---
title: GKRidgedNoiseSource
framework: gameplaykit
role: symbol
role_heading: Class
path: gameplaykit/gkridgednoisesource
---

# GKRidgedNoiseSource

A procedural noise generator whose output is a type of multifractal coherent noise with sharply defined features.

## Declaration

```swift
class GKRidgedNoiseSource
```

## Overview

Overview Ridged noise is similar to Perlin noise (see the GKPerlinNoiseSource class), but with thinner features resembling natural phenomena such as forked lightning and mountain peaks.

Like all GKNoiseSource subclasses, a ridged noise source represents a noise generation algorithm and its parameters. To make use of a noise source, first create GKNoise object from it (and optionally apply operations to that noise object or combine it with other noise objects). Then create a GKNoiseMap object from your noise object, generating a concrete field of values that you can sample from directly or visualize using the SKTexture or SKTileMap class.

## Topics

### Creating a Noise Source

- [init(frequency:octaveCount:lacunarity:seed:)](gameplaykit/gkridgednoisesource/init(frequency:octavecount:lacunarity:seed:).md)

## Relationships

### Inherits From

- [GKCoherentNoiseSource](gameplaykit/gkcoherentnoisesource.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Procedural Noise

- [GKNoiseSource](gameplaykit/gknoisesource.md)
- [GKNoise](gameplaykit/gknoise.md)
- [GKNoiseMap](gameplaykit/gknoisemap.md)
- [GKCoherentNoiseSource](gameplaykit/gkcoherentnoisesource.md)
- [GKBillowNoiseSource](gameplaykit/gkbillownoisesource.md)
- [GKPerlinNoiseSource](gameplaykit/gkperlinnoisesource.md)
- [GKVoronoiNoiseSource](gameplaykit/gkvoronoinoisesource.md)
- [GKCylindersNoiseSource](gameplaykit/gkcylindersnoisesource.md)
- [GKSpheresNoiseSource](gameplaykit/gkspheresnoisesource.md)
- [GKCheckerboardNoiseSource](gameplaykit/gkcheckerboardnoisesource.md)
- [GKConstantNoiseSource](gameplaykit/gkconstantnoisesource.md)