SubTerrain Tool

What it does

Sculpt Tools

• Raise / Lower — paint height up or down. Hold Ctrl to invert.
• Smooth — blend neighboring heights for softer terrain.
• Flatten — level to the height under the cursor (locks to a plane while dragging).
• Slope — click start, drag to end; grades from start height to end height along the line.
• Path — click start, drag direction; keeps a constant elevation strip (road/trench style).
• Set Height — flatten to an absolute world height from brush settings.
• Noise — add procedural variation. Hold Ctrl to invert.
• Hole — remove surface and collision in the brush area (per-texel punch-through, not enclosed volumes).

Brush & preview

• Large brushes — size up to 32,000 units 
• Brush preview on the terrain surface, matching the built-in terrain tool.
• Square masks included (hard, soft, rounded, outline); also uses the shared engine brush list.
• Undo/redo on height and control-map edits.

Status

• Live cursor readout: world Z, normalized height, brush texel footprint, and brush world span.
• Shows — when the cursor is not over terrain.

How to use it

1. Add the library.
2.  Open a scene with a Terrain component and select it.
3. Activate SubTerrain from the scene tools.
4. Pick a sub-tool from the toolbar or press 1–9.
5. Choose a brush mask and adjust Size / Opacity in the sidebar.
6. Left-click and drag on the terrain to sculpt or paint. Hold Ctrl on supported modes to invert.

Keyboard shortcuts

Credits