function image_aplatir($im, $format='jpg', $coul='000000')
{
	$image = valeurs_image_trans($im, "aplatir-$coul", $format);
	if (!$image) return("");

	include_ecrire("filtres");
	$couleurs = couleur_hex_to_dec($coul);
	$dr= $couleurs["red"];
	$dv= $couleurs["green"];
	$db= $couleurs["blue"];
	
	$x_i = $image["largeur"];
	$y_i = $image["hauteur"];
	
	$im = $image["fichier"];
	$dest = $image["fichier_dest"];
	
	$creer = $image["creer"];

	if ($creer) {
		$im = $image["fonction_imagecreatefrom"]($im);
		$im_ = imagecreatetruecolor($x_i, $y_i);
		@imagealphablending($im_, false);
		@imagesavealpha($im_,true);
		$color_t = ImageColorAllocateAlpha( $im_, $dr, $dv, $db , 0 );
		imagefill ($im_, 0, 0, $color_t);

		$dist = abs($trait);
		for ($x = 0; $x < $x_i; $x++) {
			for ($y=0; $y < $y_i; $y++) {
			
				$rgb = ImageColorAt($im, $x, $y);
				$a = ($rgb >> 24) & 0xFF;
				$r = ($rgb >> 16) & 0xFF;
				$g = ($rgb >> 8) & 0xFF;
				$b = $rgb & 0xFF;
				
				$a = (127-$a) / 127;
				
				if ($a == 1) { // Limiter calculs
					$r = $r;
					$g = $g;
					$b = $b;
				} else {
					$r = round($a * $r + $dr * (1-$a));
					$g = round($a * $g + $dv * (1-$a));
					$b = round($a * $b + $db * (1-$a));
				}
								
				$color = ImageColorAllocateAlpha( $im_, $r, $g, $b , 0 );
				imagesetpixel ($im_, $x, $y, $color);	
			}
		}
		$image["fonction_image"]($im_, "$dest");
	}

	$class = $image["class"];
	if (strlen($class) > 1) $tags=" class='$class'";
	$tags = "$tags alt='".$image["alt"]."'";
	$style = $image["style"];
	
	return "<img src='$dest'$tags />";
}