A Pen by Fox Peterson on CodePen.
Created
March 12, 2019 22:45
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Water world
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<canvas></canvas> | |
<div></div> |
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var canvas,ctx,tim,bai; | |
canvas = document.getElementsByTagName('canvas')[0]; | |
ctx = canvas.getContext('2d'); | |
canvas.width=canvas.height=400; | |
aaa(); | |
function aaa(){ | |
var a,b,c,s,p,r,x,y,z,x1,y1,max,p2,han,h,pt,hei; | |
ctx.globalCompositeOperation = "source-over"; | |
ctx.fillStyle="rgb(0,0,0)"; | |
ctx.fillRect(0,0,canvas.width,canvas.height); | |
ctx.globalCompositeOperation = "lighter"; | |
tim=new Date().getTime()/10; | |
ctx.strokeStyle=ctx.fillStyle="hsla(24,60%,60%,0.3)"; | |
bai=0.6+Math.sin(tim/471)*0.2; | |
hei=0.9+Math.sin(tim/100)*0.3; | |
pt=[]; | |
for(c=0;c<180;c++){ | |
s=(c+1)/180; | |
han=Math.cos(s*Math.PI/2); | |
h=Math.sin(s*Math.PI/2); | |
s=1-s; | |
p=[]; | |
max=(100*han)|0; | |
r=0; | |
for(a=0;a<max;a++){ | |
x=Math.cos(r)*han; | |
y=Math.sin(r)*han; | |
z=nami(r,s); | |
x-=z*s; | |
p.push([x,y,hei+z*s+h]); | |
r+=Math.PI*2/max; | |
} | |
pt.push(p); | |
} | |
for(c=0;c<100;c++){ | |
s=(c+1)/100; | |
p=[]; | |
max=100*s; | |
r=0; | |
for(a=0;a<max;a++){ | |
x=Math.cos(r)*s; | |
y=Math.sin(r)*s; | |
z=nami(r,s); | |
x-=z*s; | |
p.push([x,y,hei+z*s]); | |
r+=Math.PI*2/max; | |
} | |
pt.push(p); | |
} | |
for(c=0;c<pt.length;c++){ | |
p=pt[c]; | |
p2=[]; | |
for(a=0;a<p.length;a++){ | |
x=p[a][0]; | |
y=p[a][1]; | |
z=p[a][2]; | |
b=Math.pow(1.5,y/2); | |
x1=x*b*150+200; | |
y1=z*b*200-hei*200+150; | |
p2.push([x1,y1]); | |
} | |
ctx.beginPath(); | |
for(a=0;a<p2.length;a++)ctx.lineTo(p2[a][0],p2[a][1]); | |
ctx.closePath(); | |
ctx.stroke(); | |
} | |
requestAnimationFrame(aaa); | |
} | |
function nami(r,s){ | |
var a=Math.sin(r*2-tim/13+s*13)/20+ | |
Math.sin(r*5-tim/17+s*13)/20+ | |
Math.sin(r*7-tim/19+s*13)/40; | |
return a*bai; | |
} |
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* { | |
margin: 0; | |
padding: 0; | |
border: 0; | |
background: #000 | |
} | |
canvas { | |
position: relative; top:50%; | |
left:50%; | |
margin-left:-50vmin; | |
width:100vmin; | |
height:100vmin; | |
overflow:hidden; | |
display: block; | |
} |
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