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[dcpomatic.git] / src / lib / rect.h

diff --git a/src/lib/rect.h b/src/lib/rect.h
index 6f4709c088ce137b2c589df64cb69304c1b62373..1feb8ad4fed460d19a9f83439e21bdd0abcc1ea0 100644 (file)
--- a/src/lib/rect.h
+++ b/src/lib/rect.h
@@ -42,6 +42,13 @@ public:
                , height (0)
        {}
 
+       Rect (Position<T> p, T w_, T h_)
+               : x (p.x)
+               , y (p.y)
+               , width (w_)
+               , height (h_)
+       {}
+
        Rect (T x_, T y_, T w_, T h_)
                : x (x_)
                , y (y_)
@@ -54,11 +61,13 @@ public:
        T width;
        T height;
 
-       Position<T> position () const {
+       Position<T> position () const
+       {
                return Position<T> (x, y);
        }
 
-       Rect<T> intersection (Rect<T> const & other) const {
+       Rect<T> intersection (Rect<T> const & other) const
+       {
                T const tx = max (x, other.x);
                T const ty = max (y, other.y);
        
@@ -69,7 +78,16 @@ public:
                        );
        }
 
-       bool contains (Position<T> p) const {
+       void extend (Rect<T> const & other)
+       {
+               x = std::min (x, other.x);
+               y = std::min (y, other.y);
+               width = std::max (x + width, other.x + other.width) - x;
+               height = std::max (y + height, other.y + other.height) - y;
+       }
+
+       bool contains (Position<T> p) const
+       {
                return (p.x >= x && p.x <= (x + width) && p.y >= y && p.y <= (y + height));
        }
 };