ImagickDraw::setStrokeLineJoin()

(PECL imagick 2.0.0)

Specifies the shape to be used at the corners of paths when they are stroked

说明

ImagickDraw::setStrokeLineJoin(int $linejoin): bool

Warning

本函数还未编写文档，仅有参数列表。

Specifies the shape to be used at the corners of paths(or other vector shapes)when they are stroked.

参数

$linejoin

LINEJOIN_ constant

返回值

没有返回值。

范例

Example #1 ImagickDraw::setStrokeLineJoin()

<?php
function setStrokeLineJoin($strokeColor, $fillColor, $backgroundColor) {
    $draw = new \ImagickDraw();
    $draw->setStrokeWidth(1);
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(20);
    $offset = 220;
    $lineJoinStyle = [
        \Imagick::LINEJOIN_MITER,
        \Imagick::LINEJOIN_ROUND,
        \Imagick::LINEJOIN_BEVEL,
        ];
    for ($x = 0; $x < count($lineJoinStyle); $x++) {
        $draw->setStrokeLineJoin($lineJoinStyle[$x]);
        $points = [
            ['x' => 40 * 5, 'y' => 10 * 5 + $x * $offset],
            ['x' => 20 * 5, 'y' => 20 * 5 + $x * $offset],
            ['x' => 70 * 5, 'y' => 50 * 5 + $x * $offset],
            ['x' => 40 * 5, 'y' => 10 * 5 + $x * $offset],
        ];
        $draw->polyline($points);
    }
    $image = new \Imagick();
    $image->newImage(500, 700, $backgroundColor);
    $image->setImageFormat("png");
    $image->drawImage($draw);
    header("Content-Type: image/png");
    echo $image->getImageBlob();
}
?>

From imagick_helpers.c (pecl release), possible values are:
 LINEJOIN_UNDEFINED
 LINEJOIN_MITER
 LINEJOIN_ROUND
 LINEJOIN_BEVEL

For many (myself included) Rex's note maybe not be blatant enough. The constants are declared for the Imagick class only, so using them requires this syntax: Imagick::LINEJOIN_ constant
Here's an example oh how you might use it:
<?php
$img = new Imagick();
$img->newImage($width, $height, new ImagickPixel('transparent'));
$draw = new ImagickDraw();
$draw->setStrokeLineJoin(Imagick::LINEJOIN_ROUND);
?>
If you're not drawing polylines and are drawing simple lines, also see setStrokeLineCap