using System.Collections.Generic;
using UnityEngine;
using System;

namespace DbscanImplementation
{
    public class Dbscan
    {
        public static DbscanResult<Vector2> Run(List<Vector2> features, Func<Vector2, Vector2, double> metricFunc, double epsilon, int minimumPoints)
        {
            var simpleDbscan = new DbscanAlgorithm<Vector2>(metricFunc);

            return simpleDbscan.ComputeClusterDbscan(allPoints: features.ToArray(),
                epsilon: epsilon, minimumPoints: minimumPoints);

            //Console.WriteLine($"Noise: {result.Noise.Count}");
            //Console.WriteLine($"# of Clusters: {result.Clusters.Count}");
        }

        /// <summary>
        /// Example distance function
        /// </summary>
        /// <param name="feature1"></param>
        /// <param name="feature2"></param>
        /// <returns></returns>
        private static double ExampleDistanceFunction(Vector2 feature1, Vector2 feature2)
        {
            return Mathf.Sqrt(
                    ((feature1.x - feature2.x) * (feature1.x - feature2.x)) +
                    ((feature1.y - feature2.y) * (feature1.y - feature2.y))
                );
        }
    }


}