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PHP | Gmagick shearimage() Function

Last Updated : 24 Mar, 2021
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The Gmagick::shearimage() function is an inbuilt function in PHP which is used to slide one edge of an image along the X or Y axis to create a parallelogram. The X-direction shear slides an edge along the X-axis, while a Y direction shear slides an edge along the Y-axis. The shear angle is used to set shear of the image.
Syntax: 
 

Gmagick Gmagick::shearimage( $color, $xShear, $yShear )


Parameters: This function accepts three parameters as mentioned above and described below: 
 

  • $color: This parameter is used to set the background color.
  • $xShear: This parameter is used to set degrees to x-shear of the image.
  • $yShear: This parameter is used to set degrees to y-shear of the image.


Return Value: This function returns the Gmagick object on success.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::shearimage() function in PHP:
Program 1: 
Input Image: 
 


 

php
<?php 
  
// Create a Gmagick object 
$gmagick = new Gmagick(
'https://media.geeksforgeeks.org/wp-content/uploads/tech.png'); 
  
// shear the image. 
$gmagick->shearimage('blue', 25, 50); 

header('Content-type: image/png'); 
  
// Output the image 
echo $gmagick; 
?>

Output: 
 


Program 2: 
 

php
<?php 
   
// Create a GmagickDraw object 
$draw = new GmagickDraw(); 
  
// Create GmagickPixel object 
$strokeColor = new GmagickPixel('Red'); 
$fillColor = new GmagickPixel('Green'); 
  
// Set the color, opacity of image 
$draw->setStrokeOpacity(1); 
$draw->setStrokeColor('Red'); 
$draw->setFillColor('Green'); 
  
// Set the width and height of image 
$draw->setStrokeWidth(7); 
$draw->setFontSize(72); 
   
// Function to draw circle  
$draw->circle(250, 250, 100, 150); 
 
$gmagick = new Gmagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 
$gmagick->drawImage($draw); 

// Shear the image
$gmagick->shearimage('yellow', 20, 40);
 
// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 
?> 

Output: 
 


Reference: http://php.net/manual/en/gmagick.shearimage.php
 


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