[vtkusers] Update() vs. UpdateWholeExtent()

[David Gobbi]

Hi Chris,

Usually they do exactly the same thing.  The only time they don't
is if you call SetUpdateExtent(int extent[6]) before calling Update().
In that case, the Update() call will only update the given extent.
But by default, Update() will update the whole extent.

 - David


On Mon, Jan 24, 2011 at 2:25 PM, chrisyeshi <chrisyeshi at gmail.com> wrote:
>
> In vtk, there are many classes that have Update() and UpdateWholeExtent()
> What are the differences between them? and when do I use one of them?
> for example, vtkImageReslice?
>
> Thanks!
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