201107-a

let c = 0;

let spc = 0.1;

let ror;

​

function setup() {

  createCanvas(w=windowWidth, h=windowHeight);

  colorMode(HSB, 360, 100, 100, 100)

  ror = min(w,h) / 3.2;

}

​

function draw() {

  translate(w/2, h/2);

  rotate(c * 0.04)

  blendMode(BLEND);

  background(0,0,20);

  blendMode(ADD);

  c++;

  for(i=0;i<30;i++) {

    //rotate(c * 0.00001)

    let theta = c * spc *(1 + noise(i) * i/(i+100));  

    let x1 =  ror * cos(theta) * sin(theta) + ror * 0.5 * noise(i);

    let y1 =  ror * sin(theta)  + ror * 0.5 * noise(i) ;

    drawingContext.shadowBlur = ror * 0.5;

    drawingContext.shadowColor = color(((i + c) * 0.9) % 360, 100, 100);

    stroke(((i + c) * random(0.2)) % 360, 100, 100);

    strokeWeight(ror * 0.5 * noise(i + c * 0.2));

    point(x1/2, y1/2);

    circle(x1,y1,10);

  }

}