ImagickDraw::circle

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::circle — Bir daire çizer

    Açıklama

    public ImagickDraw::circle(
        float $ox,
        float $oy,
        float $px,
        float $py
    ): bool
    Uyarı

    Bu işlev hala belgelendirilmemiştir; sadece bağımsız değişken listesi mevcuttur.

    Görüntünün üzerine bir daire çizer.

    Bağımsız Değişkenler

    ox

    Merkezin X koordinatı.

    oy

    Merkezin Y koordinatı.

    px

    Çember X koordinatı

    py

    Çember Y koordinatı

    Dönen Değerler

    Hiçbir değer dönmez.

    Örnekler

    Örnek 1 - ImagickDraw::circle() örneği

    <?php
    function circle($strokeColor, $fillColor, $backgroundColor, $originX, $originY, $endX, $endY) {

    // İçine çizmek için bir ImagickDraw nesnesi oluştur
    $draw = new \ImagickDraw();

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

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

    $draw->setStrokeWidth(2);
    $draw->setFontSize(72);

    $draw->circle($originX, $originY, $endX, $endY);

    $imagick = new \Imagick();
    $imagick->newImage(500, 500, $backgroundColor);
    $imagick->setImageFormat("png");
    $imagick->drawImage($draw);

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

    ?>

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    User Contributed Notes 1 note

    up
    10
    SkepticaLee
    10 years ago
    The four values required here are a bit confusing. After all, a circle is defined by three values: the x, y coordinates of the centre, and the radius, r.

    The fourth value is redundant, but has to be given, otherwise the function fails. One way of coping with this redundancy is:

    <?php
    $draw     = new ImagickDraw ();
    //given that $x and $y are the coordinates of the centre, and $r the radius:
    $draw->circle ($x, $y, $x + $r, $y);
    ?>

    There are any number of actions which are synonymous with the last, including:
    <?php
    $draw    ->circle ($x, $y, $x, $y + $r);
    $draw->circle ($x, $y, $x - $r, $y);
    $draw->circle ($x, $y, $x, $y - $r);
    // etc, etc.
    ?>

    Hope this helps.
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