Many thanks for the feedback. Pls see below:
Clinton Stimpson wrote:
Dominik Szczerba wrote:
My pipeline works all right and gets updated on demand properly. I
achieve it by connecting spinboxes/lineedits etc. to functions that
set parameters of my filters before I explicitly hit the final 'apply'
button. The annoying problem is that the pipeline gets executed also
when I interact with the render window (click to rotate etc.). I did
not (intend to) set up such functionality, I want the pipeline to
execute only after an explicit button click (like in paraview). How do
I find out who is triggering the pipeline behind my back?
- Dominik
ParaView queues up the changes, and only applies them to the filters
when the apply button is pressed.
If you're applying them on the filters when spinboxes/lineedits change,
and a menu comes and goes over the graphics view, that could trigger an
update you might not want.
How about your apply button gathering the parameters from the widgets on
the form and applying them?
That was my original idea and implementation: However, this way the
WHOLE pipeline ALWAYS gets re-executed. Concrete example pipeline:
extractVOI->GaussianSmooth. If Apply button gathers the parameters and
sets them to the filters every time, changing e.g. only smoothing params
(while keeping the same VOI) still causes both filters to re-execute.
This should not happen, as VOI should be up to date. The same is true
for more filters, e.g. Threshold: re-feeding the same parameters and/or
arrays to process somehow fools the up-to-date'ness of the filter. Am I
expected to walk around the problem by bookkeeping the changing params
and the up-to-date'ness myself?
Note that this is different to paraview, where you have only one filter
per menu entry and can explicitly request changes. Here I have one
meta-filter, consisting of several atomic ones.
After your remark I feel the original approach was the right one. But
then how do I only request the update if a REAL CHANGE and not only a
FORMAL SET of parameters is the case?
regards,
Dominik
Clint
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