[vtkusers] vtkMergePoints usage (Steve Boyd)

[Doug McCorkle]

Does that also work for unstructured grids? So do you create a 
ploydataset from the unsgrid and then clean it?

On Thursday, October 9, 2003, at 09:54  AM, Turner, Wesley D (Research) 
wrote:

> Did you try vtkCleanPolyData?
>
> - Wes
>
> -----Original Message-----
> From: Doug McCorkle [mailto:mccdo at iastate.edu]
> Sent: Thursday, October 09, 2003 8:02 AM
> To: vtkusers at vtk.org
> Cc: 'Steve Boyd'
> Subject: [vtkusers] vtkMergePoints usage (Steve Boyd)
>
>
> Steve,
>      We also are having the same problems as you. I have been unable to
> figure out how to use vtkMergePoints to accomplish this task. I have
> also been unable to figure out an alternate way to remove coincident
> points. If anyone has sample code that does this I would be interested
> in the code.
> Doug
>
> Message: 3
> Date: Wed, 08 Oct 2003 15:05:55 -0700
> From: Steve Boyd <skboyd at ucalgary.ca>
> Organization: University of Calgary
> To: vtk <vtkusers at public.kitware.com>
> Subject: [vtkusers] vtkMergePoints usage
>
> Hi,
>
> I am trying to locate duplicate points using vtkMergePoints.  I am
> successful at finding, for any given point, the closest point using
> ->FindClosestPoint(p1), but I when I try running ->IsUniquePoint(p1) I
> get a runtime error (memory).  Am I using this class incorrectly?
>
>     float p1[3];
>     p1[0] = 2.0;
>     p1[1] = 1.0;
>     p1[2] = 0.5;
>
>     vtkMergePoints *pointLocator = vtkMergePoints::New();
>       pointLocator->SetDataSet(ug);	// ug is vtkUnstructuredGrid
> data
>       pointLocator->BuildLocator();
>
>     // this line works fine
>     cout << "Closest point is at id " <<
> pointLocator->FindClosestPoint(p1) << endl;
>
>     // this line gives a runtime error (regardless if p1 is unique or
> not).
>     cout << "Is it inserted? " << pointLocator->IsInsertedPoint(p1) <<
> endl;
>
> I'm guessing that this isn't a bug, but rather my incorrect usage of 
> the
> class.  Can somebody tell me how to use it properly?
>
> Regards,
>
> Steve
>
> -- 
> Steven Boyd
>
> PhD, PEng
> Assistant Professor
> Department of Mechanical and Manufacturing Engineering
> University of Calgary
> 2500 University Drive, N.W.
> Calgary, Alberta, Canada, T2N 1N4
>
> tel. 1.403.220.4173  fax. 1.403.282.8406  skboyd at ucalgary.ca
> -------------------------------------------------------------------
>
>
>
>
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