New functions

frameRate( ) 

• could adjust the speed of website refresh

   this should be in the setup() not in draw()
  

• sin() the value between(1,-1)

  when sin(frameRate) special wave follow time occur

• could be a time controller

  etc. let the circle bigger with time

use for() cycle to create 5 shapes

for (let i = 0; i < 5; i++) {
    ellipse(200 + sin(frameCount/10) * 20,
      100+(i*50), 40, 40);
  }

width : get the x value of canvas

height : get the y value of canvas

modulo %

11%5 = 1

Make object clickable

mousePressed means that previous object(by . ) become clickable

Create button

create a button and the object can be interact

Use overlapping computation to narrow down the distance