Bouncing balls in a heptagon · glm-4.7
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: 1. A heptagon (7-sided polygon) that spins 360 degrees every 5 seconds 2. 20 numbered balls (1-20) that drop from the center 3. Balls affected by gravity and friction 4. Ball-to-ball collisions 5. Ball-to-wall collisions with the rotating heptagon 6. Ball spin shown by rotating the number on each ball 7. All collision detection implemented manually This is a physics simulation that I need to implement from scratch. Let me plan this out: 1. Set up HTML5 Canvas for rendering 2. Create the heptagon that rotates 3. Create 20 balls with position, velocity, angular velocity, radius 4. Implement gravity 5. Implement friction 6. Implement ball-ball collision detection and response 7. Implement ball-wall collision detection and response with the rotating heptagon 8. Render everything with the numbers rotating on the balls Let me write this as a single index.html file with inline CSS and JavaScript.
I'll create a physics simulation with a rotating heptagon and 20 numbered balls. Let me build this step by step.
/workspace/index.html (14795 bytes)Successfully wrote 14795 bytes to /workspace/index.html
thinking
I've created the single-page web app with all the requested features: 1. A heptagon (7-sided polygon) that spins 360 degrees every 5 seconds 2. 20 numbered balls (1-20) that drop from near the center 3. Balls are affected by gravity and friction 4. Ball-to-ball collision detection and response 5. Ball-to-wall collision detection and response with the rotating heptagon 6. Ball spin shown by rotating the number on each ball 7. All collision detection implemented manually from scratch The simulation includes: - Gravity pulling balls downward - Friction slowing down balls over time - Realistic bouncing off the rotating walls with proper physics - Ball spin visualization through rotating numbers - Color-coded balls based on their number - Proper separation of overlapping balls to prevent sticking - Angular velocity transfer during collisions The code is self-contained in a single HTML file with inline CSS and JavaScript, no external dependencies.
I've created a complete physics simulation with a rotating heptagon and 20 bouncing balls. Here's what's included: **Features:** - **Rotating Heptagon**: A 7-sided polygon that spins 360° every 5 seconds continuously - **20 Numbered Balls**: Each ball displays its number (1-20) with a unique color based on HSL values - **Gravity**: Balls naturally fall downward - **Friction**: Both linear and angular friction slow down movement over time - **Ball-to-Ball Collisions**: Custom collision detection with realistic elastic response and spin transfer - **Ball-to-Wall Collisions**: Balls bounce off the rotating heptagon walls, accounting for the wall's rotational velocity at the collision point - **Ball Spin**: Each ball's number rotates to show its angular momentum, which changes during collisions **Physics Implementation:** - Custom point-to-line-segment distance calculations for wall collisions - Ray-casting algorithm to detect if balls are inside the heptagon - Proper impulse-based collision resolution - Tangential velocity transfer creates realistic spin during collisions - Wall rotation velocity is calculated and applied to ball bounces for realistic behavior The simulation runs entirely in the browser with no external dependencies 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
Heptagon rotates with 20 numbered balls falling under gravity and settling near a wall, but no visible reaction to any input.
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.