ImagickDraw::polyline

(PECL imagick 2, PECL imagick 3)

ImagickDraw::polyline — Draws a polyline

说明

public function ImagickDraw::polyline(array $coordinates): bool

警告

本函数还未编写文档，仅有参数列表。

Draws a polyline using the current stroke, stroke width, and fill color or texture, using the specified array of coordinates.

参数

coordinates: array of x and y coordinates: array( array( 'x' => 4, 'y' => 6 ), array( 'x' => 8, 'y' => 10 ) )

返回值

成功时返回 true。

示例

示例 #1 ImagickDraw::polyline() example

<?php
function polyline($strokeColor, $fillColor, $backgroundColor) {
    $draw = new \ImagickDraw();

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

    $draw->setStrokeWidth(5);

    $points = [
        ['x' => 40 * 5, 'y' => 10 * 5],
        ['x' => 20 * 5, 'y' => 20 * 5],
        ['x' => 70 * 5, 'y' => 50 * 5],
        ['x' => 60 * 5, 'y' => 15 * 5]
    ];

    $draw->polyline($points);

    $image = new \Imagick();
    $image->newImage(500, 300, $backgroundColor);
    $image->setImageFormat("png");
    $image->drawImage($draw);

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

?>

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kris at blackpepper dot co dot nz ¶

16 years ago

draw a filled Isosceles Triangle

<?php
$width =  601;
$height = 601;

$max_x = $width  - 1;
$max_y = $height - 1;
$mid_y = $max_y / 2;
$mid_x = $max_x / 2;

$fillcolor = '#F00F00';

try {
        $lo_img = new Imagick();
        $lo_img->newImage( $width, $height, new ImagickPixel('transparent'));
        
        $draw = new ImagickDraw();
        
        $draw->setFillColor($fillcolor);
        $draw->setStrokeWidth( 1 );

        
        
                            //start point                  //end point    
        $co_ords = array( array( 'x' => $mid_x, 'y' => 0 ),array('x'=>0,'y'=>$max_y)
                ,array( 'x' => 0, 'y' => $max_y ),array('x'=>$max_x,'y'=>$max_y)
                 ,array( 'x' => $mid_x, 'y' => 0 ),array('x'=>$max_x,'y'=>$max_y)
                );
        
        
        
        $draw->polyline($co_ords);

        $lo_img->drawImage( $draw );
        
        $lo_img->setImageFormat( "png" );
        
        
        header( "Content-Type: image/png" );
        echo $lo_img;
        
        $lo_img->destroy();
        $draw->destroy();
        exit;
        
    } catch (Exception $ex) {
        print_r($ex);
        return;
    }
?>