#!/usr/bin/perl
#Prima.sierpinski.pl
#based on examples/f_fill and http://perlmonks.com/index.pl?node_id=33
+7175
use strict;
use vars::i qw( $width 4 );
use vars::i qw( $height 4 );
use vars::i '@iterative_set' =>
(
sub {
my @pt = ( 400, 50 );
return( ( $pt[0] + $_[0] ) / 2, ( $pt[1] + $_[1] ) / 2 );
},
sub {
my @pt = ( 50, 400 );
return( ( $pt[0] + $_[0] ) / 2, ( $pt[1] + $_[1] ) / 2 );
},
sub {
my @pt = ( 750, 400 );
return( ( $pt[0] + $_[0] ) / 2, ( $pt[1] + $_[1] ) / 2 );
},
);
use Prima;
use Prima::Classes;
$::application = Prima::Application-> create;
my $w = Prima::Window-> create(
onDestroy=> sub {$::application-> close;},
size => [ 444, 444],
centered => 1,
buffered => 1,
palette => [ cl::Black, cl::White ],
onPaint => sub {
my ( $self, $canvas) = @_;
$canvas-> color( cl::Back);
# start coordinates
my $x = 40;
my $y = 400;
my $iter = 0;
# weed out transients
while( $iter++ != 100 ) {
( $x, $y ) = $iterative_set[ int rand 3 ]->( $x, $y );
}
$iter = 0;
while( $iter++ < 10000 ) {
( $x, $y ) = $iterative_set[ int rand 3 ]->( $x, $y );
$canvas->rectangle ( $x, $y, $x+$width, $y+$height );
}
},
);
run Prima;
__END__
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