Noisy Circle

let resolution = 260; // how many points in the circle

let rad;

​

let t = 0; // time passed

let tChange = 0.01; // how quick time flies

​

let nVal; // noise value

let nInt = 1; // noise intensity

let nAmp = 1; // noise amplitude

​

let pollen = [];

let pollenCounter = 0;

​

function pollenValues ()

{

    pollen.push([]);

    pollen[pollenCounter].push(windowWidth - 300); // x position

    pollen[pollenCounter].push(random(100, windowHeight - 100)); // y position

    pollen[pollenCounter].push(random(50, 200)); // radius

    pollen[pollenCounter].push(random(0.1, 10)); // nInt

    pollen[pollenCounter].push(random(0, 0.8)); // nAmp

    pollen[pollenCounter].push(color(random(0, 360), 36, 87)); //color  

    pollenCounter++;

}

​

  function pollenPath()

  {

    chance = round(random(0, 10));

    if (chance == 0)

    {

      pollenValues();

    }

    for (let i = 0; i < pollenCounter; i++)

    {

      noStroke();

      fill(pollen[i][5]);

​

      nInt = pollen[i][3];

      nAmp = pollen[i][4];

​

      beginShape();

      for (let a=0; a<= TWO_PI; a+=TWO_PI/resolution) 

      {

        nVal = map(noise( cos(a)*nInt+1, sin(a)*nInt+1, t ), 0.0, 1, nAmp, 1); // map noise value to match the amplitude

        rad = pollen[i][2];

        x = (cos(a)*rad *nVal) + pollen[i][0];

        y = (sin(a)*rad *nVal) + pollen[i][1];

​

        vertex(x, y);

      }

      endShape(CLOSE);

​

      t += tChange;

      pollen[i][0] = pollen[i][0] - 10;

      if (pollen[i][0] < -1000)

      {

        pollen.splice(i, 1);

        pollenCounter--;

      }

    }

  }

​

​

​

​

function setup() 

{

  createCanvas(windowWidth, windowHeight);

  noiseDetail(8);

}

​

function draw() 

{

  background(255);

  pollenPath();

}