Bouncing balls in a heptagon · qwen3.5-397b-a17b
Show 20 numbered balls (1 to 20) dropping from the center of a heptagon that spins 360 degrees every 5 seconds. The balls are affected by gravity and friction, collide with each other, and bounce realistically off the rotating walls; show each ball's spin via the rotation of its number. Implement all collision detection yourself.
transcript · 4 messages
Show 20 numbered balls (1 to 20) dropping from the center of a heptagon that spins 360 degrees every 5 seconds. The balls are affected by gravity and friction, collide with each other, and bounce realistically off the rotating walls; show each ball's spin via the rotation of its number. Implement all collision detection yourself.
thinking
The user wants me to create a single-page web app with a physics simulation featuring: 1. A spinning heptagon (7-sided polygon) that rotates 360 degrees every 5 seconds 2. 20 numbered balls (1-20) dropping from the center 3. Physics: gravity, friction, ball-to-ball collisions, ball-to-wall collisions 4. Balls should show their spin via rotation of the number 5. All collision detection must be implemented from scratch 6. Everything in one self-contained index.html file Let me create this step by step: 1. HTML structure with a canvas element 2. CSS for styling 3. JavaScript for: - Canvas setup - Heptagon definition and rotation - Ball class with physics properties - Gravity and friction - Ball-to-ball collision detection and response - Ball-to-wall (heptagon edge) collision detection and response - Spin visualization for balls - Animation loop Let me write this comprehensive physics simulation.
/tmp/ws/index.html (16551 bytes)Successfully wrote 16551 bytes to /tmp/ws/index.html
thinking
The file has been created successfully. Let me verify it exists and provide a summary of what was implemented.
Created `index.html` with a complete physics simulation featuring: **Features:** - **Spinning Heptagon**: 7-sided polygon rotating 360° every 5 seconds with glowing blue edges - **20 Numbered Balls**: Each with unique colors (HSL rainbow), numbered 1-20 - **Gravity**: Constant downward acceleration - **Friction**: Velocity damping over time - **Ball-to-Ball Collisions**: Elastic collision response with momentum transfer - **Ball-to-Wall Collisions**: Detection against rotating heptagon edges with proper normal calculation - **Spin Visualization**: Numbers rotate with each ball, angular velocity affected by collisions and wall friction - **Wall Velocity Transfer**: Balls gain/lose momentum from the rotating walls **Physics Implementation:** - Custom point-to-line-segment distance calculation - Ray casting algorithm for point-in-polygon testing - Impulse-based collision response - Tangential velocity transfer for spin - Containment enforcement to keep balls inside the heptagon Open `index.html` in a browser to see the simulation.
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
Numbered balls bounce and settle inside a spinning heptagon with gravity and collisions, but input has no visible effect.
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.