虚拟现实场景，模拟升降晾衣杆升降的过程

虚拟群体与动态视频场景的在线实时融合Virtual groups and dynamic real-time integration of the online video scene-Virtual groups and dynamic real-time integration of the online video scene

一个实用的摄像头类，实现虚拟漫游，上、下、左、右全方位场景漫游控制。-A practical camera class, virtual roaming, up, down, left and right full-scene roaming control.