fig21_03.pl

PERL语言资料 可以用于PERL程序设计

#!/usr/bin/perl
# Fig 21.3: fig21_03.pl
# A program to enlarge a picture.

use GD;
use strict;
use warnings;

my $image = GD::Image->newFromPng( "fig21_02.png" );
my @dimensions = $image->getBounds();
my @newDimensions = map( { $_ * 2 } @dimensions );

my $newImage = new GD::Image ( @newDimensions );
$newImage->copyResized( $image, 0, 0, 0, 0, @newDimensions,
   @dimensions );

open( FILE, ">fig21_04.png" ) or 
   die( "Could not write to file: $!" );

binmode( FILE );
print( FILE $newImage->png() );

close( FILE ) or die( "Can not close file: $!" );

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