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要算一组值，已知起点坐标为(0，0).终点坐标为(127，1738695440),中间有无数组值，按正切函数（貌似是这么叫吧）。球这个公式如何处理，我可以实现输入X或Y值得到对应的Y或X值。
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orzfly Oct 5, 2013  1
y = tan(arctan(1738695440) / 127 * x)
http://www.wolframalpha.com/input/?i=y+%3D+tan%28arctan%281738695440%29+%2F+127+*+x%29&dataset=&equal=Submit |
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