X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FSMESHUtils%2FSMESH_Octree.cxx;h=a8630f3168421d8eaa24800f8d07c7ea55268a39;hb=f016bdf914220827ec8f9a7048bc78fc3fb8c299;hp=e7b049722399abd872d5a4fe6adb4eafe325f7a5;hpb=7a65c9fad427b1ccba6b9ccae612296e5092a324;p=modules%2Fsmesh.git

diff --git a/src/SMESHUtils/SMESH_Octree.cxx b/src/SMESHUtils/SMESH_Octree.cxx
index e7b049722..a8630f316 100644
--- a/src/SMESHUtils/SMESH_Octree.cxx
+++ b/src/SMESHUtils/SMESH_Octree.cxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2015  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2021  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -28,6 +28,9 @@
 //
 #include "SMESH_Octree.hxx"
 
+#include <Precision.hxx>
+#include <limits>
+
 //===========================================================================
 /*!
  * Constructor. limit must be provided at tree root construction.
@@ -77,3 +80,25 @@ double SMESH_Octree::maxSize() const
   }
   return 0.;
 }
+
+//================================================================================
+/*!
+ * \brief Change size of a box by a factor; each dimension changes independently of others
+ */
+//================================================================================
+
+void SMESH_Octree::enlargeByFactor( Bnd_B3d* box, double factor ) const
+{
+  if ( !box->IsVoid() )
+  {
+    gp_XYZ halfSize = 0.5 * ( box->CornerMax() - box->CornerMin() );
+    for ( int iDim = 1; iDim <= 3; ++iDim )
+    {
+      double newHSize = factor * halfSize.Coord( iDim );
+      if ( newHSize < std::numeric_limits<double>::min() )
+        newHSize = Precision::Confusion(); // 1.e-7
+      halfSize.SetCoord( iDim, newHSize );
+    }
+    box->SetHSize( halfSize );
+  }
+}