[vtkusers] problems while subclassing vtkCellLocator (Vtk5.0)

[Jens G.]

Hi 

While trying to subclass vtkCellLocator to add the function 
	void FindCellsWithinRadius (double radius, double x[3], vtkIdList *result);
I found these problems:

1)
The class vtkNeighborCells should be defined in the header-file 
vtkCellLocator.h and not in vtkCellLocator.cxx where it is right now.
Right now it is not possible to subclass vtkCellLocator and access functions 
of vtkNeighborCell-objects.
(I do not know of the possibility for forward declaration of member-functions 
I could use in my cxx-file of the subclass)

2)
vtkCellLocator::Distance2ToBounds(double x[3], double bounds[6])
	should be
vtkCellLocator::Distance2ToBounds(const double x[3], const double bounds[6])
	like it is in vtkPointLocator.

	Greetings
		Jens