public KMean(KMean obj)
{
this.Clusters.AddRange(obj.Clusters);
}
protected void Button1_Click(object sender, EventArgs e)
{
Panel = Session["myObj"] as KMean;
if (Session["update"].ToString() == ViewState["update"].ToString())
{
List<point> p = new List<point>();
List<point> c = new List<point>();
List<int[]> colors = new List<int[]>();
Random r = new Random();
point tmpPoint; //to set points
string rgb; //to set colors
for (int i = 0; i < int.Parse(TextBox1.Text); i++)
{
//set N points
tmpPoint.x = r.Next(1, 600);
tmpPoint.y = r.Next(1, 600);
//change on .aspx file
points.InnerHtml += "<circle cx=" + tmpPoint.x.ToString() + " cy=" + tmpPoint.y.ToString() + " r='5'></circle>";
//add to tmp list --> List<point> p = new List<point>();
p.Add(tmpPoint);
// generate Centroid point
if (i < int.Parse(TextBox2.Text))
{
//set M centroids
tmpPoint.x = r.Next(1, 600);
tmpPoint.y = r.Next(1, 600);
int[] tmpcolor = new int[3];
tmpcolor[0] = r.Next(1, 255);
tmpcolor[1] = r.Next(1, 255);
tmpcolor[2] = r.Next(1, 255);
rgb = "fill:rgb(" + tmpcolor[0] + "," + tmpcolor[1] + "," + tmpcolor[2] + ");"; // choose randomly color for centroids
colors.Add(tmpcolor);
// change div on aspx file
centroids.InnerHtml += "<circle cx=" + tmpPoint.x.ToString() + " cy=" + tmpPoint.y.ToString() + " r='10.0' style=" + rgb + "></circle>";
//add to tmp list --> List<point> c = new List<point>();
c.Add(tmpPoint);
}
}
Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString());
Panel.fillClusters(p, c, colors);
Session["myObj"] = Panel;
}
else
{
points.InnerHtml = "";
centroids.InnerHtml = "";
}
}
protected void Button2_Click(object sender, EventArgs e)
{
Panel = Session["myObj"] as KMean;
if (Session["update"].ToString() == ViewState["update"].ToString())
{
Panel.reCalculateCluster();
centroids.InnerHtml = "";
points.InnerHtml = "";
//redraw new centroids
for (int i = 0; i < Panel.Clusters.Count; i++)
{
string rgb = "fill:rgb(" + Panel.Clusters[i].color[0] + "," + Panel.Clusters[i].color[1] + "," + Panel.Clusters[i].color[2] + ");"; // choose randomly color for centroids
centroids.InnerHtml += "<circle cx=" + Panel.Clusters[i].p.x.ToString() + " cy=" + Panel.Clusters[i].p.y.ToString() + " r='10.0' style=" + rgb + "></circle>";
//color every point depends on its cluster color
for (int j = 0; j < Panel.Clusters[i].clusterPoints.Count; j++)
{
points.InnerHtml += "<circle cx=" + Panel.Clusters[i].clusterPoints[j].x.ToString() + " cy=" + Panel.Clusters[i].clusterPoints[j].y.ToString() + " r='5.0' style=" + rgb + "></circle>";
}
}
}
else
{
Response.Write("<script>alert('Enter Points and Centroids First !!')</script>");
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) // If page loads for first time
{
// Assign the Session["update"] with unique value
Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString());
Session["myObj"] = new KMean();
//page load code
}
}
