AbsSinWave 📅🅕🅝

AbsSinWave is the absolute-value sine in FizzNodes' wave family: take a sine wave, fold the negative half up, and you get a series of pulses that dip from a ceiling and bounce back. Where plain SinWave swings smoothly below and above center, this one stays positive and "throbs." It's the shape for pulsing intensities, rhythmic effects, anything that needs a repeated peak-and-settle motion.

The formula:

max_value - (|sin(current_frame / phase)| * amplitude)

Inputs are phase (frames per pulse), amplitude (how far the value drops), max_value (the ceiling the peaks rest at), and current_frame. Note that x_translation also appears in the schema, but in the current shipped code it's a no-op - accepted, not applied. Don't fiddle with it expecting a phase shift. Outputs are FLOAT and INT (truncated), single values per frame.

AbsSinWave vs AbsCosWave vs the plain waves

Honestly, the FizzNodes wave menu is a small zoo of near-identical oscillators, and AbsSinWave and AbsCosWave produce practically the same pulsing shape - a half-cycle difference at most. Pick one and don't overthink the distinction; the real choice is between the plain waves (smooth oscillation through zero) and the abs waves (positive-only pulses). If your value going negative would break something downstream - a strength, a zoom amount - the abs family is the safer bet. If you want an actual oscillation, use the non-abs ones. All the wave nodes share the quirk of printing each output to the console as it runs.

Install

cd ComfyUI/custom_nodes && git clone https://github.com/FizzleDorf/ComfyUI_FizzNodes.git
cd ComfyUI_FizzNodes && pip install -r requirements.txt

Or install "FizzNodes" via ComfyUI Manager and restart. No models, no heavy deps - a single numpy expression doing all the work.