You need to divide by whichever ratio is the greatest:

rescale( 1000, 1234 );
rescale( 100, 1000 );

sub rescale
{
    my ( $height, $width ) = @_;
    my $maxh = "600";
    my $maxw = "800";

    if ($height > $maxh || $width > $maxw)
    {
        my $hratio = $height / $maxh;
        my $wratio = $width / $maxw;

        my $ratio = $hratio > $wratio ? $hratio : $wratio;

        my $newh = $height / $ratio;
        my $neww = $width  / $ratio;

        printf "H=%d  W=%d  ratios: old=%0.2f new =%0.2f\n",
            $newh, $neww, $height / $width, $newh / $neww;
    }
}

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In reply to Re: Fix this HTML-ish image sizer by FunkyMonk
in thread Fix this HTML-ish image sizer by sulfericacid

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