PHP ImagickDraw setStrokeLineJoin()用法及代碼示例

ImagickDraw::setStrokeLineJoin()函數是PHP中的內置函數，用於指定筆觸路徑時在拐角處使用的形狀。

用法:

bool ImagickDraw::setStrokeLineJoin( $linejoin )

參數：該函數接受單個參數$linejoin，該參數用於將線連接的值保存為整數類型。

LINEJOIN constants:

imagick::LINEJOIN_UNDEFINED(整數)
imagick::LINEJOIN_MITER(整數)
imagick::LINEJOIN_ROUND(整數)
imagick::LINEJOIN_BEVEL(整數)

返回值：該函數不返回任何值。

以下示例程序旨在說明PHP中的ImagickDraw::setStrokeLineJoin()函數：

程序1:

<?php 
  
// require_once('path/vendor/autoload.php'); 
  
// Create an ImagickDraw object to draw into. 
$draw = new \ImagickDraw(); 
  
// Set the stroke opacity 
$draw->setStrokeOpacity(1); 
  
// Set the stroke color 
$draw->setStrokeColor('Black'); 
  
// Set the stroke opacity 
$draw->setStrokeOpacity(0.8); 
  
//Set the stroke width 
$draw->setStrokeWidth(10); 
  
// Set Stroke Line Join Parameteres 
$draw->setStrokeLineJoin(Imagick::LINEJOIN_ROUND); 
  
// Set the image filled color  
$draw->setFillColor('lightgreen'); 
      
// Set the Stroke Miter Limit  
$draw->setStrokeMiterLimit(40 * 12); 
$points = [ 
        ['x' => 50 * 6, 'y' => 10 * 5], 
        ['x' => 20 * 7, 'y' => 30 * 5],  
        ['x' => 60 * 8, 'y' => 50 * 5],  
        ['x' => 70 * 3, 'y' => 15 * 5], 
    ]; 
  
// Draw the polygon 
$draw->polygon($points); 
  
// Create new Imagick object  
$image = new \Imagick(); 
  
// Set the dimension of image 
$image->newImage(500, 300, 'white'); 
  
// Set the image format 
$image->setImageFormat("png"); 
  
// Draw the image 
$image->drawImage($draw); 
header("Content-Type: image/png"); 
  
// Display the image 
echo $image->getImageBlob(); 
?>

輸出：
setstrokelinejoin

程序2:

<?php 
  
// Create an ImagickDraw object 
$draw = new ImagickDraw(); 
  
// Set the Stroke Width 
$draw->setStrokeWidth(1); 
  
// Set the Stroke Color 
$draw->setStrokeColor('black'); 
      
// Set the image filled color 
$draw->setFillColor('yellow'); 
  
// Set the Stroke Width 
$draw->setStrokeWidth(20); 
  
// Decalare the offset variable 
$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 the polygon 
$draw->polyline($points); 
} 
  
// Create new Imagick object  
$image = new \Imagick(); 
  
// Set the image dimensions 
$image->newImage(500, 700, 'white'); 
  
// Set the image format 
$image->setImageFormat("png"); 
  
// Draw the image 
$image->drawImage($draw); 
header("Content-Type: image/png"); 
  
// Display the image 
echo $image->getImageBlob(); 
?>

輸出：
setstrokelinejoin

參考： http://php.net/manual/en/imagickdraw.setstrokelinejoin.php

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