Programming Web Graphics with Perl and GNU Softwar

Name

Transform( ) — scale or crop an image

Synopsis

$image->Transform(crop=>geometry,

                     
geometry=>geometry)

Transform( ) is a convenience method that crops or scales an image to the specified dimensions with automatic sharpening. You can express the geometry parameter as a percentage string:

$image->Transform(geometry=>'50%');      # Scale proportionally to half its
                                         # size
$image->Transform(geometry=>'50%x25%');  # Scale 50% horizontally, 
                                         # 25% vertically
$image->Transform(geometry=>'160x160>'); # scale so one dimension is 
                                         # exactly 160 pixels