public boolean containsAngle(double a) {  throw new Error("not implemented");
public boolean containsAngle(double a) { double start = getAngleStart(); double end = start + getAngleExtent();  start %= 360; if (start < 0) start += 360;  end %= 360; if (end < 0) end += 360;  a %= 360; if (a < 0) a += 360;  return a >= start && a <= end;
	public boolean containsAngle(double a) {		// XXX Implement.		throw new Error("not implemented");	}