Question

我从此网站SpaceShuttle加载航天飞机运载火箭模型使用StreamLines示例，但我遇到了两个问题。首先，宇宙飞船的轮廓不会显示在qvtkwidget上。第二个我得到错误“vtkStreamLine（0x2c5a0c0）：没有定义矢量数据！”

我正在使用vtk版本5.8和QT 2.5.2

如果我将.vtk文件加载到qvtkWidget中，它可以正常工作。

我尝试了一切，仍然无法摆脱这一点。我会感激任何消化。

这是我的代码：

void MainWindow::DrawSpaceshuttle()
{

std::string xyzFile = "../grid.xyz"; 
std::string qFile = "../solution.q"; 

#if VTK_MAJOR_VERSION <= 5
vtkSmartPointer<vtkPLOT3DReader> pl3d =
  vtkSmartPointer<vtkPLOT3DReader>::New();
#else
vtkSmartPointer<vtkMultiBlockPLOT3DReader> pl3d =
  vtkSmartPointer<vtkMultiBlockPLOT3DReader>::New();
#endif
pl3d->SetXYZFileName(xyzFile.c_str());
pl3d->SetQFileName(qFile.c_str());
pl3d->SetScalarFunctionNumber(100);
pl3d->SetVectorFunctionNumber(202);
pl3d->Update();

// Source of the streamlines
vtkSmartPointer<vtkPlaneSource> seeds =
  vtkSmartPointer<vtkPlaneSource>::New();
seeds->SetXResolution(4);
seeds->SetYResolution(4);
seeds->SetOrigin(2,-2,26);
seeds->SetPoint1(2,2,26);
seeds->SetPoint2(2,-2,32);

// Streamline itself
vtkSmartPointer<vtkStreamLine> streamLine =
  vtkSmartPointer<vtkStreamLine>::New();
#if VTK_MAJOR_VERSION <= 5
streamLine->SetInputConnection(pl3d->GetOutputPort());
streamLine->SetSource(seeds->GetOutput());
#else
pl3d->Update();
streamLine->SetInputData(pl3d->GetOutput()->GetBlock(0));
streamLine->SetSourceConnection(seeds->GetOutputPort());
#endif
streamLine->SetMaximumPropagationTime(200);
streamLine->SetIntegrationStepLength(.2);
streamLine->SetStepLength(.001);
streamLine->SetNumberOfThreads(1);
streamLine->SetIntegrationDirectionToForward();
streamLine->VorticityOn();

vtkSmartPointer<vtkPolyDataMapper> streamLineMapper =
  vtkSmartPointer<vtkPolyDataMapper>::New();
streamLineMapper->SetInputConnection(streamLine->GetOutputPort());

vtkSmartPointer<vtkActor> streamLineActor =
  vtkSmartPointer<vtkActor>::New();
streamLineActor->SetMapper(streamLineMapper);
streamLineActor->VisibilityOn();

// Outline-Filter for the grid
vtkSmartPointer<vtkStructuredGridOutlineFilter> outline =
  vtkSmartPointer<vtkStructuredGridOutlineFilter>::New();
#if VTK_MAJOR_VERSION <= 5
outline->SetInputConnection(pl3d->GetOutputPort());
#else
outline->SetInputData(pl3d->GetOutput()->GetBlock(0));
#endif
vtkSmartPointer<vtkPolyDataMapper> outlineMapper =
  vtkSmartPointer<vtkPolyDataMapper>::New();
outlineMapper->SetInputConnection(outline->GetOutputPort());

vtkSmartPointer<vtkActor> outlineActor =
  vtkSmartPointer<vtkActor>::New();
outlineActor->SetMapper(outlineMapper);
outlineActor->GetProperty()->SetColor(1, 1, 1);

// Create the RenderWindow, Renderer and Actors
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<vtkInteractorStyleTrackballCamera> style =
  vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
interactor->SetInteractorStyle(style);

renderer->AddActor(streamLineActor);
renderer->AddActor(outlineActor);

// Add the actors to the renderer, set the background and size
renderer->SetBackground(0.1, 0.2, 0.4);
renderWindow->SetSize(300, 300);
interactor->Initialize();
renderWindow->Render();

interactor->Start();



}

void MainWindow::on_pushButton_4_clicked()
{

 DrawSpaceshuttle();

}

为什么vtkPLOT3DReader不会显示在qvtkWidget上？

0 个答案: