噪声的伪随机数发生器 [英] Pseudorandom number generator for noise

问题描述

我正在尝试制作 http://freespace.virgin.net/hugo.elias/models/m_perlin.htm 使用 Lua.但是，它不能正常工作，因为 Lua 不支持按位运算符，这是该页面上的伪随机数函数所必需的.我试着用 randomseed() 搞乱，但我能想出的一切都只是制作了非常奇怪的模式.我需要一个伪随机数生成器，当给定参数 x、y 和随机种子时，它将生成 -1 和 1 之间的数字.伪代码没问题.

I'm trying to make the Perlin noise algorithm described at http://freespace.virgin.net/hugo.elias/models/m_perlin.htm using Lua. However, it doesn't work properly since Lua doesn't support bitwise operators, which are necessary for the pseudorandom number function on that page. I tried messing around with randomseed() but everything I could come up with just made really bizarre patterns. I need a pseudorandom number generator that will generate numbers between -1 and 1 when given the parameters x, y, and a random seed. Pseudocode is fine.

谢谢！

推荐答案

已经有 lua 库为此而设计，我发现的一个是:lrandom

There have been lua libraries made for this, one I found is: lrandom

它使用可能更适合您需求的 Mersenne Twister 算法.

It uses the Mersenne Twister algorithm which may suit your needs better.

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