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I m having difficulty understanding a lot of the highly mathematical papers available online describing how Perlin noise generation works, and I m wondering if anyone could point me in the direction of a more accessible introduction. I am looking to use Perlin noise in an application to create 2D textures.

Answer 1

It s worth noting that the original Perlin noise algorithm has been deprecated by the author. Ken Perlin designed a new version: Simplex Noise

There is a good explanation of Simplex Noise with Java implementation here.

Answer 2

Look at the book Texturing and Modeling, A Procedural Approach, starting in page 67 there s a nice description and source code for gradient noises, perlin noise is just another gradient noise.

There s also a implementation in GPU Gems 2.

Perlin noise itself doesn t use much advanced math, you only need to know about linear interpolation, lattices and random values.

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