ComfyUI Node
BD Draw Ellipse
Draw with an ellipse shape OR use any existing mask as the shape. Shape priority: 1. mask input — any ComfyUI mask (lips, eyes, SAM3 output, etc.) 2. mask_from_packed — extract one R/G/B/A channel from packed_image as the mask 3. geometry — compute ellipse from x_center / y_center / radius_x / radius_y Feather is applied to whichever source is active. Two outputs (use one or both): image — fill_r/g/b blended over image (or blank canvas) packed_out — packed_image with mask written into pack_channel Feather: positive = outward from edge (interior stays 1.0), negative = inward, 0 = hard edge.
BD Draw Ellipse
- mask
- image
- packed_image
- image
- mask
- packed_out
◄mask_from_packednone►
◄pack_channelnone►
◄x_center0.500►
◄y_center0.500►
◄radius_x0.100►
◄radius_y0.100►
◄feather0►
◄fill_r128►
◄fill_g128►
◄fill_b128►
◄opacity1.00►
◄canvas_width512►
◄canvas_height512►
Category🧠BrainDead/Segmentation
Inputs (16)
| Name | Type | Default | Description |
|---|---|---|---|
| mask_from_packed | COMBO | none | Extract a channel from packed_image and use it as the shape mask. Useful when a packed RGBA already contains a useful mask in one channel (e.g. extract the line alpha to use as a draw region). Ignored when mask is connected. none = fall through to geometry. |
| pack_channel | COMBO | none | Write the final (feathered) mask into this channel of packed_image. none = pass packed_image through unchanged. R/G/B = overwrite that colour channel. A = overwrite alpha (channel appended if image has no alpha). |
| x_center | FLOAT | 0.5000–1 | Ellipse horizontal centre (0=left, 1=right). Ignored when mask or mask_from_packed is active. |
| y_center | FLOAT | 0.5000–1 | Ellipse vertical centre (0=top, 1=bottom). |
| radius_x | FLOAT | 0.1000–2 | Horizontal radius as fraction of image width. Set == radius_y for a circle on square images. |
| radius_y | FLOAT | 0.1000–2 | Vertical radius as fraction of image height. |
| feather | INT | 0-200–200 | Edge feather in pixels (applied to any shape source). Positive: expands outward — interior stays fully opaque. Negative: bleeds inward — fill fades toward its own edge. 0 = hard binary edge. |
| fill_r | INT | 1280–255 | Fill red. Default 128 = mid-grey. |
| fill_g | INT | 1280–255 | Fill green. |
| fill_b | INT | 1280–255 | Fill blue. |
| opacity | FLOAT | 1.000–1 | Blend strength over the base image. 1.0 = fully opaque. |
| maskopt | MASK | Shape mask. When connected, skips ellipse geometry and uses this mask directly (after feather). Accepts any ComfyUI mask — lip mask from BD_FaceSocketInfill, SAM3 output, etc. Priority: mask > mask_from_packed > geometry. | |
| imageopt | IMAGE | Base image for color-composite output. If not connected, a blank canvas (canvas_width × canvas_height) is used. | |
| packed_imageopt | IMAGE | Existing packed RGBA image. pack_channel: write the final mask into this channel. mask_from_packed: extract a channel as the shape source. Typical use: u_image3 RGBA pack (R=shadow, G=highlight, B=dark, A=line) for skin_shader.glsl. | |
| canvas_widthopt | INT | 5121–8192 | Canvas width when no image is connected. |
| canvas_heightopt | INT | 5121–8192 | Canvas height when no image is connected. |
Outputs (3)
| Name | Type | Description |
|---|---|---|
| image | IMAGE | Colour composite: shape blended over image (or blank canvas). |
| mask | MASK | Final feathered shape mask (1.0 inside, 0.0 outside). |
| packed_out | IMAGE | packed_image with mask written into pack_channel. Pass-through (or blank) when pack_channel='none'. |