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第二只小板凳(特别声明,这个例子其实是根据vtk下的例子改编的,所以大家就不要给我扔鸡蛋了...)

首先还是先加入相应的头文件
啪,啪,一个臭鸡蛋扔了过来,"快讲实例代码吧,这个我们都掌握了!",
算你狠...,姑且相信你会了

这里加入相互作用的回调类,这个类将会在oberser中由程序自动加载调用#include "vtkCommand.h" class vtkMyCallback: public vtkCommand { public: //vtk所有的创建实例是通过New()来实现的,我们也要继承这种风格 static vtkMyCallback *New() { return new vtkMyCallback; } virtual void Execute(vtkObject* pCaller, unsigned long, void*) { vtkRenderer *renderer = reinterpret_cast<vtkRenderer*>(pCaller); cout << renderer->GetActiveCamera()->GetPosition()[0] << " " << renderer->GetActiveCamera()->GetPosition()[1] << " " << renderer->GetActiveCamera()->GetPosition()[2] << "/n"; } }; int observerCylinder() { //创建一个圆柱体 vtkCylinderSource *pCylinder = vtkCylinderSource::New(); //对圆柱体增添属性 pCylinder ->SetHeight(20.0); pCylinder ->SetRadius(5.0); pCylinder ->SetCenter(0.0,0.0,0.0); pCylinder ->SetResolution(20); //平滑度 //数据输送管道pipeline vtkPolyDataMapper *pMapper = vtkPolyDataMapper::New(); pMapper ->SetInput( pCylinder ->GetOutput() ); //创建角色(演员) vtkActor* pActor = vtkActor::New(); pActor ->SetMapper( pMapper ); pActor ->GetProperty() ->SetColor(1.000,0.228,0.3111); pActor ->RotateX(30.0); //建立绘制者 vtkRenderer *pRender = vtkRenderer::New(); // 告诉绘制者将要在绘制窗口中进行显示的演员 pRender ->AddActor(pActor); pRender ->SetBackground(0.1,0.2,0.4); pRender ->ResetCamera(); //建立绘制窗口 vtkRenderWindow *pRenderWin = vtkRenderWindow::New(); //将绘制者加入绘制窗口 pRenderWin ->AddRenderer(pRender); pRenderWin ->SetSize(400,400); //这就是这个小板凳所增加的新功能 vtkMyCallback *pMemo = vtkMyCallback::New(); pRender ->AddObserver(vtkCommand::StartEvent,pMemo); pMemo ->Delete(); for ( int i = 0; i < 360; ++i) { pRenderWin->Render(); //绕"Z"轴旋转一周 pRender->GetActiveCamera()->Azimuth( 1 ); } //注意:释放我们所创建的所有对象,VTK对象的所有实例是通过Delete()方法实现的 pCylinder ->Delete(); pMapper ->Delete(); pActor ->Delete(); pRender ->Delete(); pRenderWin ->Delete(); return 0; }

这样,第二只小板凳就做好了