0.实现效果

显示箭头

    vtkOutputWindow::SetGlobalWarningDisplay(0);pcl::visualization::PCLVisualizer::Ptr viewer(new pcl::visualization::PCLVisualizer("3D Viewer"));viewer->setBackgroundColor(1, 1, 1);//添加箭头显示pcl::PointXYZ pA(0, 0, 0);pcl::PointXYZ pB(5, 5, 5);viewer->addArrow<pcl::PointXYZ>(pA, pB, 255, 0, 0, true, "arrow", 0);viewer->addCoordinateSystem(10);viewer->initCameraParameters();viewer->setCameraPosition(90, 90, 30, -0.5, -0.5, 0.7);while (!viewer->wasStopped()){viewer->spinOnce(1000);}

显示球体

vtkOutputWind