VTK初入门径--第二只小板凳

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pipelinevtkPolyDataMapper *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