Animation

Procedural Pixel Horse — IK Gallop Animation

Victor M

@victormustar · 31.9K followers

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Sep 23, 2026

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A pixel-art horse galloping across a pastoral scene — every single pixel drawn in code, zero images involved. Claude Opus 5.5 generated one self-contained HTML file using vanilla JS and Canvas 2D. The 128×96 resolution horse has articulated legs driven by inverse kinematics across a 12-pose gallop cycle, complete with a scrolling background of fence posts, grass, and soft clouds. No libraries, no assets — pure procedural rendering that somehow nails the weight and rhythm of a real gallop.

Every pixel is procedurally drawn in vanilla JS + Canvas 2D — no images or external libraries whatsoever
Articulated legs use inverse kinematics across a 12-pose gallop cycle for convincing animal locomotion
Delivered as a single self-contained HTML file by Claude Opus 5.5 in one shot

“Opus 5.5 made this galloping horse (entirely in code every pixel drawn procedurally). One self-contained HTML file. Vanilla JS + Canvas 2D. No images or libraries. 128×96 pixels, articulated legs driven by inverse kinematics, 12-pose gallop... Something is happening...”
— @victormustar

canvas-2d procedural pixel-art animation one-shot inverse-kinematics retro playful animated