Only call openGL coloring function, with the C++ achieve drawing a line function, draw a polygon, circle

Readme.txt
lab1\Debug\lab1.exe
....\.....\lab1.ilk
....\.....\lab1.pdb
....\ipch\lab1-ca1e91d7\lab1-61d90eac.ipch
....\lab1\Debug\CL.read.1.tlog
....\....\.....\CL.write.1.tlog
....\....\.....\lab1.lastbuildstate
....\....\.....\lab1.log
....\....\.....\lab1.obj
....\....\.....\lab1.pch
....\....\.....\link-cvtres.read.1.tlog
....\....\.....\link-cvtres.write.1.tlog
....\....\.....\link-rc.read.1.tlog
....\....\.....\link-rc.write.1.tlog
....\....\.....\link.19044-cvtres.read.1.tlog
....\....\.....\link.19044-cvtres.write.1.tlog
....\....\.....\link.19044-rc.read.1.tlog
....\....\.....\link.19044-rc.write.1.tlog
....\....\.....\link.19044.read.1.tlog
....\....\.....\link.19044.write.1.tlog
....\....\.....\link.23944-cvtres.read.1.tlog
....\....\.....\link.23944-cvtres.write.1.tlog
....\....\.....\link.23944-rc.read.1.tlog
....\....\.....\link.23944-rc.write.1.tlog
....\....\.....\link.23944.read.1.tlog
....\....\.....\link.23944.write.1.tlog
....\....\.....\link.6456-cvtres.read.1.tlog
....\....\.....\link.6456-cvtres.write.1.tlog
....\....\.....\link.6456-rc.read.1.tlog
....\....\.....\link.6456-rc.write.1.tlog
....\....\.....\link.6456.read.1.tlog
....\....\.....\link.6456.write.1.tlog
....\....\.....\link.read.1.tlog
....\....\.....\link.write.1.tlog
....\....\.....\stdafx.obj
....\....\.....\vc110.idb
....\....\.....\vc110.pdb
....\....\glut.h
....\....\lab1.cpp
....\....\lab1.vcxproj
....\....\lab1.vcxproj.filters
....\....\ReadMe.txt
....\....\stdafx.cpp
....\....\stdafx.h
....\....\targetver.h
....\lab1.sdf
....\lab1.sln
....\lab1.v11.suo
lab1.exe
....\ipch\lab1-ca1e91d7
....\lab1\Debug
....\Debug
....\ipch
....\lab1
lab1

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