diff --git a/API_GeoSnap.cpp b/API_GeoSnap.cpp
index 33ad514..c376a88 100644
--- a/API_GeoSnap.cpp
+++ b/API_GeoSnap.cpp
@@ -504,10 +504,61 @@ __stdcall EgtSurfTmFacetNormVersor( int nId, int nFacet, int nRefId, double vtNo
    return TRUE ;
 }
 
+//----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSurfTmFacetAdjacencies( int nId, int nFacet, int*& vAdj, int* pnCount)
+{
+  // verifica parametri di ritorno
+   if ( &vAdj == nullptr  ||  pnCount == nullptr)
+      return FALSE ;
+  // eseguo
+   INTMATRIX vTmp ;
+   if ( ! ExeSurfTmFacetAdjacencies( nId, nFacet, vTmp))
+      return FALSE ;
+  // recupero il risultato
+   int nDim = 0 ;
+   for ( int i = 0 ; i < int( vTmp.size()) ; ++ i)
+      nDim += int( vTmp[i].size()) + 1 ;
+   vAdj = (int*) malloc( nDim * sizeof( int)) ;
+   if ( vAdj == nullptr)
+      return FALSE ;
+   int nCount = 0 ;
+   for ( int i = 0 ; i < int( vTmp.size()) ; ++ i) {
+      for ( int j = 0 ; j < int( vTmp[i].size()) ; ++ j) {
+         vAdj[nCount] = vTmp[i][j] ;
+         nCount ++ ;
+      }
+      vAdj[nCount] = - 2 ;
+      nCount ++ ;
+   }
+   *pnCount = nCount ;
+   return TRUE ;
+}
+
+//----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSurfTmFacetsContact( int nId, int nF1, int nF2, int nRefId, bool* pbAdjac, double ptP1[3], double ptP2[3], double* pdAng)
+{
+  // verifica parametri di ritorno
+   if ( pbAdjac == nullptr  ||  ptP1 == nullptr  ||  ptP2 == nullptr  ||  pdAng == nullptr)
+      return FALSE ;
+  // eseguo
+   Point3d ptMyP1, ptMyP2 ;
+   if ( ! ExeSurfTmFacetsContact( nId, nF1, nF2, nRefId, *pbAdjac, ptMyP1, ptMyP2, *pdAng))
+      return FALSE ;
+  // assegno risultati
+   VEC_FROM_3D( ptP1, ptMyP1)
+   VEC_FROM_3D( ptP2, ptMyP2)
+   return TRUE ;
+}
+
 //----------------------------------------------------------------------------
 BOOL
 __stdcall EgtTextNormVersor( int nId, int nRefId, double vtNorm[3])
 {
+  // verifica parametro di ritorno
+   if ( vtNorm == nullptr)
+      return FALSE ;
   // recupero il vettore normale
    Vector3d vtTmp ;
    if ( ! ExeTextNormVersor( nId, nRefId, vtTmp))
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 782ca73..80bed40 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ