CGAL 6.2 - IO Streams

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Stream_support/read_xml.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
#include <vector>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_3 Point_3;
int main(int argc, char* argv[])
{
std::ifstream in( (argc>1)? argv[1] : "data/cloud.pol");
boost::property_tree::ptree tree;
boost::property_tree::read_xml(in, tree);
std::vector<Point_3> points;
for(boost::property_tree::ptree::value_type& node : tree.get_child("PolySet.Polygon")){
boost::property_tree::ptree subtree = node.second;
if( node.first == "Point" ){
for( boost::property_tree::ptree::value_type const& v : subtree.get_child( "" ) ) {
std::string label = v.first;
if ( label == "<xmlattr>" ) {
Point_3 p(subtree.get<double>( label+".X"),
subtree.get<double>( label+".Y"),
subtree.get<double>( label+".Z"));
points.push_back(p);
}
}
}
}
std::cout << points.size() << " points read"<< std::endl;
return 0;
}
CGAL::Exact_predicates_inexact_constructions_kernel