index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
padding: 0;
margin: 0;
}
</style>
</head>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.5/p5.min.js"></script>
<script>
function setup() {
createCanvas(windowWidth, windowHeight);
}
function windowResized() {
resizeCanvas(windowWidth, windowHeight);
}
function wave(offset) {
var t = millis() / 1000;
var cx = width / 2;
var cy = height / 2;
var radius = min(width, height) * 0.4;
beginShape();
for (var i = 0; i <= 360; i++) {
var a = radians(i);
var amplitude = pow((1 + cos(a - t)) / 2, 3);
var r = radius + cos(a * 8 - offset + t) * amplitude * 32;
var x = cx + cos(a) * r;
var y = cy + sin(a) * r;
vertex(x, y);
}
endShape();
}
function draw() {
blendMode(BLEND);
background(0);
blendMode(ADD);
noFill();
strokeWeight(min(width, height) * 0.02);
strokeJoin(ROUND);
stroke(255, 0, 0);
wave(0);
stroke(0, 255, 0);
wave(PI / 2);
stroke(0, 0, 255);
wave(PI / 1);
}
</script>
</body>
</html>