public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values.Length < 2)
{
return(null);
}
if (values[0] == null)
{
return(null);
}
ObservableDictionary <GraphNodeVM, Point> nodes = values[0] as ObservableDictionary <GraphNodeVM, Point>;
if (nodes == null)
{
return(null);
}
if (values[1] == null)
{
return(null);
}
GraphNodeVM node = values[1] as GraphNodeVM;
if (node == null)
{
return(null);
}
if (!nodes.ContainsKey(node))
{
return(null);
}
return(nodes[node]);
}
private double Distance(GraphNodeVM n1, GraphNodeVM n2)
{
return(GraphFactory.Distance(
Nodes[n1].X,
Nodes[n1].Y,
Nodes[n2].X,
Nodes[n2].Y));
}
public Point Position(GraphNodeVM node, double rx, double ry, double cx, double cy)
{
int index = graph.Nodes.IndexOf(node);
double angle = ((double)graph.Nodes.IndexOf(node) / graph.Nodes.Count) * (Math.PI * 2);
return(new Point(
cx + Math.Cos(angle) * rx,
cy + Math.Sin(angle) * ry));
}
private Point CalculatePosition(GraphNodeVM node, double margin, double actualWidth, double actualHeight)
{
double width = actualWidth - margin;
double height = actualHeight - margin;
double rx = width / 2;
double ry = height / 2;
double cx = width / 2;
double cy = height / 2;
if (rx < 10)
{
rx = 10; // I just want to see anything, uglynees is not important
}
if (ry < 10)
{
ry = 10; // I just want to see anything, uglynees is not important
}
var newPos = positioner.Position(node, rx, ry, cx, ry);
newPos.X += margin / 2;
newPos.Y += margin / 2;
return(newPos);
}
