VTK 实例53：网格平滑

 1 #include "vtkAutoInit.h" 
 2 VTK_MODULE_INIT(vtkRenderingOpenGL2);
 3 VTK_MODULE_INIT(vtkInteractionStyle);
 4 
 5 #include <vtkSmartPointer.h>
 6 #include <vtkPolyDataReader.h>
 7 #include <vtkPolyData.h>
 8 #include <vtkSmoothPolyDataFilter.h>
 9 #include <vtkWindowedSincPolyDataFilter.h>
10 #include <vtkSphereSource.h>
11 #include <vtkPolyDataMapper.h>
12 #include <vtkActor.h>
13 #include <vtkRenderWindow.h>
14 #include <vtkRenderer.h>
15 #include <vtkRenderWindowInteractor.h>
16 
17 //测试文件：../data/fran_cut.vtk
18 int main(int argc, char *argv[])
19 {
20     vtkSmartPointer<vtkPolyDataReader> reader = 
21         vtkSmartPointer<vtkPolyDataReader>::New();
22     reader->SetFileName("C:\\Users\\Administrator\\Desktop\\VTK2\\hellovtk\\vtk_图像处理学习\\第六章_图像处理\\data\\fran_cut.vtk");
23     reader->Update();
24 
25     vtkSmartPointer<vtkSmoothPolyDataFilter> smoothFilter =
26         vtkSmartPointer<vtkSmoothPolyDataFilter>::New();
27     smoothFilter->SetInputConnection(reader->GetOutputPort());
28     smoothFilter->SetNumberOfIterations(200);
29     smoothFilter->Update();
30 
31     vtkSmartPointer<vtkPolyDataMapper> inputMapper =
32         vtkSmartPointer<vtkPolyDataMapper>::New();
33     inputMapper->SetInputConnection(reader->GetOutputPort());
34     vtkSmartPointer<vtkActor> inputActor =
35         vtkSmartPointer<vtkActor>::New();
36     inputActor->SetMapper(inputMapper);
37 
38     vtkSmartPointer<vtkPolyDataMapper> smoothedMapper =
39         vtkSmartPointer<vtkPolyDataMapper>::New();
40     smoothedMapper->SetInputConnection(smoothFilter->GetOutputPort());
41 
42     vtkSmartPointer<vtkActor> smoothedActor =
43         vtkSmartPointer<vtkActor>::New();
44     smoothedActor->SetMapper(smoothedMapper);
45 
46     double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
47     double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};
48 
49     vtkSmartPointer<vtkRenderer> leftRenderer =
50         vtkSmartPointer<vtkRenderer>::New();
51 
52     leftRenderer->SetViewport(leftViewport);
53     leftRenderer->AddActor(inputActor);
54     leftRenderer->SetBackground(0.8, 0.8, 0.8);
55     leftRenderer->ResetCamera();
56 
57     vtkSmartPointer<vtkRenderer> rightRenderer =
58         vtkSmartPointer<vtkRenderer>::New();
59     rightRenderer->SetViewport(rightViewport);
60     rightRenderer->AddActor(smoothedActor);
61     rightRenderer->SetBackground(0.8, 0.8, 0.8);
62     rightRenderer->SetActiveCamera(leftRenderer->GetActiveCamera());
63     rightRenderer->ResetCamera();
64 
65     vtkSmartPointer<vtkRenderWindow> renderWindow =
66         vtkSmartPointer<vtkRenderWindow>::New();
67     renderWindow->AddRenderer(leftRenderer);
68     renderWindow->AddRenderer(rightRenderer);
69     renderWindow->SetSize(640, 320);
70     renderWindow->Render();
71     renderWindow->SetWindowName("PolyDataLapLasianSmooth");
72 
73     vtkSmartPointer<vtkRenderWindowInteractor> interactor =
74         vtkSmartPointer<vtkRenderWindowInteractor>::New();
75     interactor->SetRenderWindow(renderWindow);
76 
77     renderWindow->Render();
78     interactor->Start();
79 
80     return EXIT_SUCCESS;
81 }