[vtkusers] bugs in GetBackground()

[Sebastien BARRE]

At 9/24/2003 10:24 AM, Dubois, John R (MED) wrote:
>vtkRenderer::GetBackground() does not seem to work correctly until AFTER a 
>call to vtkRenderer::GetBackground(float*).

There is no such thing as vtkRenderer::GetBackground(), but 
vtkViewport::GetBackground(), and in any case, both GetBackground() and 
GetBackground(float*) work the same (they are actually the result of a 
vtkGetVectorMacro expansion), i.e. they just access the Background Ivar.
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