// define a function which takes four arguments // and draws a bull's eye pattern function bulls_eye(x, y, size, color) { // loop the variable r from 25 to 'size' in steps of 25 loop(25, size, 25, r { // x, y, radius r, color, stroke width 20 circle(x, y, r, color, 20) }) } // center bull's eye bulls_eye((1/2)*width, (1/2)*height, height/4, 'red') // top left bulls_eye((1/4)*width, (1/4)*height, height/6, 'green') // top right bulls_eye((1/4)*width, (3/4)*height, height/6, 'blue') // bottom left bulls_eye((3/4)*width, (1/4)*height, height/6, 'pink') // bottom right bulls_eye((3/4)*width, (3/4)*height, height/6, 'maroon')