ANTICHAT - Показать сообщение отдельно

Пример 3d капчи..
PHP код:

		
			
<?

$capthca = new Capthca3d(); 

$capthca->render(); 



class Capthca3d{ 

    const CHARS = 'WEafRTYIPAGHJKXBNM3479j'; 

    protected $hypot = 8; 

    protected $image = null; 

     

    protected $text = 'achat'; 

     

    public function __construct() 

    { 

        $this->time = microtime(true); 

        $this->generateCode(); 

     

    } 

    protected function generateCode() 

    { 

        $chars = self::CHARS; 

        for($i =0; $i<5; $i++){ 

            $this->text .= $chars{ mt_rand(0,22)}; 

        } 

    } 

     

    public function getText() 

    { 

        return $this->text; 

    } 

    protected function getProection($x1,$y1,$z1) 

    { 

        $x = $x1 * $this->hypot;  

        $y = $z1 * $this->hypot; 

        $z = -$y1 * $this->hypot; 

         

        $xx = 0.707106781187;  

        $xy = 0; 

        $xz = -0.707106781187;  

         

        $yx = 0.408248290464;  

        $yy = 0.816496580928;  

        $yz = 0.408248290464; 

         

        $cx = $xx*$x + $xy*$y + $xz*$z; 

        $cy = $yx*$x + $yy*$y + $yz*$z+ 20 * $this->hypot; 

        return array( 

            'x' => $cx, 

            'y' => $cy 

            );  

    } 

     

    function zFunction($x,$y){ 

        $z = imagecolorat($this->image,$y/2,$x/2)>0?2.6:0; 

        if( $z != 0 ){ 

            $z += mt_rand(0,60)/100; 

        } 

        $z += 1.4 * sin(($x+$this->startX)*3.141592654/15)*sin(($y+$this->startY)*3.141592654/15); 

        return $z; 

    } 

    public function render()     

    { 

        $xx =30; 

         $yy =60; 

         

         $this->image = imageCreateTrueColor($yy * $this->hypot  , $xx * $this->hypot); 

         

        $whiteColor = imageColorAllocate($this->image,255,255,255); 

        imageFilledRectangle($this->image,0,0,$yy * $this->hypot  , $xx * $this->hypot,$whiteColor); 

         

        $textColor = imageColorAllocate($this->image,0,0,0); 

        imageString($this->image, 5, 3, 0, $this->text, $textColor); 

         

         

         $this->startX = mt_rand(0,$xx);     

         $this->startY = mt_rand(0,$yy); 

         

         $coordinates = array(); 

          

        for($x = 0; $x < $xx + 1; $x++){ 

            for($y = 0; $y < $yy + 1; $y++){ 

                $coordinates[$x][$y] = $this->getProection($x,$y,$this->zFunction($x,$y)); 

             } 

         } 

          

        for($x = 0; $x < $xx; $x++){ 

            for($y = 0; $y < $yy; $y++){ 

                 $coord = array(); 

                 $coord[] = $coordinates[$x][$y]['x']; 

                 $coord[] = $coordinates[$x][$y]['y']; 

                  

                 $coord[] = $coordinates[$x+1][$y]['x']; 

                 $coord[] = $coordinates[$x+1][$y]['y']; 

                  

                 $coord[] = $coordinates[$x+1][$y+1]['x']; 

                 $coord[] = $coordinates[$x+1][$y+1]['y']; 

                  

                 $coord[] = $coordinates[$x][$y+1]['x']; 

                 $coord[] = $coordinates[$x][$y+1]['y']; 

                 

                $c = (int) ($this->zFunction($x,$y)*32); 

                $linesColor = imageColorAllocate($this->image, $c, $c, $c); 

                imageFilledPolygon($this->image, $coord, 4, $whiteColor); 

                imagePolygon($this->image, $coord, 4, $linesColor); 

             } 

         } 

         

        $textColor = imageColorAllocate($this->image,0,0,0); 

        imageString($this->image, 5, 3, 0, $this->text, $whiteColor); 

        imageString($this->image, 1, 3, 0, (microtime(true)-$this->time), $textColor); 

        header('Content-Type: image/png'); 

         

        imagepng($this->image); 

        imagedestroy($this->image); 

    } 

}

?>
KAndy(С)