Swirly Painting with blur

// Franz Flückiger 2020

// thecescobauer@hotmail.com

​

const bins = 15

const particleCount = 500

const particleLifeTime = 100

let vecField

let counter = 0

let particles = []

let xLambda, yLambda

​

function setup() {

  createCanvas(1920, 1080);

  background(0)

  noStroke();

  // Simplex noise by Jonas Wagner

  // https://github.com/jwagner/simplex-noise.js?files=1

  simplex = new SimplexNoise()

  xLambda = (i,j) => simplex.noise2D((i + j*bins)/bins, counter/100)

  yLambda = (i,j) => simplex.noise2D(counter/-100, (j - i*bins)/-bins)

  vecField = new ParamVectorField(xLambda, yLambda, bins)

  initParticles()

  vecField.update()

  //pixelDensity(3.5)

}

​

function draw() {

  drawFlow()

  let c = get()

  image(c, 0, 0)

}

​

function initParticles() {

  for(let j=0; j<particleCount+1; j++) {

    particles.push(new Particle(bins, particleLifeTime))

  }

}

​

function drawFlow() {

  for(let j=0; j<particleCount; j++) {

    particles[j].move(vecField.u, vecField.v)

    particles[j].show(0, 0, (width+100)/bins)

  }

}

​

function IX(i,j) {

    return i + bins * j

}

​

function mousePressed() {

  setup()

}

​