VTK 实例68：体绘制透明度调整

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 <vtkStructuredPointsReader.h> 9 #include <vtkStructuredPoints.h> 10 #include <vtkGPUVolumeRayCastMapper.h> 11 #include <vtkVolumeProperty.h> 12 #include <vtkPiecewiseFunction.h> 13 #include <vtkColorTransferFunction.h> 14 #include <vtkVolume.h> 15 #include <vtkRenderer.h> 16 #include <vtkRenderWindoh> 17 #include <vtkRenderWindowInteractor.h> 18 #include <vtkCamera.h> 19 20 int main() 21 ; 93 double View2[4] = ; 94 vtkSmartPointer<vtkRenderer> render1 = 95 vtkSmartPointer<vtkRenderer>::New(); 96 render1>AddVolume(volume1); 97 render1>SetViewport(View1); 98 render1>SetBackground(1, 1, 0); 99 100 vtkSmartPointer<vtkRenderer> render2 = 101 vtkSmartPointer<vtkRenderer>::New(); 102 render2>AddVolume(volume2); 103 render2>SetViewport(View2); 104 render2>SetBackground(0, 1, 0); 105 106 vtkSmartPointer<vtkRenderWindow> rw = 107 vtkSmartPointer<vtkRenderWindow>::New(); 108 rw>AddRenderer(render1); 109 rw>AddRenderer(render2); 110 rw>SetSize(640, 320); 111 rw>SetWindowName("Differ Gray Opacity Function"); 112 113 vtkSmartPointer<vtkRenderWindowInteractor> rwi = 114 vtkSmartPointer<vtkRenderWindowInteractor>::New(); 115 rwi>SetRenderWindow(rw); 116 117 render1>GetActiveCamera()>SetPosition(0, 1, 0); 118 render1>GetActiveCamera()>SetFocalPoint(0, 0, 0); 119 render1>GetActiveCamera()>SetViewUp(0, 0, 1); 120 render1>GetActiveCamera()>Azimuth(30); 121 render1>GetActiveCamera()>Elevation(30); 122 render1>ResetCamera(); 123 render2>SetActiveCamera(render1>GetActiveCamera()); 124 125 rw>Render(); 126 rwi>Start(); 127 return 0; 128 }

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