線織面の作成

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#include <vtkSmartPointer.h>
 
#include <vtkDiskSource.h>
#include <vtkPolyLine.h>
#include <vtkRuledSurfaceFilter.h>
#include <vtkTransform.h>
#include <vtkTransformPolyDataFilter.h>
#include <vtkSTLWriter.h>
 
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkCellArray.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkCamera.h>
 
int main(int argc, char *argv[])
{
  if (argc != 5)
  {
    std::cout << "Required parameters: radius resolution angle(degree) translation" << std::endl;
    return EXIT_FAILURE;
  }
 
  double radius = atof(argv[1]);
  int resolution = atoi(argv[2]);
  double angle = atof(argv[3]); // degree
  double translation = atof(argv[4]);
 
  // Create first disk source.
  auto disk1 = vtkSmartPointer<vtkDiskSource>::New();
  disk1->SetInnerRadius(0.0);
  disk1->SetOuterRadius(10.0);
  disk1->SetRadialResolution(1);
  disk1->SetCircumferentialResolution(resolution);
  disk1->Update();
 
  // Create second disk source.
  auto disk2 = vtkSmartPointer<vtkDiskSource>::New();
  disk2->SetInnerRadius(0.0);
  disk2->SetOuterRadius(10.0);
  disk2->SetRadialResolution(1);
  disk2->SetCircumferentialResolution(resolution);
 
  auto transform = vtkSmartPointer<vtkTransform>::New();
  transform->RotateWXYZ(angle, 0, 0, 1);
  transform->Translate(0, 0, translation);
 
  auto transformFilter = vtkSmartPointer<vtkTransformPolyDataFilter>::New();
  transformFilter->SetTransform(transform);
  transformFilter->SetInputConnection(disk2->GetOutputPort());
  transformFilter->Update();
 
  auto points = vtkSmartPointer<vtkPoints>::New();
 
  auto polyLine1 = vtkSmartPointer<vtkPolyLine>::New();
  polyLine1->GetPointIds()->SetNumberOfIds(resolution+1);
  for (int i = 0; i < resolution; ++i)
  {
    points->InsertNextPoint(disk1->GetOutput()->GetPoint(2*i+1));
    polyLine1->GetPointIds()->SetId(i, i);
  }
  polyLine1->GetPointIds()->SetId(resolution, 0);
 
  auto polyLine2 = vtkSmartPointer<vtkPolyLine>::New();
  polyLine2->GetPointIds()->SetNumberOfIds(resolution+1);
  for (int i = 0; i < resolution; ++i)
  {
    points->InsertNextPoint(transformFilter->GetOutput()->GetPoint(2*i+1));
    polyLine2->GetPointIds()->SetId(i, resolution + i);
  }
  polyLine2->GetPointIds()->SetId(resolution, resolution);
  
  auto polyLines = vtkSmartPointer<vtkCellArray>::New();
  polyLines->InsertNextCell(polyLine1);
  polyLines->InsertNextCell(polyLine2);
 
  auto polydata = vtkSmartPointer<vtkPolyData>::New();
  polydata->SetPoints(points);
  polydata->SetLines(polyLines);
 
  vtkSmartPointer<vtkRuledSurfaceFilter> ruledSurfaceFilter =
    vtkSmartPointer<vtkRuledSurfaceFilter>::New();
  ruledSurfaceFilter->SetInputData(polydata);
  ruledSurfaceFilter->SetResolution(resolution+1, resolution+1);
  ruledSurfaceFilter->SetRuledModeToResample();
  ruledSurfaceFilter->Update();
 
  auto writer = vtkSmartPointer<vtkSTLWriter>::New();
  writer->SetFileName("ruled_surface.stl");
  writer->SetInputData(ruledSurfaceFilter->GetOutput());
  writer->Write();
 
  vtkSmartPointer<vtkRenderer> renderer = 
    vtkSmartPointer<vtkRenderer>::New();
    
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  
  vtkSmartPointer<vtkRenderWindowInteractor> interactor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow(renderWindow);
  
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(ruledSurfaceFilter->GetOutputPort());
 
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(0.89, 0.81, 0.34);
 
  // Add the actors to the renderer, set the background and size
  renderer->AddActor(actor);
  renderer->SetBackground(.3, .4, .5);
 
  renderer->ResetCamera();
  renderer->GetActiveCamera()->Azimuth(60);
  renderer->GetActiveCamera()->Elevation(60);
  renderer->GetActiveCamera()->Dolly(1.2);
  renderer->ResetCameraClippingRange();
 
  renderWindow->Render();
  interactor->Start();
 
  return EXIT_SUCCESS;
}