dithered-motif-site

Use when building a "dithered particle-field" animated hero/background — a still or video subject made of many small discrete elements (sparks, falling ash, a rose window, a flock, crowds, falling particles, repeated architecture) rendered as an animated Bayer-dithered dot field on a canvas, with pointer-reactive warp, used as a full-bleed page background. Covers the whole manual pipeline: (1) writing Higgsfield `nano_banana_pro` image prompts and `seedance_2_0` (image-to-video) prompts whose SUBJECT is dither-compatible — the rule that a solid object (one face, one animal, one smooth mass) turns into an illegible grey blob and only "many small discrete elements" survives dithering, and that video prompts MUST demand a locked-off static camera or the loop becomes unusable; (2) ffmpeg frame extraction (~11fps, crop any painted border before scale, flatten background noise); (3) the canvas dither engine itself — downscale-to-buffer, Rec.709 luma, percentile auto-levels PINNED for the whole sequence (never recomputed per frame, or density visibly pulses), the invert flag (decided by dark-on-light vs light-on-dark SOURCE, independent of page color scheme), 8x8 Bayer ordered-dither quantization, and batched-fillStyle circle/square cell drawing; (4) crossfade-the-wrap looping for non-cyclic motifs (most natural motifs have no true loop point — do not hunt for a seam that doesn't exist) vs scored-seam looping for genuinely cyclic ones; (5) pointer-interaction by displacing sampling coordinates (not drawn output) — directional lean for wind/fall, rotational twist for radial subjects, gentle scatter for swarms, and why radial ripple is almost always wrong; (6) page composition and text legibility over a dot field via gradient scrim, mix-blend-mode:multiply (light grounds only), or a solid backing panel. Triggers on "dithered background", "dither animation", "Bayer dither canvas", "particle dither hero", "dot field animation", "dithered video loop", "ordered dither ordered-di

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