anchor: love.graphics.circle
  Draws a circle.
  love.graphics.circle( mode, x, y, radius )
  mode DrawMode How to draw the circle.
  x number The position of the center along x-axis.
  y number The position of the center along y-axis.
  radius number The radius of the circle.
  love.graphics.circle( mode, x, y, radius, segments )
  mode DrawMode How to draw the circle.
  x number The position of the center along x-axis.
  y number The position of the center along y-axis.
  radius number The radius of the circle.
  segments number The number of segments used for drawing the circle. Note: The default variable for the segments parameter varies between different versions of LÖVE.