MantisBT - VTK
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IDProjectCategoryView StatusDate SubmittedLast Update
0000832VTK(No Category)public2004-05-11 17:482014-10-02 13:34
ReporterMathieu Malaterre 
Assigned ToWill Schroeder 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
ProjectTBD
Typeincorrect functionality
Summary0000832: vtkStripper does not handle properly polylines
DescriptionvtkStripper is not able to connect polylines.
Steps To Reproduce
Additional Information
Tagshackaton
Relationships
Attached Files? polyline.vtk (853) 1969-12-31 19:00
https://www.vtk.org/Bug/file/5097/polyline.vtk
? lines.vtk (150) 1969-12-31 19:00
https://www.vtk.org/Bug/file/5098/lines.vtk
patch polylines.patch (3,691) 1969-12-31 19:00
https://www.vtk.org/Bug/file/5101/polylines.patch
Issue History
Date ModifiedUsernameFieldChange
2007-08-28 13:48Zack GalbreathAssigned ToJosh Cates =>
2007-08-28 13:48Zack GalbreathStatusbacklog => @40@
2007-08-28 13:48Zack GalbreathResolutionreopened => open
2007-08-28 13:48Zack GalbreathSummaryGoodsite => vtkStripper does not handle properly polylines
2007-08-28 13:48Zack GalbreathNote Deleted: 0008285
2007-08-28 13:48Zack GalbreathProject@9@ => VTK
2008-02-06 09:54Jeff BaumesStatus@40@ => tabled
2008-02-06 09:54Jeff BaumesAssigned To => Will Schroeder
2011-06-16 13:11Zack GalbreathCategory => (No Category)
2014-05-14 06:54Matthias BlaicherNote Added: 0032628
2014-10-01 12:50Berk GeveciProject => TBD
2014-10-01 12:50Berk GeveciType => incorrect functionality
2014-10-01 12:50Berk GeveciStatusexpired => backlog
2014-10-02 10:04Will SchroederTag Attached: hackaton
2014-10-02 13:18Will SchroederNote Added: 0033489
2014-10-02 13:19Will SchroederNote Edited: 0033489bug_revision_view_page.php?bugnote_id=33489#r857
2014-10-02 13:30Will SchroederNote Added: 0033494
2014-10-02 13:30Will SchroederStatusbacklog => gerrit review
2014-10-02 13:34Will SchroederNote Added: 0033495
2014-10-02 13:34Will SchroederStatusgerrit review => closed
2014-10-02 13:34Will SchroederResolutionopen => fixed

Notes
(0001038)
Mathieu Malaterre   
2004-05-11 17:49   
Attaching dataset to reproduce bug.
(0001039)
Mathieu Malaterre   
2004-05-11 18:00   
Including demo code:

#include "vtkPolyDataReader.h"
#include "vtkStripper.h"
#include "vtkPolyData.h"
#include "vtkPolyDataWriter.h"

int main()
{
  vtkPolyDataReader *reader = vtkPolyDataReader::New();
  reader->SetFileName( "polyline.vtk");
  
    //Forms lines from cutter
    vtkStripper* cutStrips = vtkStripper::New();
    cutStrips->SetInput(reader->GetOutput());
    cutStrips->Update();

    //Defines polygons as polyline
    vtkPolyData* LinePoly = vtkPolyData::New();
    LinePoly->SetPoints((cutStrips->GetOutput())->GetPoints());
    LinePoly->SetLines(cutStrips->GetOutput()->GetLines());

    //Write PolyData to file
    vtkPolyDataWriter* wr = vtkPolyDataWriter::New();
    wr->SetFileName("Line4.vtk");
    wr->SetInput(LinePoly);
    wr->Write();
  
  reader->Delete();
  cutStrips->Delete();
  LinePoly->Delete();
  wr->Delete();
  
  return 0;
}
(0001050)
Mathieu Malaterre   
2004-05-16 16:45   
I found a patch at:
http://vtk.org/pipermail/vtkusers/2002-January/009372.html [^]

Might work, comments welcome. Also attaching it as polylines.patch
(0001227)
Goodwin Lawlor   
2004-06-30 23:54   
I tried out the patch and it works nicely.

A more efficient way would be to traverse the lines before stripping and find the "boundary points"... a line point used by only one line. These boundary points would then be used as starting points for the line stripping. The way vtkStripper is structured at the moment would make implementing this difficult though. I vote for the patch!
(0004203)
Goodwin Lawlor   
2006-06-12 05:56   
I've used this patch since mid-2004 without problems... could it be add into CVS? Is there something preventing this?

Thanks
(0032628)
Matthias Blaicher   
2014-05-14 06:54   
Hi, I'm seeing the exact same behavior on vtk 5.10.1 on Arch Linux. Is there hope of this issue being resolved inside vtk?
(0033489)
Will Schroeder   
2014-10-02 13:18   
(edited on: 2014-10-02 13:19)
The documentation has been updated. Pre-defined triangle strips and polylines are not altered nor combined into new strips or polylines. If you wish to strip these use vtkTriangleFilter to fragment the input into triangles
and lines prior to running vtkStripper.

The documentation in the class has been updated.
(0033494)
Will Schroeder   
2014-10-02 13:30   
Updated documentation.

http://review.source.kitware.com/#/t/4771 [^]
(0033495)
Will Schroeder   
2014-10-02 13:34   
Updated documentation. It may be worthwhile writing a new vtkStripper that does a better job of optimizing the creation of strips, and connects existing polylines and/or triangle strips.