莫比乌斯环-vtkTriangleStrip

 #ifndef INITIAL_OPENGL

 #define INITIAL_OPENGL

 #include <vtkAutoInit.h>

 VTK_MODULE_INIT(vtkRenderingOpenGL)

 VTK_MODULE_INIT(vtkInteractionStyle)

 VTK_MODULE_INIT(vtkRenderingFreeType)

 #endif

 #include <iostream>

 using namespace std;

 #include "vtkPolyDataMapper.h"

 #include "vtkWin32OpenGLRenderWindow.h"

 #include "vtkRenderWindow.h"

 #include "vtkRenderWindowInteractor.h"

 #include "vtkRenderer.h"

 #include "vtkPoints.h"

 #include "vtkWin32RenderWindowInteractor.h"

 #include "vtkProperty.h"

 #include "vtkFloatArray.h"

 #include "vtkPolyData.h"

 #include "vtkDataSetMapper.h"

 #include "vtkActor2D.h"

 #include "vtkPointData.h"

 #include "vtkPolyVertex.h"

 #include <vtkInteractorStyleTrackballCamera.h>

 #include <vtkCellArray.h>

 #include "vtkDelaunay2D.h"

 #include "vtkMath.h"

 #include <vtkTransformFilter.h>

 #include <vtkCamera.h>

 #include <vtkTriangleStrip.h>

 void myShow(vtkPolyData* anInput)

 {

     vtkSmartPointer<vtkPolyDataMapper> aMapper=vtkSmartPointer<vtkPolyDataMapper>::New();

     aMapper->SetInputData(anInput);

     aMapper->ScalarVisibilityOn();

     vtkSmartPointer<vtkActor> anActor=vtkSmartPointer<vtkActor>::New();

     anActor->SetMapper(aMapper);

     anActor->GetProperty()->SetRepresentationToSurface();

     anActor->GetProperty()->SetPointSize();

     anActor->GetProperty()->SetColor(,,);

     anActor->GetProperty()->SetOpacity(0.4);

     vtkSmartPointer<vtkRenderer> ren1=vtkSmartPointer<vtkRenderer>::New();

     vtkSmartPointer<vtkRenderWindow> renWin=vtkSmartPointer<vtkRenderWindow>::New();

     ren1->AddActor(anActor);

     ren1->SetBackground(0.5,0.5,0.5);

     ren1->SetBackground2(,,);

     renWin->AddRenderer(ren1);

     renWin->SetSize(,);

     vtkSmartPointer<vtkRenderWindowInteractor> iren=vtkSmartPointer<vtkRenderWindowInteractor>::New();

     vtkSmartPointer<vtkInteractorStyleTrackballCamera> style=vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();

     iren->SetRenderWindow(renWin);

     iren->SetInteractorStyle(style);

     ren1->ResetCamera();

     renWin->Render();

     iren->Start();

 }

 int main()

 {

     //创建几何点数据

     double vArr[]={-0.5,0.5};

     double theta=vtkMath::Pi()*;

     int thetaResolution=;

     double dTheta=theta/thetaResolution;

     double *uArr=new double[thetaResolution];

     vtkSmartPointer<vtkPoints> points=vtkSmartPointer<vtkPoints>::New();

     for(int i=;i<thetaResolution+;i++)

     {

         uArr[i]=i*dTheta;

         double u=uArr[i];

         for(int j=;j<;j++)

         {

             double v=vArr[j];

             double pt[]={(+v/*cos(u/))*cos(u),(+v/*cos(u/))*sin(u),v/*sin(u/)};

             points->InsertNextPoint(pt);

         }

     }

     //创建拓扑结构

     vtkSmartPointer<vtkTriangleStrip> mobiusStrip=vtkSmartPointer<vtkTriangleStrip>::New();

     mobiusStrip->GetPointIds()->SetNumberOfIds((thetaResolution+)*);

     for(int i=;i<(thetaResolution+)*;i++)

         mobiusStrip->GetPointIds()->SetId(i,i);

     //将拓扑结构组合进Cell

     vtkSmartPointer<vtkCellArray> mobiusCell=vtkSmartPointer<vtkCellArray>::New();

     mobiusCell->InsertNextCell(mobiusStrip);

     //将几何点与Cell结构组合成一个PolyData。

     vtkSmartPointer<vtkPolyData> mobiusPolydata=vtkSmartPointer<vtkPolyData>::New();

     mobiusPolydata->SetPoints(points);

     mobiusPolydata->SetStrips(mobiusCell);

     myShow(mobiusPolydata);

     return ;

 }