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

_curve_end	carla::road::element::GeometrySpiral	private
_curve_start	carla::road::element::GeometrySpiral	private
_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 &) const override	carla::road::element::GeometrySpiral	virtual
Geometry(GeometryType type, double start_offset, double length, double heading, const geom::Location &start_pos)	carla::road::element::Geometry	inlineprotected
GeometrySpiral(double start_offset, double length, double heading, const geom::Location &start_pos, double curv_s, double curv_e)	carla::road::element::GeometrySpiral	inline
GetCurveEnd()	carla::road::element::GeometrySpiral	inline
GetCurveStart()	carla::road::element::GeometrySpiral	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::GeometrySpiral	virtual
~Geometry()=default	carla::road::element::Geometry	virtual