IMAGES GENETIQUES

<?php
session_start();

// unset($_SESSION['db']);

class Point{
	public function random(){
		$this->x = ( self::$ox + mt_rand(- self::x_max ,self::x_max) / 5 ) % self::x_max;
		$this->y = ( self::$oy + mt_rand(- self::y_max,self::y_max) / 5 ) % self::y_max;

		self::$ox = $this->x;
		self::$oy = $this->x;
	}
	public function mute(){
		$this->x += mt_rand(-5, 5);
		$this->y += mt_rand(-5, 5);
	}
	const x_max = 200;
	const y_max = 200;
	public $x, $y;
	private static $ox = 0, $oy = 0;
}

class polygone{
	public function __construct(){

	}
	public function getImg($img, $black){
		$c = count($this->array) - 1;
		$fp = null;
		$op = null;
		foreach ($this->array as $p){
			if ($fp === null) {
				$fp = $p;
			}else{
			      imageLine($img, $op->x, $op->y, $p->x, $p->y, $black);
			}
			$op = $p;
		}
		imageLine($img, $fp->x, $fp->y, $op->x, $op->y, $black);
	}
	public function random(){
		$this->array = array();
		$number = mt_rand(3,15);
		for ($i = 0; $i<$number ; $i++){
			$this->array[$i] = new Point();
			$this->array[$i]->random();
		}
	}
	public function mute(){
		if (count($this->array) > 3 && mt_rand(0, 10) < 4 ){
			unset($this->array[mt_rand(0, count($this->array) - 1)]);
		}else{
			$p = $array[] = new Point();
			$p->random();
		}
		foreach ($this->array as $p){
			$p->mute();
		}
	}
	private $array;
}

function cmpimgs(Img $a, Img $b){
	return $a->getNote() - $b->getNote();
}

class Img{
	public function __construct(){
		$this->note = 0;
	}
	public function getHtml(){
		return '<a href="imgs.php?checked='.$this->id.'"><img src="imgs.php?id='.$this->id.'" /> ('.$this->note.') </a>';
	}
	public function getImg(){
		$img = imageCreate(200, 200);
		$white = imageColorAllocate($img, 255, 255, 255);
		$black = imageColorAllocate($img, 0, 0, 0);
		foreach ($this->array as $p){
			$p->getImg($img, $black);
		}
		return $img;
	}
	public function random(){
		$this->array = array();
		$number = mt_rand(2,16);
		for ($i = 0; $i<$number ; $i++){
			$this->array[$i] = new polygone();
			$this->array[$i]->random();
		}
	}
	public function setId($id){
		$this->id = $id;
	}
	public function clicked(ImgDatabase $db, $nbr){
		$imgs = $db->getimgs($nbr);
		usort($imgs, 'cmpimgs');
		$this->note += $nbr;
		foreach ($imgs as $img){
			$img->note --;
		}
		if (mt_rand(0, 10) < 4){
			$db->rem($nbr - 1);
		}else {
			$imgs[$nbr - 1]->accoupler($this);
			if (mt_rand(0, 10) < 4){
				$me = clone $this;
				$me->mute();
				$db->store($me);
			}
			if (mt_rand(0, 10) < 4){
				$m = new Img();
				$m->random();
				$db->store($m);
			}
		}
	}
	private function accoupler(Img $i){
		$this->array = array_merge($this->getRPart(), $i->getRPart());
		$this->note = 0;
	}
	private function mute(){
		unset($this->array[mt_rand(0, count($this->array) - 1)]);
		foreach ($this->array as $p){
			if (mt_rand(0, 10) < 4){
				$p->mute();
			}
		}
	}
	private function getRPart(){
		$c = count($this->array);
		$l = mt_rand(5, $c);
		$f = mt_rand(0, $c - $l);
		return array_slice($this->array, $f, $l);
	}
	public function getNote(){
		return $this->note;
	}
	private $array, $id, $note;
}

class ImgDatabase{
	public function __construct(){
		if (!isset($_SESSION['db'])){
			$_SESSION['db'] = array();
		}
		$this->db = $_SESSION['db'];
	}
	public function __destruct(){
		$_SESSION['db'] = $this->db;
	}
	public function getimgs($n){
		return array_slice($this->db, 0, $n);
	}
	public function store($img){
		$this->db[] = $img;
	}
	public function rem($n){
		unset($this->db[$n]);
		$this->db = array_values($this->db);
	}
	public function get($n){
		$out = array();
		$l = count($this->db);
		for ($i=0;$i<$n && $i < $l;$i++){
			$j = mt_rand($i, $l-1);
			$out[$i] = $this->db[$j];
			$this->db[$j] = $this->db[$i];
			$this->db[$i] = $out[$i];
			$this->db[$i]->setId($i);
			$this->db[$j]->setId($j);
		}
		for ($i=$l;$i<$n;$i++){
			$out[$i] = $this->db[$i] = new Img();
			$out[$i]->random();
			$out[$i]->setId($i);
		}
		return $out;
	}
	public function getById($id){
		return $this->db[$id];
	}
	public function getNbrPic(){
		return count($this->db);
	}
	private $db;
}

$db = new ImgDatabase();
$nbr = 8;

function echopage($db, $nbr){
	$imgs = $db->get($nbr);
	?>
	<table>
	<tr>
	<td><?php echo $imgs[0]->getHTML(); ?></td>
	<td><?php echo $imgs[1]->getHTML(); ?></td>
	<td><?php echo $imgs[2]->getHTML(); ?></td>
	</tr>
	<tr>
	<td><?php echo $imgs[3]->getHTML(); ?></td>
	<td><?php echo $imgs[4]->getHTML(); ?></td>
	<td><?php echo $imgs[5]->getHTML(); ?></td>
	</tr>
	<tr>
	<td><?php echo $imgs[6]->getHTML(); ?></td>
	<td><?php echo $imgs[7]->getHTML(); ?></td>
	<td><p><?php echo $db->getNbrPic(); ?></p></td>
	</tr>
	</table>
	<?php
}

if (isset($_GET['checked'])){
	$img = $db->getById((int) $_GET['checked']);
	$img->clicked($db, $nbr);
	echopage($db, $nbr);
}else if (!isset($_GET['id'])){
	echopage($db, $nbr);
}else{
	$img = $db->getById((int) $_GET['id']);
	$a = $img->getImg();
	imagejpeg($a);
}
?>