[vtkusers] vtkImageCanvasSource2D err

[John Biddiscombe]

I get 3 or 4 black pixels (in a horizontal line) in the lower left corner
and several more near the lower right, but not near centre.
Amd Athlon, Rubbish old GeForce 2,.

JB

----- Original Message ----- 
From: "Dean Inglis" <dean.inglis at camris.ca>
To: "vtkusers archive" <vtkusers at vtk.org>
Sent: Wednesday, May 05, 2004 9:01 PM
Subject: [vtkusers] vtkImageCanvasSource2D err


> can someone please verify that vtkImageCanvasSource2D
> is not behaving correctly with the follwing tcl script?
> I am observing corrupted pixels at the lower left corner
> of the resultant image and at a spot lower right of
> center.  The fill operation should give a completely
> red image.
>
> package require vtk
> package require vtkinteraction
>
> vtkImageCanvasSource2D acanvas
> [acanvas GetOutput] SetExtent 0 255 0 255 0 0
> [acanvas GetOutput] SetNumberOfScalarComponents 3
> [acanvas GetOutput] SetScalarTypeToUnsignedChar
> [acanvas GetOutput] SetSpacing 1 1 1
> acanvas SetDrawColor 255 0 0
> acanvas FillPixel 1 1
> acanvas Update
>
> vtkImageViewer viewer
> viewer SetInput [acanvas GetOutput]
> viewer SetColorWindow 255
> viewer SetColorLevel 127
> viewer Render
>
>
> Have I missed something here?  Changing the fill seed
> to some other location does not change things.
> Writing the output to a png or bmp file shows the same
> output presented by the viewer.
>
> Build is Proximal experimental dashboard.
>
> Dean
>
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