goldenTank

let a=100
function setup(){
  createCanvas(windowWidth,windowHeight);
  fill(255);
  noStroke();
  angleMode(DEGREES)
}
function draw(){
  background(0,20,50,a);
  t=frameCount/10;
  translate(width/2,height/2);
  for(let i=0;i<1000;i++){
    fill(50,240-i/4,250-i/4)
    push()
    rotate(137.5*i+t)//golden angle
    circle(0,i/2+i*sin(t)/2+i*sin(i*t/5+i)/30,4)
    pop()
  }
  push()
  translate(width/2-50,height/2-50)
  scale(0.7,0.7)
  stamp()
  pop()
}
function stamp(){
  for(let i=0;i<300;i++){
    fill(0,240-i/4,250-i/4)
    push()
    rotate(137.5*i)//golden angle
    circle(0,i/10,2)
    pop()
  }
}
function mousePressed(){
  background(0,20,50);
  if (a>2){
    a=a-99.9;
  }else{
    a=100
  }
}