[vtkusers] A simple VTK file format definition issue?

[Alex Southern]

Aha yes they are,  and they could potentially not be in a single plane, 
is that a problem?

Cheers
A.

On 6/30/2012 1:22 PM, David E DeMarle wrote:
>
> Are the last two polygons concave?
>
> On Jun 30, 2012 5:58 AM, "Alex Southern" <mrapsouthern at gmail.com 
> <mailto:mrapsouthern at gmail.com>> wrote:
>
>     Hi,
>
>     Iver been looking at this for a couple of hours and I just cant
>     find the probelm.
>     What is wrong with this geometry definition?
>
>     The last 2 polygons do not show up correctly, they produce the
>     desired polygon plus some additional unwanted planes, that flicker
>     as you rotate the model. The problem must be in this definition as
>     it also occurs in Paraview.
>
>     Any help, have i got the format wrong or something?
>
>     Thanks
>     A.
>
>     # vtk DataFile Version 3.0
>     my VTK file
>     ASCII
>     DATASET POLYDATA
>     POINTS 16 float
>     4.000000 3.000000 3.000000
>     4.000000 0.000000 3.000000
>     4.000000 0.000000 0.000000
>     4.000000 3.000000 0.000000
>     6.000000 3.000000 0.000000
>     6.000000 7.000000 0.000000
>     6.000000 7.000000 3.000000
>     6.000000 3.000000 3.000000
>     3.000000 7.000000 0.000000
>     3.000000 7.000000 3.000000
>     3.000000 4.000000 0.000000
>     3.000000 4.000000 3.000000
>     0.000000 4.000000 0.000000
>     0.000000 4.000000 3.000000
>     0.000000 0.000000 0.000000
>     0.000000 0.000000 3.000000
>     POLYGONS 10 58
>     4 0 1 2 3
>     4 4 5 6 7
>     4 5 8 9 6
>     4 8 10 11 9
>     4 10 12 13 11
>     4 12 14 15 13
>     4 15 14 2 1
>     4 0 3 4 7
>     8 4 3 2 14 12 10 8 5
>     8 6 9 11 13 15 1 0 7
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