Added TimeRange.getMiddle()

src/time/TimeRange.cpp

@@ -31,6 +31,10 @@ time_type TimeRange::getDuration() const {
 	return end - start;
 }
 
+time_type TimeRange::getMiddle() const {
+	return (start + end) / 2;
+}
+
 bool TimeRange::empty() const {
 	return start == end;
 }

src/time/TimeRange.h

@@ -17,6 +17,7 @@ public:
 	time_type getStart() const;
 	time_type getEnd() const;
 	time_type getDuration() const;
+	time_type getMiddle() const;
 	bool empty() const;
 
 	void setStart(time_type newStart);