Rewrite a simple menu elastic size _ navigation menu

I can see a simple menu style. Because it was a relatively early work of the author, the visual effect was not very good and a little abrupt and I made some slight changes myself, imitating the icon animation effect (the key difference is that getStyle gets the current calculated style function) Here is a small description about the function for dynamically setting the font size, because I did not consider the 3D menu format, I simply used the cosine function.

To avoid two peaks in the overall menu height, cos (x/K) K In should be a function related to the number of menu entries and the maximum font value. Here I set it as a constant.

The complete code is

The Code is as follows:

Menu list