Math: functions for bottom right and top left Rectangle corners.

src/Math/Geometry/Rectangle.h

@@ -85,6 +85,12 @@ template<class T> class Rectangle {
         inline Vector2<T>& bottomLeft() { return _bottomLeft; }
         inline constexpr Vector2<T> bottomLeft() const { return _bottomLeft; } /**< @overload */
 
+        /** @brief Bottom right corner */
+        inline constexpr Vector2<T> bottomRight() const { return {_topRight.x(), _bottomLeft.y()}; } /**< @overload */
+
+        /** @brief Top left corner */
+        inline constexpr Vector2<T> topLeft() const { return {_bottomLeft.x(), _topRight.y()}; } /**< @overload */
+
         /** @brief Top right corner */
         inline Vector2<T>& topRight() { return _topRight; }
         inline constexpr Vector2<T> topRight() const { return _topRight; } /**< @overload */

src/Math/Geometry/Test/RectangleTest.cpp

@@ -51,6 +51,9 @@ void RectangleTest::access() {
     CORRADE_COMPARE(crect.top(), 30);
     CORRADE_COMPARE(crect.left(), 34);
     CORRADE_COMPARE(crect.right(), 47);
+
+    CORRADE_COMPARE(rect.topLeft(), Vector2i(34, 30));
+    CORRADE_COMPARE(rect.bottomRight(), Vector2i(47, 23));
 }
 
 void RectangleTest::compare() {