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unit module MatInput;
class mat is export {
has Int $.w;
has Int $.h;;
has Array @.rows;
has Array @.cols;
has Array @.boxes;
method dispRows () {
my $indx = 0;
"Input:".say;
for @!rows -> $r {
"$indx \t\t $r".say;
$indx++;
}
print "\n";
}
method dispCols () {
for @!cols -> $c {
$c.say;
}
}
method getLargestBoxes() {
my $errMsg = "no boxes found.";
if ( @!boxes.elems > 0 ) {
my @b = @!boxes.sort( { my %h = %($_); %h{"area"} } ).reverse;
my %l = %( @b[0] );
my $largestArea = %l{"area"};
if ( $largestArea >= 4 ) {
for (@b) -> $b {
my %h = %($b);
if ( %h{"area"} >= $largestArea ) {
"Output:".say;
%h.say;
for (0 .. $.h) -> $rh {
print "$rh \t\t ";
for (0 .. $.w) -> $cw {
my $vl = 0;
$vl = 1 if (
$cw >= %h{"col"} && $cw < %h{"col"} + %h{"width"} &&
$rh >= %h{"row"} && $rh < %h{"row"} + %h{"height"}
);
print "$vl ";
}
print "\n";
}
print "\n";
}
}
} else {
die $errMsg;
}
} else {
die $errMsg;
}
}
method !makeBoxes () {
my %runs;
my $indx = 0;
for ( 0 .. $!h ) -> $r {
my @row = @( @!rows[$r] );
@row.join() ~~ m:ex/11+ { ## do this to try to find overlapping rectangles
my $key = ($/.from, $/.chars).join(':');
%runs{ $key }{ $indx }++;
}/;
$indx++;
}
## find adjacent line runs
my %adj;
for %runs.keys -> $k {
for ( 0 .. $!h ) -> $r {
if ( %runs{$k}{$r}:exists ) {
%adj{$k}{$r} = $r;
if ( %adj{$k}{$r -1}:exists ) {
%adj{$k}{$r} = (%adj{$k}{$r -1}, $r).join(":");
%adj{$k}{$r -1}:delete;
}
}
}
}
## make boxes
for %adj.keys -> $ad {
for %adj{$ad}.keys -> $adj {
my @lines = %adj{$ad}{$adj}.split(/\:/);
my $lineC = @lines.elems;
if ( $lineC >1 ) {
my ($pos, $len) = $ad.split(/\:/);
my $area = $len * $lineC;
@!boxes.push([
col => $pos, row => @lines[0],
width => $len, height => $lineC,
area => $area
]);
}
}
}
}
method addData ( $in ) {
my $ccnt = 0;
my $kcnt = 0;
for $in.lines() -> $l {
my @l = $l.comb.grep(/0|1/).map({ $_ +0});
next if @l.elems < 2;
if ( $kcnt == 0 ) {
$kcnt = @l.elems;
@!rows.push( (@l) );
$ccnt++;
} else {
if ( @l.elems != $kcnt ) {
die("Bad Input; input is meant to be rectangular in fashion.");
}
@!rows.push( (@l) );
$ccnt++;
}
}
die("bad input.") if ( $kcnt == 0 || $ccnt == 0 );
$!w = $kcnt -1;
$!h = $ccnt -1;
for ( 0 .. ($!w) ) -> $col {
for ( 0 .. ($!h) ) -> $row {
# @!rows[$row][$col].say;
@.cols[$col].append( @!rows[$row][$col] );
}
}
self!makeBoxes();
}
}
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