在三维城市，或者三维古建筑模型的重建中，用于三维点云的多方位显示。-Cities in the three-dimensional, or three-dimensional reconstruction of ancient buildings in the model for three-dimensional point cloud of multi-directional display.

一个3D时钟显示系统源码，可以转动地球，选择城市，显示当地时钟。-A 3 d clock display system source code, can turn the earth, select cities, according to the local clock.