[vtkusers] help

[张鑫]

hey all, 

I’m using the vtkWindowToImageFilter class for the screen shot to a image
file. I used VS2005, vtk 4.1 under the windowXP. 

 

Here is my code: 

 

     vtkRenderWindow* pRenderWindow = pWindow->getRenderWindow();

 

     vtkWindowToImageFilter* pWindowToImageFilter =
vtkWindowToImageFilter::New();

     pWindowToImageFilter->SetInput(pRenderWindow);

     pWindowToImageFilter->Update();

 

     vtkBMPWriter* pBMPWriter = vtkBMPWriter::New();

     pBMPWriter->SetInputConnection(pWindowToImageFilter->GetOutputPort());

     pBMPWriter->SetFileName("C:\\ExportRenderWindow2BMP.jpg");

 

     pRenderWindow->Render();

     pWindowToImageFilter->Modified();

pBMPWriter->Write();

 

When the render image size smaller than the screen size, in the other words,
when you can see the whole image in the screen, these code work fine;

But, when the render image size bigger than the screen size, in the other
words, after zoom in, when you can only see a part of the image, you can
only get what you see, the saved image size is same to screen’s size. 

I want to get the whole image data to image file, who can help me, thanks
for any advice!

 

 

 

 

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