By Douglas Peucker algorithm C++ achieve, you can simplify the vector boundary lines, reduce data redundancy.

DouglasPeuker\1.txt
.............\2.txt
.............\DouglasPeuker.cpp
.............\DouglasPeuker.dsp
.............\DouglasPeuker.dsw
.............\DouglasPeuker.ncb
.............\DouglasPeuker.opt
.............\DouglasPeuker.plg
.............\jpl_vegetation_grass.txt
.............\jpl_vegetation_grass2.txt
.............\ReadMe.txt
.............\StdAfx.cpp
.............\StdAfx.h
.............\Debug\DouglasPeuker.exe
.............\.....\DouglasPeuker.ilk
.............\.....\DouglasPeuker.obj
.............\.....\DouglasPeuker.pch
.............\.....\DouglasPeuker.pdb
.............\.....\StdAfx.obj
.............\.....\vc60.idb
.............\.....\vc60.pdb
.............\Debug
DouglasPeuker

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