Re: [Boost-users] [geometry] Boost Geometry Compilation Errors

Subject: Re: [Boost-users] [geometry] Boost Geometry Compilation Errors
From: Barend Gehrels (barend_at_[hidden])
Date: 2013-03-20 07:38:19

Hi Joel,

On 20-3-2013 2:54, Joel Markham wrote:
> Trying to use the boost geometry library.
>
> Have a very simple example from the boost geometry home page

 From which homepage?

>
> int main(int argc, const char * argv[])
> {
> double points[][2] = {{2.0, 1.3}, {4.1, 3.0}, {5.3, 2.6}, {2.9, 0.7}, 
> {2.0, 1.3}};
> bgm::polygon<bgm::d2::point_xy<double> > poly;
> bg::append(poly, points);
> boost::tuple<double, double> p = boost::make_tuple(3.7, 2.0);
> std::cout << "Point p is in polygon? " << std::boolalpha << 
> bg::within(p, poly) << std::endl;
>   ...
> }
>
> When trying to build on my Mac I get compiler warnings:
>
> point_type.hpp
> No matching function for call to 'assertion_failed"
>
> coordinate_type.hpp
> No matching function for call to 'assertion_failed"
>
> convert_point_to_point.hpp
> Call to function 'get that is neither visible in the template 
> definition or found...
>
> access.hpp
> Nom member named 'get in boost::geometry::core_dispatch...
>

Your example is not complete (no headers) so I cannot see what is 
missing here. The complete version below compiles for me. Registration 
of tuples is necessary (to indicate which coordinate system). Same for 
C-Arrays, if append is used like this (it can be done differently too).

Regards, Barend
------------------------

#include <boost/geometry.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
#include <boost/geometry/geometries/polygon.hpp>
#include <boost/geometry/multi/geometries/multi_polygon.hpp>

#include <boost/geometry/geometries/adapted/boost_tuple.hpp>
#include <boost/geometry/geometries/adapted/c_array.hpp>

#include <iostream>

namespace bg = boost::geometry;
namespace bgm = boost::geometry::model;

BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)
BOOST_GEOMETRY_REGISTER_C_ARRAY_CS(cs::cartesian)

int main(int argc, const char * argv[])
{
     double points[][2] = {{2.0, 1.3}, {4.1, 3.0}, {5.3, 2.6}, {2.9, 
0.7}, {2.0, 1.3}};
     bgm::polygon<bgm::d2::point_xy<double> > poly;
     bg::append(poly, points);
     boost::tuple<double, double> p = boost::make_tuple(3.7, 2.0);
     std::cout << "Point p is in polygon? " << std::boolalpha << 
bg::within(p, poly) << std::endl;
     return 0;
}