| <!DOCTYPE html> |
| <html lang="en"> |
| |
| <head> |
| <meta charset="UTF-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| <title>情人节快乐！</title> |
| <style> |
| body { |
| margin: 0; |
| overflow: hidden; |
| } |
| |
| canvas { |
| display: block; |
| } |
| </style> |
| </head> |
| |
| <body> |
| <canvas id="canvas"></canvas> |
| <script> |
| const canvas = document.getElementById('canvas'); |
| const ctx = canvas.getContext('2d'); |
| canvas.width = window.innerWidth; |
| canvas.height = window.innerHeight; |
| |
| |
| class Heart { |
| constructor() { |
| this.x = Math.random() * canvas.width; |
| this.y = Math.random() * -canvas.height; |
| this.size = Math.random() * 10 + 10; |
| this.speed = Math.random() * 2 + 1; |
| } |
| |
| draw() { |
| ctx.beginPath(); |
| const t = Date.now() / 1000; |
| const x = 16 * Math.pow(Math.sin(t), 3); |
| const y = 13 * Math.cos(t) - 5 * Math.cos(2 * t) - 2 * Math.cos(3 * t) - Math.cos(4 * t); |
| const scaledX = this.x + x * this.size; |
| const scaledY = this.y - y * this.size; |
| ctx.moveTo(scaledX, scaledY); |
| ctx.bezierCurveTo(scaledX + this.size, scaledY - this.size, scaledX + 2 * this.size, scaledY + this.size, scaledX, scaledY + 2 * this.size); |
| ctx.bezierCurveTo(scaledX - 2 * this.size, scaledY + this.size, scaledX - this.size, scaledY - this.size, scaledX, scaledY); |
| ctx.fillStyle = 'red'; |
| ctx.fill(); |
| } |
| |
| move() { |
| this.y += this.speed; |
| if (this.y > canvas.height) { |
| this.y = -this.size; |
| this.x = Math.random() * canvas.width; |
| } |
| } |
| } |
| |
| |
| const hearts = []; |
| for (let i = 0; i < 100; i++) { |
| hearts.push(new Heart()); |
| } |
| |
| |
| function animate() { |
| ctx.clearRect(0, 0, canvas.width, canvas.height); |
| hearts.forEach(heart => { |
| heart.draw(); |
| heart.move(); |
| }); |
| requestAnimationFrame(animate); |
| } |
| |
| animate(); |
| |
| |
| canvas.addEventListener('mousemove', (e) => { |
| const mouseX = e.clientX; |
| const mouseY = e.clientY; |
| hearts.forEach(heart => { |
| const dx = mouseX - heart.x; |
| const dy = mouseY - heart.y; |
| const distance = Math.sqrt(dx * dx + dy * dy); |
| if (distance < 100) { |
| const angle = Math.atan2(dy, dx); |
| heart.x -= Math.cos(angle) * 2; |
| heart.y -= Math.sin(angle) * 2; |
| } |
| }); |
| }); |
| </script> |
| </body> |
| |
| </html> |
