html破碎效果,HTML5 canvas绘图制作打击视频玻璃破碎动画效果代码
时间: 2024-01-11 13:02:01 浏览: 156
html5基于canvas实现的打碎图片玻璃碎片特效源码.zip
以下是HTML5 canvas绘图制作打击视频玻璃破碎动画效果的代码:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Video Glass Smash Effect</title>
<style>
body {
margin: 0;
padding: 0;
background-color: #000;
}
#canvas {
display: block;
margin: 0 auto;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
// load video
var video = document.createElement('video');
video.src = 'video.mp4';
// set canvas size
var width = canvas.width = 640;
var height = canvas.height = 360;
// create image data arrays
var imageData = ctx.createImageData(width, height);
var originalData = ctx.createImageData(width, height);
var copyData = ctx.createImageData(width, height);
// draw video to canvas
video.addEventListener('play', function() {
setInterval(function() {
ctx.drawImage(video, 0, 0, width, height);
// save original image data
originalData.data.set(ctx.getImageData(0, 0, width, height).data);
// copy image data
copyData.data.set(originalData.data);
// draw shattered glass effect
for (var y = 0; y < height; y += 2) {
for (var x = 0; x < width; x += 2) {
var dx = x + Math.sin(y / 10) * 10;
var dy = y + Math.cos(x / 10) * 10;
var index = (dy * width + dx) * 4;
var copyIndex = (y * width + x) * 4;
imageData.data[copyIndex] = copyData.data[index];
imageData.data[copyIndex + 1] = copyData.data[index + 1];
imageData.data[copyIndex + 2] = copyData.data[index + 2];
imageData.data[copyIndex + 3] = 255;
}
}
ctx.putImageData(imageData, 0, 0);
}, 30);
}, false);
// play video
video.play();
</script>
</body>
</html>
```
该代码使用`canvas`绘制视频,并在画布上创建了一个破碎的玻璃效果。它通过每个像素的颜色值进行操作,创建一个类似于打碎玻璃的效果。
阅读全文