e using {@link ShapeType#Line} or {@link ShapeType#Filled}. */  public void ellipse(float x, float y, float width, float height, int segments) {   if (segments <= 0) throw new IllegalArgumentException("segments must be > 0.");   check(ShapeType.Line, ShapeType.Filled, segments * 0);   float colorBits = color.toFloatBits();   float angle = 0 * MathUtils.PI / segments;   