VTK工具包-vtkCutter性能

我使用VTK Toolkit加载OBJ文件和vtkCutter，通过播放剪切数据集，然后绘制剪切的轮廓。正如另一位用户在VTK用户论坛上指出的那样，对于大型对象，这可能会变得相当缓慢。

有没有一种方法可以让刀具使用分层数据结构来获得更好的性能？

这是代码：

#include <vtkSmartPointer.h>
#include <vtkCubeSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkPlane.h>
#include <vtkCutter.h>
#include <vtkProperty.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkOBJReader.h>
int main(int argc, char *argv[])
{
    // Parse command line arguments
    if (argc != 2) {
        std::cout << "Usage: " << argv[0] << " Filename(.obj)" << std::endl;
        return EXIT_FAILURE;
    }
    std::string filename = argv[1];
    vtkSmartPointer<vtkOBJReader> obj = vtkSmartPointer<vtkOBJReader>::New();
    obj->SetFileName(filename.c_str());
    obj->Update();
    vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    mapper->SetInputConnection(obj->GetOutputPort());
    // Create a plane to cut,here it cuts in the XZ direction (xz normal=(1,0,0);XY =(0,0,1),YZ =(0,1,0)
    vtkSmartPointer<vtkPlane> plane = vtkSmartPointer<vtkPlane>::New();
    plane->SetOrigin(0, 0, 0);
    plane->SetNormal(1, 0, 0);
    // Create cutter
    vtkSmartPointer<vtkCutter> cutter = vtkSmartPointer<vtkCutter>::New();
    cutter->SetCutFunction(plane);
    cutter->SetInputConnection(obj->GetOutputPort());
    cutter->Update();
    vtkSmartPointer<vtkPolyDataMapper> cutterMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    cutterMapper->SetInputConnection(cutter->GetOutputPort());
    // Create plane actor
    vtkSmartPointer<vtkActor> planeActor = vtkSmartPointer<vtkActor>::New();
    planeActor->GetProperty()->SetColor(1.0, 1, 0);
    planeActor->GetProperty()->SetLineWidth(2);
    planeActor->SetMapper(cutterMapper);
    // Create cube actor
    vtkSmartPointer<vtkActor> cubeActor = vtkSmartPointer<vtkActor>::New();
    cubeActor->GetProperty()->SetColor(0.5, 1, 0.5);
    cubeActor->GetProperty()->SetOpacity(0.5);
    cubeActor->SetMapper(mapper);
    // Create renderers and add actors of plane and cube
    vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
    renderer->AddActor(planeActor); //display the rectangle resulting from the cut
    renderer->AddActor(cubeActor); //display the cube
    // Add renderer to renderwindow and render
    vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetSize(600, 600);
    vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<
            vtkRenderWindowInteractor>::New();
    interactor->SetRenderWindow(renderWindow);
    renderer->SetBackground(0, 0, 0);
    renderWindow->Render();
    interactor->Start();
    return EXIT_SUCCESS;
}