I want to buffer a linestring and getting some compile errors with boost::geometry::buffer.
I have the code below:
// type definitions
using boost_point = boost::geometry::model::d2::point_xy<double>;
using boost_polygon = boost::geometry::model::polygon<boost_point>;
using boost_multipolygon = boost::geometry::model::multi_polygon<boost_polygon>;
// buffer configurations
const double buffer_distance = 0.5;
const int points_per_circle = 10;
boost::geometry::strategy::buffer::distance_symmetric<double> distance_strategy(buffer_distance);
boost::geometry::strategy::buffer::join_round join_strategy(points_per_circle);
boost::geometry::strategy::buffer::end_round end_strategy(points_per_circle);
boost::geometry::strategy::buffer::point_circle circle_strategy(points_per_circle);
boost::geometry::strategy::buffer::side_straight side_strategy;
// convert 3d polyline to 2d polyline then to boost linestring
std::vector<Eigen::Vector3d> polyline_3d = get_polyline_3d();
std::vector<boost_point> polyline_2d = polyline_3d |
ranges::view::transform([](const Eigen::Vector3d &point){return point.head<2>();}) |
ranges::view::transform([](const Eigen::Vector2d &point){return boost::geometry::make<boost_point>(point[0], point[1]);}) |
ranges::to<std::vector<boost_point>>();
auto ls = boost::geometry::model::linestring<boost_point>(polyline_2d.begin(),polyline_2d.end());
// get a buffered multipolygon from linestring
boost_multipolygon buffered;
boost::geometry::buffer(ls, buffered, distance_strategy, side_strategy, join_strategy, end_strategy, circle_strategy);
I'm getting the following compile errors:
boost/geometry/strategies/distance.hpp:97:5: error: no matching function for call to 'assertion_failed<false>(mpl_::failed************ (boost::geometry::strategy::distance::services::default_strategy<boost::geometry::point_tag, boost::geometry::segment_tag, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag, void>::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE_COMBINATION::************)(mpl_::assert_::types<boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag>))'
BOOST_MPL_ASSERT_MSG
boost/geometry/algorithms/detail/buffer/buffer_inserter.hpp:71:13: error: no type named 'type' in 'struct boost::geometry::strategy::distance::services::default_strategy<boost::geometry::point_tag, boost::geometry::segment_tag, boost::geometry::model::d2::point_xy<double>, boost::geometry::model::d2::point_xy<double>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag, void>'
>::type ds_strategy_type;
^~~~~~~~~~~~~~~~
boost/geometry/algorithms/detail/buffer/buffer_inserter.hpp:75:7: error: no type named 'type' in 'struct boost::geometry::strategy::distance::services::default_strategy<boost::geometry::point_tag, boost::geometry::segment_tag, boost::geometry::model::d2::point_xy<double>, boost::geometry::model::d2::point_xy<double>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag, void>'
> strategy_type;
^~~~~~~~~~~~~
boost/geometry/strategies/distance.hpp:97:5: error: no matching function for call to 'assertion_failed<false>(mpl_::failed************ (boost::geometry::strategy::distance::services::default_strategy<boost::geometry::point_tag, boost::geometry::segment_tag, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag, void>::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE_COMBINATION::************)(mpl_::assert_::types<boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::cartesian_tag, boost::geometry::cartesian_tag>))'
BOOST_MPL_ASSERT_MSG
boost/geometry/strategies/comparable_distance_result.hpp:51:8: error: no type named 'type' in 'struct boost::geometry::detail::distance::default_strategy<boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, boost::geometry::model::referring_segment<const boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian> >, boost::geometry::pointlike_tag, boost::geometry::segment_tag, false>'
boost/geometry/algorithms/detail/buffer/buffered_piece_collection.hpp:884:48: error: no matching function for call to 'comparable_distance(boost::geometry::detail::buffer::buffered_piece_collection<boost::geometry::model::ring<boost::geometry::model::d2::point_xy<double>, true, true, std::vector, std::allocator>, boost::geometry::strategy::intersection::cartesian_segments<>, boost::geometry::detail::robust_policy<boost::geometry::model::d2::point_xy<double>, boost::geometry::model::point<long long int, 2, boost::geometry::cs::cartesian>, double> >::robust_point_type&, robust_segment_type&)'
I think my usage of buffer is pretty basic, and I'm confused why this would be causing so many compile errors. Am I missing something here?
I cannot reproduce this:
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
#include <boost/geometry/geometries/multi_polygon.hpp>
#include <range/v3/all.hpp>
#include <Eigen/Eigen>
namespace bg = boost::geometry;
// type definitions
using boost_point = bg::model::d2::point_xy<double>;
using boost_polygon = bg::model::polygon<boost_point>;
using boost_multipolygon = bg::model::multi_polygon<boost_polygon>;
std::vector<Eigen::Vector3d> get_polyline_3d() { return {}; }
int main()
{
using ranges::views::transform;
// convert 3d polyline to 2d polyline then to boost linestring
std::vector<Eigen::Vector3d> polyline_3d = get_polyline_3d();
std::vector<boost_point> polyline_2d =
polyline_3d //
| transform([](const Eigen::Vector3d& point) { return point.head<2>(); }) //
| transform([](const Eigen::Vector2d& point) { return bg::make<boost_point>(point[0], point[1]); }) //
| ranges::to<std::vector<boost_point>>();
auto ls = bg::model::linestring<boost_point>(polyline_2d.begin(),
polyline_2d.end());
// get a buffered multipolygon from linestring
boost_multipolygon buffered;
{
// buffer configurations
const double buffer_distance = 0.5;
const int points_per_circle = 10;
namespace bs = bg::strategy::buffer;
bs::distance_symmetric<double> distance_strategy(buffer_distance);
bs::join_round join_strategy(points_per_circle);
bs::end_round end_strategy(points_per_circle);
bs::point_circle circle_strategy(points_per_circle);
bs::side_straight side_strategy;
bg::buffer(ls, buffered, distance_strategy, side_strategy, join_strategy,
end_strategy, circle_strategy);
}
}
Which compiles fine for me on my GCC 10, Boost 1.78, Eigen 3.3.4, Rangev3 (0.11.0-44-g81b6d3f1b). Perhaps you were missing an include?