plankton

let p=[];
let n=500;
function setup(){
  createCanvas(windowWidth,windowHeight);
  strokeWeight(0.5);
  for(let i=0;i<n;i++){
    p.push(new plankton());
  }
}

function draw(){
  background(0,10,50);
  translate(width/2,height/2);
  t=frameCount/1200
  rotate(t*3)
  for (let i = 0;i<n;i++){
    p[i].move();
    p[i].display();
  } 
}

class plankton{
  constructor(){
    this.x1=randomGaussian(-width/2,width/2);
    this.y1=randomGaussian(-height/2,height/2);
    this.type = int(random(1,4.2))
    this.size = int(random(3,20))
    this.radius = random(100,400)
    this.x=this.x1;
    this.y=this.y1;
  }
  move(){
    this.x = this.x1*cos(t*this.type-this.radius)-this.x1*sin(this.type*t)-this.x/4*sin(t+this.x1);
    this.y = this.y1*cos(t/this.size)+this.y1*sin(t+this.radius)*cos(t/5+this.x1);
  }
  display(){
    push()
    rotate(t/1000*this.size)
    if (this.type === 1){
      stroke(255);
      fill(0,180-this.x/2,200+this.y/2);
      circle(this.x,this.y,this.size);
      noStroke()
      fill(190,120,90+this.y/2,90);
      circle(this.x,this.y,this.size/2);
      fill(190+this.x/2,190,90,90);
      circle(this.x,this.y,this.size/4);
    }
    if (this.type === 2){
      push()
      rotate(this.radius*2)
      fill(this.x/10,180-this.x/2,200+this.y/2);
      stroke(0,180-this.x/2,200+this.y/2);
      for(let j=0;j<this.size;j++){
        push()
          rotate(j/50+this.x/1000);
          rect(this.x,this.y+j*2,this.size/5,this.size/20) 
        pop()
      } 
      pop()
    }
    if (this.type ===3){
      push()
      rotate(this.radius*2)
      stroke(255)
      noFill()
      for(let j=0;j<this.type;j++){
        push()
          arc(this.x, this.y+j, this.size*4, this.size*4, 0, TWO_PI/(this.size/2)) 
        pop() 
      }
      pop()
    }
    if (this.type ===4){
      stroke(255)
     push()
      translate(this.x,this.y)
      for (let j=0;j<this.size*2;j++){    
        rotate(j)
        point(j/4,j/4)
      }
    pop() 
    }
    pop()
  }
  
}

function mouseClicked(){
  p=[];
  for(let i=0;i<n;i++){
    p.push(new plankton());
  }

}