Exemplo n.º 1
0
        public bool CalcCenter()
        {
            double  minDispersion = Center.UpdateDispersion(Points);
            KMPoint newCenter     = null;

            foreach (var point in Points)
            {
                if (point == Center)
                {
                    continue;
                }

                double currDispersion = point.UpdateDispersion(Points);

                if (currDispersion < minDispersion)
                {
                    newCenter     = point;
                    minDispersion = currDispersion;
                }
            }

            if (newCenter != null)
            {
                Center = newCenter;
                return(true);
            }

            return(false);
        }
Exemplo n.º 2
0
        private void AddToCluster(KMPoint point)
        {
            double  minDistance = 0;
            Cluster current     = null;

            if (point == null)
            {
                throw new NullReferenceException("point is null");
            }

            foreach (var cluster in _clusters)
            {
                double distance = point.GetDistanceTo(cluster.Center);

                if (current == null || minDistance > distance)
                {
                    minDistance = distance;
                    current     = cluster;
                }
            }

            if (current != null)
            {
                current.AddPoint(point);
            }
        }
Exemplo n.º 3
0
        public void DrawClusters(Graphics graphics, bool drawLine)
        {
            if (graphics == null)
            {
                throw new NullReferenceException("graphics is null");
            }

            foreach (var cluster in _clusters)
            {
                KMPoint center = cluster.Center;

                foreach (var point in cluster.Points)
                {
                    if (point == cluster.Center)
                    {
                        continue;
                    }

                    graphics.DrawLine(cluster.Pen, point.X - 2, point.Y - 2, point.X + 2, point.Y + 2);
                    graphics.DrawLine(cluster.Pen, point.X - 2, point.Y + 2, point.X + 2, point.Y - 2);

                    if (drawLine)
                    {
                        graphics.DrawLine(cluster.Pen, center.X, center.Y, point.X, point.Y);
                    }
                }

                graphics.DrawRectangle(cluster.Pen, center.X - 3, center.Y - 3, 6, 6);
                graphics.FillRectangle(cluster.Brush, center.X - 3, center.Y - 3, 6, 6);
            }
        }
Exemplo n.º 4
0
        public double GetDistanceTo(KMPoint point)
        {
            if (point == null)
            {
                throw new NullReferenceException("point is null");
            }

            return(Math.Sqrt(Math.Pow(Math.Abs(X - point.X), 2) + Math.Pow(Math.Abs(Y - point.Y), 2)));
        }
Exemplo n.º 5
0
        public void AddPoint(KMPoint point)
        {
            if (point == null)
            {
                throw new NullReferenceException("point is null");
            }

            if (point == Center)
            {
                return;
            }

            Points.Add(point);
        }
Exemplo n.º 6
0
        public Cluster(KMPoint center, Color color)
        {
            if (center == null)
            {
                throw new NullReferenceException("center is null");
            }

            if (color == null)
            {
                throw new NullReferenceException("color is null");
            }

            Center = center;
            Pen    = new Pen(color);
            Brush  = new SolidBrush(color);
            Points = new List <KMPoint>();
            Points.Add(center);
        }