***的概要：为什么每个案例的选择都是这样的？一个漂亮的防弹方法来编码它，所以我假设你对实现的逻辑混淆。您对此感到困惑，是否正确？

Wikipedia outlines a pretty bulletproof approach to coding it, so I'll assume you're confused about the implementation's logic. You're confused about this, correct?

如果你看看它旁边的图片，你会明白为什么：

If you look at the image adjacent to it, you will see why:

img src =https://i.stack.imgur.com/SeiSb.pngalt =enter image description here>

每个频道的功能是分段的功能由五个线性段组成。案例考虑了每个分布的每个范围，即上图的阴影区域。

Each channel's function is a piecewise function consisting of five linear segments. The cases account for each range of each distribution, namely the shaded regions of the above picture.