/// <summary>
/// Sets up a prototypical GPIndividual with those features which it
/// shares with other GPIndividuals in its species, and nothing more.
/// </summary>
public override void Setup(IEvolutionState state, IParameter paramBase)
{
base.Setup(state, paramBase); // actually unnecessary (Individual.Setup() is empty)
var def = DefaultBase;
// set my evaluation to false
Evaluated = false;
// how many trees?
var t = state.Parameters.GetInt(paramBase.Push(P_NUMTREES), def.Push(P_NUMTREES), 1); // at least 1 tree for GP!
if (t <= 0)
{
state.Output.Fatal("A GPIndividual must have at least one tree.", paramBase.Push(P_NUMTREES), def.Push(P_NUMTREES));
}
// load the trees
Trees = new GPTree[t];
for (var x = 0; x < t; x++)
{
var p = paramBase.Push(P_TREE).Push("" + x);
Trees[x] = (GPTree)(state.Parameters.GetInstanceForParameterEq(p, def.Push(P_TREE).Push("" + x), typeof(GPTree)));
Trees[x].Owner = this;
Trees[x].Setup(state, p);
}
// now that our function sets are all associated with trees,
// give the nodes a chance to determine whether or not this is
// going to work for them (especially the ADFs).
var initializer = ((GPInitializer)state.Initializer);
for (var x = 0; x < t; x++)
{
foreach (var gpfi in Trees[x].Constraints(initializer).FunctionSet.Nodes)
{
foreach (var t1 in gpfi)
{
t1.CheckConstraints(state, x, this, paramBase);
}
}
}
// because I promised with checkConstraints(...)
state.Output.ExitIfErrors();
}
/// <summary>
/// Returns true if I am "genetically" the same as tree, though we may have different owners.
/// </summary>
public virtual bool TreeEquals(GPTree tree)
{
return(Child.RootedTreeEquals(tree.Child));
}
/// <summary>
/// Enumerates filtered GPNodes in the tree starting with the root (tree.Child).
/// Results are filtered by the nodesearch argument (0=All, 1=Terminals, 2=Nonterminals).
/// </summary>
public static IEnumerable <GPNode> Descendants(this GPTree tree, int nodesearch)
{
return(Descendants(tree.Child, nodesearch));
}
/// <summary>
/// Enumerates filtered GPNodes in the tree starting with the root (tree.Child).
/// Results are filtered by the GPNodeGatherer which tests each node to decide
/// if it qualifies.
/// </summary>
public static IEnumerable <GPNode> Descendants(this GPTree tree, GPNodeGatherer gatherer)
{
return(Descendants(tree.Child, gatherer));
}
/// <summary>
/// Enumerates all of the GPNodes in the tree starting with the root (tree.Child).
/// </summary>
public static IEnumerable <GPNode> Descendants(this GPTree tree)
{
return(Descendants(tree.Child));
}
