vc6.0 WGS84坐标转北京54坐标（高斯投影）及根据两个gps点的趋势确定方向，根据距离，推算一条直线上第三个gps点

======================================================================== CONSOLE APPLICATION : CoordCovert ======================================================================== AppWizard has created this CoordCovert application for you. This file contains a summary of what you will find in each of the files that make up your CoordCovert application. CoordCovert.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. CoordCovert.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named CoordCovert.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////