1 #include <vtkAutoInit.h>
2 VTK_MODULE_INIT(vtkRenderingOpenGL2);
3 VTK_MODULE_INIT(vtkRenderingVolumeOpenGL2);
4 VTK_MODULE_INIT(vtkRenderingFreeType);
5 VTK_MODULE_INIT(vtkInteractionStyle);
6
7 #include <vtkSmartPointer.h>
8 #include <vtkStructuredPoints.h>
9 #include <vtkStructuredPointsReader.h>
10 #include <vtkGPUVolumeRayCastMapper.h>
11 #include <vtkColorTransferFunction.h>
12 #include <vtkPiecewiseFunction.h>
13 #include <vtkRenderer.h>
14 #include <vtkRenderWindow.h>
15 #include <vtkRenderWindowInteractor.h>
16 #include <vtkVolumeProperty.h>
17 //#include <vtkVolumeRayCastIsosurfaceFunction.h>
18
19 int main(int argc, char* argv[])
20 {
21 vtkSmartPointer<vtkStructuredPointsReader> reader =
22 vtkSmartPointer<vtkStructuredPointsReader>::New();
23 reader->SetFileName("C:\\Users\\Administrator\\Desktop\\VTK2\\hellovtk\\vtk_图像处理学习\\第七章_VTK体绘制\\data\\mummy.128.vtk");
24 reader->Update();
25
26
27 vtkSmartPointer<vtkGPUVolumeRayCastMapper> volumeMapper =
28 vtkSmartPointer<vtkGPUVolumeRayCastMapper>::New();
29 volumeMapper->SetInputData(reader->GetOutput());;
30 volumeMapper->SetSampleDistance(volumeMapper->GetSampleDistance() / 2); //设置光线采样距离
31 //volumeMapper->SetAutoAdjustSampleDistances(0);//设置图像采样步长
32 //volumeMapper->SetImageSampleDistance(4);
33 /*************************************************************************/
34 vtkSmartPointer<vtkVolumeProperty> volumeProperty =
35 vtkSmartPointer<vtkVolumeProperty>::New();
36 volumeProperty->SetInterpolationTypeToLinear();
37 volumeProperty->ShadeOn(); //打开或者关闭阴影测试
38 volumeProperty->SetAmbient(0.4);
39 volumeProperty->SetDiffuse(0.6); //漫反射
40 volumeProperty->SetSpecular(0.2); //镜面反射
41 //设置不透明度
42 vtkSmartPointer<vtkPiecewiseFunction> compositeOpacity =
43 vtkSmartPointer<vtkPiecewiseFunction>::New();
44 compositeOpacity->AddPoint(70, 0.00);
45 compositeOpacity->AddPoint(90, 0.40);
46 compositeOpacity->AddPoint(180, 0.60);
47 volumeProperty->SetScalarOpacity(compositeOpacity); //设置不透明度传输函数
48 //设置梯度不透明属性
49 vtkSmartPointer<vtkPiecewiseFunction> volumeGradientOpacity =
50 vtkSmartPointer<vtkPiecewiseFunction>::New();
51 volumeGradientOpacity->AddPoint(10, 0.0);
52 volumeGradientOpacity->AddPoint(90, 0.5);
53 volumeGradientOpacity->AddPoint(100, 1.0);
54 volumeProperty->SetGradientOpacity(volumeGradientOpacity);//设置梯度不透明度效果对比
55 //设置颜色属性
56 vtkSmartPointer<vtkColorTransferFunction> color =
57 vtkSmartPointer<vtkColorTransferFunction>::New();
58 color->AddRGBPoint(0.000, 0.00, 0.00, 0.00);
59 color->AddRGBPoint(64.00, 1.00, 0.52, 0.30);
60 color->AddRGBPoint(190.0, 1.00, 1.00, 1.00);
61 color->AddRGBPoint(220.0, 0.20, 0.20, 0.20);
62 volumeProperty->SetColor(color);
63 /********************************************************************************/
64 vtkSmartPointer<vtkVolume> volume =
65 vtkSmartPointer<vtkVolume>::New();
66 volume->SetMapper(volumeMapper);
67 volume->SetProperty(volumeProperty);
68
69 vtkSmartPointer<vtkRenderer> ren = vtkSmartPointer<vtkRenderer>::New();
70 ren->SetBackground(0, 1, 0);
71 ren->AddVolume(volume);
72
73 vtkSmartPointer<vtkRenderWindow> rw = vtkSmartPointer<vtkRenderWindow>::New();
74 rw->AddRenderer(ren);
75 rw->SetSize(640, 480);
76 rw->Render();
77 rw->SetWindowName("VolumeRendering");
78
79 vtkSmartPointer<vtkRenderWindowInteractor> rwi =
80 vtkSmartPointer<vtkRenderWindowInteractor>::New();
81 rwi->SetRenderWindow(rw);
82
83 ren->ResetCamera();
84 rw->Render();
85 rwi->Start();
86
87 return 0;
88 }
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