/// <summary>
/// Generate Tree structure for chromosome representation
/// </summary>
/// <param name="levels"></param>
/// <returns></returns>
public GPNode GenerateTreeStructure(int levels)
{
//Create the first node
GPNode root = GPNode.NewNode();
root.value = 0;
//Collection holds tree nodes
Queue <GPNode> dataTree = new Queue <GPNode>();
GPNode node = null;
//Add to list and ncrease index
dataTree.Enqueue(root);
while (dataTree.Count > 0)
{
node = dataTree.Dequeue();
int level = node.value;
//Generate Chromosome node value
if (node.value < levels)
{
node.value = Globals.GenerateNodeValue(true);
}
else
{
node.value = Globals.GenerateNodeValue(false);
};
//Node children generatio
if (node.value > 1999)
{
int aritry = functionSet.GetFunctions()[node.value - 2000].Aritry;
//Create children of node
node.children = new GPNode[aritry];
for (int i = 0; i < aritry; i++)
{
GPNode child = GPNode.NewNode();
child.value = level + 1;
node.children[i] = child;
dataTree.Enqueue(node.children[i]);
}
}
}
return(root);
}
/// <summary>
/// Converts treeDrawer in to GPNode
/// </summary>
/// <returns> GPnode tree structure</returns>
public GPNode TreeNodeToGPNode()
{
if (treeCtrlDrawer1.RootNode == null)
{
return(null);
}
//Create list of terminals
FromDirToFuns();
//Collection holds tree nodes
Queue <GPNode> dataTree = new Queue <GPNode>();
Queue <TreeNodeDrawer> ctrls = new Queue <TreeNodeDrawer>();
//current node
GPNode root = GPNode.NewNode();
TreeNodeDrawer treeCtrl = null;
ctrls.Enqueue(treeCtrlDrawer1.RootNode);
dataTree.Enqueue(root);
while (ctrls.Count > 0)
{
//get next node
var node = dataTree.Dequeue();
treeCtrl = ctrls.Dequeue();
node.value = GetNodeValue(treeCtrl.Content);
if (treeCtrl.TreeChildren != null && treeCtrl.TreeChildren.Count > 0)
{
node.children = new GPNode[treeCtrl.TreeChildren.Count];
for (int i = 0; i < treeCtrl.TreeChildren.Count; i++)
{
node.children[i] = GPNode.NewNode();
dataTree.Enqueue(node.children[i]);
ctrls.Enqueue((TreeNodeDrawer)treeCtrl.TreeChildren[i]);
}
}
}
return(root);
}
/// <summary>
/// Converts treeDrawer in to GPNode
/// </summary>
/// <returns> GPnode tree structure</returns>
public GPNode ToGPNode(bool tag = false)
{
if (this.RootNode == null)
{
return(null);
}
//Collection holds tree nodes
Queue <GPNode> dataTree = new Queue <GPNode>();
Queue <TreeNodeDrawer> ctrls = new Queue <TreeNodeDrawer>();
//current node
GPNode root = GPNode.NewNode();
TreeNodeDrawer treeCtrl = null;
ctrls.Enqueue(this.RootNode);
dataTree.Enqueue(root);
while (ctrls.Count > 0)
{
//get next node
var node = dataTree.Dequeue();
treeCtrl = ctrls.Dequeue();
node.value = (int)treeCtrl.Content;
node.marked = tag;
if (treeCtrl.TreeChildren != null && treeCtrl.TreeChildren.Count > 0)
{
node.children = new GPNode[treeCtrl.TreeChildren.Count];
for (int i = 0; i < treeCtrl.TreeChildren.Count; i++)
{
node.children[i] = GPNode.NewNode();
dataTree.Enqueue(node.children[i]);
ctrls.Enqueue((TreeNodeDrawer)treeCtrl.TreeChildren[i]);
}
}
}
return(root);
}
public void Crossover(GPNode ch1, GPNode ch2, int index1, int index2)
{
//We dont want to crossover root
if (index1 == 1 || index2 == 1)
{
throw new Exception("Wrong index number for Crossover operation!");
}
//start counter from 0
int count = 0;
//Collection holds tree nodes
Queue <GPNode> dataTree = new Queue <GPNode>();
GPNode node = null;
//Add tail recursion
dataTree.Enqueue(ch1);
while (dataTree.Count > 0)
{
//get next node
node = dataTree.Dequeue();
//count node
count++;
//when the counter is equel to index return curretn node
if (count == index1)
{
break;
}
if (node.children != null)
{
for (int i = node.children.Length - 1; i >= 0; i--)
{
dataTree.Enqueue(node.children[i]);
}
}
}
var node1 = node;
//Add tail recursion
count = 0;
dataTree.Clear();
dataTree.Enqueue(ch2);
while (dataTree.Count > 0)
{
//get next node
node = dataTree.Dequeue();
//count node
count++;
//when the counter is equel to index return curretn node
if (count == index2)
{
break;
}
if (node.children != null)
{
for (int i = node.children.Length - 1; i >= 0; i--)
{
dataTree.Enqueue(node.children[i]);
}
}
}
//Exchange nodes
GPNode tempNode = GPNode.NewNode();
tempNode.value = node1.value;
if (node1.children != null)
{
tempNode.children = new GPNode[node1.children.Length];
for (int i = 0; i < tempNode.children.Length; i++)
{
tempNode.children[i] = node1.children[i];
}
}
//
node1.value = node.value;
node1.children = null;
if (node.children != null)
{
node1.children = null;
node1.children = new GPNode[node.children.Length];
for (int i = 0; i < node.children.Length; i++)
{
node1.children[i] = node.children[i];
}
}
//
node.value = tempNode.value;
node.children = tempNode.children;
}