void vtkPolyLine ()
	void vtkPolyLine ()
	static vtkPolyLine *New ()
	const char *GetClassName ()
	int GenerateSlidingNormals (vtkPoints * ,vtkCellArray * ,vtkNormals *)
	vtkCell *MakeObject ()
	int GetCellType ()
	int GetCellDimension ()
	int GetNumberOfEdges ()
	int GetNumberOfFaces ()
	vtkCell *GetEdge (int )
	vtkCell *GetFace (int )
	int CellBoundary (int ,float ,vtkIdList *)
	void Contour (float ,vtkScalars * ,vtkPointLocator * ,vtkCellArray * ,vtkCellArray * ,vtkCellArray * ,vtkPointData * ,vtkPointData * ,vtkCellData * ,int ,vtkCellData *)
	void Clip (float ,vtkScalars * ,vtkPointLocator * ,vtkCellArray * ,vtkPointData * ,vtkPointData * ,vtkCellData * ,int ,vtkCellData * ,int )
	int EvaluatePosition (float ,float ,int & ,float ,float & ,float *)
	void EvaluateLocation (int & ,float ,float ,float *)
	int IntersectWithLine (float ,float ,float ,float & ,float ,float ,int &)
	int Triangulate (int ,vtkIdList * ,vtkPoints *)
	void Derivatives (int ,float ,float * ,int ,float *)
	int GetParametricCenter (float )
	int CellBoundary (int ,float ,vtkIdList &)
	int Triangulate (int ,vtkIdList & ,vtkPoints &)

Given points and lines, compute normals to lines. These are not true normals, they are "orientation" normals used by classes like vtkTubeFilter that control the rotation around the line. The normals try to stay pointing in the same direction as much as possible (i.e., minimal rotation).

int GenerateSlidingNormals (vtkPoints * ,vtkCellArray * ,vtkNormals *)

See the vtkCell API for descriptions of these methods.

	vtkCell *MakeObject ()
	int GetCellType ()
	int GetCellDimension ()
	int GetNumberOfEdges ()
	int GetNumberOfFaces ()
	vtkCell *GetEdge (int )
	vtkCell *GetFace (int )
	int CellBoundary (int ,float ,vtkIdList *)
	void Contour (float ,vtkScalars * ,vtkPointLocator * ,vtkCellArray * ,vtkCellArray * ,vtkCellArray * ,vtkPointData * ,vtkPointData * ,vtkCellData * ,int ,vtkCellData *)
	void Clip (float ,vtkScalars * ,vtkPointLocator * ,vtkCellArray * ,vtkPointData * ,vtkPointData * ,vtkCellData * ,int ,vtkCellData * ,int )
	int EvaluatePosition (float ,float ,int & ,float ,float & ,float *)
	void EvaluateLocation (int & ,float ,float ,float *)
	int IntersectWithLine (float ,float ,float ,float & ,float ,float ,int &)
	int Triangulate (int ,vtkIdList * ,vtkPoints *)
	void Derivatives (int ,float ,float * ,int ,float *)

Return the center of the point cloud in parametric coordinates.

int GetParametricCenter (float )

For legacy compatibility. Do not use.

int CellBoundary (int ,float ,vtkIdList &)