reflect - OpenProcessing

mySketch
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//Code by Aaron Reuland
​
let colors = ["#ea9751", "#fd8637", "#d3661c", "#b8593f", "#e61111", "#4a727a", "#086253", "#2e201f"]
let lights = []
let simplex
let finished = []
​
function setup() {
  createCanvas(windowWidth, windowHeight);
  simplex = new openSimplexNoise(Date.now())
  background("#131611");
  noFill()
  stroke(255, 75)
  strokeWeight(0.1)
  for (let yer = 0; yer < height * 0.7; yer++) {
    beginShape()
    for (let x = -width / 50; x < width + width / 50; x++) {
      let yoff = simplex.noise2D(yer / 20, x / 100) * (yer / 50)
      let xoff = simplex.noise2D(yer / 100, x / 100) * (width / 40)
      vertex(x + xoff, height * 0.4 + yer + yoff)
    }
    endShape()
  }
​
  blendMode(DODGE)
  noStroke()
  for (let x = 0; x < width; x += 2) {
    let bh = randomGaussian(0, height / 10)
    let xoff = random(-3, 3)
    lights.push(new light(x + xoff, bh, 0))
    lights.push(new light(x + xoff, bh, 1))
  }
}
​
function draw() {
  for (let l of lights) {
    l.raise();
    l.rite();
    l.risen();
  }
  if (frameCount < 100) {
    push()
    blendMode(BLEND)
    fill(0, 1)
    rect(0, height * 0.4, width, height * 0.6)
    pop()
  }
}
​
class light {
  constructor(x, baseH, type) {
    this.x = x
    this.h = height * 0.4
    this.type = type
    this.baseH = baseH
    if (this.type == 0) {
      this.targetH = (height * 0.4) + abs(this.baseH) * -1
    } else {
      this.targetH = (height * 0.4) + abs(this.baseH) * 1.4
    }
    this.color = color(colorMixer(this.x, colors))
​
    this.color.setAlpha(25)
​
    this.frames = abs(this.targetH - height * 0.4)
    this.currentFrame = 0
​
  }
​
  raise() {
    if (this.currentFrame < this.frames) {
      let framesMap = map(this.currentFrame, 0, this.frames, 0, 1);
      this.h = lerp(height * 0.4, this.targetH, easeOutQuart(framesMap))
    }
    this.currentFrame++
  }
​
  rite() {
    let s = map(abs(this.h - height * 0.4), 0, height * 0.4, 4, 30)
    fill(this.color)
    if (this.type == 0) {
      ellipse(this.x, this.h, s)
    } else {
      let xoff = simplex.noise2D(this.h / 10, this.x / 70) * (this.h / 50)
      let yoff = simplex.noise2D(this.h / 5, this.x / 200) * this.h / 100
      ellipse(this.x + xoff, this.h + yoff, s)
    }
  }
​
  risen() {
    if (this.currentFrame > this.frames) {
      let index = lights.indexOf(this)
      lights.splice(index, 1)
    }
​
  }
​
}
​
function easeOutQuart(x) {
  return 1 - Math.pow(1 - x, 4);
}
​
​
function colorMixer(x, colorArray) {
​
  let c = noise(x) * colorArray.length
  let c1 = floor(c)
  let c2 = floor(c + 1) % colorArray.length
  let color1 = colorArray[c1]
  let color2 = colorArray[c2]
  let mix = fract(c)
  let coloring = spectral.mix(color1, color2, mix)
  return coloring
}