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PHP | Gmagick shearimage() Function

  • Last Updated : 24 Mar, 2021

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(
   
// 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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