[vtkusers] How to bypass parts of the VTK pipeline

[Dan Lipsa]

Seun,
There is no flag that would remove the effects of a filter from the
pipeline. You'll have keep pointers to A and C and insert B in the pipeline
when needed and remove it when you don't.
To execute the new pipeline you'll call vktRenderWindow::Render.



On Tue, May 3, 2016 at 4:28 PM, Seun Odutola <seun at rogue-research.com>
wrote:

>   Apologies for not being clear in my initial message, what I meant to say
> was that A—>C does work. I was hoping to find out a way of having A—>B—>C
> all connected but to suppress any effect of B when I don’t need it thus
> working like (A—>C) and turn B’s effect back on when I need it. In short, I
> have A(probe filter) —> B(ClipPolyData) —> C(PolyDataMapper) all connected
> but since one won’t be clipping much in the application am working with I
> want to keep the connection but just completely ignore B’s effect when
> clipping isn’t being executed (which is most of the time during normal
> operations) and vice versa turn it back on for just clipping.
>
> On May 2, 2016, at 4:36 PM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>
> Seun,
> What you tried should work. Call SetInputConnection on C with the output
> port of A and then call vktRenderWindow::Render.
> This should execute A->C
> Try setting a breakpoint on RequestUpdate for A, B and C to see what gets
> called.
>
>
>
> On Mon, May 2, 2016 at 4:19 PM, Seun Odutola <seun at rogue-research.com>
> wrote:
>
>> Hello Everyone,
>>
>>         After researching & googling for answers to no avail, I was
>> wondering if someone here could help me regarding a situation am facing. To
>> keep things simple let’s say I have 3 nodes, A, B, C. A is a probeFilter, B
>> is a ClipPolyData and C is a PolyDataMapper. I currently have a pipeline
>> A—> B—>C and I would like to occasionally ignore B and thus have A—>C
>> directly, how do I achieve this. I have tried to connect directly A—> to C
>> which does nothing (unless am doing something wrong). Hoping someone could
>> point me in the right direction.
>>
>> Regards,
>>    Seun
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>
>
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