[vtkusers] Convert vtkActor to vtkPolyData

[David Gobbi]

Hi Agatte,

You cannot get the data from the actor until you have done the following:
1) set a mapper for the actor
2) set an input for the mapper

The actor has no data unless something gives the actor some data.

  David


On Sun, Mar 2, 2014 at 8:58 AM, Cory Quammen <cory.quammen at kitware.com> wrote:
> Would you be able to post a fully compilable program that has your
> original problem to help debug this? It's a bit of work on your part,
> but it is the easiest way for people on the list to help you.
>
> Thanks,
> Cory
>
> On Sun, Mar 2, 2014 at 10:42 AM, agatte <agatakrason at gmail.com> wrote:
>> 1) refLower = vtkPolyData::SafeDownCast(
>> actorLower->GetMapper()->GetInputAsDataSet());
>>     I received an exception concering  :
>>     Unhandled exception at 0x0f0fb5e1 (vtkFiltering.dll) : 0xC0000005:
>> Access violation reading location 0x00000034.
>>
>>
>> 2) I tried :
>> actorLower->GetMapper()->GetInputAsDataSet()->Print(std::cout);
>>     It doesn't compiled.
>>     error C2664: 'vtkPolyData::SafeDownCast' : cannot convert parameter 1
>> from 'void' to 'vtkObjectBase *'
>>
>>
>>
>>
>> 2014-03-02 16:01 GMT+01:00 Cory Quammen-2 [via VTK] <[hidden email]>:
>>>
>>> What does
>>>
>>> actorLower->GetMapper()->GetInputAsDataSet()->Print(std::cout);
>>>
>>> report?
>>>
>>> On Sun, Mar 2, 2014 at 9:52 AM, agatte <[hidden email]> wrote:
>>>
>>> > Thanks for quick reply Cory.
>>> >
>>> > I tried it but it doesn't work ...
>>> >
>>> >
>>> >
>>> > --
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>>
>>
>> ________________________________
>> View this message in context: Re: Convert vtkActor to vtkPolyData
>>
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>>
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