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PHP ImagickDraw getStrokeDashOffset()用法及代码示例


ImagickDraw::getStrokeDashOffset()函数是PHP中的内置函数,用于将偏移量添加到破折号模式中以开始破折号。该偏移量不过是开始由setStrokeDashArray()设置破折号之前要给的间距。

用法:

float ImagickDraw::getStrokeDashOffset( void )

参数:此函数不接受任何参数。


返回值:该函数返回一个包含偏移量的浮点值。

异常:该函数在错误时引发ImagickException。

以下示例程序旨在说明PHP中的ImagickDraw::getStrokeDashOffset()函数:

示例1:

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

输出:

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; 
?>

输出:

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(); 
?>

输出:

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



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注:本文由纯净天空筛选整理自gurrrung大神的英文原创作品 PHP | ImagickDraw getStrokeDashOffset() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。