Added cell to point data conversion step.

vtu_to_vti_converter/source/main.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 #include <string>
 
+#include <vtkCellDataToPointData.h>
 #include <vtkDataArraySelection.h>
 #include <vtkDataObject.h>
 #include <vtkImageData.h>
@@ -17,7 +18,8 @@ std::int32_t main(std::int32_t argc, char** argv)
   auto filepath  = std::string(argv[1]);
 
   auto reader    = vtkSmartPointer<vtkXMLUnstructuredGridReader>::New();
-  auto converter = vtkSmartPointer<vtkResampleToImage>          ::New();
+  auto converter = vtkSmartPointer<vtkCellDataToPointData>      ::New();
+  auto resampler = vtkSmartPointer<vtkResampleToImage>          ::New();
   auto writer    = vtkSmartPointer<vtkXMLImageDataWriter>       ::New();
 
   std::cout << "Reading unstructured grid.\n";
@@ -28,15 +30,22 @@ std::int32_t main(std::int32_t argc, char** argv)
   reader   ->Update                   ();
   auto input_data     = reader->GetOutput();
 
-  std::cout << "Converting unstructured grid to structured grid.\n";
+  std::cout << "Converting cell data to point data.\n";
   converter->SetInputDataObject       (input_data);
-  converter->SetUseInputBounds     (true);
-  converter->SetSamplingDimensions (std::stoi(argv[2]), std::stoi(argv[3]), std::stoi(argv[4]));
+  converter->SetPassCellData          (false);
+  converter->SetContributingCellOption(vtkCellDataToPointData::ContributingCellEnum::All);
   converter->Update                   ();
-  auto output_data = converter->GetOutput();
+  auto converted_data = converter->GetOutput();
+
+  std::cout << "Resampling unstructured grid to structured grid.\n";
+  resampler->SetInputDataObject       (converted_data);
+  resampler->SetUseInputBounds        (true);
+  resampler->SetSamplingDimensions    (std::stoi(argv[2]), std::stoi(argv[3]), std::stoi(argv[4]));
+  resampler->Update                   ();
+  auto resampled_data = resampler->GetOutput();
 
   std::cout << "Writing structured grid.\n";
-  writer   ->SetInputData          (output_data);
+  writer   ->SetInputData             (resampled_data);
   writer   ->SetFileName              ((filepath.substr(0, filepath.size() - 3) + std::string("vti")).c_str());
   writer   ->Update                   ();