createCanvas(400, 400);

  background(255,255,0);

  ellipse(400,200,100,100);

  ellipse(0,200,100,100);

  ellipse(200,0,100,100);

  ellipse(200,400,100,100);

  fill(0,0,255,255);  

  stroke(0,0,0);

  //noStroke();

  strokeWeight(2);

  ellipse(width/2, height/2,200,200);

    fill(0,255,255);

  strokeWeight(5);

  rect(width/2-50,height/2-50,100,100);

  triangle(width/2,height/2-25,width/2-25,height/2+25,

           width/2+25,height/2+25);

  line(160,240,240,240);

} 

​