茂之钳
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
#pragma once
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#include "vde/core/aabb.h"
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#include "vde/spatial/spatial_index.h"
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#include <memory>
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namespace vde::spatial {
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using core::Point3D;
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using core::Vector3D;
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using core::Ray3Dd;
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using core::Triangle3D;
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template <typename T> struct OctreeNode;
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template <typename T> struct OctreeData;
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template <typename T>
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class Octree : public SpatialIndex<T> {
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public:
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explicit Octree(int max_depth = 8, int max_items = 16);
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void build(const std::vector<T>& items) override;
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void insert(const T& item) override;
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bool remove(const T& item) override;
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std::vector<T> query_range(const AABB3D& range) const override;
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std::vector<T> query_knn(const Point3D& point, size_t k) const override;
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std::vector<T> query_ray(const Ray3Dd& ray) const override;
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void clear() override;
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size_t size() const override;
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private:
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void insert_recursive(int node_idx, const T& item, int depth);
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void subdivide_recursive(int node_idx, int depth);
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void query_range_recursive(int node_idx, const AABB3D& range,
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std::vector<T>& result) const;
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void query_ray_recursive(int node_idx, const Ray3Dd& ray,
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std::vector<T>& result) const;
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/// Item position helper (for non-Point3D types)
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static Point3D get_position(const T& item);
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std::shared_ptr<OctreeData<T>> data_;
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int max_depth_, max_items_;
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};
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} // namespace vde::spatial
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