[Paraview] Reader did not create output

[pat marion]

Sorry I'm not offering any help to your specific problem... but I just
wanted to say that debugging via cout/printf is a perfectly good way
to debug.  If you only change a cxx file and not a header, it should
only recompile one file and then do some linking, should only be 10
seconds to a minute depending on how old your computer is, not much
longer than firing up gdb, anyway.  Goodluck!

Pat

On Sat, Jan 30, 2010 at 7:23 PM, David Doria <daviddoria at gmail.com> wrote:
> On Sat, Jan 30, 2010 at 12:55 PM, Berk Geveci <berk.geveci at kitware.com> wrote:
>> I couldn't see anything obviously wrong. Try setting a breakpoint in
>> vtkDemandDrivenPipeline::CheckDataObject right before you open the
>> file. When you walk over that function, is there an output at all? If
>> no, is DATA_TYPE_NAME() set to anything?
>
> I set a break point in CheckDataObject. I stepped through - It skips
> right to the 'else' on line 682 of vtkDemandDrivenPipeline.cxx.
>
> I've never tried debugging in paraview before - is there a way to
> check the value of DATA_TYPE_NAME() without adding an output line such
> as:
> cout << vtkDataObject::DATA_TYPE_NAME();
>
> and recompiling?
>
> It takes a long time to compile Paraview so I'm sure this is a
> terribly inefficient way to debug... but the debugger in KDevelop3 (an
> interface to gdb) doesn't show values of things when you hover the
> mouse over them so I'm not sure how to see it without using this
> method.
>
> I looked at portInfo->Request->Name->*Name in the local variables of
> the debugger and it is empty - is this the same as DATA_TYPE_NAME()?
>
> I'm not doing anything fancy - my class is derived from
> vtkPolyDataAlgorithm and I haven't changed anything related to the
> pipeline except for:
> this->SetNumberOfInputPorts(0);
>
> so shouldn't this "just work"?
>
> Thanks,
>
> David
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