Region Scatter

Overview

Creates a RegionMap by scattering small spot-shaped regions. It places ground accents such as stones, bubbles, leaves, ore, or grime. Because placements remain regions, they can later be recolored individually or converted to masks.

• type_id: region_scatter
• category: Generate/Region/Create

It directly generates scattered small areas as a RegionMap, suited to accent regions such as stones, bubbles, leaves, grime, or ore speckles.

Usage tips

• It is commonly paired with region_compose to place spots over strata. On its own, use region_mask → mask_scatter to place stamps at spot locations.
• Use placement=Random when occasional clusters are useful, or KeepApart when ore, bubbles, and stones should stay separated. Random remains the default, preserving existing project placement.
• min_distance is the center gap. Start near twice max_radius to reduce blob overlap. If Count does not fit, lower the gap or reduce count.
• Change only seed to batch-produce placement variants; it pairs well with batch_render.
• Limit the scatter area with the mask input, such as stones only on ground. A mask from region_mask completes the region-based workflow.

Main parameters

Combine it with a compositing node that mixes into an existing RegionMap to use the result as an asset accent.

With KeepApart, wrap_x / wrap_y also measures centers across opposite edges as neighbors. This prevents a seamless tile from becoming unusually dense only at its seam.

When mask is connected, scattering occurs only in its valid range and the outside is treated as OUTSIDE. Even with background on, background region 0 exists only inside the mask. Mask pixels satisfy 明度 * アルファ >= 0.5. The arbitrary mask shape takes priority, so wrap_x / wrap_y are disabled for both painting and spacing.

If all requested centers do not fit in KeepApart mode, the node outputs those that fit and warns on min_distance. It never silently shrinks the requested gap.

If max_radius is smaller than min_radius, evaluation swaps the effective bounds and displays a warning. The stored parameter values are not rewritten.

To add ore, grime, bubbles, or stones after creating a base region, use Region Scatter -> Region Compose. To pass only scattered regions into image processing, connect Region Mask downstream.

Related nodes

• region_compose — overlay onto base regions
• region_mask — convert scattered regions to a mask
• mask_scatter — scatter image stamps directly instead of regions
• path_array — scatter along or inside a path in Scatter mode