Create Shape Mask

KJNodes/masking/generate

CreateShapeMask

Creates a mask or batch of masks with the specified shape. Locations are center locations. Grow value is the amount to grow the shape on each frame, creating animated masks.

Example

JSON Example

{
  "class_type": "CreateShapeMask",
  "inputs": {
    "shape": "circle",
    "frames": 1,
    "location_x": 256,
    "location_y": 256,
    "grow": 0,
    "frame_width": 512,
    "frame_height": 512,
    "shape_width": 128,
    "shape_height": 128
  }
}

This example shows required inputs only. Connection values like ["node_id", 0] should reference actual node IDs from your workflow.

Inputs

Name	Type	Status	Constraints	Default
shape	ENUM 3 options circle square triangle	required	-	"circle"
frames	INT	required	min: 1, max: 4096, step: 1	1
location_x	INT	required	min: 0, max: 4096, step: 1	256
location_y	INT	required	min: 0, max: 4096, step: 1	256
grow	INT	required	min: -512, max: 512, step: 1	0
frame_width	INT	required	min: 16, max: 4096, step: 1	512
frame_height	INT	required	min: 16, max: 4096, step: 1	512
shape_width	INT	required	min: 8, max: 4096, step: 1	128
shape_height	INT	required	min: 8, max: 4096, step: 1	128

Outputs

Index	Name	Type	Is List	Connection Reference
0	mask	MASK	No	["{node_id}", 0]
1	mask_inverted	MASK	No	["{node_id}", 1]

How to connect to these outputs

To connect another node's input to an output from this node, use the connection reference format:

["node_id", output_index]

Where node_id is the ID of this CreateShapeMask node in your workflow, and output_index is the index from the table above.

Example

If this node has ID "5" in your workflow:

• mask (MASK): ["5", 0]
• mask_inverted (MASK): ["5", 1]

Package: comfyui-kjnodes