\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - 2D Straight Skeleton and Polygon Offsetting

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Groups Pages
Straight_skeleton_2/Show_straight_skeleton.cpp
#include<vector>
#include<iterator>
#include<iostream>
#include<iomanip>
#include<string>
#include <fstream>
#include<boost/shared_ptr.hpp>
#include<CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include<CGAL/Polygon_with_holes_2.h>
#include<CGAL/create_straight_skeleton_from_polygon_with_holes_2.h>
#include "dump_to_eps.h"
typedef CGAL::Exact_predicates_inexact_constructions_kernel K ;
typedef K::Point_2 Point ;
typedef CGAL::Polygon_2<K> Polygon_2 ;
typedef CGAL::Polygon_with_holes_2<K> Polygon_with_holes ;
typedef CGAL::Straight_skeleton_2<K> Straight_skeleton ;
typedef boost::shared_ptr<Straight_skeleton> Straight_skeleton_ptr ;
int main( int argc, char* argv[] )
{
Polygon_with_holes input ;
if ( argc > 1 )
{
std::string name = argv[1] ;
std::cout << "Input file: " << name << std::endl ;
std::ifstream is(name.c_str()) ;
if ( is )
{
is >> input ;
Straight_skeleton_ptr ss = CGAL::create_interior_straight_skeleton_2(input);
if ( ss )
{
std::string eps_name ;
if ( argc > 2 )
eps_name = argv[2];
else eps_name = name + ".skeleton.eps" ;
std::ofstream eps(eps_name.c_str()) ;
if ( eps )
{
std::cerr << "Result: " << eps_name << std::endl ;
dump_to_eps(input,*ss,eps);
}
else
{
std::cerr << "Could not open result file: " << eps_name << std::endl ;
}
}
else
{
std::cerr << "ERROR creating interior straight skeleton" << std::endl ;
}
}
else
{
std::cerr << "Could not open input file: " << name << std::endl ;
}
}
else
{
std::cerr << "Computes the straight skeleton in the interior of a polygon with holes and draws it in an EPS file." << std::endl
<< std::endl
<< "Usage: show_straight_skeleton <intput_file> [output_eps_file]" << std::endl
<< std::endl
<< " intput_file Text file describing the input polygon with holes." << std::endl
<< " (See input_file_format.txt for details)" << std::endl
<< " output_file [default='innput_file.skeleton.eps']" << std::endl ;
}
return 0;
}