public override void Initialize()
{
int numNodes = 50;
int numEdges = 50;
// Initialize, and create a layer for the edges (always underneath the nodes)
PLayer nodeLayer = Canvas.Layer;
PLayer edgeLayer = new PLayer();
Canvas.Root.AddChild(edgeLayer);
Canvas.Camera.AddLayer(0, edgeLayer);
Random rnd = new Random();
// Create some random nodes
// Each node's Tag has an ArrayList used to store associated edges
for (int i = 0; i < numNodes; i++)
{
float x = (float)(ClientSize.Width * rnd.NextDouble());
float y = (float)(ClientSize.Height * rnd.NextDouble());
P3Path node = P3Path.CreateEllipse(x, y, 20, 20);
node.Tag = new ArrayList();
nodeLayer.AddChild(node);
}
// Create some random edges
// Each edge's Tag has an ArrayList used to store associated nodes
for (int i = 0; i < numEdges; i++)
{
int n1 = rnd.Next(numNodes);
int n2 = n1;
while (n2 == n1)
{
n2 = rnd.Next(numNodes); // Make sure we have two distinct nodes.
}
PNode node1 = nodeLayer[n1];
PNode node2 = nodeLayer[n2];
P3Path edge = P3Path.CreateLine((node1.Bounds.Left + node1.Bounds.Right) / 2, (node1.Bounds.Top + node1.Bounds.Bottom) / 2,
(node2.Bounds.Left + node2.Bounds.Right) / 2, (node2.Bounds.Top + node2.Bounds.Bottom) / 2);
((ArrayList)node1.Tag).Add(edge);
((ArrayList)node2.Tag).Add(edge);
edge.Tag = new ArrayList();
((ArrayList)edge.Tag).Add(node1);
((ArrayList)edge.Tag).Add(node2);
edgeLayer.AddChild(edge);
}
// Create event handler to move nodes and update edges
nodeLayer.AddInputEventListener(new NodeDragHandler());
}
protected void CreateLines()
{
// Create a bunch of lines
for (int x = 0; x < 1000; x += 10)
{
P3Path line = P3Path.CreateLine(10, 60, 10 + x, 200);
line.Pen = new Pen(Color.Orange, 0);
canvas.Layer.AddChild(line);
line = P3Path.CreateLine(500, 60, 1000 - x, 200);
line.Pen = new Pen(Color.Purple, 0);
canvas.Layer.AddChild(line);
}
}
