The Imagick::rollImage() function is an inbuilt function in PHP which is used to roll an image.
Syntax:
bool Imagick::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 True on success.
Original Image:
Below program illustrate Imagick::rollImage() function in PHP:
Program 1:
<?php // Create an Imagick object $imagick = new \Imagick(
// Use rollImage function $imagick ->rollImage(60, 50);
header( "Content-Type: image/jpg" );
// Display the image echo $imagick ->getImageBlob();
?> |
Output:
Program 2:
<?php $string = "Computer Science portal for Geeks!" ;
// Creating new image of above String // and add color and background $im = new Imagick();
$draw = new ImagickDraw();
// Fill the color in image $draw ->setFillColor( new ImagickPixel( 'green' ));
// Set the text font size $draw ->setFontSize(50);
$matrix = $im ->queryFontMetrics( $draw , $string );
$draw ->annotation(0, 40, $string );
$im ->newImage( $matrix [ 'textWidth' ], $matrix [ 'textHeight' ],
new ImagickPixel( 'white' ));
// Draw the image $im ->drawImage( $draw );
// Roll the Image $im ->rollImage(70, 50);
$im ->setImageFormat( 'jpeg' );
header( "Content-Type: image/jpg" );
// Display the output image echo $im ->getImageBlob();
?> |
Output:
Reference: http://php.net/manual/en/imagick.rollimage.php