Ruleta de decisiones

1,498 0 sergioarmijo30 Seguir

Remix Abrir en el editor Pantalla completa Comentar Publica tu código

Recomendado

18 September 2025

Fragmento HTML de animación de ventana CSS

25 February 2026

Generador de códigos QR HTML, JavaScript

27 September 2024

Latidos del corazón

HTML

CSS

const canvas = document.getElementById('wheel');
const ctx = canvas.getContext('2d');
const spinBtn = document.getElementById('spin');
const generateBtn = document.getElementById('generate');
const numSegmentsInput = document.getElementById('numSegments');
const result = document.getElementById('result');

let segments = [];
let colors = [];
let startAngle = 0;
let arc = 0;
let spinAngle = 0;
let spinning = false;

function drawWheel() {
  const numSegments = segments.length;
  arc = (2 * Math.PI) / numSegments;

ctx.clearRect(0, 0, canvas.width, canvas.height);

for (let i = 0; i < numSegments; i++) {
    const angle = startAngle + i * arc;
    ctx.beginPath();
    ctx.moveTo(250, 250);
    ctx.arc(250, 250, 250, angle, angle + arc);
    ctx.fillStyle = colors[i];
    ctx.fill();
    ctx.save();

ctx.translate(250, 250);
    ctx.rotate(angle + arc / 2);
    ctx.textAlign = "right";
    ctx.fillStyle = "#000";
    ctx.font = "bold 20px Arial";
    ctx.fillText(segments[i], 230, 10);
    ctx.restore();
  }
}

function spinWheel() {
  if (spinning) return;
  spinning = true;
  result.textContent = '';

const spins = Math.floor(Math.random() * 5 + 5); // vueltas enteras
  const finalAngle = Math.random() * 2 * Math.PI;  // ángulo extra
  const totalRotation = spins * 2 * Math.PI + finalAngle;

const duration = 4000; // duración en ms
  const start = performance.now();

function animate(time) {
    const elapsed = time - start;
    const progress = Math.min(elapsed / duration, 1);
    // Ease-out con función cúbica
    const easedProgress = 1 - Math.pow(1 - progress, 3);
    startAngle = totalRotation * easedProgress;

drawWheel();

if (progress < 1) {
      requestAnimationFrame(animate);
    } else {
      spinning = false;
      const degrees = (startAngle * 180) / Math.PI + 90;
      const arcd = (arc * 180) / Math.PI;
      const index = Math.floor((360 - (degrees % 360)) / arcd) % segments.length;
      result.textContent = `¡Ganaste: ${segments[index]}!`;
    }
  }

requestAnimationFrame(animate);
}

generateBtn.addEventListener('click', generateWheel);
spinBtn.addEventListener('click', spinWheel);

generateWheel();

Comments 0

…