//Tracé de la légende de cette tranche
$LineY = $ChartDiameter + 20 +
($slice*($ChartFontHeight+2));

imagerectangle($image,
10,
$LineY,
10 + $ChartFontHeight,
$LineY+$ChartFontHeight,
$colorBorder);

imagefilltoborder($image,
12,
$LineY + 2,
$colorBorder,
$CurrentColor);

imagestring($image,
$ChartFont,
20 + $ChartFontHeight,
$LineY,
"$label: $value",
$colorText);

$slice++;
}

/* Renseignements transmis avant l'execution de ce code :
* $ChartData : tableau des données à afficher
* $ChartDiameter : diametre du camembert
* $graph_coord : pour enregistrer le camembert
* $typederesul : pour enregistrer le camembert
*/

//Paramètres du graphique 
$ChartFont = 5;
$ChartFontHeight = imagefontheight($ChartFont);

//Calcul de la taille du graphique 
    $ChartWidth = $ChartDiameter + 20;
    $ChartHeight = $ChartDiameter + 20 +
        (($ChartFontHeight + 2) * count($ChartData));

//Calcul du total de toutes les valeurs 
    $ChartTotal = array_sum($ChartData);

//Calcul du centre du camembert 
    $ChartCenterX = $ChartDiameter/2 + 10;
    $ChartCenterY = $ChartDiameter/2 + 10;
    
//Création de l'image 
    $image = imagecreate($ChartWidth, $ChartHeight);
    //imageantialias($image, TRUE);

//Création d'un pinceau arrondi pour le tracé des bordures
    $dot = imagecreate(3,3);
    $dotColorBlack = imagecolorallocate($dot, 0, 0, 0);
    $dotColorTransparent = imagecolorallocate($dot, 255, 0, 255);
    imagecolortransparent($dot, $dotColorTransparent);
    imagefill($dot, 0, 0, $dotColorTransparent);
    imagefilledellipse($dot, 4, 4, 5, 5, $dotColorBlack);
    imagesetbrush($image, $dot);


//Allocation des couleurs 
    $colorBody = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
    $colorBorder = imagecolorallocate($image, 0x00, 0x00, 0x00);
    $colorText = imagecolorallocate($image, 0x00, 0x00, 0x00);
    $colorSlice = array(

        imagecolorallocate($image, 0x28, 0xD8, 0xA6),
        imagecolorallocate($image, 0x8B, 0xD6, 0xDF),
        imagecolorallocate($image, 0x79, 0x7A, 0xAC),
        imagecolorallocate($image, 0xFF, 0xFF, 0x00),
        imagecolorallocate($image, 0xFF, 0x00, 0xFF),
        imagecolorallocate($image, 0x00, 0xFF, 0xFF),
        imagecolorallocate($image, 0x99, 0x00, 0x00),
        imagecolorallocate($image, 0x00, 0x99, 0x00),
        imagecolorallocate($image, 0x00, 0x00, 0x99),
        imagecolorallocate($image, 0x99, 0x99, 0x00),
        imagecolorallocate($image, 0x99, 0x00, 0x99),
        imagecolorallocate($image, 0x00, 0x99, 0x99));

//Remplissage de l'arrière-plan 
    imagefill($image, 0, 0, $colorBody);


//Tracé de chaque tranche
    $Degrees = 90;
    $slice=0;
    foreach($ChartData as $label=>$value)
    {
        $StartDegrees = round($Degrees);
        $Degrees += (($value/$ChartTotal)*360);
        $EndDegrees = round($Degrees);

        $CurrentColor = $colorSlice[$slice%(count($colorSlice))];

//Tracé des tranches du camembert 
        imagefilledarc(
            $image, 
            $ChartCenterX, $ChartCenterY, 
            $ChartDiameter,$ChartDiameter,
            $StartDegrees, $EndDegrees,
            $CurrentColor, IMG_ARC_PIE);


//Tracé de la légende de cette tranche 
        $LineY = $ChartDiameter + 20 + 
            ($slice*($ChartFontHeight+2));
    
        imagerectangle($image, 
            10, 
            $LineY, 
            10 + $ChartFontHeight, 
            $LineY+$ChartFontHeight, 
            $colorBorder);

        imagefilltoborder($image, 
            12,
            $LineY + 2, 
            $colorBorder,
            $CurrentColor);

        imagestring($image,
            $ChartFont,
            20 + $ChartFontHeight,
            $LineY, 
            "$label: $value",
            $colorText);
        
        $slice++;
    }
    

//Tracé de la bordure 
    imageellipse($image, 
        $ChartCenterX, $ChartCenterY,
        $ChartDiameter,$ChartDiameter,
        IMG_COLOR_BRUSHED);
    
//Envoi de l'image 
$nomduchemin="../graph/".$graph_coord.$typederesul.".png";
imagepng($image,$nomduchemin);
imagedestroy($image);