[FIXED] How to translate ImageMagick command to Imagick in PHP?

Issue

I've tried to translate it, but doesn't work, doesn't anyone know what the wrong is ?

ImageMagick

convert source.jpg \( -size 640x480 xc:white -size 200x200 
xc:black -geometry +200+100 -compose over -composite \) 
+geometry -alpha off -compose copy_opacity -composite result.png

PHP code with Imagick I tried, but didn't work:

//Open your image and get its dimensions
$image = new Imagick('source.png');
$height = $image->getImageHeight();
$width = $image->getImageWidth();

//Create a new transparent image of the same size
$mask = new Imagick();
$mask->newImage($width, $height, new ImagickPixel('white'));

//Draw onto the new image the areas you want to be transparent in the original
$draw = new ImagickDraw();
$draw->setFillColor('black'); 
$draw->rectangle($x, $y, $x + 200, $y + 200);
$mask->drawImage( $draw );

//Composite the images
$image->compositeImage($mask, Imagick::COMPOSITE_COPYOPACITY, 0, 0, Imagick::CHANNEL_ALPHA);
$image->setImageFormat('png');
$image->writeImage("~/images/result.png");

Original Question:

How to make specified area of an image transparent with Imagick?

Another trying

$width = 256;
$height = 256;
$x = 50;
$y = 100;
$fooWidth = 100;
$fooHeight = 60;


$image = new Imagick();
$image->newImage($width, $height, new ImagickPixel('yellow'));


//Create a new transparent image of the same size
$mask = new Imagick();
$mask->newImage($width, $height, new ImagickPixel('white'));
$mask->setImageFormat('png');

//Draw onto the new image the areas you want to be transparent in the original
$draw = new ImagickDraw();
$draw->setFillColor('black');
$draw->rectangle($x, $y, $x + $fooWidth, $y + $fooHeight);
$mask->drawImage($draw);

//Composite the images
$image->compositeImage($mask, Imagick::COMPOSITE_COPYOPACITY, 0, 0);

$image->setImageFormat('png');
$image->writeImage($path);

COMPOSITE_COPYOPACITY looks doesn't work:

Solution

try turning alpha off at the end when you create the mask. This works fine for me:

convert -size 500x500 xc:yellow \( -size 500x500 xc:white -fill black -draw "rectangle 100,100 300,300" -alpha off \) -compose copy_opacity -composite result.png

See http://us3.php.net/manual/en/imagick.setimagematte.php where the example adds

$mask->setImageMatte(false);

After the draw command and before the compositeImage() command

Answered By - fmw42

Answer Checked By - Gilberto Lyons (PHPFixing Admin)