noise expression function

Generates 3D noise.

See also: snoise, turb, sturb

The noise is calculated on a unit-spaced lattice and then internal points are interpolated from lattice points. This means the noise will be independent between points one unit distance apart. You can scale the inputs to achieve different frequencies.

This function can be used to apply noise to geometry. For example to make a bumpy grid you could append a point surface node and use the following in the pos Z field:

noise($TX, $TY, $TZ)