Difference between revisions of "VTK/Examples/Cxx/Filtering/CombinePolyData"

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(Replaced content with "= '''See [https://lorensen.github.io/VTKExamples/site/Cxx/Filtering/CombinePolyData CombinePolyData] on the new [https://lorensen.github.io/VTKExamples/site/ VTKExamples w...")
 
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<div class="floatcenter">[[File:VTK_Examples_Baseline_Filtering_TestCombinePolyData.png]]</div>
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= '''See [https://lorensen.github.io/VTKExamples/site/Cxx/Filtering/CombinePolyData CombinePolyData] on the new [https://lorensen.github.io/VTKExamples/site/ VTKExamples website].''' =
This example reads two .vtp files (or produces them if not specified as command line arguments), combines them, and displays the result to the screen.
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'
 
 
==CombinePolyData.cxx==
 
<source lang="cpp">
 
#include <vtkVersion.h>
 
#include <vtkSmartPointer.h>
 
#include <vtkPolyData.h>
 
#include <vtkSphereSource.h>
 
#include <vtkConeSource.h>
 
#include <vtkXMLPolyDataReader.h>
 
#include <vtkCleanPolyData.h>
 
#include <vtkAppendPolyData.h>
 
#include <vtkPolyDataMapper.h>
 
#include <vtkActor.h>
 
#include <vtkRenderWindow.h>
 
#include <vtkRenderer.h>
 
#include <vtkRenderWindowInteractor.h>
 
 
 
int main(int argc, char *argv[])
 
{
 
  vtkSmartPointer<vtkPolyData> input1 =
 
    vtkSmartPointer<vtkPolyData>::New();
 
  vtkSmartPointer<vtkPolyData> input2 =
 
    vtkSmartPointer<vtkPolyData>::New();
 
 
 
  if(argc == 1) //command line arguments not specified
 
    {
 
    vtkSmartPointer<vtkSphereSource> sphereSource =
 
      vtkSmartPointer<vtkSphereSource>::New();
 
    sphereSource->SetCenter(5,0,0);
 
    sphereSource->Update();
 
 
 
    input1->ShallowCopy(sphereSource->GetOutput());
 
 
 
    vtkSmartPointer<vtkConeSource> coneSource =
 
      vtkSmartPointer<vtkConeSource>::New();
 
    coneSource->Update();
 
 
 
    input2->ShallowCopy(coneSource->GetOutput());
 
    }
 
  else
 
  {
 
    if(argc != 3)
 
      {
 
      std::cout << "argc = " << argc << std::endl;
 
      std::cout << "Required arguments: File1 File2" << std::endl;
 
      return EXIT_FAILURE;
 
      }
 
    std::string inputFilename1 = argv[1];
 
    std::string inputFilename2 = argv[2];
 
    vtkSmartPointer<vtkXMLPolyDataReader> reader1 =
 
      vtkSmartPointer<vtkXMLPolyDataReader>::New();
 
    reader1->SetFileName(inputFilename1.c_str());
 
    reader1->Update();
 
    input1->ShallowCopy(reader1->GetOutput());
 
   
 
    vtkSmartPointer<vtkXMLPolyDataReader> reader2 =
 
      vtkSmartPointer<vtkXMLPolyDataReader>::New();
 
    reader2->SetFileName(inputFilename2.c_str());
 
    reader2->Update();
 
    input2->ShallowCopy(reader2->GetOutput());
 
  }
 
 
 
  //Append the two meshes
 
  vtkSmartPointer<vtkAppendPolyData> appendFilter =
 
    vtkSmartPointer<vtkAppendPolyData>::New();
 
#if VTK_MAJOR_VERSION <= 5
 
  appendFilter->AddInputConnection(input1->GetProducerPort());
 
  appendFilter->AddInputConnection(input2->GetProducerPort());
 
#else
 
  appendFilter->AddInputData(input1);
 
  appendFilter->AddInputData(input2);
 
#endif
 
  appendFilter->Update();
 
 
 
  // Remove any duplicate points.
 
  vtkSmartPointer<vtkCleanPolyData> cleanFilter =
 
    vtkSmartPointer<vtkCleanPolyData>::New();
 
  cleanFilter->SetInputConnection(appendFilter->GetOutputPort());
 
  cleanFilter->Update();
 
 
 
  //Create a mapper and actor
 
  vtkSmartPointer<vtkPolyDataMapper> mapper =
 
    vtkSmartPointer<vtkPolyDataMapper>::New();
 
  mapper->SetInputConnection(cleanFilter->GetOutputPort());
 
 
 
  vtkSmartPointer<vtkActor> actor =
 
    vtkSmartPointer<vtkActor>::New();
 
  actor->SetMapper(mapper);
 
 
 
  //Create a renderer, render window, and interactor
 
  vtkSmartPointer<vtkRenderer> renderer =
 
    vtkSmartPointer<vtkRenderer>::New();
 
  vtkSmartPointer<vtkRenderWindow> renderWindow =
 
    vtkSmartPointer<vtkRenderWindow>::New();
 
  renderWindow->AddRenderer(renderer);
 
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
 
  renderWindowInteractor->SetRenderWindow(renderWindow);
 
 
 
  //Add the actors to the scene
 
  renderer->AddActor(actor);
 
  renderer->SetBackground(.3, .2, .1); // Background color dark red
 
 
 
  //Render and interact
 
  renderWindow->Render();
 
  renderWindowInteractor->Start();
 
 
 
  return EXIT_SUCCESS;
 
}
 
</source>
 
 
 
{{VTKCMakeLists|{{SUBPAGENAME}}}}
 
 
 
[[Category:VTKNotBuilding]]
 

Latest revision as of 23:01, 30 July 2019

See CombinePolyData on the new VTKExamples website.

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