/** ParentContainer.cpp
 * J Scott Cameron
 *
 * IMplements Container class for the parent window
 * data in the Genetic Images app
 */
#include "ParentContainer.h"

/* constuctor that sets up container with default values */
ParentContainer::ParentContainer(PopulationContainer* PC)
{
	pc = PC;
	mutate = true;
	crossover = false;
	percMutation = 0.01f;
	
	ncs = vector<NodeContainer*>(0);
	
}

/* adds a node to the vector of parents */
void ParentContainer::addNode(NodeContainer* nc)
{
	
	ncs.push_back(nc);
	
}


/* empties parent vector */
void ParentContainer::emptyContainer()
{
	vector<NodeContainer*>::iterator itr;
	
	for(itr = ncs.begin() ; itr != ncs.end() ; itr++)
	{
		(*itr)->~NodeContainer();
	}
	
	ncs.erase(ncs.begin(),ncs.end());
}

/* generates a new population of images */
void ParentContainer::generateNewPopulation()
{
	//	vector<NodeContainer*>::iterator itr;
	int i;
	
	
	
	if(crossover)
	{
		for(i=0;i< pc->P->members();i+=2)
		{   /* kills two old images and replaces them with two new
			 * images generated from randomly chosen parents */
			delete(pc->P->trees[i]);
			delete(pc->P->trees[i+1]);
			pc->P->crossover(randomNode(),
				             randomNode(),
							 &pc->P->trees[i],
							 &pc->P->trees[i+1]);
		}
	}
	else
	{  /* else clone a parent into the new population */
		for(i=0;i<pc->P->members();i++)
		{
			delete(pc->P->trees[i]);
			pc->P->trees[i] = (Binary_Node *)tree_copy(  randomNode(),NULL);
			
		}
	}
	
	if(mutate)
	{  /* mutates the newly generated image*/
		g_mutate = percMutation;
		for(i=0;i<pc->P->members();i++)
		{
			pc->P->mutate(pc->P->trees[i]);
		}
	}
	
	/* generate all the bitmaps for display*/
	pc->UpdateMaps();
}

/* grabs a random image from the parent vector */
Binary_Node* ParentContainer::randomNode()
{
	int i = rand()% ncs.size();
	return (Binary_Node*)ncs[i]->n;
}