ColorGlove.Filter.NearestColor C# (CSharp) Method

        private static byte NearestColor (byte[] point, ProcessorState state)
        {
            // In place rewriting of the array
            //if (nearest_cache.ContainsKey(point))
            Tuple<byte, byte, byte> t = new Tuple<byte, byte, byte>(point[0], point[1], point[2]);
            if (state.nearest_cache_.ContainsKey(t))
            {
                //Console.WriteLine("Actually matching.");
                Array.Copy(state.label_color_[state.nearest_cache_[t]], point, 3);
                return state.nearest_cache_[t]; // should return the label
            }

            //int minIdx = 0;
            double minDistance = 1000000;
            byte minColorLabel = state.kBackgroundLabel;

            lock (state.centroid_colors_)
            {
                for (int idx = 0; idx < state.centroid_colors_.Count; idx++)
                {
                    double distance = Util.EuclideanDistance(point, state.centroid_colors_[idx]);
                    if (distance < minDistance)
                    {
                        minColorLabel = state.centroid_labels_[idx];
                        minDistance = distance;
                    }
                }
            }

            state.nearest_cache_.Add(new Tuple<byte, byte, byte>(point[0], point[1], point[2]),
                minColorLabel);


            //Console.WriteLine(nearest_cache.Count());
            Array.Copy(state.label_color_[minColorLabel], point, 3);
            return minColorLabel;
        }