[vtkusers] Triangle prunning

Eduardo Suarez-Santana esuarez at itccanarias.org
Wed Jan 26 08:41:21 EST 2011


Sorry for the late response.

I'm having this issue just with Marching Cubes. You can test with this
example (~500KB):

http://dl.dropbox.com/u/393132/marching%20test.tar.bz2

-Eduardo


El 11/10/10 22:39, Bill Lorensen escribió:
> This situation should not happen with Marching Cubes. Did you run a
> decimation algorithm after Marching Cubes?
>
> On Mon, Oct 11, 2010 at 7:28 AM, Eduardo Suarez-Santana
> <esuarez at itccanarias.org> wrote:
>>  I'm using a vtkMarchingCubes and a vtkTriangleFilter to get a
>> triangular mesh from a 3-d image dataset.
>>
>> However, I get a triangular mesh with some extra-triangles on it. That
>> is, I get a triangle sharing one edge (let's say edge X) with the mesh,
>> and with its opposite vertex just belonging to this triangle. In other
>> words, edge X belongs to three triangles, two from the correct mesh, one
>> from an extra triangle.
>>
>> Is there a way to avoid the creation of these triangles, or to remove
>> them? I tried vtkFeatureEdges with no success.
>>
>> Thanks,
>> -Eduardo
>>
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