[vtkusers] vtkFeatureEdges - Order of Boundary Points

[Mario Richtsfeld]

Hi All VTK - Users,
 
after a performing a constrained vtkDelaunay2D, I extract the outer boundary
of the mesh using the vtkFeatureEdges filter. As a result, I obtain the mesh
boundary described as a sum of all the boundary segments (edges).
 
Now I need the order of the boundary points, but I can’t get it!
 
Does anybody know if an existing vtk filter could do the job?
 
I also tested the vtkStripper and vtkTubeFilter, but without any success!
 
What’s wrong?
 
Thanks
 
Mario Richtsfeld

 

vtkDelaunay2D *pDelaunay = vtkDelaunay2D::New();

pDelaunay->SetInput(pPDTop);

pDelaunay->Update();

 

vtkFeatureEdges *feature = vtkFeatureEdges::New();

feature->SetInputConnection(pDelaunay->GetOutputPort());

feature->BoundaryEdgesOn();

feature->FeatureEdgesOff();

feature->NonManifoldEdgesOff();

feature->ManifoldEdgesOff();

feature->SetFeatureAngle(0);

feature->Update();

 

vtkStripper *cutStrips = vtkStripper::New(); //Forms loops (closed
polylines) from cutter

cutStrips->SetInputConnection(feature->GetOutputPort());

cutStrips->Update();

 

vtkTubeFilter *feTubes = vtkTubeFilter::New();

feTubes->SetInput(cutStrips->GetOutput());

feTubes->SetRadius(0.5);

 

 

________________________________________

Dipl.-Ing.(FH) Mario Richtsfeld

Research assistant

AUTOMATION & CONTROL INSTITUTE | ACIN

VIENNA UNIVERSITY OF TECHNOLOGY

Gußhausstraße 27-29 | 376. 1040 Wien 

Tel.: +43 (0)1 - 58801 - 77663 

Fax.: +43 (0)1 - 58801 - 37699 

rm at acin.tuwien.ac.at | www.acin.tuwien.ac.at

 

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