register_type_constraint
/ ];
+=head1 ATTRIBUTES
+
+=head2 C<x>
+
+The abscissa of the point.
+
+=cut
+
has 'x' => (
is => 'ro',
isa => 'Num',
required => 1,
);
+=head2 C<y>
+
+The ordinate of the point.
+
+=cut
+
has 'y' => (
is => 'ro',
isa => 'Num',