The Imagick::setImageMatte() function is an inbuilt function in PHP which is used to set the matte channel of an Imagick object.
Syntax:
bool Imagick::setImageMatte( $matte )
Parameters: This function accepts single parameter $matte. If the parameter set to True then it activate the matte channel and if the parameter set to False then it disable the matte channel.
Return Value: This function returns True on success.
Below programs illustrate the Imagick::setImageMatte() function in PHP:
Original Image:
Program 1:
<?php // Create new Imagick object $imagick = new Imagick(
// Using getImageMatte function $res = $imagick ->getImageMatte();
// Display result echo "Matte Before: " . $res . "</br>" ;
// Set Image matte true. // If it set to false then matte will // disable and return nothing when // using getimagematte function $imagick ->setImageMatte(true);
// Using getImageMatte function $res = $imagick ->getImageMatte();
// Display result echo "Matte After: " . $res . "</br>" ;
?> |
Output:
Matte Before: 1 Matte After: 1
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);
$metrix = $im ->queryFontMetrics( $draw , $string );
$draw ->annotation(0, 40, $string );
$im ->newImage( $metrix [ 'textWidth' ], $metrix [ 'textHeight' ],
new ImagickPixel( 'white' ));
// Draw the image $im ->drawImage( $draw );
$im ->setImageFormat( 'jpeg' );
// Using getImageMatte function $res = $im ->getImageMatte();
// Display result echo "Matte Before: " . $res . "</br>" ;
// Set Image matte true/false or (0/1) // if set false then matte will disable // and return nothing when // using getimagematte function $im ->setImageMatte(false);
// Using getImageMatte function $res = $im ->getImageMatte();
// Display result echo "Matte After: " . $res . "</br>" ;
?> |
Output:
Matte Before: 1 Matte After:
Reference: http://php.net/manual/en/imagick.setimagematte.php