Pattern Generator

The PatternGeneratorNode is the workhorse of the orion4d/illusion_node pack: one node that procedurally generates stripes, a checkerboard, random dots, a solid fill, a gradient, or blocky noise. Default size is a modest 128×128, which tells you what it's really for - making tiles. This is the node that feeds the autostereogram creator its pattern, or produces a quick seamless-ish texture you can tile up with the pack's Tile Image Repeater.

How it works

Six pattern_type modes, all computed in numpy/Pillow at the width × height you set. The catch - and it's the one genuinely confusing thing about this node - is that parameter1 and parameter2 mean different things in different modes. The author's tooltips are the Rosetta stone:

• Stripes - parameter1 is stripe width.
• Checkerboard - parameter1 is square size.
• Random Dots - parameter1 is density as a percentage, parameter2 is max dot radius.
• Solid Color - fills with color1_hex. Parameters ignored.
• Gradient - parameter1 is direction (0 = left-to-right, 1 = top-to-bottom, 2 = right-to-left, 3 = bottom-to-top).
• Noise - parameter1 of 0 gives color noise, 1 gives grayscale; parameter2 is the block scale (1 = pixel-level).

seed drives the randomness in the dots and noise modes, so you can regenerate the same texture.

The inputs that matter

• width / height (default 128 each, range 16–4096, step 8): output size.
• pattern_type (default Noise): the six modes above.
• color1_hex / color2_hex (default #000000 / #FFFFFF): the two colors.
• parameter1 / parameter2: mode-dependent, see above.
• seed (default 0): random source for dots and noise.

One IMAGE output. The practical sweet spot: generate a busy pattern here and feed it into the autostereogram node as the pattern input - a dense random-dot field is literally what classic Magic Eye images are made of.

Install

Ships in orion4d/illusion_node ("ComfyUI Illusion & Pattern Nodes"), all nodes under the "illusion" category. ComfyUI Manager search "Illusion" will find it, or:

cd ComfyUI/custom_nodes
git clone https://github.com/orion4d/illusion_node.git

Restart ComfyUI afterward. The pack's requirements.txt is numpy, torch, and Pillow - nothing a stock ComfyUI doesn't already have - and there are no model files to fetch.

Common issues

Nine times out of ten, confusion here is "I set parameter1 to 10 expecting stripes and got noise" - because the parameter's meaning changes with the mode. Check the tooltip on the widget itself before you panic. Also watch the defaults: the Noise default with parameter2 at 1 gives you pure pixel soup, which is correct behavior, not a bug. If you want chunky blocks instead, raise the block scale. And remember width/height default to 128 - generate up to whatever you need, but the node was designed as a tile factory, so think in tile sizes.