Will txt opengl drawn through the mid-point set, the keyboard arrow keys to control the image rotation

画点\1.txt
....\data.txt
....\Debug\3d_point.txt
....\.....\3d_point2.txt
....\.....\lesson3.exe
....\.....\lesson3.ilk
....\.....\lesson3.obj
....\.....\lesson3.pch
....\.....\lesson3.pdb
....\.....\point.txt
....\.....\vc60.idb
....\.....\vc60.pdb
....\Lesson3.cpp
....\Lesson3.dsp
....\Lesson3.dsw
....\Lesson3.exe
....\Lesson3.ncb
....\Lesson3.opt
....\lesson3.plg
....\Lesson3.sln
....\Lesson3.suo
....\point.txt
....\point1.txt
....\point3.txt
....\Debug
画点

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