js绘制一个canvas雪花形状动画旋转效果代码
代码语言:html
所属分类:动画
代码描述:js绘制一个canvas雪花形状动画旋转效果代码
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"> <style> * { margin: 0; overflow: hidden; background-color: #000; } canvas { display: block; margin: 0 auto; margin: calc(50vh - 250px) auto; }</style> </head> <body> <canvas id='c'></canvas> <script> var c = document.getElementById("c"); var ctx = c.getContext("2d"); var cw = c.width = 500; var ch = c.height = 500; var cx = cw / 2, cy = ch / 2; var rad = Math.PI / 180; var frames = 0; ctx.lineWidth = 1; ctx.strokeStyle = "hsla(210,90%,50%,.5)"; ctx.shadowBlur = 15; ctx.shadowOffsetX = 1; ctx.shadowOffsetY = 1; ctx.shadowColor = "hsla(210,90%,50%,1)"; var I = 25; var a = 6 * I; var b = 1 * I; var h = 0; var r.........完整代码请登录后点击上方下载按钮下载查看
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