[vtkusers] about GetPixelData method

[Francois Bertel]

Mahmoud Ismail wrote:

>  I found the GetPixelData method In vtkWindow Class
>  but it takes five integer inputs and i don't what are they refer to

Thanks to pointed out this missing documentation. I committed the change to CVS, you should see the right documentation
on-line tomorrow.

Reading through the implementation in Rendering/vtkOpenGLRenderWindow, I think the arguments are:

virtual unsigned char *GetPixelData(int x, int y, int x2, int y2,
                                      int front) = 0;
virtual int GetPixelData(int x, int y, int x2, int y2, int front,
                           vtkUnsignedCharArray *data) = 0;


(x,y) is any corner of the rectangle. (x2,y2) is its opposite corner on the diagonal.

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François Bertel, PhD  | Kitware Inc. Suite 204
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