L-system tree · mercury-3
Output generated Cost / run $0.0172 Runtime 97.6s
Prompt for this run
Build an animated L-system tree using the provided p5.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `p5.min.js` (global `p5`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Define an axiom, explicit production rules, and an angle for a branching L-system. Expand the grammar and interpret it to draw a connected trunk and branches; an unrelated random-line drawing is not sufficient. - Show progressive growth from the trunk toward branch tips. Once grown, the tree sways gently in the wind while child branches remain attached to their parents. - Provide a generation control from 1 to 5 and Regrow. Changing generation or pressing Regrow restarts growth using the same chosen grammar. - Bound grammar expansion and keep the whole tree visible at every supported generation. - Use procedural graphics. Choose branch styling, leaves, colors, and the particular branching grammar freely. Verify: Sample branch growth and inspect visible parent-child connections. Change the generation setting and check that growth restarts with a different branching structure. If growth has completed during inspection, sample the wind motion as well.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
METRICS
Transcript · 47 messages
Build an animated L-system tree using the provided p5.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `p5.min.js` (global `p5`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Define an axiom, explicit production rules, and an angle for a branching L-system. Expand the grammar and interpret it to draw a connected trunk and branches; an unrelated random-line drawing is not sufficient. - Show progressive growth from the trunk toward branch tips. Once grown, the tree sways gently in the wind while child branches remain attached to their parents. - Provide a generation control from 1 to 5 and Regrow. Changing generation or pressing Regrow restarts growth using the same chosen grammar. - Bound grammar expansion and keep the whole tree visible at every supported generation. - Use procedural graphics. Choose branch styling, leaves, colors, and the particular branching grammar freely. Verify: Sample branch growth and inspect visible parent-child connections. Change the generation setting and check that growth restarts with a different branching structure. If growth has completed during inspection, sample the wind motion as well.
I'll start by checking the current directory to confirm p5.min.js is present.
{"command":"ls -la /tmp/job-OA6pBO && head -c 300 /tmp/job-OA6pBO/p5.min.js"}total 1024 drwx------ 3 node node 4096 Oct 23 09:54 . drwxrwxrwt 8 root root 4096 Oct 23 09:54 .. drwxr-xr-x 3 node node 4096 Oct 23 09:54 .home -rw-r--r-- 1 node node 1034532 Oct 23 09:54 p5.min.js /*! p5.js v1.9.4 May 21, 2024 */ !function(e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).p5=e()}(function(){var s,t
/tmp/job-OA6pBO/index.html (10265 bytes)Successfully wrote to /tmp/job-OA6pBO/index.html
{"action":"reload"}{"console":["error: this._renderer.buildGeometry is not a function"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"command":"grep -o \"buildGeometry\" /tmp/job-OA6pBO/p5.min.js | head; echo \"---\"; grep -o \"buildGeometry[^,;)]*\" /tmp/job-OA6pBO/p5.mibuildGeometry buildGeometry buildGeometry --- buildGeometry=function(e buildGeometry(e buildGeometry"
{"path":"/tmp/job-OA6pBO/index.html","edits":[{"oldText":" function buildGeometry(gen) {","newText":" function computeLSystemGeometry(gen)Successfully replaced 2 block(s) in /tmp/job-OA6pBO/index.html.
{"action":"reload"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"command":"cd /tmp/job-OA6pBO && node -e '\nconst RULES={X:\"F[+X][-X]FX\",F:\"FF\"};\nconst AXIOM=\"X\";\nfunction expand(gen){let s=AXIOMgen 1 len 11 F 2 X 3 open 2 close 2 gen 2 len 43 F 10 X 9 open 8 close 8 gen 3 len 143 F 38 X 27 open 26 close 26 gen 4 len 451 F 130 X 81 open 80 close 80 gen 5 len 1391 F 422 X 243 open 242 close 242
{"command":"sleep 2"}(no output)
{"action":"screenshot"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"path":"/tmp/job-OA6pBO/index.html","edits":[{"oldText":" meta = { minX, maxX, minY, maxY, maxDepth, K, maxKey, elems };\n computeFitSuccessfully replaced 3 block(s) in /tmp/job-OA6pBO/index.html.
{"path":"/tmp/job-OA6pBO/index.html","edits":[{"oldText":" function easeInOut(t) { return t < 0.5 ? 4 * t * t * t : 1 - Math.pow(-2 * t + 2Successfully replaced 2 block(s) in /tmp/job-OA6pBO/index.html.
{"action":"reload"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"command":"sleep 7"}(no output)
{"action":"inspect"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK","log: [check] wind sway at a tip: 1.66px x 1.76px over 600ms OK","log: [check] wind sway at a tip: 7.47px x 2.48px over 600ms OK","log: [check] wind sway at a tip: 6.16px x 0.39px over 600ms OK","log: [check] wind sway at a tip: 1.02px x 2.14px over 600ms OK","log: [check] wind sway at a tip: 7.23px x 2.25px over 600ms OK","log: [check] wind sway at a tip: 6.55px x 0.19px over 600ms OK"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"path":"/tmp/job-OA6pBO/index.html","edits":[{"oldText":" window.addEventListener('keydown', e => {\n const n = parseInt(e.key, 10)Successfully replaced 1 block(s) in /tmp/job-OA6pBO/index.html.
{"action":"reload"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"action":"key","text":"5"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [check] gen switch 3 segs=38 leaves=27 -> gen=5 segs=422 leaves=243 progress=0.000 growing=true"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"action":"click","x":763,"y":717}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [check] gen switch 3 segs=38 leaves=27 -> gen=5 segs=422 leaves=243 progress=0.000 growing=true","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"action":"click","x":500,"y":717}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [check] gen switch 3 segs=38 leaves=27 -> gen=5 segs=422 leaves=243 progress=0.000 growing=true","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [lsys] gen=1 symbols=11 segments=2 leaves=3 depth=1","log: [check] attached joints 2/2 OK","log: [check] gen switch 5 segs=422 leaves=243 -> gen=1 segs=2 leaves=3 progress=0.000 growing=true"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"command":"sleep 6"}(no output)
{"action":"inspect"}{"console":["log: [lsys] gen=3 symbols=143 segments=38 leaves=27 depth=3","log: [check] attached joints 38/38 OK","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [check] gen switch 3 segs=38 leaves=27 -> gen=5 segs=422 leaves=243 progress=0.000 growing=true","log: [lsys] gen=5 symbols=1391 segments=422 leaves=243 depth=5","log: [check] attached joints 422/422 OK","log: [lsys] gen=1 symbols=11 segments=2 leaves=3 depth=1","log: [check] attached joints 2/2 OK","log: [check] gen switch 5 segs=422 leaves=243 -> gen=1 segs=2 leaves=3 progress=0.000 growing=true","log: [check] wind sway at a tip: 4.76px x 2.85px over 600ms OK","log: [check] wind sway at a tip: 8.88px x 0.73px over 600ms OK","log: [check] wind sway at a tip: 4.54px x 2.21px over 600ms OK","log: [check] wind sway at a tip: 4.13px x 2.65px over 600ms OK","log: [check] wind sway at a tip: 8.86px x 0.09px over 600ms OK"],"dom":"🌿 ANIMATED L-SYSTEM TREE\nGENERATION\n1\n2\n3\n4\n5\nRegrow 🌱\npress 1–5 or use buttons · Regrow replants at the current generation","images":"model does not support images"}
{"command":"cd /tmp/job-OA6pBO && echo \"size: $(wc -c < index.html) bytes\" && grep -n \"script src\\|</html>\\|<canvas\" index.html && echsize: 12155 bytes 67: <script src="p5.min.js"></script> 338:</html> --- URLs (should be none) --- exit=0
All checks done. Final file: `/tmp/job-OA6pBO/index.html` (single self-contained page, inline CSS/JS, local `p5.min.js` script tag, zero external resources/URLs). **What I implemented** - L-system: axiom `X`; rules `X → F[+X][-X]FX` (branching bud), `F → FF` (trunk growth); angle 25°. Grammar is expanded to the selected generation, then interpreted with a turtle (push/pop stack) into connected line segments; each `X` marks a leaf bud. - Progressive growth: segments are ordered depth-major (trunk first, then branch layers outward) and revealed over ~4.6s with eased progress; the leading segment grows in length so tips extend smoothly. Once progress reaches 1, growth stops and the tree keeps swaying. - Wind: a continuous displacement field applied per vertex (function of position + time only), so every parent/child joint is displaced identically — branches stay attached while the canopy sways (amplitude grows with height). - Controls: generation buttons 1–5, **Regrow** button (plus keyboard 1–5 / R). Any change rebuilds the grammar at the same generation and restarts growth from 0. - Fit: auto-computed bounding box → scale/translate so every generation (1–5) fits fully in the canvas with margin reserved for sway. Expansion is bounded (gen 5 = 1,391 symbols, 422 segments, 243 leaves). **Verified in-browser (console logs)** - Branch growth: gen 1→5 produce growing symbol/segment/leaf counts (2/3 → 422/243) — the growth progress animation restarts each time (`progress=0.000, growing=true`). - Parent-child connections: connectivity check reports every segment start equals the root or another segment's end — 38/38, 422/422, 2/2 attached joints, all OK. - Generation change: pressed gen 5 (key) and gen 1 (button) — each restarted growth with a different branching structure. - Regrow: clicked the button — growth restarted at the same generation. - Wind: sampled tip displacement after growth — moving ~1–9 px per 600 ms (continuous sway, OK). **Unverified / limitation** - Screenshots aren't supported by this model, so I could not visually eyeball the rendered frames; rendering correctness is inferred from the running p5 draw loop (no console errors) and the geometry/behavior checks above. - Button-coordinate clicks for gens 2 and 4 weren't individually exercised (gen 1 click and gen 5 key proved the same `setGeneration` path).