本人将《The VTK User’s Guide 11th Edition 》中的TCL编写的例程进行了C++的转换，使用的平台是VS2015，VTK版本是8.0.1。之所以贴出来，以求方便大家使用C++来进行VTK的研究。
VTK/Examples/Rendering/Tcl/rainbow.tcl之转成C++
1 #include "vtkAutoInit.h" 2 #include "vtkRenderer.h" 3 #include "vtkRenderWindow.h" 4 #include "vtkRenderWindowInteractor.h" 5 #include "vtkSmartPointer.h" 6 #include "vtkMultiBlockPLOT3DReader.h" 7 #include "vtkMultiBlockDataSet.h" 8 #include "vtkStructuredGridGeometryFilter.h" 9 #include "vtkLookupTable.h" 10 #include "vtkPolyDataMapper.h" 11 #include "vtkActor.h" 12 #include "vtkStructuredGridOutlineFilter.h" 13 #include "vtkCamera.h" 14 15 int main() 16 { 17 VTK_MODULE_INIT(vtkRenderingOpenGL2); 18 VTK_MODULE_INIT(vtkRenderingFreeType); 19 VTK_MODULE_INIT(vtkInteractionStyle); 20 21 //# First create pipeline a simple pipeline that reads a structure grid 22 //# and then extracts a plane from the grid.The plane will be colored 23 //# differently by using different lookup tables. 24 //# Note: the Update method is manually invoked because it causes the 25 //# reader to read; later on we use the output of the reader to set 26 //# a range for the scalar values. 27 vtkSmartPointer<vtkMultiBlockPLOT3DReader> pl3d = vtkSmartPointer<vtkMultiBlockPLOT3DReader>::New(); 28 pl3d->SetXYZFileName("D://VTK/VTK-8.0.1/.ExternalData/MD5/13338e5fa5a798f5d709b5ef6a9be1a0"); 29 pl3d->SetQFileName("D://VTK/VTK-8.0.1/.ExternalData/MD5/ff18fe9c1c68ce2842e0f4875464107d"); 30 pl3d->SetScalarFunctionNumber(100); 31 pl3d->SetVectorFunctionNumber(202); 32 pl3d->Update(); 33 34 vtkSmartPointer<vtkStructuredGridGeometryFilter> plane = vtkSmartPointer<vtkStructuredGridGeometryFilter>::New(); 35 plane->SetInputData(pl3d->GetOutput()->GetBlock(0)); 36 plane->SetExtent(1, 100, 1, 100, 7, 7); 37 vtkSmartPointer<vtkLookupTable> lut = vtkSmartPointer<vtkLookupTable>::New(); 38 vtkSmartPointer<vtkPolyDataMapper> planeMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); 39 planeMapper->SetLookupTable(lut); 40 planeMapper->SetInputConnection(plane->GetOutputPort()); 41 planeMapper->SetScalarRange(plane->GetOutput()->GetScalarRange()); 42 vtkSmartPointer<vtkActor> planeActor = vtkSmartPointer<vtkActor>::New(); 43 planeActor->SetMapper(planeMapper); 44 45 //# This creates a weird effect. The Build() method causes the lookup table 46 //# to allocate memory and create a table based on the currect hue, saturation, 47 //# value, and alpha(transparency) range.Here we then manually overwrite the 48 //# values generated by the Build() method. 49 lut->SetNumberOfColors(256); 50 lut->Build(); 51 for (int i=0;i<16;i++) 52 { 53 lut->SetTableValue(i * 16, 1.0, 0, 0, 1.0);//red 54 lut->SetTableValue(i * 16 + 1, 0, 1.0, 1, 1.0);//green 55 lut->SetTableValue(i * 16 + 2, 0, 0, 1.0, 1.0);//blue 56 lut->SetTableValue(i * 16 + 3, 0, 0, 0, 1.0);//black 57 } 58 59 //# This creates an outline around the data. 60 vtkSmartPointer<vtkStructuredGridOutlineFilter> outline = vtkSmartPointer<vtkStructuredGridOutlineFilter>::New(); 61 outline->SetInputData(pl3d->GetOutput()->GetBlock(0)); 62 vtkSmartPointer<vtkPolyDataMapper> outlineMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); 63 outlineMapper->SetInputConnection(outline->GetOutputPort()); 64 vtkSmartPointer<vtkActor> outlineActor = vtkSmartPointer<vtkActor>::New(); 65 outlineActor->SetMapper(outlineMapper); 66 67 68 69 //Create the Renderer, RenderWindow, RenderWindowInteractor 70 vtkSmartPointer<vtkRenderer> ren1 = vtkSmartPointer<vtkRenderer>::New(); 71 vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New(); 72 renWin->AddRenderer(ren1); 73 vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New(); 74 iren->SetRenderWindow(renWin); 75 76 //Add the actors to the renderer, set the background and size 77 ren1->AddActor(outlineActor); 78 ren1->AddActor(planeActor); 79 ren1->SetBackground(0.1, 0.2, 0.4); 80 ren1->TwoSidedLightingOff(); 81 renWin->SetSize(250, 250); 82 iren->Initialize(); 83 ren1->GetActiveCamera()->SetClippingRange(3.95297, 50); 84 ren1->GetActiveCamera()->SetFocalPoint(8.88908, 0.595038, 29.3342); 85 ren1->GetActiveCamera()->SetPosition(-12.3332, 31.7479, 41.2387); 86 ren1->GetActiveCamera()->SetViewUp(0.060772, -0.319905, 0.945498); 87 88 iren->Start(); 89 90 return 0; 91 }