./NiViewer: error while loading shared libraries: libglut.so.3: cannot open shared object file

使用xbox360深度摄像头

参考：https://blog.csdn.net/ouyangandy/article/details/72319237?utm_source=blogxgwz7
第一次使用NiViewer时出现：
./NiViewer: error while loading shared libraries: libglut.so.3: cannot open shared object file: No such file or directory
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尝试以下几个方案：

1. sudo apt-get update
2. sudo apt-get upgrade
3. 修改镜像源
   /********************************************************************************************************/
   3.1 sudo apt-cache search glut |grep glut #搜索相关包
   3.2 sudo apt-get install freeglut3
   
   即可