anchor: love.graphics.arc
  Draws a filled or unfilled arc at position (x, y). The arc is drawn from angle1 to angle2 in radians. The segments parameter determines how many segments are used to draw the arc. The more segments, the smoother the edge.
  love.graphics.arc( drawmode, x, y, radius, angle1, angle2, segments )
  drawmode DrawMode How to draw the arc.
  x number The position of the center along x-axis.
  y number The position of the center along y-axis.
  radius number Radius of the arc.
  angle1 number The angle at which the arc begins.
  angle2 number The angle at which the arc terminates.
  segments (10) number The number of segments used for drawing the arc.
  love.graphics.arc( drawmode, arctype, x, y, radius, angle1, angle2, segments )
  drawmode DrawMode How to draw the arc.
  arctype ArcType The type of arc to draw.
  x number The position of the center along x-axis.
  y number The position of the center along y-axis.
  radius number Radius of the arc.
  angle1 number The angle at which the arc begins.
  angle2 number The angle at which the arc terminates.
  segments (10) number The number of segments used for drawing the arc.