CL_Line2x< Type >::CL_Line2x(); CL_Line2x< Type >::CL_Line2x( const CL_Line2x < Type > & copy); CL_Line2x< Type >::CL_Line2x( const CL_Vec2 < Type > & point_p, const CL_Vec2 < Type > & point_q); CL_Line2x< Type >::CL_Line2x( const CL_Vec2 < Type > & point_p, Type gradient);