perlin_3d~

3D Perlin noise abstraction for Pure Data (Pd) with signal rate input/output (based on Perlin's improved version - see https://cs.nyu.edu/~perlin/noise/)

Installation

Install by adding the downloaded folder as perlin_3d~/ to Pd's path (e.g. in externals directory).

Usage

The abstraction perlin_3d~ requires the number of octaves as its first argument (it will default to 1 - but produce a clone error message).

Additional optional arguments:

• normalize or n flag to ensure that the sum of all octaves will not exceed 1.
• -persistence or -p parameter to set persistence (values < 1 will attenuate higher octaves, values > 1 will amplify them).
• -seed or -s parameter to initialize the gradient vector permutation with a given seed value. Without a value, the permutation gets reseeded randomly.
• -offset or -o parameter to set initial offset for x, y and z coordinates (useful if only one axis is used for input since values along 0-coordinates create a less noisy pattern).

Inlets are:

1. x-coordinate
2. y-coordinate
3. z-coordinate
4. persistence

See help patch for more explanations and examples

Explanations on Perlin noise:

• https://en.wikipedia.org/wiki/Perlin_noise