diff --git a/BBox3d.cpp b/BBox3d.cpp
index bc19d11..17c9f02 100644
--- a/BBox3d.cpp
+++ b/BBox3d.cpp
@@ -24,6 +24,13 @@ BBox3d::BBox3d( const Point3d ptP1, const Point3d ptP2)
    m_ptMax.Set( __max( ptP1.x, ptP2.x), __max( ptP1.y, ptP2.y), __max( ptP1.z, ptP2.z)) ;
 }
 
+//----------------------------------------------------------------------------
+BBox3d::BBox3d( double dX1, double dY1, double dZ1, double dX2, double dY2, double dZ2)
+{
+   m_ptMin.Set( __min( dX1, dX2), __min( dY1, dY2), __min( dZ1, dZ2)) ;
+   m_ptMax.Set( __max( dX1, dX2), __max( dY1, dY2), __max( dZ1, dZ2)) ;
+}
+
 //----------------------------------------------------------------------------
 void
 BBox3d::Set( const Point3d ptP1, const Point3d ptP2)
@@ -32,6 +39,14 @@ BBox3d::Set( const Point3d ptP1, const Point3d ptP2)
    m_ptMax.Set( __max( ptP1.x, ptP2.x), __max( ptP1.y, ptP2.y), __max( ptP1.z, ptP2.z)) ;
 }
 
+//----------------------------------------------------------------------------
+void
+BBox3d::Set( double dX1, double dY1, double dZ1, double dX2, double dY2, double dZ2)
+{
+   m_ptMin.Set( __min( dX1, dX2), __min( dY1, dY2), __min( dZ1, dZ2)) ;
+   m_ptMax.Set( __max( dX1, dX2), __max( dY1, dY2), __max( dZ1, dZ2)) ;
+}
+
 //----------------------------------------------------------------------------
 bool
 BBox3d::IsValid( void) const
@@ -119,6 +134,16 @@ BBox3d::GetCenterExtent( Point3d& ptCenter, Vector3d& vtExtent) const
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+BBox3d::GetCenter( Point3d& ptCenter) const
+{
+   if ( ! IsValid())
+      return false ;
+   ptCenter = 0.5 * ( m_ptMin + m_ptMax) ;
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 BBox3d::ToGlob( const Frame3d& frRef)
diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 8ff2edd..d13912e 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ