[vtkusers] Re: Draw and Color Polygons

[Dominik Szczerba]

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I would display point ids to find the bad triangle.
- -- Dominik

Janny Dong wrote:
> 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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- --
Dominik Szczerba, Ph.D.
Computer Vision Lab CH-8092 Zurich
http://www.vision.ee.ethz.ch/~domi
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