[vtkusers] Help about refreshing of vtk window

[David Doria]

2011/10/2 Rong Xu <xurong1981 at gmail.com>:
> Hi, David Doria :
>
> Thank you very much for your response!
>
> 2011/10/3 David Doria <daviddoria at gmail.com>
>>
>> 2011/10/2 Rong Xu <xurong1981 at gmail.com>:
>> > Hi:
>> >
>> > I am a new man in using VTK library, and I want to realize refreshing
>> > the
>> > VTK windows when I change the opacity value of the object shown in VTK
>> > windows. Does anybody have experience about refreshing of VTK windows?
>> > Could
>> > you please tell me how to refreshing the Object shown in VTK windows
>> > efficiently when I change the attribute of the object, such as the value
>> > of
>> > opacity?
>> >
>> > I will appreciate your advice ! Thank you!
>>
>> Can you send a code snippet and explain how it behaves vs how you want
>> it to behave?
>
> I think there are no special code, now I just renew the variables of
> vtkRenderer, vtkRenderWindow, and vtkRenderWindowInteractor, then show the
> windows again after I changed the parameters of vtkActor.
>
> But I give 2 pictures to show what I want to do. In Model-01.jpg, I set the
> value of opacity as 0.4, and in Model-02.jpg, I set the value of opacity as
> 1.0. So I want to realize refreshing the windows as soon as possible when I
> change the value of opacity from 0.4 to 1.0. Because when I renew the
> variables of vtkRenderer, vtkRenderWindow, and vtkRenderWindowInteractor, it
> takes some time to re-draw the VTK windows. Is there any method for this
> purpose, such as refreshing of vtkActor or vtkRenderWindow?
>

Please keep the discussion on the mailing list so that everyone can
help and benefit from the discussion.

What do you mean by "renew the variables"? I think you might just not
be calling Render() on the vtkRenderWindow?

David