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Reaction-diffusion · gpt-6.1-sol

Output generated Cost / run $0.1480 Runtime 173.4s

Prompt for this run

Run a Gray-Scott reaction-diffusion simulation on a canvas that grows organic Turing patterns in real time, with the mouse seeding new growth.

⛨ sandboxed Open in new tab ↗

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

modelgpt-6.1-sol
vendorOpenAI
harnesspi 0.87.1 · browser iteration
generated2026-10-05

METRICS

runtime173.4s
tokens in162k
tokens out8.1k
cached141k
cost / run$0.1480
Transcript · 27 messages
system

user

Run a Gray-Scott reaction-diffusion simulation on a canvas that grows organic Turing patterns in real time, with the mouse seeding new growth.

assistant
→ bash {"command":"ls -la","timeout":10}
toolResult

total 12 drwx------ 3 node node 4096 Oct 5 00:40 . drwxrwxrwt 6 root root 4096 Oct 5 00:40 .. drwxr-xr-x 3 node node 4096 Oct 5 00:40 .home

assistant
thinking
**Designing a unique UI**

I'm envisioning a dark, scientifically polished UI with dark green and acid lime contrasts. I want to include canvas patterns in muted teal and glowing pale yellow lime on dark green. I need to implement the Gray-Scott model with boundaries and randomized circles for the initial setup, using a prewarm step of 500 to 1500 for optimal growth. I’ll ensure rendering is visually appealing with a color map, keeping dark gradients and noise in mind for an intriguing design.**Creating an interactive canvas**

I'm aiming for an interactive canvas that automatically moves the pointer for seed planting. Users shouldn't need to drag; instead, there could be instructions like "Move to plant · hold to grow," while the pointer moves inside the canvas. I want to incorporate a CSS cursor ring and overlay instructions. The canvas will render smoothly at a low resolution, using dimensions around 660x440. Also, I'll create presets like "Coral," "Mitosis," and "Maze" along with small handmade SVG icons for selection. I need to ensure parameter resets are handled correctly while preserving settings.

I’ll build a live simulation with mouse-driven seeding, pattern presets, and controls for the reaction rates and color palette.

→ write index.html (18446 bytes)
toolResult

Successfully wrote to index.html

assistant
→ browser {"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM LIVE\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0367\n0.010\n0.080\nKill rate / K\n0.0649\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nPause simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n1 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
thinking
**Optimizing layout dimensions**

I’m noticing some layout issues with the panel overflowing at the bottom, getting close to the footer. The current sidebar size is around 660, and I need to shrink it to about 510 to fit everything nicely. I’ll simplify margins and padding, adjusting various elements like the panel sections and controls to keep everything in check. Additionally, the coral patterns need some tweaking to maintain standards while ensuring they fit well visually. The overall font also looks intentionally tiny, which adds a unique touch.
→ browser {"action":"click","x":966,"y":321,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM LIVE\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n03 — MAZE\nMove to seed · hold to grow\nmaze field regenerated\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0290\n0.010\n0.080\nKill rate / K\n0.0570\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nPause simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n8 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
thinking
→ edit {"path":"index.html","edits":[{"oldText":"</style>","newText":".panel{padding:18px}.panel .divider{margin:13px 0}.panel .section-title{margi
toolResult

Successfully replaced 6 block(s) in index.html.

assistant
→ browser {"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM LIVE\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nPause simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n1 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
thinking
**Evaluating height mismatch**

I see that there’s a mismatch between panel 546 and stage 512, which is causing some confusion. I need to check if the stage height, calculated as 100vh - 254px, matches the required height of 546 for both the panel and the footer. Right now, the footer sits around 780. I’ll ensure the stage height is set correctly so it aligns with the panel, keeping everything visually cohesive.
→ browser {"action":"click","x":1032,"y":704,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM PAUSED\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nResume simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n60 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
thinking
**Evaluating adjustments for stage height**

I’m thinking about how to set the stage height. I believe 60 fps is good, and I want to extend the stage with an align-self stretch for height. Using height: calc(100vh - 254px) causes some issues because it doesn't match on smaller screens. I think a better approach is to set the height as auto with a min-height of max(498px, calc(100vh - 254px). Lastly, I need to test the seed palette and resume.
→ edit {"path":"index.html","edits":[{"oldText":"height:calc(100vh - 288px)","newText":"height:calc(100vh - 254px)"},{"oldText":"let count=0,last=p
toolResult

Successfully replaced 3 block(s) in index.html.

assistant
→ browser {"action":"click","x":762,"y":671,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM PAUSED\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nField cleared. Move your mouse to seed new life.\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nResume simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n60 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
→ browser {"action":"drag","x":310,"y":400,"toX":550,"toY":460,"text":"","delta":0}
toolResult

Frame 1, +1ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM PAUSED\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nField cleared. Move your mouse to seed new life.\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nResume simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n60 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
→ browser {"action":"click","x":1101,"y":647,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM PAUSED\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nField cleared. Move your mouse to seed new life.\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nResume simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n60 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant
thinking
→ browser {"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing."],"dom":"MORPH\n/ LAB\nAN INTERACTIVE STUDY OF EMERGENCE\nSYSTEM LIVE\nEXPERIMENT 001 / GRAY–SCOTT\nOrder, out of almost nothing.\n\nTwo chemicals. A few simple rules.\nAn endless world of organic possibility.\n\nREACTION / DIFFUSION FIELD\n01 — CORAL\nMove to seed · hold to grow\nPATTERN LIBRARY\n04 TYPES\nCoral\nMitosis\nMaze\nSolitons\nREACTION PARAMETERS\nFeed rate / F\n0.0545\n0.010\n0.080\nKill rate / K\n0.0620\n0.040\n0.075\nSIMULATION\nEvolution speed\n1×\nSeed radius\n12 px\nColor palette\nPause simulation\n≈\n\nNature doesn't need a blueprint.\nPatterns emerge as an activator and inhibitor react and diffuse.\n\n320 × 220 GRID\n60 FPS\nDu 1.0 / Dv 0.5","images":"attached"}

assistant

Created **index.html** — a self-contained, offline Gray–Scott simulation. - Move the mouse to seed growth; hold to keep seeding. - Explore four pattern presets and three color palettes. - Adjust reaction rates, evolution speed, and brush radius. - Pause, clear, regenerate, or save a PNG snapshot. Tested the simulation and key interactions in the browser.