[vtkusers] vtkPolyData, mixing vtktriangle and vtkquad

[Bryn Lloyd]

I am not sure if I completely understand your question, but here is a guess
at an answer.

 

Assuming you have constructed cell arrays for triangles, vertices etc. for
the a polydata either by calling:

 

pd->SetPolys(triangles);

pd->SetLines(lines);

pd->SetVertices(verts);

 

or by calling 

 

pd->Allocate();

 

 

Now you can add e.g. a quad by calling:

 

vtkIdType pts[4] = {n1,n2,n3,n4};

pd->InsertNextCell(VTK_QUAD, 4, pts);

 

and an extra triangle by calling:

 

vtkIdType pts[3] = {n1,n2,n3 };

pd->InsertNextCell(VTK_TRIANGLE, 3, pts);

 

 

 

 

 

 

 

 

 

 

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf
Of pablo p del castillo
Sent: Monday, November 07, 2011 6:02 PM
To: vtkusers at vtk.org
Subject: [vtkusers] vtkPolyData, mixing vtktriangle and vtkquad

 

Hello,

 

How is possible after SetPolys with quads to vtkPolyData, after add
vtkTriangle?

 

It seems that AddPolys is not working.

 

Thanks,

 

Pablo

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