[vtkusers] Screenshot Error

[Jothy]

Can you check the output of your imgFilter is as expected?

Jothy

On Wed, Oct 12, 2011 at 11:21 AM, Wenlong Wang <scc.wwl at gmail.com> wrote:

> What do you mean by fill image data?
>
> Here is my code,
>
>     imageFilter->SetInput(renWin);
>     renWin->Finalize();
>     imageFilter->Update();
>
>     vtkJPEGWriter* jw = vtkJPEGWriter::New();
>     imageFilter->SetMagnification(
> 2);
>     imageFilter->SetInputBufferTypeToRGBA();
>     imageFilter->Update();
>     jw->SetFileName("testpicture.jpg");
>     jw->SetInput(imageFilter->GetOutput());
>     jw->Write();
>
>
> Thank you very much.
>
> Wenlong
>
>
> 2011/10/12 Jothy <jothybasu at gmail.com>
>
>> Have you filled your imaeg data first?
>>
>> Jothy
>>
>> On Wed, Oct 12, 2011 at 11:15 AM, Wenlong Wang <scc.wwl at gmail.com> wrote:
>>
>>> Dear all,
>>>
>>> As I try to catch a screen shot of my model, there is a window pops out
>>> and shows the following error information.
>>>
>>> 'ERROR: In ..\..\VTK\Filtering\vtkImageData.cxx, line 1467
>>> vtkImageData (02468790): GetScalarPointer: Pixel (0, 0, 0) not in memory.
>>>  Current extent= (0, -1, 0, -1, 0, 0)'
>>>
>>> According to this, it says the pixel at (0, 0, 0) doesn't exist. But it
>>> obviously appear in the screen.
>>>
>>> Can anyone tell me how to resolve this? Thank you very much.
>>>
>>> Wenlong
>>>
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>>
>>
>> --
>> Jothybasu K Selvaraj
>> PhD Student
>> University of Liverpool
>> Liverpool,UK
>>
>>
>


-- 
Jothybasu K Selvaraj
PhD Student
University of Liverpool
Liverpool,UK
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