2

我使用 VTK 作为 qvtkwidget 在 QT 中显示 3D 对象。我知道我可以通过修改自己的交互风格来改变它的交互风格。我想分别通过右键单击和左键单击来旋转和移动对象。并尝试在头文件中制作修改后的交互风格类，但在修改后的交互风格中使用其他类中声明的函数存在一些困难。这应该很简单。有人知道吗？

  boxWidget.at(boxWidget.count()-1)->SetInput(reader->GetOutput());
        boxWidget.at(boxWidget.count()-1)->SetScalingEnabled(0); //turn this on to be able to resize the model
        boxWidget.at(boxWidget.count()-1)->SetRotationEnabled(0);
        boxWidget.at(boxWidget.count()-1)->SetInteractor(this->ui->qvtkWidget->GetInteractor());
        boxWidget.at(boxWidget.count()-1)->GetInteractor()->SetInteractorStyle(MyStyle::New());  /

BoxWidget 是我要应用的对象 'MyStyle' 以下是 MyStyle 类

class MyStyle : public vtkInteractorStyleTrackballCamera , public MainWindow
{
private:
unsigned int NumberOfClicks;
int PreviousPosition[2];
int ResetPixelDistance;
public:
static MyStyle *New();

vtkTypeMacro(MyStyle, vtkInteractorStyleTrackballCamera);

PeterStyle() : NumberOfClicks(0) , ResetPixelDistance(5)
{
    this->PreviousPosition[0] = 0;
    this->PreviousPosition[1] = 0;
}

virtual void OnLeftButtonDown()
{
    qDebug() << "My Style Mouse Left Clicked";
    //std::cout << "Pressed left mouse button." << std::endl;
    this->NumberOfClicks++;
    //std::cout << "NumberOfClicks = " << this->NumberOfClicks << std::endl;
    int pickPosition[2];
    this->GetInteractor()->GetEventPosition(pickPosition);

    int xdist = pickPosition[0] - this->PreviousPosition[0];
    int ydist = pickPosition[1] - this->PreviousPosition[1];

    this->PreviousPosition[0] = pickPosition[0];
    this->PreviousPosition[1] = pickPosition[1];

    int moveDistance = (int)sqrt((double)(xdist*xdist + ydist*ydist));

    // Reset numClicks - If mouse moved further than resetPixelDistance
    if(moveDistance > this->ResetPixelDistance)
    {
        this->NumberOfClicks = 1;
    }


    if(this->NumberOfClicks == 2)
    {
        vtkSmartPointer<vtkCamera> camera =
            vtkSmartPointer<vtkCamera>::New();
        camera->SetPosition(140.0, 155.0, 590.0);
        camera->SetFocalPoint(140.0, 155.0, 0.0);
        camera->SetClippingRange(590.0, 600.0);

        this->GetCurrentRenderer()->SetActiveCamera(camera);
        qDebug() << "Double clicked.";
        this->NumberOfClicks = 0;
    }
    // forward events
    vtkInteractorStyleTrackballCamera::OnLeftButtonDown();
}

我不知道用左键单击要更改什么来移动对象。

4

1 回答 1

0

如果您只想使用左键移动对象，则不需要子类化您自己的交互样式，vtk已经实现vtkInteractorStyleTrackballActor了允许通过鼠标控制演员的样式，而无需与相机交互。然后你可以覆盖它来做你想做的任何事情。

于 2016-06-29T13:56:37.633 回答