Good Perlin noise resources/implementation?

Question

Are there any good resources out there detailing Perlin noise generation? I understand that most languages have noise generating libraries available, but I'm interested in creating my own for fun/experience. I've already looked at this, which seems pretty popular, but it only gives an in-depth explanation of one dimensional noise. Google searches have been relatively unhelpful so far, as most of them focus on applications instead of how to create a generator.

Books and/or websites are welcome, even if their focus is not the generation itself so long as it gives a thorough explanation of an implementation, or at least the concepts involved so I can "discover" my own.

Answer 1

Well this link here has some decent information. There is also Ken Perlin's site. A quick search on Google provides a lot of generators and implementations in different languages.

Here is one generator I know of that has source available (scroll down to the bottom of the page).

You may also want to search around http://www.gamedev.net as there are a lot of forum posts etc. on perlin noise generation.

Answer 2

Here's one that I wrote and released on Github. It's a 4-dimensional Perlin generator written in Objective-C. http://czgarrett.com/code/2011/05/18/perlin-noise-generator-for-ios.html