Overview
Adds a hand-drawn feel by perturbing RegionMap boundaries with noise. Generated regions tend to have geometric boundaries; even a slight distortion greatly improves the natural appearance of rock, soil, and water.
It distorts RegionMap boundaries with internal noise or a guide image. Use it to add natural variation to overly regular cells and strata.
Usage tips
- Place it immediately after generation:
region_bands / region_cells → region_warp → region_fill. Start with a restrained displacement of 2–4 pixels. - Strong distortion can break thin regions apart. If that happens, clean them up
downstream with
region_merge_small. - Guide Image mode is an advanced option for controlling the distortion direction. Internal Noise is sufficient in most cases.
Related nodes
region_bands/region_cells/region_strata— sources to distortregion_merge_small— cleans up after distortionregion_fill/region_border— finishing fill and lines
Key parameters
| ID | Contents |
|---|---|
source |
Noise uses internal noise; Image distorts using brightness differences in the guide image |
amount |
Maximum displacement in pixels |
scale |
Noise size |
iterations |
Number of distortion passes |
seed |
Seed for noise and preview colors |
show_ids |
Display ID labels in the Inspector preview |
Horizontal and vertical wrapping on the RegionMap are preserved. In a wrapped direction, references across the edge also wrap around.
How to use
Insert this after Region Cells or Region Bands when the boundaries look too
regular. Start with a small amount, then increase iterations if needed. Strong
settings easily damage thin regions and small islands, so a downstream Region
Merge Small makes the result easier to handle.
With source = Image, brightness differences in the guide input inform the
distortion direction. When no guide is needed, source = Noise is the stable
choice.
When source = Image and guide is unconnected, the node returns the RegionMap
unchanged and displays a warning. Connect a guide or switch back to Noise to clear
the warning.
This node edits regions to introduce natural variation. To increase the number of regions, use an upstream generator or Region Split Islands / Region Compose.