VTK Users Guide 中C++例程之ImplicitPlaneWidget

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/GUI/Tcl/ImplicitPlaneWidget.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 "vtkSphereSource.h"
  7 #include "vtkConeSource.h"
  8 #include "vtkGlyph3D.h"
  9 #include "vtkAppendPolyData.h"
 10 #include "vtkPolyDataMapper.h"
 11 #include "vtkLODActor.h"
 12 #include "vtkPlane.h"
 13 #include "vtkClipPolyData.h"
 14 #include "vtkProperty.h"
 15 #include "vtkImplicitPlaneWidget.h"
 16 #include "vtkCommand.h"
 17 #include "vtkCallbackCommand.h"
 18 
 19 static vtkSmartPointer<vtkImplicitPlaneWidget> planeWidget;
 20 static vtkSmartPointer<vtkLODActor> selectActor;
 21 static vtkSmartPointer<vtkPlane> plane;
 22 
 23 void myCallbackFunction(vtkObject* caller, long unsigned int eventId, void* clientData, void* callData)
 24 {
 25     planeWidget->GetPlane(plane);
 26     selectActor->VisibilityOn();
 27 }
 28 
 29 int main()
 30 {
 31     VTK_MODULE_INIT(vtkRenderingOpenGL2);
 32     VTK_MODULE_INIT(vtkRenderingFreeType);
 33     VTK_MODULE_INIT(vtkInteractionStyle);
 34 
 35     //# This example demonstrates how to use the vtkPlaneWidget to probe
 36     //# a dataset and then generate contours on the probed data.
 37 
 38     //# Create a mace out of filters.
 39     vtkSmartPointer<vtkSphereSource> sphere = vtkSmartPointer<vtkSphereSource>::New();
 40     vtkSmartPointer<vtkConeSource> cone = vtkSmartPointer<vtkConeSource>::New();
 41     vtkSmartPointer<vtkGlyph3D> glyph = vtkSmartPointer<vtkGlyph3D>::New();
 42     glyph->SetInputConnection(sphere->GetOutputPort());
 43     glyph->SetSourceConnection(cone->GetOutputPort());
 44     glyph->SetVectorModeToUseNormal();
 45     glyph->SetScaleModeToScaleByVector();
 46     glyph->SetScaleFactor(0.25);
 47 
 48     //# The sphere and spikes are appended into a single polydata.
 49     //# This just makes things simpler to manage.
 50     vtkSmartPointer<vtkAppendPolyData> apd = vtkSmartPointer<vtkAppendPolyData>::New();
 51     apd->AddInputConnection(glyph->GetOutputPort());
 52     apd->AddInputConnection(sphere->GetOutputPort());
 53     vtkSmartPointer<vtkPolyDataMapper> maceMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 54     maceMapper->SetInputConnection(apd->GetOutputPort());
 55     vtkSmartPointer<vtkLODActor> maceActor = vtkSmartPointer<vtkLODActor>::New();
 56     maceActor->SetMapper(maceMapper);
 57     maceActor->VisibilityOn();
 58 
 59     //# This portion of the code clips the mace with the vtkPlanes
 60     //# implicit function.The clipped region is colored green.
 61     plane = vtkSmartPointer<vtkPlane>::New();
 62     vtkSmartPointer<vtkClipPolyData> clipper = vtkSmartPointer<vtkClipPolyData>::New();
 63     clipper->SetInputConnection(apd->GetOutputPort());
 64     clipper->SetClipFunction(plane);
 65     clipper->InsideOutOn();
 66     vtkSmartPointer<vtkPolyDataMapper> selectMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 67     selectMapper->SetInputConnection(clipper->GetOutputPort());
 68     selectActor = vtkSmartPointer<vtkLODActor>::New();
 69     selectActor->SetMapper(selectMapper);
 70     selectActor->GetProperty()->SetColor(0, 1, 0);
 71     selectActor->VisibilityOff();
 72     selectActor->SetScale(1.01, 1.01, 1.01);
 73 
 74     //Create the Renderer, RenderWindow, RenderWindowInteractor
 75     vtkSmartPointer<vtkRenderer> ren1 = vtkSmartPointer<vtkRenderer>::New();
 76     vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
 77     renWin->AddRenderer(ren1);
 78     vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
 79     iren->SetRenderWindow(renWin);
 80 
 81     //# Associate the line widget with the interactor
 82     planeWidget = vtkSmartPointer<vtkImplicitPlaneWidget>::New();
 83     planeWidget->SetInteractor(iren);
 84     planeWidget->SetPlaceFactor(1.25);
 85     planeWidget->SetInputConnection(glyph->GetOutputPort());
 86     planeWidget->PlaceWidget();
 87     vtkSmartPointer<vtkCallbackCommand> myCallback = vtkSmartPointer<vtkCallbackCommand>::New();
 88     myCallback->SetCallback(myCallbackFunction);
 89     planeWidget->AddObserver(vtkCommand::InteractionEvent,myCallback);
 90 
 91     ren1->AddActor(maceActor);
 92     ren1->AddActor(selectActor);
 93 
 94     //Add the actors to the renderer; set the background and size; zoom in;
 95     //and render.
 96     ren1->SetBackground(1, 1, 1);
 97     renWin->SetSize(300, 300);
 98     ren1->SetBackground(0.1, 0.2, 0.4);
 99 
100     //ren1->ResetCamera();
101 
102     renWin->Render();
103     iren->Start();
104 
105     return 0;
106 }
posted on 2017-11-28 17:17 湘水亭长阅读(1197) 评论(0) 编辑收藏举报