3x Entangled Curves [0,1] (Wavelength)

Three prompts is where you stop being able to eyeball the timing. With two, the crossfade is obvious. With three, hand-writing a schedule that keeps the mix balanced is where the errors live - and this node removes the math entirely. It emits three phase-locked sine curves that sum to ~1 at every frame, so each prompt takes a turn leading while the other two hold the blend together.

It's the 3x member of the "Entangled Curves" family in dmarx's ComfyUI-Keyframed, and this flavor is driven by wavelength: the number you type is frames per full cycle. The default 12 means the emphasis completes one full lap through all three prompts every 12 frames. Want a slower, more stately rotation? Crank it to 24 or 36.

How it works

Three SinusoidalCurves with phases a third of a turn apart, each with amplitude 1/3 plus a small floor so none fully zeroes - fully zeroed conditions create "sharp edges" in the traversal, per the README. The balanced phases make the three curves sum to ~1 at all times. Each swings between ~0 and ~2/3, so the leading prompt tops out at two-thirds strength while the other two split the remainder. The lead rotates smoothly; nothing snaps on or off.

One input, wavelength (FLOAT, default 12, stepped at 0.5). Three KEYFRAMED_CURVE outputs.

Wiring it up

Standard superposition pattern: each curve output into its own Apply Curve To Conditioning node with its prompt's conditioning, merge with KfConditioningAdd, then into the sampler. With AnimateDiff, every frame gets a different three-way blend.

Installing it

Ships in ComfyUI-Keyframed. ComfyUI Manager: search "ComfyUI-Keyframed". Or:

cd ComfyUI/custom_nodes
git clone https://github.com/dmarx/ComfyUI-Keyframed

Restart ComfyUI after. No models to download; the only dependency is the keyframed library, auto-installed on first startup - the first load can hang while pip runs, and pip install keyframed by hand if that fails. The node is under keyframed → entangled [0-1]. Three prompts with a wavelength dial: it's the most approachable member of the family that still feels like real superposition.