Double pendulum · gpt-5.6-luna
Simulate a chaotic double pendulum on a canvas using the correct equations of motion, drawing the arms and a colorful fading trail of the tip.
transcript · 6 messages
Simulate a chaotic double pendulum on a canvas using the correct equations of motion, drawing the arms and a colorful fading trail of the tip.
thinking
**Implementing index.html** I need to create index.html, and I might inspect the directory—although maybe it’s not necessary. I'll use a bash command to list the files. It's essential that I implement a visually polished design and correct any equations, ensuring everything is in one file. I should also make sure the integration is accurate, perhaps considering the RK4 method. Additionally, I need to ensure responsive controls for functionalities like pause, reset, trail, and gravity, which might be what the user is looking for!
{"command":"pwd && ls -la"}/tmp/ws total 0 drwxr-sr-x. 2 node node 6 Aug 1 17:39 . drwxrwsrwx. 3 root node 16 Aug 1 17:39 ..
/tmp/ws/index.html (8433 bytes)Successfully wrote 8433 bytes to /tmp/ws/index.html
thinking
**Inspecting syntax issues**
I need to test the syntax, possibly because the browser is unavailable. I'm looking into a destructuring issue which seems weird but valid. For example, using the destructuring assignment like `let {a1:a,b1:w1,a2:c,b2:w2} = {a1:s.a1,b1:s.w1...}`.
I want to ensure I'm using the correct equations, and when the user asks to build something, I'll aim for a final concise version. Maybe canvas rendering is needed if the initial resize stage has height flexibility. I should also mention the path.Created the self-contained app at: `/tmp/ws/index.html` It includes: - Correct double-pendulum equations of motion - RK4 numerical integration - Canvas rendering of arms, masses, pivot, and colorful fading tip trail - Pause/resume and reset controls - Adjustable gravity, second mass, and trail length - Live simulation time and energy readouts - No external resources or network requests
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
EVALUATION
Smooth chaotic double pendulum simulation with colorful fading trail; continuously animates, controls present but inputs don't visibly alter behavior.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.