X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fmath%2FSGRect.hxx;h=86dd482c9c8875c54bdd848abff6fe2df6656e32;hb=8c38f799adf4f4ece8c79dd1e6ff5a75d85a17dc;hp=ad5771e9c803c37c6bdabc24f24c72c51b9c0b96;hpb=8896a59dff3a5efc5d5be3e999e662bf0f174b60;p=simgear.git

diff --git a/simgear/math/SGRect.hxx b/simgear/math/SGRect.hxx
index ad5771e9..86dd482c 100644
--- a/simgear/math/SGRect.hxx
+++ b/simgear/math/SGRect.hxx
@@ -34,7 +34,7 @@ class SGRect
 
     }
 
-    SGRect(const SGVec2<T>& pt):
+    explicit SGRect(const SGVec2<T>& pt):
       _min(pt),
       _max(pt)
     {
@@ -88,11 +88,15 @@ class SGRect
     T y() const { return _min.y(); }
     T width() const { return _max.x() - _min.x(); }
     T height() const { return _max.y() - _min.y(); }
+    SGVec2<T> const& pos() const { return _min; }
+    SGVec2<T> size() const { return SGVec2<T>(width(), height()); }
 
     void setX(T x) { T w = width(); _min.x() = x; _max.x() = x + w; }
     void setY(T y) { T h = height(); _min.y() = y; _max.y() = y + h; }
     void setWidth(T w) { _max.x() = _min.x() + w; }
     void setHeight(T h) { _max.y() = _min.y() + h; }
+    void setPos(const SGVec2<T>& p) { setX(p.x()); setY(p.y()); }
+    void setSize(const SGVec2<T>& s) { setWidth(s.x()); setHeight(s.y()); }
 
     T l() const { return _min.x(); }
     T r() const { return _max.x(); }
@@ -109,6 +113,18 @@ class SGRect
     void setTop(T t) { _min.y() = t; }
     void setBottom(T b) { _max.y() = b; }
 
+    /**
+     * Expand rectangle to include the given position
+     */
+    void expandBy(T x, T y)
+    {
+      if( x < _min.x() ) _min.x() = x;
+      if( x > _max.x() ) _max.x() = x;
+
+      if( y < _min.y() ) _min.y() = y;
+      if( y > _max.y() ) _max.y() = y;
+    }
+
     /**
      * Move rect by vector
      */
@@ -129,6 +145,17 @@ class SGRect
       return *this;
     }
 
+    bool operator==(const SGRect<T>& rhs) const
+    {
+      return _min == rhs._min
+          && _max == rhs._max;
+    }
+
+    bool operator!=(const SGRect<T>& rhs) const
+    {
+      return !(*this == rhs);
+    }
+
     bool contains(T x, T y) const
     {
       return _min.x() <= x && x <= _max.x()
@@ -176,4 +203,8 @@ std::basic_ostream<char_type, traits_type>&
 operator<<(std::basic_ostream<char_type, traits_type>& s, const SGRect<T>& rect)
 { return s << "min = " << rect.getMin() << ", max = " << rect.getMax(); }
 
+typedef SGRect<int> SGRecti;
+typedef SGRect<float> SGRectf;
+typedef SGRect<double> SGRectd;
+
 #endif /* SG_RECT_HXX_ */