[vtkusers] how to write an unstructured grid into a stl file

[Reza Faieghi]

Thanks David. That solved the problem!

Reza

On Nov 13, 2016 3:25 PM, "David Cole" <DLRdave at aol.com> wrote:

> Have you tried:
>
> #include "vtkDataSetSurfaceFilter.h"
>
> in that source file?
>
>
>
> On Sun, Nov 13, 2016 at 12:03 PM, Reza Faieghi <mfaieghi at westerneng.ca>
> wrote:
> > Hi Utkarsh,
> >
> > Thanks for the reply. I use the following code just like yours but I get
> > some errors that dsf is a pointer to an incomplete class type:
> >
> > 1 vtkSmartPointer<vtkUnstructuredGrid> ug =
> > vtkSmartPointer<vtkUnstructuredGrid>::New();
> > 2 vtkSmartPointer<vtkDataSetSurfaceFilter> dsf =
> > vtkSmartPointer<vtkDataSetSurfaceFilter>::New();
> > 3 dsf->SetInputData(ug);
> > 4 dsf->Update();
> > 5 vtkSmartPointer<vtkTriangleFilter> triangleFilterx =
> > vtkSmartPointer<vtkTriangleFilter>::New();
> > 6 triangleFilterx->SetInputConnection(dsf);
> > 7 triangleFilterx->Update();
> > 8 vtkSmartPointer<vtkSTLWriter> stlWriter =
> > vtkSmartPointer<vtkSTLWriter>::New();
> > 9 std::string name = "file.stl";
> > 10 stlWriter->SetFileName(file.c_str());
> > 11 stlWriter->SetInputConnection(triangleFilterx->GetOutputPort());
> > 12 stlWriter->Write();
> >
> > At line 3, I am getting these errors:
> >
> >         use of undefined type 'vtkDataSetSurfaceFilter'
> >         'SetInputData' : is not a member of
> > 'vtkSmartPointer<vtkDataSetSurfaceFilter>'
> >         'Update' : is not a member of
> > 'vtkSmartPointer<vtkDataSetSurfaceFilter>'
> >
> > I think the way that I am using vtkDataSetSurfaceFilter is not correct.
> How
> > can I use it in a proper way?
> >
> > Thanks,
> > Reza
> >
> >
> > On Sun, Nov 13, 2016 at 10:55 AM, Utkarsh Ayachit
> > <utkarsh.ayachit at kitware.com> wrote:
> >>
> >> vtkDataSetSurfaceFilter is indeed the way to go. You should be able to
> set
> >> an unstructrued grid as input. Not sure why it didn't work for you?
> Doesn't
> >> the following code work:
> >>
> >> vtkUnstructuredGrid* ug = ...
> >> vtkDataSetSurfaceFilter* dsf = ...
> >> dsf->SetInputDataObject(ug);
> >>
> >> Utkarsh
> >>
> >> On Sun, Nov 13, 2016 at 5:20 AM, Reza Faieghi <mfaieghi at westerneng.ca>
> >> wrote:
> >>>
> >>> Hello,
> >>>
> >>> I am wondering is there a way to write an unstructured grid into an STL
> >>> file?
> >>>
> >>> I am not sure if this is correct but I realized that for writing into
> an
> >>> STL file, I have to create a triangle filter from my geometry. And, to
> >>> create the triangle filter, I need to extract surface of my
> unstructured
> >>> grid. I tried to use vtkDataSetSurfaceFilter for this purpose, but I
> was not
> >>> able to set an input to an instance of this class from a
> >>> vtkUnstructuredGrid.
> >>>
> >>> I am not sure if my approach is correct. I would be really grateful if
> >>> you have any idea how to solve this.
> >>>
> >>> Many Thanks,
> >>> Reza
> >>>
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> >
> >
> >
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