var xoff, yoff;
var time;
var colors = [];
function setup() {
createCanvas(windowWidth,
windowHeight);
background(13, 38, 20);
noFill()
colors.push(color(10, 20, 100, 80))
colors.push(color(20, 160, 120, 128));
colors.push(color(20, 60, 200, 128));
colors.push(color(20, 55, 90, 128));
colors.push(color(20, 60, 180, 128));
colors.push(color(23, 5, 55, 128));
xoff = 0.0;
yoff = 0.0;
time = 0;
}9
function draw() {
var c = getColor(time);
stroke(c);
beginShape();
var xoff = 0;
for (var x = 0; x <= windowWidth; x += 5) {
var y = map(noise(xoff, yoff), 0, 1, 0, windowHeight);
curveVertex(x, y);
xoff += 0.03;
}
yoff += 0.002;
curveVertex(windowWidth,
windowHeight);
endShape();
time = time + 0.01;
if (time > 1.0) {
time = 0;
}
}
function getColor(t) {
var p = t * (colors.length - 1);
var from = floor(p);
return lerpColor(colors[from], colors[from + 1], p - from);
}