Double pendulum · grok-4.6
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 · 4 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
The user wants me to create a single-page web app that simulates a chaotic double pendulum. Let me build a complete, self-contained index.html with:
I'll build a self-contained double-pendulum simulation with correct Lagrangian dynamics, RK4 integration, and a fading color trail.
/tmp/ws/index.html (14488 bytes)Successfully wrote 14488 bytes to /tmp/ws/index.html
thinking
The file was written successfully. The user asked for a single-page web app simulating a chaotic double pendulum. I've created a complete self-contained index.html with:
`index.html` is a self-contained double pendulum: - **Dynamics** — Lagrangian EOM with angles from the downward vertical, integrated with RK4 at 240 Hz - **Visuals** — rods, mass-scaled bobs, and a hue-shifting fading trail of the outer tip - **Controls** — sliders for θ₁/θ₂, lengths, masses, g, and damping; drag the bobs; Pause / Reset / Perturb / Clear trail Open `index.html` in a browser to run it (no network needed).
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
Double pendulum with colorful fading trails animates smoothly; drag sets angles, space pauses, controls work well.
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.