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    ImagickDraw::pathLineToRelative

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::pathLineToRelative — 直線パスを描画する

    説明

    public ImagickDraw::pathLineToRelative(float $x, float $y): bool
    警告

    この関数は、 現在のところ詳細な情報はありません。引数のリストのみが 記述されています。

    現在の点から指定した座標まで、相対座標を使用して直線を描画します。 座標は新しい点に移動します。

    パラメータ

    x

    始点の x 座標。

    y

    始点の y 座標。

    戻り値

    値を返しません。

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    User Contributed Notes 1 note

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    Axeia
    15 years ago
    Hope this of help of anything, I had one hell of a time to draw a simple pie slice, where in GD2 is very easily done with the 'arc' function.. this is a bit harder to do in imagick.

    The degrees are a mess, seems like the path, arc and ellipse functions all use a different system.. utterly confusing.
    Code below should at least be of help in understanding how it works.

    For an example of the output, please see:
    http://www.imagebam.com/image/8e0ca432393602
    <?php
    function getPointOnCircumference( $widthOfCircle, $heightOfCircle, $degrees, $x = 0, $y = 0 )
    {
    return array(
    'x' => $x + ($widthOfCircle/2) * sin( deg2rad( $degrees ) ),
    'y' => $y + ($heightOfCircle/2) * cos( deg2rad( $degrees ) )
    );
    }

    $width = 200;
    $height = 200;
    $border = 2;
    $x = $width / 2;
    $y = $height / 2;
    $im = new Imagick();
    $im->newImage( $width, $height, "orange", "png" );


    $draw = new ImagickDraw();
    $draw->setFillColor( 'lime' );
    $draw->setStrokeColor( new ImagickPixel( 'black' ) );
    $draw->setStrokeWidth( 2 );
    $draw->arc( 0, 0, ($width-$border), ($height-$border), 270, 360 ); //270 till 360 degrees
    $im->DrawImage( $draw );

    $draw2 = new ImagickDraw();
    $draw2->setFillColor( 'red' );
    $draw2->setStrokeColor( new ImagickPixel( 'black' ) );
    $draw2->setStrokeWidth( 2 );
    $draw2->ellipse( 100, 100, $x-$border, $y-$border, 0, 90 ); //0 till 90 degrees
    $im->DrawImage( $draw2 );

    $draw3 = new ImagickDraw();
    $draw3->setFillColor( 'navy' );
    $draw3->setStrokeColor( new ImagickPixel( 'white' ) );
    $draw3->setStrokeWidth( 2 );
    $draw3->pathStart();
    $degrees90 = getPointOnCircumference( $width-2*$border,$height-2*$border, 360 );
    $degrees180 = getPointOnCircumference( $width-2*$border,$height-2*$border, 270 );
    $draw3->pathMoveToRelative( $x, $y ); //Move 'pencil' to middle of image.
    $draw3->pathLineToRelative( $degrees90['x'], $degrees90['y'] );
    $draw3->pathEllipticArcRelative( $width-$border, $height-$border, 0, false, true, $degrees180['x'], $degrees180['y']-$y+$border );
    $draw3->pathClose();
    $im->DrawImage( $draw3 );

    header( "Content-Type: image/png" );
    echo     $im;
    ?>
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