var w = c.width = window.innerWidth, h = c.height = window.innerHeight, ctx = c.getContext('2d'), cen = {x:w/2, y:h/2}, radiant = 0, particles = [], particleCount = 1, frame = 0, middleCover = ctx.createRadialGradient(cen.x, cen.y, 0, cen.x, cen.y, 2…
