X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fgeometry%2Foperators.h;h=295daa1a6b4fc2471eb2c88007b3ff3eb9e39af7;hb=c68b073db752dcdcf8c900efba7d8a5da091751c;hp=2dfa54e604cd883eece0f7b1543d4e2bc54677f7;hpb=2efa2ecd04a9c38d31e91950eac098faa3e5ca08;p=l2e.git

diff --git a/src/geometry/operators.h b/src/geometry/operators.h
index 2dfa54e..295daa1 100644
--- a/src/geometry/operators.h
+++ b/src/geometry/operators.h
@@ -26,13 +26,11 @@ inline Point<T> operator +(const Point<T> &lhs, const Vector<T> &rhs) {
 
 template<class T>
 inline Vector<T> &operator +=(Vector<T> &lhs, const Vector<T> &rhs) {
-	lhs = lhs + rhs;
-	return lhs;
+	return lhs = lhs + rhs;
 }
 template<class T>
 inline Point<T> &operator +=(Point<T> &lhs, const Vector<T> &rhs) {
-	lhs = lhs + rhs;
-	return lhs;
+	return lhs = lhs + rhs;
 }
 
 template<class T>
@@ -44,6 +42,15 @@ inline Point<T> operator -(const Point<T> &lhs, const Vector<T> &rhs) {
 	return Point<T>(lhs.X() - rhs.X(), lhs.Y() - rhs.Y());
 }
 
+template<class T>
+inline Vector<T> &operator -=(Vector<T> &lhs, const Vector<T> &rhs) {
+	return lhs = lhs - rhs;
+}
+template<class T>
+inline Point<T> &operator -=(Point<T> &lhs, const Vector<T> &rhs) {
+	return lhs = lhs - rhs;
+}
+
 template<class T>
 inline Vector<T> operator -(const Vector<T> &v) {
 	return Vector<T>(-v.X(), -v.Y());