紫陽花

function setup() {

  createCanvas(600, 600);

  translate(width/2, height/2);

  noFill();

  background(230);

  for(i=0; i<1000; i++){

    let x = random(-width/2, width/2);

    let y = random(-height/2, height/2);

    let radius = dist(0, 0, x, y);

    let r = random()

    if(radius >100){

    strokeWeight(20/radius);

    stroke(39,130,230);

    circle(x, y, radius);

    }else{

      strokeWeight(0.3);

      stroke(80, 90, 210);

      circle(x, y, radius);

    }

  }

}