SVG path bounding box: merge multiple boxes

TL;DR

Merging many bounding boxes together.

Also in this case, the code is straightforward:

sub merged_bb ($first, @others) {
  my %retval = (min => {$first->{min}->%*}, max => {$first->{max}->%*});
  for my $bb (@others) {
     for my $axis (qw< x y >) {
        $retval{min}{$axis} = $bb->{min}{$axis}
           if $retval{min}{$axis} > $bb->{min}{$axis};
        $retval{max}{$axis} = $bb->{max}{$axis}
           if $retval{max}{$axis} < $bb->{max}{$axis};
     }
  }
  return \%retval;
}

In short, it suffices to take the minimum and maximux values for both the x and the y axes and voilà, we have our overall merged bounding box.

Stay tuned!

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