本帖最后由 kong12 于 2009-9-9 22:06 编辑 , G0 N% r/ E8 N; H
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太平洋战争二维坐标系详解 0 }0 ]+ p( T U& y# U! @
! ~" y# _5 n- j, I* m例如:
: |8 Y8 n R* N& w% }坐标55,67 & H& Z. e# w) P9 s! H8 k9 h
我们用x,y,分别代表这两个坐标。 x=55 y=67" k5 c6 Y% J6 u: S3 p+ R- f) C- m
那么,x就是指向正右的,y是指向正下。大地图最左上角是零点。
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值得注意的是,我们这里的坐标不是象大家所想的那样,它不同于常用的平面直角坐标系。 6 p2 W, ~0 I! L9 ] B1 Q' W
如图所示:
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- k& L( ^: U- \7 D: U) [& n& v t/ t````````───────┼──────→右(x轴) 6 o& ^6 P+ f$ O W' @# n1 A7 O' {
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6 @$ w2 I, c+ q/ v: {9 d 下(y轴)# `- ^! N! [' `# H4 u
````````````````太平洋战争二维坐标系 |