public ForceDirected(graph g)
{
x = new double[g.N];
y = new double[g.N];
dx = new double[g.N];
dy = new double[g.N];
this.g = g;
GetInitialSolution();
}
public static void Paint(graph g, double[] x, double[] y, int width, int height, string fname)
{
double bx = x.Max();
double ax = x.Min();
double by = y.Max();
double ay = y.Min();
Bitmap bmp = new Bitmap(width, height);
Graphics gr = Graphics.FromImage(bmp);
int border = 10;
width -= border * 2;
height -= border * 2;
double scale = Math.Min((double)width / (bx - ax), height / (by - ay));
SolidBrush bnode = new SolidBrush(Color.White);
Pen pedge = new Pen(Color.Red);
gr.Clear(Color.Black);
int node_rad = 2;
for (int i = 0; i < g.N; i++)
{
int rxi = border + (int)(scale * (x[i] - ax));
int ryi = border + (int)(scale * (y[i] - ay));
foreach (var j in g.Adj(i))
{
int rxj = border + (int)(scale * (x[j] - ax));
int ryj = border + (int)(scale * (y[j] - ay));
gr.DrawLine(pedge, rxi, ryi, rxj, ryj);
}
}
for (int i = 0; i < g.N; i++)
{
int rx = border + (int)(scale * (x[i] - ax));
int ry = border + (int)(scale * (y[i] - ay));
gr.FillEllipse(bnode, rx - node_rad, ry - node_rad, node_rad * 2, node_rad * 2);
}
bmp.Save(fname);
}
public Reducer(graph g)
{
sln.source = g;
sln.map = new Dictionary<int, int>(g.N);
}
