init(frequency:octaveCount:persistence:lacunarity:seed:)

Declaration

init(frequency: Double, octaveCount: Int, persistence: Double, lacunarity: Double, seed: Int32)

Parameters

• frequency:

  The initial value for the frequency property, which determines the number and size of visible features in any given unit area of generated noise.

• octaveCount:

  The initial value for the Octavecount property, which determines the complexity of generated noise.

• persistence:

  The initial value for the Persistence property, which determines the decrease in amplitude between octaves and thus the roughness of generated noise.

• lacunarity:

  The initial value for the Lacunarity property, which determines the increase in frequency between octaves and thus the gradation between coarseness and uniformity in generated noise.

• seed:

  The initial value for the Seed property, which determines the overall structure of generated noise.

Return Value

A new noise source.

Discussion

To make use of this noise source, create a 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.

See Also

Creating a Noise Source

• persistence