code: func (imd *IMDraw) EllipseArc(radius pixel.Vec, low, high, thickness float64) {
  	if thickness == 0 {
  		imd.fillEllipseArc(radius, low, high)
  	} else {
  		imd.outlineEllipseArc(radius, low, high, thickness, true)
  	}
  }
docs: // EllipseArc draws an ellipse arc of the specified radius in each axis around each Pushed point. If
  // the thickness is 0, the arc will be filled, otherwise will be outlined. The arc starts at the low
  // angle and continues to the high angle. If low<high, the arc will be drawn counterclockwise.
  // Otherwise it will be clockwise. The angles are not normalized by any means.
  //
  //   imd.EllipseArc(pixel.V(100, 50), 0, 8*math.Pi, 0)
  //
  // This line will fill the whole ellipse 4 times.