VTK 沿直线方向生成一个圆柱体

版权声明：小薛薛的博客 https://blog.csdn.net/qq_35007834/article/details/85248416

如果已经知道了圆柱长轴的两个端点，可以结合vtkLineSource 和 vtkTubeFilter来生成具有方向性的圆柱体

int main(int, char *[]){
    
    vtkSmartPointer<vtkLineSource> line = vtkSmartPointer<vtkLineSource>::New();
    line->SetPoint1(0, 0, 0);
    line->SetPoint2(10, 15, 20);
    
    vtkSmartPointer<vtkTubeFilter> tubeFilter = vtkSmartPointer<vtkTubeFilter>::New();
    tubeFilter->SetInputConnection(line->GetOutputPort());
    tubeFilter->SetRadius(3.0);
    tubeFilter->SetNumberOfSides(100);
    tubeFilter->CappingOn();

        vtkPolyDataMapper *vesselMapper = vtkPolyDataMapper::New();
        vesselMapper->SetInputConnection(tubeFilter->GetOutputPort());
        vesselMapper->SetScalarRange(0,7);
     
    
        vtkSmartPointer<vtkActor> actor =vtkSmartPointer<vtkActor>::New();
        actor->SetMapper(vesselMapper);
        actor->SetColor(0,0,0);
       // vtkSmartPointer<vtkNamedColors> colors =vtkSmartPointer<vtkNamedColors>::New();
    
        renderer =vtkSmartPointer<vtkRenderer>::New();
        renderer->SetBackground(1,1,1);//Slate_grey背景颜色
        renderer->AddActor(actor);
    
        vtkSmartPointer<vtkRenderWindow> renderWindow =vtkSmartPointer<vtkRenderWindow>::New();
        renderWindow->AddRenderer(renderer);
        renderWindow->SetSize(1000, 1000);
    
        vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =vtkSmartPointer<vtkRenderWindowInteractor>::New();
        renderWindowInteractor->SetRenderWindow(renderWindow);
    
        renderWindow->Render(); //刷新
        renderWindowInteractor->Initialize();
        renderWindowInteractor->Start();
}