ImageDrawEllipseByContainer

ImageDrawEllipseByContainer is the ImageDrawEllipse you don't have to size by hand: feed it an image and it draws the ellipse at that image's exact dimensions, with the same fill/outline controls and the same anti-aliasing. It's the container-flavored version of the node, useful whenever the ellipse should track an existing image in your graph instead of a hardcoded resolution.

How it works

It reads the width and height of the first frame of the container input and forwards them into ImageDrawEllipse, which does the real work: RGBA canvas, PIL ImageDraw.ellipse inside a normalized bounding box, supersample by SSAA, downscale with method. As with all ByContainer draw nodes, the container defines size only - the ellipse is drawn on a fresh transparent canvas, so the container's pixels don't show through. If you want the ellipse on top of the container's content, draw it and composite.

Inputs that matter:

• container - any IMAGE; its size becomes the canvas.
• start_x / start_y, end_x / end_y - the ellipse's bounding box as 0–1 fractions of the canvas; defaults 0,0 → 1,1 span the whole thing (a square box makes a circle).
• outline_size - outline stroke width, default 1.
• outline_red / green / blue / alpha - outline color, default black.
• fill_red / green / blue / alpha - fill color, default white.
• SSAA (default 4) and method (default lanczos).

Why you'd use it

The usual container pattern: one ImageContainer (or an ImageContainerInheritance* node) drives the size of both your drawn shapes and your compositing, so the whole graphic scales together when you swap the container. A vignette disc that always exactly matches the image it's meant to sit under, for instance, without you rechecking dimensions.

The gotcha

Output is RGBA with a transparent background - the ellipse floats on a checkerboard in Preview. Great for compositing, but if you expected a solid backdrop, composite the result onto a container yourself. And don't expect the container's color to bleed through; the canvas starts as (0,0,0,0).

Installing Allor

Part of the Allor Plugin (Nourepide/ComfyUI-Allor), ~90 nodes from early 2024:

cd ComfyUI/custom_nodes
git clone https://github.com/Nourepide/ComfyUI-Allor
cd ComfyUI-Allor
pip install -r requirements.txt

Restart, or search "Allor Plugin" in ComfyUI Manager - the more reliable route given the pack's history of manual-install import errors (reinstall via Manager was the repeated community fix). Dependencies are rembg + onnx; drawing needs no models.

Gotchas that apply to the whole pack

The repo was rebased to strip images from history (shrank ~344×), so git pull/auto-update can occasionally break - the README's update-troubleshooting docs cover it; delete-and-reclone is the blunt fix. [Allor] console lines at startup are the pack writing config.json and checking updates, not an error.