Help for this page
my @clips = ( { cx => $X * 0.500, cy => $Y * 0.4, rx2 => ( $X * 0.295 )**2, ry +2 => ( $Y * 0.40 )**2 }, ... { cx => $X * 0.428, cy => $Y * 0.748, rx2 => ( $X * 0.067 )**2, ry +2 => ( $Y * 0.038)**2 }, ... };
sub clip { my( $x, $y ) = @_; ... ... return 0; }