[vtk-developers] Status of AddActor(), AddActor2D(), AddVolume() vs AddViewProp()

[David E DeMarle]

I'm in Sean's camp. One class to rule them all is easier to get your head
around.


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909


On Wed, Aug 28, 2013 at 7:25 PM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> I think from a user point of view, not being concerned about inheritance,
> the old names make sense.
>
>
>
> On Wed, Aug 28, 2013 at 4:59 PM, Sean McBride <sean at rogue-research.com>wrote:
>
>> On Wed, 28 Aug 2013 16:37:05 -0400, Bill Lorensen said:
>>
>> >I think AddActor(), AddActor2D(), and AddVolume() are more descriptive
>> than
>> >AddViewProp even though they are just wrappers.
>>
>> Be that as it may, I think it's pretty weird for someone starting with
>> VTK 6.
>>
>> Class hierarchy reminder:
>>
>> vtkObject -> vtkProp -> vtkProp3D -> vtkActor
>> vtkObject -> vtkProp -> vtkProp3D -> vtkVolume
>> vtkObject -> vtkProp -> vtkActor2D
>>
>> The newer AddViewProp() takes a vtkProp*, which makes sense, as it works
>> with all 3 types.
>>
>> The older methods AddActor(), AddActor2D(), and AddVolume() strangely all
>> also take a vtkProp*, that's pretty weird given their name.  ex: you'd
>> think AddVolume() would take a vtkVolume*, no?  Why should it accept any
>> vtkProp subclass?
>>
>> It's also weird that AddActor() and AddVolume() come from vtkRenderer,
>> while AddActor2D() comes from the superclass vtkViewPort.
>>
>> How to explain all this to someone new to VTK 6?
>>
>> It seems like cruft to me.  IMNSHO, using only AddViewProp() seems
>> preferable, which is why I'd like to do the cleanup and eventually wrap the
>> old three in VTK_LEGACY.
>>
>> Cheers,
>>
>> --
>> ____________________________________________________________
>> Sean McBride, B. Eng                 sean at rogue-research.com
>> Rogue Research                        www.rogue-research.com
>> Mac Software Developer              Montréal, Québec, Canada
>>
>>
>>
>
>
> --
> Unpaid intern in BillsBasement at noware dot com
>
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