Band Node

Band generates a bounded capsule-shaped mask: the value is 1 on a core segment defined by the center, angle and length, and falls off to 0 at the given width following the chosen radial profile. A zero length degenerates to a radial bump; lengths larger than the domain give an infinite strip, so placing the center on or beyond a domain edge produces latitude bands / polar caps.

Inputs

Name	Type	Description
dr	VirtualArray	Optional noise field used to locally modulate the band falloff distance (edge displacement).
envelope	VirtualArray	Heightmap used as a post-process amplitude multiplier for the generated noise.
offset	VirtualArray	Optional noise field used to locally offset the band axis position.

Outputs

Name	Type	Description
output	VirtualArray	Generated band mask.

Parameters

Name	Type	Description
Angle	Float	Orientation angle of the band axis in degrees.
Center	Vec2Float	Band center in normalized coordinates (the Y coordinate is measured from the bottom).
Activate	Bool	Enables or disables the built-in drainage noise. If an external noise input is provided, it overrides this default noise.
Spatial Frequency	Float	Base spatial frequencies in the X and Y directions.
Amplitude	Float	Noise amplitude.
Type	Enumeration	Noise type.
Seed	Random seed number	Random seed number. The random seed is an offset to the randomized process. A different seed will produce a new result.
Smoothness	Float	Controls the resulting smoothness of the fractal layering process.
Length	Float	Core segment length in normalized domain units. A zero length degenerates to a radial bump; lengths larger than the domain give an infinite strip (latitude band / polar cap).
Gain	Float	Mid-centered gain transformation applied to the elevation values. This is a non-linear recurve operator centered around the mid elevation (typically 0.5). Increasing the gain pushes values toward the minimum and maximum elevations, creating flatter low/high regions with a steeper transition around the midpoint.
Gamma	Float	Standard gamma correction applied to the elevation values. This is a monotonic power-law remapping that shifts emphasis toward low or high elevations, making the overall shape sharper or bulkier without changing its ordering.
Invert Output	Bool	Inverts the output values after processing, flipping low and high values across the midrange.
Mix Factor	Float	Mixing factor for blending input and output values. A value of 0 uses only the input, 1 uses only the output, and intermediate values perform a linear interpolation.
Mix Method	Enumeration	Method used to combine input and output values. Options include linear interpolation (default), min, max, smooth min, smooth max, add, and subtract.
Remap Range	Value range	Linearly remaps the output values to a specified target range (default is [0, 1]).
Saturation Range	Value range	Modifies the amplitude of elevations by first clamping them to a given interval and then scaling them so that the restricted interval matches the original input range. This enhances contrast in elevation variations while maintaining overall structure.
Smoothing Radius	Float	Defines the radius for post-processing smoothing, determining the size of the neighborhood used to average local values and reduce high-frequency detail. A radius of 0 disables smoothing.
Profile	Enumeration	Radial profile used for the falloff.
Profile Sharpness	Float	Additional sharpness parameter for the radial profile.
Width	Float	Falloff half-width in normalized domain units.

Example

Corresponding Hesiod file: Band.hsd. Use [Ctrl+I] in the node editor to import a hsd file within your current project.

Note

Example files are kept up-to-date with the latest version of Hesiod. If you find an error, please open an issue.