成员的完整列表，这些成员属于 carla::road::element::GeometryLine,包括所有继承而来的类成员

_heading	carla::road::element::Geometry	protected
_length	carla::road::element::Geometry	protected
_start_position	carla::road::element::Geometry	protected
_start_position_offset	carla::road::element::Geometry	protected
_type	carla::road::element::Geometry	protected
DistanceTo(const geom::Location &p) const override	carla::road::element::GeometryLine	inlinevirtual
Geometry(GeometryType type, double start_offset, double length, double heading, const geom::Location &start_pos)	carla::road::element::Geometry	inlineprotected
GeometryLine(double start_offset, double length, double heading, const geom::Location &start_pos)	carla::road::element::GeometryLine	inline
GetHeading() const	carla::road::element::Geometry	inline
GetLength() const	carla::road::element::Geometry	inline
GetStartOffset() const	carla::road::element::Geometry	inline
GetStartPosition()	carla::road::element::Geometry	inline
GetType() const	carla::road::element::Geometry	inline
PosFromDist(double dist) const override	carla::road::element::GeometryLine	virtual
~Geometry()=default	carla::road::element::Geometry	virtual