Added a convenience constructor, non-const accessors, and an

isOverlapping method to test for overlap with another rectangle.

src/Lib/Geometry/rectangle.cxx

@@ -16,6 +16,12 @@ Rectangle::Rectangle (const Rectangle &r)
 {
 }
 
+Rectangle::Rectangle (const Point3D &min, const Point3D &max)
+  : _min(min),
+    _max(max)
+{
+}
+
 Rectangle::~Rectangle ()
 {
 }
@@ -55,4 +61,13 @@ Rectangle::isInside (const Point3D &p) const
 	  (p.y() >= _min.y() && p.y() <= _max.y()));
 }
 
+bool
+Rectangle::isOverlapping (const Rectangle &r) const
+{
+  const Point3D &min = r.getMin();
+  const Point3D &max = r.getMax();
+  return ((max.x() >= _min.x()) && (min.x() <= _max.x()) &&
+	  (max.y() >= _min.y()) && (min.y() <= _max.y()));
+}
+
 // end of rectangle.cxx

src/Lib/Geometry/rectangle.hxx

@@ -39,6 +39,11 @@ public:
    */
   Rectangle (const Rectangle &r);
 
+  /**
+   * Convenience constructor.
+   */
+  Rectangle (const Point3D &min, const Point3D &max);
+
   /**
    * Destructor.
    */
@@ -58,6 +63,20 @@ public:
    */
   virtual const Point3D &getMax () const { return _max; }
 
+  /**
+   * Get the minimum (top left) corner of the rectangle.
+   *
+   * @return The top-left vertex.
+   */
+  virtual Point3D &getMin () { return _min; }
+
+  /**
+   * Get the maximum (bottom right) corner of the rectangle.
+   *
+   * @return The bottom-right vertex.
+   */
+  virtual Point3D &getMax () { return _max; }
+
   /**
    * Set the minimum (top-left) corner of the rectangle.
    *
@@ -90,6 +109,15 @@ public:
    */
   virtual bool isInside (const Point3D &p) const;
 
+  /**
+   * Test whether this rectangle overlaps with another one.
+   *
+   * @param r The rectangle to test.
+   * @return true if the rectangle is touching or overlapping, false
+   * otherwise.
+   */
+  virtual bool isOverlapping (const Rectangle &r) const;
+
 private:
   Point3D _min;
   Point3D _max;