[vtkusers] Rendering volume on wxWidget, why there is a 2d cross on the viewport

[jonny]

Hi, all:

    I am rendering a volume on the wxWidget, everything is ok but there is a
2d cross (dash line, may be the axes) appears under some view direction. I
am sure it is not in the volume because it does not move when I move the
volume in the viewport. Can anyone tell me what the problem is?

<http://vtk.1045678.n5.nabble.com/file/t342139/IMG_3729.jpg> 



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