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

[David Cole]

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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>>
>
>
>
> --
> PhD Candidate,
> Spencer Engineering Building Room 37
> University of Western Ontario
> London, ON, Canada, N6A 5B9
>
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