Noise generator

Generate noise values for procedural generation.

Authors and contributors to this experimental extension: Add00, VictrisGames, D8H.

Noise can be useful for many procedural generation cases such as:

Terrain, top down or side view (open the project online)
Object positioning (tree, stars...)
Curves (roads, rivers...)
Textures (fog, milky way...)
Screen shake
Many other things

This extension contains expressions to generate Simplex noise values in 1, 2, 3 and 4 dimensions. A "seed" allows to generate the same world again later on instead of having to save the whole generated world.

Version 2.0.0 compatibility break:

Seeds doesn't give the same result as with version 1.x.x

Actions

Create a noise generator
Create a noise generator with default settings (frequency = 1, octaves = 1, persistence = 0.5, lacunarity = 2).

See parameters

Parameter 1 (string): Generator name

Delete a noise generator
Delete a noise generators and loose its settings.

See parameters

Parameter 1 (string): Generator name

Delete all noise generators
Delete all noise generators and loose their settings.

See parameters

Noise base frequency
Change the base frequency used for noise generation. A lower frequency will zoom in the noise.

See parameters

Parameter 1 (🔢 Number): Frequency
Parameter 2 (string): Generator name

Noise lacunarity
Change the lacunarity used for noise generation. At its default value "2", it doubles the frequency at each octave.

See parameters

Parameter 1 (🔢 Number): Lacunarity
Parameter 2 (string): Generator name

Noise looping period on X
Change the looping period on X used for noise generation. The noise will wrap-around on X.

See parameters

Parameter 1 (🔢 Number): Looping period on X
Parameter 2 (string): Generator name

Noise looping period on Y
Change the looping period on Y used for noise generation. The noise will wrap-around on Y.

See parameters

Parameter 1 (🔢 Number): Looping period on Y
Parameter 2 (string): Generator name

Noise octaves
Change the number of octaves used for noise generation. It can be seen as layers of noise with different zoom.

See parameters

Parameter 1 (🔢 Number): Octaves
Parameter 2 (string): Generator name

Noise persistence
Change the persistence used for noise generation. At its default value "0.5", it halves the noise amplitude at each octave.

See parameters

Parameter 1 (🔢 Number): Persistence
Parameter 2 (string): Generator name

Noise seed
The seed is a number used to generate the random noise. Setting the same seed will result in the same random noise generation. It's for example useful to generate the same world, by saving this seed value and reusing it later to generate again a world.

See parameters

Parameter 1 (🔢 Number): Seed 15 digits numbers maximum

Expressions

Expression	Description
`Noise::Frequency(string)`	The base frequency used for noise generation.
	string	Generator name
`Noise::Lacunarity(string)`	The lacunarity used for noise generation.
	string	Generator name
`Noise::Noise1d(string, number)`	Generate a number between -1 and 1 from 1 dimensional simplex noise. The "Map" expression from Extended Math extension can be used to map values to any chosen bounds.
	string	Generator name
	🔢 Number	X coordinate
`Noise::Noise2d(string, number, number)`	Generate a number between -1 and 1 from 2 dimensional simplex noise. The "Map" expression from Extended Math extension can be used to map values to any chosen bounds.
	string	Generator name
	🔢 Number	X coordinate
	🔢 Number	Y coordinate
`Noise::Noise3d(string, number, number, number)`	Generate a number between -1 and 1 from 3 dimensional simplex noise. The "Map" expression from Extended Math extension can be used to map values to any chosen bounds.
	string	Generator name
	🔢 Number	X coordinate
	🔢 Number	Y coordinate
	🔢 Number	Z coordinate
`Noise::Noise4d(string, number, number, number, number)`	Generate a number between -1 and 1 from 4 dimensional simplex noise. The "Map" expression from Extended Math extension can be used to map values to any chosen bounds.
	string	Generator name
	🔢 Number	X coordinate
	🔢 Number	Y coordinate
	🔢 Number	Z coordinate
	🔢 Number	W coordinate
`Noise::Octaves(string)`	The number of octaves used for noise generation.
	string	Generator name
`Noise::Persistence(string)`	The persistence used for noise generation.
	string	Generator name
`Noise::Seed()`	The seed used for noise generation.

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