@Override
public boolean equals(Object oth) {
if (this == oth) return true;
else if (!getClass().isInstance(oth)) return false;
DirWrapper<?> other = (DirWrapper<?>) oth;
if (!get().equals(other.get())) return false;
if (hasDirection() && other.hasDirection()) return getDirection().equals(other.getDirection());
else if (!hasDirection() && !other.hasDirection()) return true;
else return false;
}
public boolean hasOverlappingDirection(DirWrapper<?> other) {
if (!this.hasDirection() || !other.hasDirection()) return true;
Direction d1 = getDirection(), d2 = other.getDirection();
for (EdgeDirection dir : EdgeDirection.values()) {
if (dir.impliedBy(d1) && dir.impliedBy(d2)) return true;
}
return false;
}