Doc:2.6/Manual/Textures/Types/Procedural/Clouds

Procedural textures: Clouds

Clouds Texture Panels

Clouds represent Perlin noise. In addition, each noise-based Blender texture (with the exception of Voronoi and simple noise) has a "Noise Basis" setting that allows the user to select which algorithm is used to generate the texture.

Often used for

Clouds, Fire, Smoke. Well-suited to be used as a Bump map, giving an overall irregularity to the material.

Result(s)

Greyscale (default) or RGB Color

Options

Greyscale

The standard noise, gives an intensity

Color

The noise gives an RGB value

Noise

Soft or Hard, changes contrast and sharpness

Size

The dimension of the Noise table

Depth

The depth of the Clouds calculation. A higher number results in a long calculation time, but also in finer details.

Technical Details

A three-dimensional table with pseudo-random values is used, from which a fluent interpolation value can be calculated with each 3D coordinate (thanks to Ken Perlin for his masterful article "An Image Synthesizer", from the SIGGRAPH proceedings 1985). This calculation method is also called Perlin Noise.