VTK：一架飛機和一架Polydata之間的相交處

Question

是否有一種簡單的方法來計算一架飛機和一架polydata物體是否相交？

我想知道在哪邊我的polydata對象protude我的邊界框。

我想爲此任務使用VTK。

Answer 1

我解決了這個問題，使用了一個vtkBoundingBox，它具有平面位置，第二個vtkBoundingBox得到了我的vtkPolyData的界限。

Answer 2

請問vtkIntersectionPolyDataFilter是否適合您？ http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/IntersectionPolyDataFilter

Answer 3

您可以使用vtkCutter，如下圖所示：

#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> 

int main(int, char *[]) 
{ 
    vtkSmartPointer<vtkCubeSource> cube = 
    vtkSmartPointer<vtkCubeSource>::New(); 
    cube->SetXLength(40); 
    cube->SetYLength(30); 
    cube->SetZLength(20); 
    vtkSmartPointer<vtkPolyDataMapper> cubeMapper = 
    vtkSmartPointer<vtkPolyDataMapper>::New(); 
    cubeMapper->SetInputConnection(cube->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(10,0,0); 
    plane->SetNormal(1,0,0); 

    // Create cutter 
    vtkSmartPointer<vtkCutter> cutter = 
    vtkSmartPointer<vtkCutter>::New(); 
    cutter->SetCutFunction(plane); 
    cutter->SetInputConnection(cube->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(cubeMapper); 

    // 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; 
}