ad-password-self-service/static/js/bubbly-bg.js

"use strict";window.bubbly=function(t){var n=t||{},o=function(){return Math.random()},r=n.canvas||document.createElement("canvas"),e=r.width,a=r.height;null===r.parentNode&&(r.setAttribute("style","position:fixed;z-index:-1;left:0;top:0;min-width:100vw;min-height:100vh;"),e=r.width=window.innerWidth,a=r.height=window.innerHeight,document.body.appendChild(r));var i=r.getContext("2d");i.shadowColor=n.shadowColor||"#fff",i.shadowBlur=n.blur||4;var l=i.createLinearGradient(0,0,e,a);l.addColorStop(0,n.colorStart||"#2AE"),l.addColorStop(1,n.colorStop||"#17B");for(var c=n.bubbles||Math.floor(.02*(e+a)),u=[],d=0;d<c;d++)u.push({f:(n.bubbleFunc||function(){return"hsla(0, 0%, 100%, "+.1*o()+")"}).call(),x:o()*e,y:o()*a,r:(n.radiusFunc||function(){return 4+o()*e/25}).call(),a:(n.angleFunc||function(){return o()*Math.PI*2}).call(),v:(n.velocityFunc||function(){return.1+.5*o()}).call()});!function t(){if(null===r.parentNode)return cancelAnimationFrame(t);!1!==n.animate&&requestAnimationFrame(t),i.globalCompositeOperation="source-over",i.fillStyle=l,i.fillRect(0,0,e,a),i.globalCompositeOperation=n.compose||"lighter",u.forEach(function(t){i.beginPath(),i.arc(t.x,t.y,t.r,0,2*Math.PI),i.fillStyle=t.f,i.fill(),t.x+=Math.cos(t.a)*t.v,t.y+=Math.sin(t.a)*t.v,t.x-t.r>e&&(t.x=-t.r),t.x+t.r<0&&(t.x=e+t.r),t.y-t.r>a&&(t.y=-t.r),t.y+t.r<0&&(t.y=a+t.r)})}()};