[vtkusers] Changes to vtkLocator Class

[John Biddiscombe]

Mike

Apologies. I posted a fairly long mail to the developers list about 
locator changes, but forgot the users list.

I have added a new vtkAbstractCellLocator class and made vtkCellLocator 
and vtkOBBTree subclasses of that.
Some members which were in vtkLocator, have been moved to 
vtkAbstractCellLocator, and a few opther small changes have been made. 
The API breakage is in fact the one you found
RetainCellLists has moved from vtkLocator to vtkAbstractCellLocator as 
it is applicable to cell locators but not used by point locators.

Currently, vtkKdTree lies outside of cell or point locator heirarchies 
and subclasses vtkLocator directly. I hope to move it too one day, but I 
am not familiar enough with the code to warrant it.

I do not think there are other breakages, and I think this one was OK 
because, a) it was in the wrong place to start with. b) You can now 
create an interfac which accepts a vtkAbstractCellLocator and pass in 
CellLocator, OBBTree or in my case custom locators and retain a single 
interface.

Should others find trouble with the new classes, please contact me ASAP 
and I'll advise on fixes etc.

In your case, if RetainCellListsOff was being called on anything other 
than a vtkCellLocator, it was being ignored, so you can just delete it 
anyway.

JB


> I see there was a commit today on this class where some methods were 
> removed, namely the RetainCellListsOff() method. This broke my code 
> (which may be a _good_ thing) and I was wondering if I still need to 
> call that method, the functionality in the method has been moved 
> elsewhere or if I can just delete my call to RetainCellListsOff and 
> finish compiling my code.
>
> Thanks for any help


-- 
John Biddiscombe,                            email:biddisco @ cscs.ch
http://www.cscs.ch/about/BJohn.php
CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07
Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82