submission by SSample for Pokemon Drawing (View the other submissions)
function setup(){
  var myCanvas = createCanvas(800, 800); //you must keep this line unmodified
}

function draw() {
  var red = color(255, 0, 0)
  var black = color(0)
  var light_gray = color(192, 192, 192)
  var white = color(255)

    // if you want to change any variable, then you have to multiply or divide by two
  var pokeball_x = 200
  var pokeball_y = 200
  var pokeball_width = 300
  var pokeball_height = 300

  stroke(black)
  fill(red)
  ellipse(pokeball_x, pokeball_y, pokeball_width, pokeball_height)
  fill(white)
  arc(pokeball_x, pokeball_y, pokeball_width, pokeball_height, 0, PI)
  fill(black)
  ellipse(pokeball_x * 1.1425, pokeball_y, pokeball_width * 0.333333, pokeball_height * 0.333333)
  rect(pokeball_x * 0.25, pokeball_y * 0.95, pokeball_width * 0.996666, pokeball_height * 0.066666)
  fill(white)
  ellipse(pokeball_x * 1.1425, pokeball_y, pokeball_width * 0.25, pokeball_height * 0.25)
  ellipse(pokeball_x * 1.1425, pokeball_y, pokeball_width * 0.166666, pokeball_height * 0.166666)
}