[vtkusers] Re: correct way to determine vtkStreamTracerReasonForTermination?

[tom fogal]

Thank you, Goodwin, for the prompt reply. I got things working shortly
after.

I started a vtkStreamTracer entry on the wiki, currently its just a
'how to access ReasonForTermination' guide. I'd like to see another
quick excerpt on migrating from vtkStreamLine to vtkStreamTracer
eventually. I'll put it on the bottom of my ToDo list...
It can be found at http://www.vtk.org/Wiki/VtkStreamTracer
It is not currently linked to from anywhere.

Finally I noted from the previous thread in april,
"Brad Kind is working on a new pipeline architecture that will allow
doing this much more easily." Whats the status of this? Is it a back
burner dream or more like something that would show up in the 4.4
release? How will the new architecture be different?
Just curious. Sorry to beat a dead horse / thread.

-tom

 <cfar38$rtf$1 at sea.gmane.org>"Goodwin Lawlor" writes:
>Hi Tom,
>
>This came up on the list last April. Here's the last of the thread:
>http://public.kitware.com/pipermail/vtkusers/2004-April/073493.html
>
>
>The synopsis went something like: the Get****() fuctions are for accessing
>properties of a class not the outputs, which the ReasonForTermination array
>is. The output is accessed through GetOutput() so its updated correctly.
>There's new pipeline coming soon that should take care of the complexity of
>having more than just a data object in the ouput.
>
>
>hth
>
>Goodwin
>
>
>"tom fogal" <tfogal at apollo.sr.unh.edu> wrote in message
>news:200408101517.i7AFHtsp031001 at apollo.sr.unh.edu...
>> Hi all, I've been looking in to determining what causes my stream lines
>> to end when they do, and vtkStreamTracer seems to have an enum
>> specifically for this purpose -- ReasonForTermination. I am a little
>> concerned because it seems to be very difficult to access, and so I'm
>> starting to believe that I'm not accessing it in the right way.
>>
>> I would expect some sort of GetReasonForTermination() function that
>> returns one of the valid values in the enum, but I can't seem to find
>> one. From looking at the code, it seems like I need to get the output's
>> cell data, and from that I can extract a vtkDataArray* which is really
>> a vtkIntArray*. Then the first element (err, tuple) of that Array will
>> be the ReasonForTermination.
>>
>> I feel like I'm doing things the wrong way, that I am missing some
>> blatant interface. Has anyone used this information before? Could you
>> clarify or redirect me towards what I should be doing to get this data?
>>
>> Thanks!
>>
>> -tom
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