原生js实现canvas下雨动画效果代码
代码语言:html
所属分类:粒子
代码描述:原生js实现canvas下雨动画效果代码
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> <head> <meta charset="utf-8"> <title>Canvas下雨</title> <style> body { background: #0c0c0c; } </style> </head> <body> <script> (function (window, document) { var Vector2 = (function () { function Vector2(x, y) { this.x = x || 0; this.y = y || 0; } return Vector2; })(); Vector2.prototype.add = function (addend) { this.x += addend.x; this.y += addend.y; }; var RainDrop = (function () { function RainDrop(parent) { this.size = 2; this.parent = parent; this.init(); } return RainDrop; })(); RainDrop.prototype.init = function () { this.life = 0; this.ttl = Math.random() * 500 + 300; this.positio.........完整代码请登录后点击上方下载按钮下载查看
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