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PHP ImagickDraw getStrokeDashOffset()用法及代碼示例


ImagickDraw::getStrokeDashOffset()函數是PHP中的內置函數,用於將偏移量添加到破折號模式中以開始破折號。該偏移量不過是開始由setStrokeDashArray()設置破折號之前要給的間距。

用法:

float ImagickDraw::getStrokeDashOffset( void )

參數:此函數不接受任何參數。


返回值:該函數返回一個包含偏移量的浮點值。

異常:該函數在錯誤時引發ImagickException。

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

示例1:

<?php 
  
// Create a new ImagickDraw object 
$draw = new ImagickDraw(); 
   
// Get the stroke dash offset 
$offset = $draw->getStrokeDashOffset(); 
echo $offset; 
?>

輸出:

0 // Which is the default value

示例2:

<?php 
  
// Create a new ImagickDraw object 
$draw = new ImagickDraw(); 
  
// Set the stroke dash offset 
$draw->setStrokeDashOffset(50); 
  
// Get the stroke dash offset 
$offset = $draw->getStrokeDashOffset(); 
echo $offset; 
?>

輸出:

50

示例3:

<?php 
  
// Create a new ImagickDraw object 
$draw = new ImagickDraw(); 
   
// Create a new imagick object 
$imagick = new Imagick(); 
   
// Create a image on imagick object 
$imagick->newImage(800, 250, 'black'); 
   
// Create a new ImagickDraw object 
$draw = new ImagickDraw(); 
   
// Set the fill color 
$draw->setFillColor('black'); 
   
// Set the color of stroke 
$draw->setStrokeColor('white'); 
   
// Set the font size 
$draw->setFontSize(15); 
  
 // Set the stroke dash array 
$draw->setStrokeDashArray([20, 5, 19, 15, 5, 15]); 
  
// Draw a rectangle 
$draw->rectangle(100, 50, 225, 175); 
   
// Annotate a text 
$draw->annotation(50, 200, 'The strokeDashOffset here is '
           . $draw->getStrokeDashOffset()); 
  
// Set the stroke dash offset 
$draw->setStrokeDashOffset(20); 
   
// Draw a rectangle 
$draw->rectangle(500, 50, 625, 175); 
   
// Get the stroke dash array 
$strokeDashArray = $draw->getStrokeDashArray(); 
   
// Annotate a text 
$draw->annotation(450, 200, 'The strokeDashOffset here is '
           . $draw->getStrokeDashOffset()); 
   
// Render the draw commands 
$imagick->drawImage($draw); 
   
// Show the output 
$imagick->setImageFormat('png'); 
header("Content-Type: image/png"); 
echo $imagick->getImageBlob(); 
?>

輸出:

參考: https://www.php.net/manual/en/imagickdraw.getstrokedashoffset.php



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注:本文由純淨天空篩選整理自gurrrung大神的英文原創作品 PHP | ImagickDraw getStrokeDashOffset() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。