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Canvas Generative Art

Practical rules and code patterns for building performant generative art with the Canvas 2D API.

Design & UIIntermediate★ 216⑂ 17AI score 8/10Last updated: Jul 31, 2026

What it does

  • Gives you DPR-aware canvas setup, a ResizeObserver resize handler, and a delta-capped requestAnimationFrame loop.
  • Ships proven patterns: particle pooling (zero runtime allocation), noise-driven flow fields, fBm octaves, L-system turtle graphics, and double buffering for trail effects.
  • Compares Perlin / Simplex / Worley noise so you pick the right one for terrain, motion, or cellular looks.
  • A "Do Not" section blocks classic performance traps: clearRect killing trails, getImageData inside the loop, allocating objects in hot loops.

Who it's for

  • Frontend developers building interactive backgrounds and hero animations.
  • Creative coders who can produce visuals but struggle to hold 60fps.
  • Anyone working in raw Canvas 2D instead of p5.js or similar wrappers.

Example uses

  1. "Build a 5,000-particle flow field background driven by simplex noise" → grid of angles, pooled particles, fading trails.
  2. "Draw a fractal tree for our landing page" → axiom, production rules, turn angle, and turtle renderer.
  3. "My canvas looks blurry on Retina" → applies devicePixelRatio scaling plus a resize handler.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/AThevon/genjutsu/HEAD/skills/_jutsu/canvas-generative/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/_jutsu/canvas-generative folder from the GitHub repo AThevon/genjutsu into my ~/.claude/skills/canvas-generative/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/AThevon/genjutsu.git /tmp/genjutsu && mkdir -p ~/.claude/skills && cp -r /tmp/genjutsu/skills/_jutsu/canvas-generative ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open your terminal.
  2. Clone the repository: git clone https://github.com/AThevon/genjutsu.git
  3. Create the skills folder if needed: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r genjutsu/skills/_jutsu/canvas-generative ~/.claude/skills/
  5. Verify supporting files came along: ls ~/.claude/skills/canvas-generative (look for references/).
  6. Restart Claude Code and try a prompt like "make a canvas flow field animation" to confirm the skill loads.
View source on GitHub ↗License: MIT