[vtkusers] very narrow and long rectangle drawn with VTK_TRIANGLE_STRIP .when zooming small to make the rectangle seems like a line , it shows and disapears while zooming.why

[扬帆]

Hi,everyone.
     I want to know what may cause this and how to fix it?
    Thanks a lot.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20090801/84979774/attachment.htm>