Edge Detect

The Outline Tool. Identifies the boundary between filled and empty cells in a mask. This is essential for placing walls, fences, or decorative borders.

Ports

Port	Type	Description
Input	Bool Mask	The source mask to find edges in.
Output	Bool Mask	A new mask containing only the boundary pixels.

Details

The node checks every filled cell to see if it has at least one empty neighbour. If it does, it's marked as an "edge."

Parameters

• Edge Type:
  • Inner: The edge is inside the original shape.
  • Outer: The edge is just outside the original shape.
  • Both: A thick edge spanning both sides.

Potential Use Cases

• Cave Walls: Use the output to determine exactly where to spawn wall prefabs or collision boundaries.
• Coastlines: Identify the "water's edge" for placing unique sand or foam tiles.
• Territories: If you have a voronoi-based biome map, use Edge Detect to find the borders between biomes for placing mountain ranges or walls.