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    ImagickDraw::bezier

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::bezier — Draws a bezier curve

    Descrizione

    public ImagickDraw::bezier(array $coordinates): bool
    Avviso

    Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

    Draws a bezier curve through a set of points on the image.

    Elenco dei parametri

    coordinates

    Multidimensional array like array( array( 'x' => 1, 'y' => 2 ), array( 'x' => 3, 'y' => 4 ) )

    Valori restituiti

    Nessun valore viene restituito.

    Esempi

    Example #1 ImagickDraw::bezier() example

    <?php
    function bezier($strokeColor, $fillColor, $backgroundColor) {

    $draw = new \ImagickDraw();

    $strokeColor = new \ImagickPixel($strokeColor);
    $fillColor = new \ImagickPixel($fillColor);

    $draw->setStrokeOpacity(1);
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);

    $draw->setStrokeWidth(2);

    $smoothPointsSet = [
    [
    [    'x' => 10.0 * 5, 'y' => 10.0 * 5],
    [    'x' => 30.0 * 5, 'y' => 90.0 * 5],
    [    'x' => 25.0 * 5, 'y' => 10.0 * 5],
    [    'x' => 50.0 * 5, 'y' => 50.0 * 5],
    ],
    [
    [    'x' => 50.0 * 5, 'y' => 50.0 * 5],
    [    'x' => 75.0 * 5, 'y' => 90.0 * 5],
    [    'x' => 70.0 * 5, 'y' => 10.0 * 5],
    [    'x' => 90.0 * 5, 'y' => 40.0 * 5],
    ],
    ];

    foreach (    $smoothPointsSet as $points) {
    $draw->bezier($points);
    }

    $disjointPoints = [
    [
    [    'x' => 10 * 5, 'y' => 10 * 5],
    [    'x' => 30 * 5, 'y' => 90 * 5],
    [    'x' => 25 * 5, 'y' => 10 * 5],
    [    'x' => 50 * 5, 'y' => 50 * 5],
    ],
    [
    [    'x' => 50 * 5, 'y' => 50 * 5],
    [    'x' => 80 * 5, 'y' => 50 * 5],
    [    'x' => 70 * 5, 'y' => 10 * 5],
    [    'x' => 90 * 5, 'y' => 40 * 5],
    ]
    ];
    $draw->translate(0, 200);

    foreach (    $disjointPoints as $points) {
    $draw->bezier($points);
    }

    //Create an image object which the draw commands can be rendered into
    $imagick = new \Imagick();
    $imagick->newImage(500, 500, $backgroundColor);
    $imagick->setImageFormat("png");

    //Render the draw commands in the ImagickDraw object
    //into the image.
    $imagick->drawImage($draw);

    //Send the image to the browser
    header("Content-Type: image/png");
    echo     $imagick->getImageBlob();
    }

    ?>

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    User Contributed Notes 2 notes

    up
    1
    SkepticaLee
    10 years ago
    This function requires at least 3 points. The following code fails when there are only two points left in the array:

    <?php
    $im     = new Imagick ();
    $points = array (array ('x' => 10, 'y' => 10), array ('x' => 20, 'y' => 10), array ('x' => 30, 'y' => 40), array ('x' => 40, 'y' => 20), array ('x' => 50, 'y' => 60));
    $n = 0;
    while (!empty (    $points))
    {
            $im->newImage (64, 64, "white");
            $draw = new ImagickDraw ();
            $draw->setFillColor ("none");
            $draw->setStrokeWidth (4);
            $draw->setStrokeColor ("black");
            $draw->setStrokeOpacity (0.9);
            $draw->setStrokeAntiAlias (true);
            $draw->bezier ($points);
            $im->drawImage ($draw);
            $im->writeImage ("IMG_$n.png");
            $draw->destroy ();
            $im->destroy ();
        echo     count ($points) . ", $n: <img src=\"IMG_$n.png\"><br>";
            $n++;
            array_shift ($points);
    }
    ?>
    up
    0
    zombiebovine at gmail dot com
    15 years ago
    How to use:

    <?php
        $width     =  200;
            $height = 200;
            $border = 2;
       
            $img = new Imagick();
            $img->newImage( $width, $height, new ImagickPixel( 'transparent' ) );
       
            $draw = new ImagickDraw();
            $draw->setStrokeColor( new ImagickPixel( 'black' ) );
            $draw->setStrokeWidth( 2 );
            $draw->setFillColor( new ImagickPixel( 'transparent' ) );

            // will fail in an obscure manner if the input data is invalid
            $points = array
        (
            array(     'x' => 0, 'y' => 200 ),
            array(     'x' => 0, 'y' => 0 ),
            array(     'x' => 200, 'y' => 200 ),
            array(     'x' => 200, 'y' => 0 )
        );
       
            $draw->bezier($points);
               
            $img->drawImage( $draw );
            $img->setImageFormat( "png" );
       
            header( "Content-Type: image/png" );
        echo     $img;
    ?>
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