Noise

What is Noise?

In procedural generation, noise refers to a set of randomly* generated values. These values are produced by various noise algorithms, mathematical functions that provide different patterns of numerical values.

Using noise is one of the primary ways to distribute things in the world, such as where biomes are placed, how terrain is shaped, and where features such as flora and trees generate.

Just about every random aspect of world generation in Terra is influenced by noise to some degree, so having a basic understanding of it will be useful in configuring and modifying generators.

Contents

• Configuring Noise Samplers
  • Parameters
    • Common Noise Sampler Parameters
      • Salt
    • Noise Tool
      • Frequency
  • Samplers In Context
  • Other Noise Sampler Techniques
    • Fractalization
    • Domain Warping
  • Sampler Composition
• How Noise Distributes Things
  • Thresholds
    • Planting Grass
  • Distributing Lists
    • Weighted Lists
• How Noise Samplers Work
  • Noise Basics
    • Seeds
    • Noise Samplers
      • Multiple Dimensions
      • Higher Dimensions
    • Salt
    • Determinism
    • Coherent Noise
      • What’s The Difference?
    • Flavors of Noise