三维空间中的挑选交互----vtkInteractorStyle

这里发一个demo，关于如何在三维空间中挑选不同actor并交互~
注明下，这demo非原创，来自vtk wiki中的例子。

// Handle mouse events
class MouseInteractorStyle5 : public vtkInteractorStyleTrackballActor
{
public:
static MouseInteractorStyle5* New();
vtkTypeMacro(MouseInteractorStyle5, vtkInteractorStyleTrackballActor);
virtual void OnLeftButtonDown()
{
// Forward events
vtkInteractorStyleTrackballActor::OnLeftButtonDown();
if(this->InteractionProp == this->Cube)
{
std::cout << "Picked cube." << std::endl;
}
else if(this->InteractionProp == this->Sphere)
{
std::cout << "Picked sphere." << std::endl;
}
}
vtkActor* Cube;
vtkActor* Sphere;
};

接下来设置交互器
// An interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
// Set the custom stype to use for interaction.
vtkSmartPointer<MouseInteractorStyle5> style =
vtkSmartPointer<MouseInteractorStyle5>::New();
style->SetDefaultRenderer(renderer);
style->Cube = cubeActor;//这里是你的actorA
style->Sphere = sphereActor;//这里是你的actorB
renderWindowInteractor->SetInteractorStyle(style);

@gaozhenyu90123