85 lines
1.7 KiB
Perl
85 lines
1.7 KiB
Perl
use 5.20.0;
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use Grid::Transform;
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my %transform;
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my $i = 0;
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while(<>) {
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chomp;
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s/\///g;
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my ($from,$to) = split ' => ';
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my @from = split '', $from;
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my $gt = Grid::Transform->new( \@from, rows => sqrt @from );
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for my $t (
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map { $_, $_->copy->rotate90, $_->copy->rotate180, $_->copy->rotate270 }
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map { $_, $_->copy->flip_vertical } $gt ) {
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$transform{ join '', $t->grid} = $to;
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}
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}
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use DDP;
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#p %transform;
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my @grid = ([qw/ . # . /], [qw/ . . # /], [qw/ # # # /] );
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for( 1..5 ) {
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my @new_grid;
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if( not @grid % 2 ) {
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for my $x ( 0..$#grid/2 ) {
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for my $y ( 0..$#grid/2 ) {
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transform_2(\@grid,\@new_grid,$x,$y);
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}
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}
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}
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else {
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for my $x ( 0..$#grid/3 ) {
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for my $y ( 0..$#grid/3 ) {
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transform_3(\@grid,\@new_grid,$x,$y);
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}
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}
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}
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say @$_ for @new_grid;
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say "\n\n";
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@grid = @new_grid;
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}
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say scalar grep { $_ eq '#' } map { @$_ } @grid;
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sub transform_2 {
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my ( $grid, $n, $x, $y ) = @_;
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warn "$x:$y";
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my $k;
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for my $i ( 0..1 ) {
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for my $j ( 0..1 ) {
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$k .= $grid->[2*$x+$i][2*$y+$j];
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}
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}
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my @new = split '', $transform{$k};
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warn @new;
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my ($r,$c) = ($x,$y);
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for my $k ( 0..2 ) {
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$n->[3*$r+$k] ||= [];
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$n->[3*$r+$k][3*$c+$_] = shift @new for 0..2;
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}
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}
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sub transform_3 {
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my ( $grid, $n, $x, $y ) = @_;
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my $k;
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for my $i ( 0..2 ) {
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for my $j ( 0..2 ) {
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$k .= $grid->[3*$x+$i][3*$y+$j];
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}
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}
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warn $k;
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my @new = split '', $transform{$k};
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my ($r,$c) = ($x,$y);
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for my $k ( 0..3 ) {
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$n->[4*$x+$k] ||= [];
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$n->[4*$x+$k][4*$c+$_] = shift @new for 0..3;
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}
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}
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