@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((angle == null) ? 0 : angle.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
Direction other = (Direction) obj;
if (angle == null) {
if (other.angle != null) return false;
} else if (!angle.equals(other.angle)) return false;
return true;
}