如何使用boost ::几何:: rtree with glm :: vec3作为自定义点类型

How to use boost::geometry::rtree with glm::vec3 as a custom point type?

本文关键字：自定义 vec3 类型 with boost 何使用 几何 rtree glm      更新时间：2023-10-16

我正在使用

BOOST_GEOMETRY_REGISTER_POINT_3D(glm::vec3, float, boost::geometry::cs::cartesian, x, y, z);

用rtree定义为：

  using IndexedPoint = std::pair<glm::vec3, uint32_t>;
  using RTree = boost::geometry::index::rtree<IndexedPoint, boost::geometry::index::rstar<8>>;

当我尝试使用此问题运行最近的邻居查询时，它无法编译：

auto it = rtree.qbegin(boost::geometry::index::nearest(glm::vec3(), 3))

错误是：

error C2664: 'int boost::mpl::assertion_failed<false>(boost::mpl::assert<false>::type)': cannot convert argument 1 from 'boost::mpl::failed ************(__cdecl boost::geometry::strategy::distance::services::default_strategy<boost::geometry::point_tag,boost::geometry::box_tag,glm::vec<3,float,0>,boost::geometry::model::point<float,3,boost::geometry::cs::cartesian>,boost::geometry::cartesian_tag,boost::geometry::cartesian_tag,void>::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE_COMBINATION::* ***********)(boost::mpl::assert_::types<Point1,Point2,CsTag1,CsTag2>)' to 'boost::mpl::assert<false>::type'
        with
        [
            Point1=glm::vec<3,float,0>,
            Point2=boost::geometry::model::point<float,3,boost::geometry::cs::cartesian>,
            CsTag1=boost::geometry::cartesian_tag,
            CsTag2=boost::geometry::cartesian_tag
        ]

似乎companable_distance_result缺少VEC3 vs boost :: geomegotry :: model :: point and boost :: gemost :: mode :: model :: box。我尝试过手动添加它们，但无法使其起作用。如何添加所需的距离类型专业？

请注意，我可以将相同的设置用于空间查询，因此基本上是听起来的。

我无法用GCC/BOOST 1.65.1重现问题：

live �Coliru 

#include <boost/geometry.hpp>
#include <boost/geometry/index/rtree.hpp>
#include <boost/geometry/geometries/box.hpp>
#include <boost/geometry/geometries/register/point.hpp>
namespace bg = boost::geometry;
namespace bgi = boost::geometry::index;
#include <glm/vec3.hpp>
BOOST_GEOMETRY_REGISTER_POINT_3D(glm::vec3, float, bg::cs::cartesian, x, y, z)
#include <iostream>
int main() {
    using IndexedPoint = std::pair<glm::vec3, uint32_t>;
    using RTree = boost::geometry::index::rtree<IndexedPoint, boost::geometry::index::rstar<8>>;
    RTree rtree;
    rtree.insert({glm::vec3(1,1,1), 1});
    rtree.insert({glm::vec3(2,2,2), 2});
    rtree.insert({glm::vec3(3,3,3), 3});
    rtree.insert({glm::vec3(4,4,4), 4});
    auto it = rtree.qbegin(bgi::nearest(glm::vec3(2.9, 2.9, 2.9), 99));
    auto p = it->first;
    std::cout << "Nearest: # " << it->second << " (" << p.x << ", " << p.y << " " << p.z << ")n";
}

打印

Nearest: # 3 (3, 3 3)

¹Coliru没有libglm

我只是想从对所接受的答案的评论（@buschnick）的评论中拿出真正解决此问题的答案。

问题是我不包括几何hpp。

添加以下内容包括我的标题解决了上面显示的问题。

#include <boost/geometry.hpp>
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