CODEWITHSUNDEEP
phpgdimagick
Jedi
Jedi

Reputation: 121

Using a transparent PNG as a clip mask

Is it possible to take this image:

image1

And apply this mask:

mask

And turn it into this:

image2

Using either GD or Imagick? I know it's possible to mask an image using shapes but I'm not sure how to go on about doing it with a pre-created alphatransparent image. :s

Upvotes: 10

Views: 18427

Answers (3)

Saud Alfadhli
Saud Alfadhli

Reputation: 856

Great work with (ImageMagick) NOT GD .. I see the tags of this question is GD!!

Here is a GD version at this link: PHP GD Use one image to mask another image, including transparency

Upvotes: 0

jspash
jspash

Reputation: 191

Using Imagick and ImageMagick version > 6 (I don't know if it will work on older versions):

// Set image path
$path = '/path/to/your/images/';

// Create new objects from png's
$dude = new Imagick($path . 'dude.png');
$mask = new Imagick($path . 'dudemask.png');

// IMPORTANT! Must activate the opacity channel
// See: http://www.php.net/manual/en/function.imagick-setimagematte.php
$dude->setImageMatte(1); 

// Create composite of two images using DSTIN
// See: http://www.imagemagick.org/Usage/compose/#dstin
$dude->compositeImage($mask, Imagick::COMPOSITE_DSTIN, 0, 0);

// Write image to a file.
$dude->writeImage($path . 'newimage.png');

// And/or output image directly to browser
header("Content-Type: image/png");
echo $dude;

Upvotes: 16

Cryophallion
Cryophallion

Reputation: 704

I think you are looking for imagealphablending. I use it for watermarks, and I believe it will do the effect you are looking for.

Upvotes: 1

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