1 files changed, 57 insertions, 0 deletions
diff --git a/include/basegfx/range/b2ibox.hxx b/include/basegfx/range/b2ibox.hxx
index b5c4d33bfb63..09ae867c85b0 100644
--- a/include/basegfx/range/b2ibox.hxx
+++ b/include/basegfx/range/b2ibox.hxx
@@ -104,6 +104,13 @@ namespace basegfx
             return maRangeX.isEmpty() || maRangeY.isEmpty();
         }
 
+        /// reset the object to empty state again, clearing all values
+        void reset()
+        {
+            maRangeX.reset();
+            maRangeY.reset();
+        }
+
         bool operator==( const B2IBox& rBox ) const
         {
             return (maRangeX == rBox.maRangeX
@@ -170,6 +177,24 @@ namespace basegfx
                 );
         }
 
+        /// return difference between upper and lower value. returns (0,0) for empty sets.
+        B2I64Tuple getRange() const
+        {
+            return B2I64Tuple(
+                maRangeX.getRange(),
+                maRangeY.getRange()
+                );
+        }
+
+        /// return center point of set. returns (0,0) for empty sets.
+        B2DPoint getCenter() const
+        {
+            return B2DPoint(
+                maRangeX.getCenter(),
+                maRangeY.getCenter()
+                );
+        }
+
         /// yields true if point is contained in set
         bool isInside(const B2ITuple& rTuple) const
         {
@@ -179,6 +204,24 @@ namespace basegfx
                 );
         }
 
+        /// yields true if rBox is inside, or equal to set
+        bool isInside(const B2IBox& rBox) const
+        {
+            return (
+                maRangeX.isInside(rBox.maRangeX)
+                && maRangeY.isInside(rBox.maRangeY)
+                );
+        }
+
+        /// yields true if rBox at least partly inside set
+        bool overlaps(const B2IBox& rBox) const
+        {
+            return (
+                maRangeX.overlaps(rBox.maRangeX)
+                && maRangeY.overlaps(rBox.maRangeY)
+                );
+        }
+
         /// add point to the set, expanding as necessary
         void expand(const B2ITuple& rTuple)
         {
@@ -186,6 +229,13 @@ namespace basegfx
             maRangeY.expand(rTuple.getY());
         }
 
+        /// add rBox to the set, expanding as necessary
+        void expand(const B2IBox& rBox)
+        {
+            maRangeX.expand(rBox.maRangeX);
+            maRangeY.expand(rBox.maRangeY);
+        }
+
         /// calc set intersection
         void intersect(const B2IBox& rBox)
         {
@@ -193,6 +243,13 @@ namespace basegfx
             maRangeY.intersect(rBox.maRangeY);
         }
 
+        /// grow set by nValue on all sides
+        void grow(sal_Int32 nValue)
+        {
+            maRangeX.grow(nValue);
+            maRangeY.grow(nValue);
+        }
+
     private:
         BasicBox        maRangeX;
         BasicBox        maRangeY;