[vtkusers] Re: Draw and Color Polygons

[Janny Dong]

A little bit update... I just tried out vtkTriangleFilter. It almost worked
except warning messages:

Warning: In \VTK-503\vtk-5.0.3\Filtering\vtkPolygon.cxx, line 613
vtkPolygon (01929088): Degenerate polygon encountered during triangulation

I used vtkCleanPolyData before the filter, but I still got the message. I'm
not sure how to deal with the bad triangles yet... The map I got is
attached. It looks better except the holes within the polygons.

Could someone share some experience?

Thanks!
Janny


On 9/30/07, Janny Dong <janny.dong at gmail.com> wrote:
>
> Hello,
>
> I have the latitude and longitude data for the lake areas and I put them
> in to a vtk file. There are three polygons. I set scalars and a lookup table
> in the data file to color them with one color-blue, for example. My test
> results are in the attached pictures.  If I draw lines, the map looks
> perfect. However, if they are displayed as polygons, I want polygons. Then
> the map doesn't look right, neither does the color. Why do I get black
> areas? How can I draw the polygons properly?
>
> Any thought will be appreciated.
>
> Best,
> Janny
>
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