canvas实现文字变成沙粒交互动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：canvas实现文字变成沙粒交互动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  

  <link href="https://fonts.googleapis.com/css?family=Medula+One" rel="stylesheet">
  
  
  
<style>
body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    overflow: hidden;
}

.container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

h1 {
    font-size: 8rem;
    text-align: center;
    color: #333;
    text-transform: uppercase;
    position: absolute;
    z-index: 0;
    transition: opacity 0.5s ease;
    font-weight: 900;
    padding: 1.5rem 0;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hidden {
    opacity: 0;
}
</style>


  
  
</head>

<body>
    <div class="container">
        <h1 id="text">BFW.WIKI</h1>
        <canvas id="canvas"></canvas>
    </div>

      <script  >
document.addEventListener('DOMContentLoaded', () => {
  // Get elements
  const text = document.getElementById('text');
  const canvas = document.getElementById('canvas');
  const ctx = canvas.getContext('2d', { alpha: true });

  // Set canvas dimensions
  canvas.width = window.innerWidth;
  canvas.height = window.innerHeight;

  // Configuration options
  const config = {
    particleDensity: 3, // Lower = more particles
    particleSizeMultiplier: 1 / 20, // Adjust particle size relative to font
    gravity: 0.15,
    friction: 0.95,
    bounce: 0.6,
    returnSpeed: 0.05,
    colorVariation: 15, // Random color variation
    initialCycleDelay: 2000, // Initial delay before animation starts
    fallingDuration: 5000, // How long particles fall
    returnDuration: 800, // How long particles return
    restDuration: 2000, // Rest time between cycles
    canInteract: true, // Allow interaction with the mouse
    interactiveForce: 5, // Force applied by mouse interaction
    interactiveRadius: 100 // Radius of mouse interaction
  };

  // Mouse position tracking
  let mouse = {
    x: undefined,
    y: undefined,
    isPressed: false };


  // Track mouse movement
  canvas.addEventListener('mousemove', event => {
    mouse.x = event.x;
    mouse.y = event.y;
  });

  // Track mouse press
  canvas.addEventListener('mousedown', () => {
    mouse.isPressed = true;
  });

  canvas.addEventListener('mouseup', () => {
    mouse.isPressed = false;
  });

  // Touch support
  canvas.addEventListener('touchmove', event => {
    event.preventDefault();
    mouse.x = event.touches[0].clientX;
    mouse.y = event.touches[0].clientY;
    mouse.isPressed = true;
  });

  canvas.addEventListener('touchend', () => {
    mouse.isPressed = false;
  });

  // Resize canvas on window resize with debounce
  let resizeTimeout;
  window.addEventListener('resize', () => {
    clearTimeout(resizeTimeout);
    resizeTimeout = setTimeout(() => {
      canvas.width = window.innerWidth;
      canvas.height = window.innerHeight;

      // Recreate particles on resize if they exist
      if (particles.length > 0) {
        particles = createParticles();
      }
    }, 250);
  });

  // Particle class
  class Particle {
    constructor(x, y, color, size) {
      this.x = x;
      this.y = y;
      this.originalX = x;
      this.originalY = y;
      this.baseColor = color;
      this.color = this.addColorVariation(color);
      this.size = size;
      this.baseSize = size;
      this.velocity = {
        x: (Math.random() - 0.5) * 2,
        y: Math.random() * -2 };

      this.gravity = config.gravity * (0.8 + Math.random() * 0.4); // Slight variation in gravity
      this.friction = config.friction;
      this.active = false;
      this.activeDelay = Math.random() * 500; // Random delay for each particle
      this.returning = false;
      this.returnSpeed = config.returnSpeed * (0.8 + Math.random() * 0.4); // Variation in return speed
      this.opacity = 1;
      this.fadeSpeed = 0.02;
    }

    // Add slight color variation to particles
    addColorVariation(color) {
      const rgbMatch = color.match(.........完整代码请登录后点击上方下载按钮下载查看