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    ImagickDraw::affine

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::affine — Adjusts the current affine transformation matrix

    Descrizione

    public ImagickDraw::affine(array $affine): bool
    Avviso

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

    Adjusts the current affine transformation matrix with the specified affine transformation matrix.

    Elenco dei parametri

    affine

    Affine matrix parameters

    Valori restituiti

    Nessun valore viene restituito.

    Esempi

    Example #1 ImagickDraw::affine() example

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

    $draw = new \ImagickDraw();

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

    $draw->setStrokeWidth(2);

    $PI = 3.141592653589794;
    $angle = 60 * $PI / 360;

    //Scale the drawing co-ordinates.
    $affineScale = array("sx" => 1.75, "sy" => 1.75, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

    //Shear the drawing co-ordinates.
    $affineShear = array("sx" => 1, "sy" => 1, "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0);

    //Rotate the drawing co-ordinates. The shear affine matrix
    //produces incorrectly scaled drawings.
    $affineRotate = array("sx" => cos($angle), "sy" => cos($angle), "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0,);

    //Translate (offset) the drawing
    $affineTranslate = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 30, "ty" => 30);

    //The identiy affine matrix
    $affineIdentity = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

    $examples = [$affineScale, $affineShear, $affineRotate, $affineTranslate, $affineIdentity,];

    $count = 0;

    foreach (    $examples as $example) {
    $draw->push();
    $draw->translate(($count % 2) * 250, intval($count / 2) * 250);
    $draw->translate(100, 100);
    $draw->affine($example);
    $draw->rectangle(-50, -50, 50, 50);
    $draw->pop();
    $count++;
    }

    //Create an image object which the draw commands can be rendered into
    $image = new \Imagick();
    $image->newImage(500, 750, $backgroundColor);
    $image->setImageFormat("png");

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

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

    ?>

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