- rb_define_singleton_method (cPolygon, "new", c_new, 1);
- rb_define_method (cPolygon, "point_add", c_point_add, 2);
- rb_define_method (cPolygon, "points_clear", c_points_clear, 0);
+ rb_define_singleton_method (c, "new", c_new, 1);
+ rb_define_method (c, "point_add", c_point_add, 2);
+ rb_define_method (c, "points_clear", c_points_clear, 0);