What is Perlin Noise?
Perlin noise was designed to have the following properties: • apparent randomness, it should look random to the human eye • reproducable, meaning with the same input it will always give the same output • smooth transition between values, meaning no sharp edges Perlin noise can be used in any place where you need a smooth noise function, for example to produce procedurally generated textures, generate height data for terrain, etc. Perlin noise can be generated in any dimension desired, for example if you wish to use perlin noise to generate an animated volumetric fog effect in your game you would use a 4 dimensional perlin noise to generate the fog data. More interesting effects are obtained by combining several layers of perlin noise with different scaling factors. Only your imagination sets a limit for what you can use perlin noise for.
