Perlin 3D Scalar

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Perlin 3D Scalar

Node Description & Purpose:
This node generates Perlin noise and outputs the noise value as a scalar. The output value ranges between -1 and 1. Here is an example of the noise pattern generated by the node:

Perlin 3d.jpg
[Perlin 3D scalar noise]

Note that this image has been adjusted somewhat to make the pattern a bit clearer.

Node Type: Function


  • Scale: The scale setting controls the overall scale of the noise pattern generated. Increasing the scale value makes pattern larger overall.
  • Seed: The seed value controls the noise pattern generated. Each seed value generates a slightly different pattern.

A scalar is a single number. 1, 200.45, -45, -0.2 are all examples of scalar values.

A single object or device in the node network which generates or modifies data and may accept input data or create output data or both, depending on its function. Nodes usually have their own settings which control the data they create or how they modify data passing through them. Nodes are connected together in a network to perform work in a network-based user interface. In Terragen 2 nodes are connected together to describe a scene.