基于多通道技术的星空模拟方法研究 在使用主通道绘制地球近景区域的的基础条件上添加了一个新的通道，并在新的通道的回调函数中绘制星空背景-Star multi-channel technology is based simulation method to draw the Earth at close-range use of the main channel of the basic conditions for the region to add a new channel and new