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POTrouble trying to output file using vtkOBJWriter
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  1. POTrouble trying to output file using vtkOBJWriter
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    copied!<p>I am trying to use vtkOBJWriter from David Doria to convert a .vtk file to a .obj file. I git cloned from <a href="https://github.com/daviddoria/vtkOBJWriter" rel="nofollow">https://github.com/daviddoria/vtkOBJWriter</a>, added a build directory for the CMake and make, and altered the file vtkOBJWriterExample.cxx to:</p> <pre><code>#include &lt;vtkSmartPointer.h&gt; #include &lt;vtkPolyData.h&gt; #include &lt;vtkSphereSource.h&gt; #include &lt;vtkPolyDataReader.h&gt; #include "vtkOBJWriter.h" int main (int argc, char *argv[]) { vtkSmartPointer&lt;vtkPolyData&gt; input; std::string outputFilename; // Verify command line arguments if(argc &gt; 1) // Use the command line arguments { if(argc != 3) { std::cout &lt;&lt; "Required arguments: InputFilename.vtp OutputFilename.obj" &lt;&lt; std::endl; return EXIT_FAILURE; } vtkSmartPointer&lt;vtkPolyDataReader&gt; reader = vtkSmartPointer&lt;vtkPolyDataReader&gt;::New(); reader-&gt;SetFileName(argv[1]); reader-&gt;Update(); input = reader-&gt;GetOutput(); outputFilename = argv[2]; } else { outputFilename = "output.obj"; vtkSmartPointer&lt;vtkSphereSource&gt; sphereSource = vtkSmartPointer&lt;vtkSphereSource&gt;::New(); sphereSource-&gt;Update(); input-&gt;ShallowCopy(sphereSource-&gt;GetOutput()); } vtkSmartPointer&lt;vtkOBJWriter&gt; writer = vtkSmartPointer&lt;vtkOBJWriter&gt;::New(); writer-&gt;SetInput(input); writer-&gt;SetFileName(outputFilename.c_str()); writer-&gt;Update(); return EXIT_SUCCESS; } </code></pre> <p>to reflect that I am using VTK 5.8.0 . When I try to do sudo ./vtkOBJWriterExample trytry1.vtk Documents/comeOn.obj , no output file is made (I don't see it in the appropriate directory). I also tried it with trytry1.vtp, and it didn't seem to work. My vtk file format is :</p> <pre><code># vtk DataFile Version 3.0 vtk output ASCII DATASET POLYDATA FIELD FieldData 3 group_id 1 1 int 0 base_index 1 3 int 0 0 0 avtOriginalBounds 1 6 double -10 10 -10 10 -10 10 POINTS 14387 float -5.10204 -2.65306 -9.69246 -5.10204 -2.75294 -9.59184 -5.37199 -2.65306 -9.59184 ... POLYGONS 28256 113024 3 0 1 2 ... POINT_DATA 14387 SCALARS hardyglobal float LOOKUP_TABLE default 3.4926 3.4926 3.4926 3.4926 3.4926 3.4926 3.4926 3.4926 3.4926 ... </code></pre> <p>which doesn't seem to match the formatting of car.vtp in the data directory, but I thought I made the appropriate changes (using the formatting of vtkPolyDataReader.h instead of vtkXMLPolyDataReader.h ). I am not sure why there is no file being outputted.</p> <p>I do not receive any error messages.</p>
 

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