ImagickDraw::polyline

(PECL imagick 2.0.0)

绘制多段线

说明

ImagickDraw::polyline (array $coordinates) : bool

Warning

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。

范例

Example #1 ImagickDraw::polyline()

<?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();
}
?>

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;
  }
?>