// Creates a collection of randomly colored nodes.
private ObservableCollection <SimpleData> GenerateNodes()
{
var nodeSource = new ObservableCollection <SimpleData>();
int minNodes = 20;
int maxNodes = 50;
int numberOfNodes = rand.Next(minNodes, maxNodes + 1);
for (int i = 0; i < numberOfNodes; i++)
{
nodeSource.Add(new SimpleData()
{
Key = "Node" + i.ToString(),
Color = String.Format("#{0:X}{1:X}{2:X}", 120 + rand.Next(100), 120 + rand.Next(100), 120 + rand.Next(100))
});
}
// Randomize the nodes a little:
for (int i = 0; i < nodeSource.Count; i++)
{
int swap = rand.Next(0, nodeSource.Count);
SimpleData temp = nodeSource[swap];
nodeSource[swap] = nodeSource[i];
nodeSource[i] = temp;
}
return(nodeSource);
}
// Takes the random collection of nodes and creates a random tree with them.
private ObservableCollection <LinkData> GenerateLinks(ObservableCollection <SimpleData> nodes)
{
var linkSource = new ObservableCollection <LinkData>();
if (nodes.Count == 0)
{
return(linkSource);
}
int minLinks = 2;
int maxLinks = 4;
List <SimpleData> available = nodes.ToList <SimpleData>();
foreach (SimpleData next in nodes)
{
available.Remove(next);
int children = rand.Next(minLinks, maxLinks + 1);
for (int i = 1; i <= children; i++)
{
if (available.Count == 0)
{
break;
}
SimpleData to = available[0];
available.Remove(to);
linkSource.Add(new LinkData()
{
From = next.Key, To = to.Key
});
}
}
return(linkSource);
}