diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 4a54f39..d706f06 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/SurfTriMeshBooleans.cpp b/SurfTriMeshBooleans.cpp
index 4ed9b8a..f91c87f 100644
--- a/SurfTriMeshBooleans.cpp
+++ b/SurfTriMeshBooleans.cpp
@@ -1807,7 +1807,7 @@ SurfTriMesh::IntersectTriMeshTriangle( SurfTriMesh& Other)
   
   // Se i triangoli delle superfici non si intersecano, una delle due è totalmente interna o esterna all'altra.
    bool bRetriangulated = true ;
-   if ( ! bModif) {
+   if ( ! bModif  &&  ( int( AmbiguosA.size()) == 0  ||  int( AmbiguosB.size()) == 0)) {
       bRetriangulated = false ;
       int nVertNum = 0 ;
       Point3d ptFirstV ;
diff --git a/VolZmap.cpp b/VolZmap.cpp
index 896d90d..408a90e 100644
--- a/VolZmap.cpp
+++ b/VolZmap.cpp
@@ -14,6 +14,7 @@
 //--------------------------- Include ----------------------------------------
 #include "stdafx.h"
 #include "VolZmap.h"
+#include "DistPointLine.h"
 #include "GeoObjFactory.h"
 #include "NgeWriter.h"
 #include "NgeReader.h"
@@ -1359,6 +1360,60 @@ VolZmap::RemovePart( int nPart)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+int
+VolZmap::GetPartMinDistFromPoint( const Point3d& ptP) const
+{
+  // Verifico lo stato e che siano definibili le componenti connesse
+   if ( m_nStatus != OK  ||  m_nMapNum == 1)
+      return - 1 ;
+  // Se il numero di componenti è indefinito, lo ricalcolo
+   if ( m_nConnectedCompoCount == -1)
+      const_cast<VolZmap*>( this)->CheckMapConnection() ;
+  // Se non vi sono componenti, abbiamo finito
+   if ( m_nConnectedCompoCount == 0)
+      return - 1 ;
+  // Porto il punto nel riferimento intrinseco
+   Point3d ptPL = ptP ;
+   ptPL.ToLoc( m_MapFrame) ;
+  // Trovo la componente connessa di minima distanza dal punto
+   double dMinDist = DBL_MAX ;
+   int nMinDistPart = - 1 ;
+   for ( int nMap = 0 ; nMap < m_nMapNum ; ++ nMap) {
+      for ( int nDex = 0 ; nDex < m_nDim[nMap] ; ++ nDex) {
+         double dX = ( ( nDex % m_nNx[nMap]) + 0.5) * m_dStep ;
+         double dY = ( ( nDex / m_nNx[nMap]) + 0.5) * m_dStep ;
+         int nIntervalNum = int( m_Values[nMap][nDex].size()) ;
+         for ( int nInt = 0 ; nInt < nIntervalNum ; ++ nInt) {
+            Point3d ptSt( dX, dY, m_Values[nMap][nDex][nInt].dMin) ;
+            Point3d ptEn( dX, dY, m_Values[nMap][nDex][nInt].dMax) ;
+           // Riporto le coordinate cicliche delle normali nell'ordine di partenza (da griglia a sistema intrinseco)
+            if ( nMap == 1) {
+               swap( ptSt.x, ptSt.z) ;
+               swap( ptSt.y, ptSt.z) ;
+               swap( ptEn.x, ptEn.z) ;
+               swap( ptEn.y, ptEn.z) ;
+            }
+            else if ( nMap == 2) {
+               swap( ptSt.y, ptSt.z) ;
+               swap( ptSt.x, ptSt.z) ;
+               swap( ptEn.y, ptEn.z) ;
+               swap( ptEn.x, ptEn.z) ;
+            }
+           // Calcolo la distanza del punto dal segmento corrente. Se è minore della minima distanza aggiorno quest'ultima
+           // e la corrispondente componente connessa di minima distanza con la distanza e la componente connessa correnti.
+            double dDist ;
+            DistPointLine DistCalc( ptPL, ptSt, ptEn) ;
+            if ( DistCalc.GetDist( dDist)  &&  dDist < dMinDist) {
+               dMinDist = dDist ;
+               nMinDistPart = m_Values[nMap][nDex][nInt].nCompo ;
+            }
+         }
+      }
+   }
+   return nMinDistPart ;
+}
+
 //----------------------------------------------------------------------------
 bool
 VolZmap::SetToModifyDexelBlocks( int nGrid, int nDex, int nInt) 
diff --git a/VolZmap.h b/VolZmap.h
index 850dcab..8472de1 100644
--- a/VolZmap.h
+++ b/VolZmap.h
@@ -104,6 +104,7 @@ class VolZmap : public IVolZmap, public IGeoObjRW
       bool GetPartBBox( int nPart, const Frame3d& frRef, BBox3d& b3Ref, int nFlag = BBF_STANDARD) const override ;
       VolZmap* ClonePart( int nPart) const override ;
       bool RemovePart( int nPart) override ;
+      int GetPartMinDistFromPoint( const Point3d& ptP) const override ;
 
    public :                      // IGeoObjRW
       int GetNgeId( void) const override ;