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38 lines
1.2 KiB
38 lines
1.2 KiB
namespace Mapbox.Unity.MeshGeneration
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{
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using UnityEngine;
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using KDTree;
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using Mapbox.Unity.MeshGeneration.Data;
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using System;
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/// <summary>
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/// KdTree Collection is a feature collection using KdTree mainly for distance based searchs like "find all buildings 100m around
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/// player" or "find 10 closest buildings to this point".
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/// KdTree structures focus on search performance so querying for features will be very fast using this collection. On the other
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/// hand it's not good for dynamic/moving entities but we don't have such features on map so it's one of the best options for maps.
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/// </summary>
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[CreateAssetMenu(menuName = "Mapbox/Feature Collections/Kd Tree Collection")]
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public class KdTreeCollection : FeatureCollectionBase
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{
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private KDTree<VectorEntity> _entities;
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public int Count;
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public override void Initialize()
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{
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base.Initialize();
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_entities = new KDTree.KDTree<VectorEntity>(2);
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}
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public override void AddFeature(double[] position, VectorEntity ve)
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{
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_entities.AddPoint(position, ve);
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Count = _entities.Size;
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}
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public NearestNeighbour<VectorEntity> NearestNeighbors(double[] v, int maxCount, float range)
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{
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return _entities.NearestNeighbors(v, maxCount, range);
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}
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}
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}
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