Perlin Noise

Intro

Perlin Noise is algorithmically generated gradient noise used to simulate natural-looking patterns (e.g. terrain, clouds, textures) in Procedural Content Generation.

Perlin noise gives you a value (usually 0 → 1) for any position (x, y):

$$(x,y)\to smoothvalue$$

So if you sample across a grid:

0.2  0.25 0.3
0.22 0.27 0.31
0.24 0.29 0.33

Notice how values change slowly, not randomly.

Resources

• https://adrianb.io/2014/08/09/perlinnoise.html
• Unity- Mathf.PerlinNoise