QVTKWidget中的renderWindowInteractor

Question

我是VTK的新用户，我需要在QTCreator的QVTKWidget中放一个renderWindowInteractor。我有这个：

vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);

vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();

renderWindowInteractor->SetRenderWindow(renderWindow);

renderer->AddActor(actor);
renderWindow->Render();
renderWindowInteractor->Initialize();

但是我怎么才能把RenderWindowInteractor放在QVTKWidget里呢？我试过了，但不起作用。

this->qvtkWidget->GetRenderWindow()->AddRenderer(renderer);

对不起，我的英语，我来自哥伦比亚。

Answer 1

QVTKWidget有一个SetRenderWindow方法，允许你在QVTK引擎中设置你的渲染窗口。如果您为您的RenderWindowInteractor设置了相同的renderWindow，它应该可以工作。

以下是我在自定义InteractionStyle中使用的代码示例

QVTKWidget *engine = new QVTKWidget ();

// Setup window
vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();

// Setup renderer
vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(renderer);

engine->SetRenderWindow(renderWindow); // make the link between VTK and QT

// create stuff for user interaction
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
/*
  vtkSmartPointer<vtkUserInteractionStyle> inter = vtkUserInteractionStyle::New ();
   inter->SetDefaultRenderer(renderer);
   renderWindowInteractor->SetInteractorStyle( inter );
*/

// make the link between the  renderwindow and the interactor
renderWindowInteractor->SetRenderWindow ( renderWindow );    

engine->show();
renderWindow->Render ();
renderWindowInteractor->Initialize();

Answer 2

找出不需要使用的，绑定widget可以先解决这个问题，代码测试它可以工作。

/////////////////////////////////////////////////////
//CODE    author:Bing_Lee 2018-9-13
/////////////////////////////////////////////////////
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<QVTKWidget> widget = vtkSmartPointer<QVTKWidget>::NEW();
widget->SetRenderWindow(renderWindow);

/*//comment
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();

renderWindowInteractor->SetRenderWindow(renderWindow);
*/

renderer->AddActor(actor);

/*//comment
renderWindow->Render();
renderWindowInteractor->Initialize();
*/