ComfyUI-PolyMask

A ComfyUI custom node for creating polygon masks directly in the workflow editor.

Features

• Poly Mask Loader - Single polygon mask creation
• Poly Mask Loader (Multi) - Up to 6 polygons to contribute to the shape of one mask via additive/subtractive modes

Controls

| Action | Result | |--------|--------| | Left click on canvas | Add point to active polygon | | Left click + drag point | Move point | | Left click on line | Insert new point | | Right click on point | Delete point | | Click button in + row | Set polygon to additive mode & select | | Click button in − row | Set polygon to subtractive mode & select |

Polygon Modes

| Mode | Symbol | Effect | |------|--------|--------| | Additive | + | Adds polygon shape to the mask | | Subtractive | − | Removes polygon shape from the mask |

• Polygons are processed in order (1→6)
• Higher-numbered polygons override lower ones in overlapping areas
• Subtractive polygons appear with darker colors and dashed lines

Parameters

• Feathering - Blur/soften mask edges (0-100)

Installation

Option 1: Git Clone

cd ComfyUI/custom_nodes/
git clone https://github.com/Carasibana/ComfyUI-PolyMask.git

Option 2: Download ZIP

1. Download the repository as ZIP
2. Extract to ComfyUI/custom_nodes/ComfyUI-PolyMask

Then restart ComfyUI.

Usage

Find the nodes under the image category:

• Poly Mask Loader - For single polygon masks
• Poly Mask Loader (Multi) - For multiple polygon masks with additive/subtractive support

Example Workflow

1. Add a Poly Mask Loader (Multi) node
2. Select an image
3. Click a number in the + row to create an additive polygon
4. Draw points on the canvas to define the mask area
5. Optionally click a number in the − row to create a subtractive polygon that cuts out from existing masks
6. Adjust feathering as needed

License

MIT License - see LICENSE for details.

Author

Carasibana