill-opacity:0.3;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:2");
BOOST_FOREACH(polygon const& g, output)
{
mapper.map(g, "opacity:0.8;fill:none;stroke:rgb(255,128,0);stroke-width:4;stroke-dasharray:1,7;stroke-linecap:round");
}
std::ostringstream out;
out << headera << std::endl << headerb;
mapper.map(boost::geometry::return_centroid<pt>(a), "fill:rgb(152,204,0);stroke:rgb(153,204,0);stroke-width:0.1", 3);
mapper.map(boost::geometry::return_centroid<pt>(b), "fill:rgb(51,51,153);stroke:rgb(153,204,0);stroke-width:0.1", 3);
mapper.text(boost::geometry::return_centroid<pt>(a), headera, "fill:rgb(0,0,0);font-family:Arial;font-size:10px");
mapper.text(boost::geometry::return_centroid<pt>(b), headerb, "fill:rgb(0,0,0);font-family:Arial;font-size:10px");
}
int main()
{
int num_orig = 50;
int num_rounds = 30000;
srand(1234);
std::cout << std::setprecision(16);
std::map<int, std::string> genesis;
int pj;
std::string wkt1, wkt2, operation;
try
{
boost::timer t;
std::vector<multi_polygon> poly_list;
for(int i=0;i<num_orig;i++)
{
multi_polygon mp;
polygon p;
for(int j=0;j<3;j++)
{
double x=(double)rand()/RAND_MAX;
double y=(double)rand()/RAND_MAX;
p.outer().push_back(pt(x,y));
}
boost::geometry::correct(p);
mp.push_back(p);
boost::geometry::detail::overlay::has_self_intersections(mp);
std::ostringstream out;
out << "original " << poly_list.size();
genesis[poly_list.size()] = out.str();
poly_list.push_back(mp);
#ifdef LIST_WKT
std::cout << "Original " << i << " " << boost::geometry::wkt(p) << std::endl;
#endif
}
for(int j=0;j<num_rounds;j++)
{
if (j % 100 == 0) { std::cout << " " << j; }
pj = j;
int a = rand() % poly_list.size();
int b = rand() % poly_list.size();
debug_with_svg(j, 'i', poly_list[a], poly_list[b], genesis[a], genesis[b]);
{ std::ostringstream out; out << boost::geometry::wkt(poly_list[a]); wkt1 = out.str(); }
{ std::ostringstream out; out << boost::geometry::wkt(poly_list[b]); wkt2 = out.str(); }
multi_polygon mp_i, mp_u, mp_d, mp_e;
operation = "intersection";
boost::geometry::intersection(poly_list[a],poly_list[b],mp_i);
operation = "intersection";
boost::geometry::union_(poly_list[a],poly_list[b],mp_u);
operation = "difference";
boost::geometry::difference(poly_list[a],poly_list[b],mp_d);
boost::geometry::difference(poly_list[b],poly_list[a],mp_e);
#ifdef LIST_WKT
std::cout << j << std::endl;
std::cout << " Genesis a " << genesis[a] << std::endl;
std::cout << " Genesis b " << genesis[b] << std::endl;
std::cout << " Intersection " << boost::geometry::wkt(mp_i) << std::endl;
std::cout << " Difference a " << boost::geometry::wkt(mp_d) << std::endl;
std::cout << " Difference b " << boost::geometry::wkt(mp_e) << std::endl;
#endif
#ifdef CHECK_SELF_INTERSECTIONS
try
{
boost::geometry::detail::overlay::has_self_intersections(mp_i);
}
catch(...)
{
std::cout << "FAILED TO INTERSECT " << j << std::endl;
std::cout << boost::geometry::wkt(poly_list[a]) << std::endl;
std::cout << boost::geometry::wkt(poly_list[b]) << std::endl;
std::cout << boost::geometry::wkt(mp_i) << std::endl;
try
{
boost::geometry::detail::overlay::has_self_intersections(mp_i);
}
catch(...)
{
}
break;
}
try
{
boost::geometry::detail::overlay::has_self_intersections(mp_d);
}
catch(...)
{
std::cout << "FAILED TO SUBTRACT " << j << std::endl;
std::cout << boost::geometry::wkt(poly_list[a]) << std::endl;
std::cout << boost::geometry::wkt(poly_list[b]) << std::endl;
std::cout << boost::geometry::wkt(mp_d) << std::endl;
break;
}
try
{
boost::geometry::detail::overlay::has_self_intersections(mp_e);
}
catch(...)
{
std::cout << "FAILED TO SUBTRACT " << j << std::endl;
std::cout << boost::geometry::wkt(poly_list[b]) << std::endl;
std::cout << boost::geometry::wkt(poly_list[a]) << std::endl;
std::cout << boost::geometry::wkt(mp_e) << std::endl;
break;
}
#endif
if(boost::geometry::area(mp_i) > 0)
{
std::ostringstream out;
out << j << " intersection(" << genesis[a] << " , " << genesis[b] << ")";
genesis[poly_list.size()] = out.str();
poly_list.push_back(mp_i);
}
if(boost::geometry::area(mp_d) > 0)
{
std::ostringstream out;
out << j << " difference(" << genesis[a] << " - " << genesis[b] << ")";
genesis[poly_list.size()] = out.str();
poly_list.push_back(mp_d);
}
if(boost::geometry::area(mp_e) > 0)
{
std::ostringstream out;
out << j << " difference(" << genesis[b] << " - " << genesis[a] << ")";
genesis[poly_list.size()] = out.str();
poly_list.push_back(mp_e);
}
}
std::cout << "FINISHED " << t.elapsed() << std::endl;
}
catch(std::exception const& e)
{
std::cout << e.what()
<< " in " << operation << " at " << pj << std::endl
<< wkt1 << std::endl
<< wkt2 << std::endl
<< std::endl;
}
catch(...)
{
std::cout << "Other exception" << std::endl;
}
return 0;
}
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