The Imagick::setImageOpacity() function is an inbuilt function in PHP which is used to set the opacity level of an Imagick object. This method is available in ImageMagick 6.3.1 or newer versions.
Syntax:
bool Imagick::setImageOpacity( $opct )
Parameters: This function accepts single parameter $opct which specifies the opacity of Imagick object to be set.
Return Value: This function returns True on success.
Below programs illustrate the Imagick::setImageOpacity() function in PHP:
Original Image:
Program 1:
<?php // Create new Imagick object $im = new Imagick( // Using setImageOpacity function $im->setImageOpacity(0.3); // Display result header("Content-Type: image/jpg"); echo $im->getImageBlob(); ?> |
Output:
Original Image:
Program 2:
<?php $string = "Computer Science portal for Geeks!"; // Creating new image of above String // and add color $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); $im->setImageFormat('jpeg'); // Using setImageOpacity function $im->setImageOpacity(0.9); header("Content-Type: image/jpg"); echo $im->getImageBlob(); ?> |
Output:
Reference: http://php.net/manual/en/imagick.setimageopacity.php
