The Spin the Wheel tool randomly selects an option from a customizable list using an interactive physics simulation rendered on HTML5 canvas.

### Wheel Geometry & Rotational Physics The interactive picker models realistic mechanical wheel dynamics: - Angular Slice Partitioning: Evenly divides the circular wheel face into $N$ wedges: $$\theta_{\text{slice}} = \frac{2\pi}{N}$$ - Rotational Impulse & Friction Deceleration: Clicking spin applies an initial angular velocity, propelling the wheel through multiple rotations. Frame-by-frame friction deceleration slows the wheel smoothly over several seconds. - Winner Detection at Rest: When rotation ceases, the index of the slice aligned beneath the fixed top indicator pointer (at angle $\frac{3\pi}{2}$ radians) is identified as the winner. - Winner History Tracking: Winning outcomes are saved to a session history log to track previous results during raffles or team selections.

### Practical Usage Example Suppose a team enters 6 lunch choices: "Pizza", "Tacos", "Sushi", "Burgers", "Salad", and "Pasta": 1. Each wedge occupies $360^\circ / 6 = 60^\circ$ with a distinct color. 2. Clicking **Spin the Wheel** animates the wheel spinning through multiple rapid revolutions. 3. The wheel decelerates smoothly and stops on "Sushi". 4. The winning selection is announced on screen and logged into the winner history.

### Zero-Server Privacy Guarantee All list configurations, random selections, and canvas animations execute locally on your device. No entries or outcomes are stored on remote servers.