The Gmagick::rollimage() function is an inbuilt function in PHP which is used to roll an image.
Syntax:
Gmagick Gmagick::rollimage( $x, $y )
Parameters: This function accepts two parameters as mentioned above and described below:
- $x: This parameter stores the value of the X offset.
- $y: This parameter stores the value of the Y offset.
Return Value: This function returns Gmagick object on success.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::rollimage() function in PHP:
Program 1:
Input Image:
php
<?php // Create a Gmagick object $gmagick = new Gmagick( // Roll the image. $gmagick->rollimage(400, 100); 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->rollimage(190, 190); // Display the output image header("Content-Type: image/png"); echo $gmagick->getImageBlob(); ?> |
Output:
Reference: http://php.net/manual/en/gmagick.rollimage.php
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