kdTree.hpp

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#pragma once
 
#include "nanoflann.hpp"
#include "utils/constants.hpp"
#include "uvgutils/utils.hpp"
 
using namespace uvgvpcc_enc;
 
using nanoflannAdaptorType =
    KDTreeVectorOfVectorsAdaptor<std::vector<uvgutils::VectorN<typeGeometryInput, 3>>, double, 3, nanoflann::metric_L2_Simple, size_t>;
 
class KdTree {
   public:
    KdTree(const size_t& kdTreeMaxLeafSize, const std::vector<uvgutils::VectorN<typeGeometryInput, 3>>& pointsGeometry);
    void knn(const uvgutils::VectorN<typeGeometryInput, 3>& queryPoint, const size_t nnCount, std::vector<size_t>& nnIndices) const;
    void knnDist(const uvgutils::VectorN<typeGeometryInput, 3>& queryPoint, const size_t nnCount, std::vector<int16_t>& out_dists_sqr) const;
 
    /*void knnRadius(const uvgutils::VectorN<typeGeometryInput, 3>& queryPoint, const int16_t maxNNCount, const uint16_t radius,
                    std::vector<size_t>& nnIndices) const;*/
 
   private:
    std::unique_ptr<nanoflannAdaptorType> const index_;
};