public boolean equals(Object obj) {
if (!(obj instanceof IntervalOfTime)) return false;
IntervalOfTime i = (IntervalOfTime) obj;
return isLowClosed() == i.isLowClosed()
&& isHighClosed() == i.isHighClosed()
&& getLow().equals(i.getLow())
&& getHigh().equals(i.getHigh());
}
public Object clone() {
try {
IntervalOfTime i = (IntervalOfTime) super.clone();
i.low = i.low.clone();
i.high = i.high.clone();
return i;
} catch (CloneNotSupportedException e) {
return null; // should never occur
}
}
public static IntervalOfTime intersection(IntervalOfTime i1, IntervalOfTime i2) {
if (i1.getLow().before(i2.getLow())) {
if (i2.getLow().after(i1.getHigh())) {
return null;
}
return new IntervalOfTime(i2.getLow(), i1.getHigh());
}
if (i1.getLow().after(i2.getHigh())) {
return null;
}
return new IntervalOfTime(i1.getLow(), i2.getHigh());
}
public static IntervalOfTime convexHull(IntervalOfTime i1, IntervalOfTime i2) {
PointInTime t1;
PointInTime t2;
boolean lowClosed;
boolean highClosed;
if (i1.low.before(i2.low)) {
t1 = i1.low;
lowClosed = i1.isLowClosed();
} else {
t1 = i2.low;
lowClosed = i2.isLowClosed();
}
if (i1.high.after(i2.high)) {
t2 = i1.high;
highClosed = i1.isHighClosed();
} else {
t2 = i2.high;
highClosed = i2.isHighClosed();
}
return new IntervalOfTime(t1, t2, lowClosed, highClosed);
}
public boolean contains(IntervalOfTime i) {
return getLow().before(i.getLow()) && getHigh().after(i.getLow());
}