diff --git a/CalcPocketing.cpp b/CalcPocketing.cpp
index 966bf33..d51fb4e 100644
--- a/CalcPocketing.cpp
+++ b/CalcPocketing.cpp
@@ -24,14 +24,14 @@
 #include "/EgtDev/Include/EGkCalcPocketing.h"
 #include "/EgtDev/Include/EGkFilletChamfer.h"
 #include "/EgtDev/Include/EGkDistPointCurve.h"
-#include "/EgtDev/Include/EGkDistPointCurve.h"
+#include "/EgtDev/Include/EGkDistPointSurfFr.h"
 #include "/EgtDev/Include/EGkCurveLocal.h"
 #include "/EgtDev/Include/EGkMedialAxis.h"
 #include "/EgtDev/Include/EGkLinePntTgCurve.h"
 #include "/EgtDev/Include/EGkOffsetCurve.h"
 #include "/EgtDev/Include/EGkIntervals.h"
-#include "/EgtDev/Include/EgtNumUtils.h"
 #include "/EgtDev/Include/EGkChainCurves.h"
+#include "/EgtDev/Include/EgtNumUtils.h"
 #include <array>
 
 using namespace std ;
@@ -721,42 +721,6 @@ AssignFeedSpiralOpt( const int nOptType, const PocketParams& PockParams, ICurveC
    return true ;
 }
 
-//----------------------------------------------------------------------------
-static bool
-IsPointInsideSfr( const ISurfFlatRegion* pSfr, const Point3d& pt, bool& bIsInside)
-{
-  // controllo dei parametri
-   if ( pSfr == nullptr  ||  ! pSfr->IsValid()  ||  ! pt.IsValid())
-      return false ;
-   bIsInside = false ;
-
-  // ciclo sui chunk della FlatRegion
-   for ( int i = 0 ; i < pSfr->GetChunkCount() ; i ++) {
-     // verifico se è contenuto nel loop esterno
-      PtrOwner<ICurve> pCrv( pSfr->GetLoop( i, 0)) ;
-      PolyLine PL ;
-      pCrv->ApproxWithLines( 10 * EPS_SMALL, 15, ICurve::APL_STD, PL) ;
-      if ( IsPointInsidePolyLine( pt, PL, EPS_SMALL)) {
-         bool bInsideHole = false ;
-        // verifico se è contenuto in un loop interno
-         for ( int j = 1 ; j < pSfr->GetLoopCount( i) ; j ++) {
-            PtrOwner<ICurve> pCrv( pSfr->GetLoop( i, j)) ;
-            pCrv->ApproxWithLines( 10 * EPS_SMALL, 15, ICurve::APL_STD, PL) ;
-            PL.Invert() ;
-            if ( IsPointInsidePolyLine( pt, PL, EPS_SMALL))
-               bInsideHole = true ;
-         }
-        // se è contenuto nel loop esterno ma non è contenuto in nessuno dei loop interni allora il punto è interno
-         if ( ! bInsideHole) {
-            bIsInside = true ;
-            return true ;
-         }
-      }
-   }
-
-   return true ;
-}
-
 //----------------------------------------------------------------------------
 static bool
 GetCoeffLinArc( const ICurveArc* pArc, double dDiam, double& dSubArc)
@@ -6989,15 +6953,16 @@ AddZigZag( const ISurfFlatRegion* pSrfPock, const ISurfFlatRegion* pSfrOrig, con
             vpCrvs[u]->ToGlob( frPocket) ; 
 
            // controllo se il punto iniziale e finale sono esterni alla superficie originale
+            double dMinDist = max( 0., -PockParams.dRadialOffset) ;
             Point3d ptStart ; vpCrvs[u]->GetStartPoint( ptStart) ;
             bool bIsInside = false ;
-            if ( IsPointInsideSfr( pSfrOrig, ptStart, bIsInside)  &&  ! bIsInside) {
+            if ( IsPointInsideSurfFr( ptStart, pSfrOrig, dMinDist, bIsInside)  &&  ! bIsInside) {
                Vector3d vtMidOut ; vpCrvs[u]->GetStartDir( vtMidOut) ;
                vtMidOut.Invert() ;
                ExtendPathOnOpenEdge( vpCrvs[u], PockParams, pSrfChunk->GetNormVersor(), vtMidOut, false) ;
             }
             Point3d ptEnd ; vpCrvs[u]->GetEndPoint( ptEnd) ;
-            if ( IsPointInsideSfr( pSfrOrig, ptEnd, bIsInside)  &&  ! bIsInside) {
+            if ( IsPointInsideSurfFr( ptEnd, pSfrOrig, dMinDist, bIsInside)  &&  ! bIsInside) {
                Vector3d vtMidOut ; vpCrvs[u]->GetEndDir( vtMidOut) ;
                ExtendPathOnOpenEdge( vpCrvs[u], PockParams, pSrfChunk->GetNormVersor(), vtMidOut, true) ;
             }
diff --git a/DistPointSurfFr.cpp b/DistPointSurfFr.cpp
new file mode 100644
index 0000000..ca318ed
--- /dev/null
+++ b/DistPointSurfFr.cpp
@@ -0,0 +1,156 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2018-2020
+//----------------------------------------------------------------------------
+// File : DistPointSurfTm.cpp     Data : 19.12.20        Versione : 2.2l3
+// Contenuto : Implementazione della classe distanza Punto da Trimesh.
+//
+//
+//
+// Modifiche : 07.12.18 LM Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#include "stdafx.h"
+#include "SurfFlatRegion.h"
+#include "/EgtDev/Include/EGkDistPointCurve.h"
+#include "/EgtDev/Include/EGkDistPointSurfFr.h"
+
+using namespace std ;
+
+//----------------------------------------------------------------------------
+DistPointSurfFr::DistPointSurfFr( const Point3d& ptP, const ISurfFlatRegion& frSurf)
+   : m_dDist( -1)
+{
+  // FlatRegion non valida 
+   if ( &frSurf == nullptr  ||  ! frSurf.IsValid())
+      return ;
+  // Calcolo la distanza
+   Calculate( ptP, frSurf) ;
+}
+
+//----------------------------------------------------------------------------
+void 
+DistPointSurfFr::Calculate( const Point3d& ptP, const ISurfFlatRegion& frSurf)
+{
+  // Inizializzo distanza non calcolata
+   m_dDist = -1 ;
+
+  // Converto regione in classe base
+   const SurfFlatRegion* pSfr = GetBasicSurfFlatRegion( &frSurf) ;
+   if ( pSfr == nullptr)
+      return ;
+
+  // ciclo sulle parti della regione
+   for ( int nC = 0 ; nC < pSfr->GetChunkCount() ; nC ++) {
+      // ciclo sui loop della parte di regione
+      for ( int nL = 0 ; nL < pSfr->GetLoopCount( nC) ; nL ++) {
+         PtrOwner<ICurve> pLoop( pSfr->GetLoop( nC, nL)) ;
+         if ( IsNull( pLoop)) {
+            m_dDist = -1 ;
+            return ;
+         }
+         DistPointCurve DPL( ptP, *pLoop) ;
+         double dDist ;
+         if ( DPL.GetDist( dDist)  &&  ( m_dDist < -EPS_SMALL  ||  dDist < m_dDist)) {
+            m_dDist = dDist ;
+            int nFlag ;
+            m_nMinChunk = nC ;
+            m_nMinLoop = nL ;
+            DPL.GetParamAtMinDistPoint( 0, m_dMinPar, nFlag) ;
+            DPL.GetMinDistPoint( 0, m_ptMinDistPoint, nFlag) ;
+            DPL.GetSideAtMinDistPoint( 0, pSfr->GetNormVersor(), m_nSide) ;
+         } 
+      }
+   }
+  // se trovata, aggiorno minima distanza sul piano
+   if ( m_dDist > - EPS_SMALL) {
+      Point3d ptOn = ptP - ( ptP - pSfr->GetPlanePoint()) * pSfr->GetNormVersor() * pSfr->GetNormVersor() ;
+      m_dDistOnPlane = min( Dist( ptOn, m_ptMinDistPoint), m_dDist) ;
+   }
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointSurfFr::GetDist( double& dDist) const
+{
+   if ( m_dDist < 0)
+      return false ;
+   dDist = m_dDist ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointSurfFr::GetDistOnRegionPlane( double& dDist) const
+{
+   if ( m_dDist < 0)
+      return false ;
+   dDist = m_dDistOnPlane ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointSurfFr::GetPointAtMinDist( Point3d& ptMinDist) const
+{
+   if ( m_dDist < 0)
+      return false ;
+   ptMinDist = m_ptMinDistPoint ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointSurfFr::GetParamAtMinDist( int& nMinChunk, int& nMinLoop, double& dMinPar) const
+{
+   if ( m_dDist < 0)
+      return false ;
+   nMinChunk = m_nMinChunk ;
+   nMinLoop = m_nMinLoop ;
+   dMinPar = m_dMinPar ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+DistPointSurfFr::GetSideAtMinDist( int& nSide) const
+{
+   if ( m_dDist < 0)
+      return false ;
+   nSide = m_nSide ;
+   return true ;
+}
+
+//----------------------------------------------------------------------------
+bool
+IsPointInsideSurfFr( const Point3d& ptP, const ISurfFlatRegion* pSfr, double dMinDist, bool& bInside, int& nChunk)
+{
+  // default non include
+   bInside = false ;
+   nChunk = -1 ;
+  // verifica regione
+   if ( pSfr == nullptr  ||  ! pSfr->IsValid())
+      return false ;
+  // verifico se la proiezione del punto sul piano della regione sta nel suo box
+   Point3d ptOn = ptP - ( ptP - pSfr->GetPlanePoint()) * pSfr->GetNormVersor() * pSfr->GetNormVersor() ;
+   BBox3d b3Box ;
+   pSfr->GetLocalBBox( b3Box) ;
+   b3Box.Expand( dMinDist) ;
+   if ( ! b3Box.Encloses( ptOn))
+      return true ;
+  // determino dove sta il punto
+   DistPointSurfFr DPR( ptP, *pSfr) ;
+   double dDist ; int nMinCh, nMinL; double dMinPar ; int nSide ;
+   if ( DPR.GetDistOnRegionPlane( dDist)  &&  DPR.GetParamAtMinDist( nMinCh, nMinL, dMinPar)  &&  DPR.GetSideAtMinDist( nSide)) {
+      if ( abs( dMinDist) < EPS_SMALL)
+         bInside = ( nSide != PRS_OUT) ;
+      else if ( dMinDist < 0)
+         bInside = ( nSide == PRS_IN  &&  dDist > abs( dMinDist) - EPS_SMALL) ;
+      else
+         bInside = ( nSide != PRS_OUT  ||  dDist < dMinDist + EPS_SMALL) ;
+      if ( bInside)
+         nChunk = nMinCh ;
+   }
+   return true ;
+}
diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 11258ea..2af9636 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/EgtGeomKernel.vcxproj b/EgtGeomKernel.vcxproj
index 2a61ee7..825a635 100644
--- a/EgtGeomKernel.vcxproj
+++ b/EgtGeomKernel.vcxproj
@@ -310,6 +310,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClCompile Include="CurveByApprox.cpp" />
     <ClCompile Include="CurveByInterp.cpp" />
     <ClCompile Include="CurveCompositeOffset.cpp" />
+    <ClCompile Include="DistPointSurfFr.cpp" />
     <ClCompile Include="IntersCurveSurfTm.cpp">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</ExcludedFromBuild>
diff --git a/EgtGeomKernel.vcxproj.filters b/EgtGeomKernel.vcxproj.filters
index 7b4369b..0eff6b3 100644
--- a/EgtGeomKernel.vcxproj.filters
+++ b/EgtGeomKernel.vcxproj.filters
@@ -546,6 +546,9 @@
     <ClCompile Include="SbzFromCurves.cpp">
       <Filter>File di origine\GeoCreate</Filter>
     </ClCompile>
+    <ClCompile Include="DistPointSurfFr.cpp">
+      <Filter>File di origine\GeoDist</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="stdafx.h">
diff --git a/SurfFlatRegion.cpp b/SurfFlatRegion.cpp
index 41b74cb..4c60547 100644
--- a/SurfFlatRegion.cpp
+++ b/SurfFlatRegion.cpp
@@ -922,9 +922,6 @@ SurfFlatRegion::LocToLoc( const Frame3d& frOri, const Frame3d& frDest)
 bool
 SurfFlatRegion::GetArea( double& dArea) const
 {
-  // controllo parametro di ritorno
-   if ( &dArea == nullptr)
-      return false ;
   // inizio con area nulla
    dArea = 0 ;
   // la regione deve essere validata
@@ -947,9 +944,6 @@ SurfFlatRegion::GetArea( double& dArea) const
 bool
 SurfFlatRegion::GetGrossArea( double& dArea) const
 {
-  // controllo parametro di ritorno
-   if ( &dArea == nullptr)
-      return false ;
   // inizio con area nulla
    dArea = 0 ;
   // la regione deve essere validata
@@ -973,9 +967,6 @@ SurfFlatRegion::GetGrossArea( double& dArea) const
 bool
 SurfFlatRegion::GetCentroid( Point3d& ptCen) const
 {
-  // controllo parametro di ritorno
-   if ( &ptCen == nullptr)
-      return false ;
   // la regione deve essere validata
    if ( m_nStatus != OK  ||  m_vpLoop.empty())
       return false ;
@@ -1001,13 +992,20 @@ SurfFlatRegion::GetCentroid( Point3d& ptCen) const
    return true ;
 }
 
+//----------------------------------------------------------------------------
+int
+SurfFlatRegion::GetChunkCount( void) const
+{
+  // la regione deve essere validata
+   if ( m_nStatus != OK)
+      return 0 ;
+   return int( m_vExtInd.size()) ;
+}
+
 //----------------------------------------------------------------------------
 bool
 SurfFlatRegion::GetChunkCentroid( int nChunk, Point3d& ptCen) const
 {
-  // controllo parametro di ritorno
-   if ( &ptCen == nullptr)
-      return false ;
   // la regione deve essere validata
    if ( m_nStatus != OK  ||  m_vpLoop.empty())
       return false ;
@@ -1021,13 +1019,53 @@ SurfFlatRegion::GetChunkCentroid( int nChunk, Point3d& ptCen) const
 }
 
 //----------------------------------------------------------------------------
-int
-SurfFlatRegion::GetChunkCount( void) const
+bool
+SurfFlatRegion::GetChunkArea( int nChunk, double& dArea) const
 {
+  // default, area nulla
+   dArea = 0 ;
   // la regione deve essere validata
-   if ( m_nStatus != OK)
-      return 0 ;
-   return int( m_vExtInd.size()) ;
+   if ( m_nStatus != OK  ||  m_vpLoop.empty())
+      return false ;
+  // il chunk deve esistere
+   if ( nChunk < 0  ||  nChunk >= GetChunkCount())
+      return false ;
+  // calcolo l'area
+   bool bOk = true ;
+   for ( int nL = 0 ; nL < GetLoopCount( nChunk) ; ++ nL) {
+      const ICurve* pLoop = GetMyLoop( nChunk, nL) ;
+      double dLoopArea ;
+      if ( pLoop != nullptr  &&  pLoop->GetAreaXY( dLoopArea)) 
+        dArea += dLoopArea ;
+      else
+         bOk = false ;
+   }
+   return bOk ;
+}
+
+//----------------------------------------------------------------------------
+bool
+SurfFlatRegion::GetChunkPerimeter( int nChunk, double& dLen) const
+{
+  // default, perimetro nullo
+   dLen = 0 ;
+  // la regione deve essere validata
+   if ( m_nStatus != OK  ||  m_vpLoop.empty())
+      return false ;
+  // il chunk deve esistere
+   if ( nChunk < 0  ||  nChunk >= GetChunkCount())
+      return false ;
+  // calcolo il perimetro
+   bool bOk = true ;
+   for ( int nL = 0 ; nL < GetLoopCount( nChunk) ; ++ nL) {
+      const ICurve* pLoop = GetMyLoop( nChunk, nL) ;
+      double dLoopLen ;
+      if ( pLoop != nullptr  &&  pLoop->GetLength( dLoopLen)) 
+        dLen += dLoopLen ;
+      else
+         bOk = false ;
+   }
+   return bOk ;
 }
 
 //----------------------------------------------------------------------------
@@ -1236,6 +1274,56 @@ SurfFlatRegion::CloneChunk( int nChunk) const
    return Release( pSfr) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+SurfFlatRegion::EraseChunk(int nChunk)
+{
+  // la regione deve essere validata
+   if ( m_nStatus != OK  ||  m_vpLoop.empty())
+      return false ;
+  // il chunk deve esistere
+   if ( nChunk < 0  ||  nChunk >= GetChunkCount())
+      return false ;
+  // se un solo chunk, resetto la regione
+   if ( GetChunkCount() == 1) {
+      Clear() ;
+      return true ;
+   }
+  // se ultimo chunk
+   if ( nChunk == m_vExtInd.size() - 1) {
+     // elimino i loop
+      for ( int i = m_vExtInd[nChunk] ; i < int( m_vpLoop.size()) ; ++ i) {
+         delete m_vpLoop[i] ;
+         m_vpLoop[i] = nullptr ;
+      }
+      m_vpLoop.erase( m_vpLoop.begin() + m_vExtInd[nChunk], m_vpLoop.end()) ;
+     // elimino indice di loop esterno
+      m_vExtInd.pop_back() ;
+   }
+  // altrimenti
+   else {
+     // numero di loop da eliminare
+      int nLoopCnt = m_vExtInd[nChunk+1] - m_vExtInd[nChunk] ;
+     // elimino i loop
+      for ( int i = m_vExtInd[nChunk] ; i < m_vExtInd[nChunk+1] ; ++ i) {
+         delete m_vpLoop[i] ;
+         m_vpLoop[i] = nullptr ;
+      }
+      m_vpLoop.erase( m_vpLoop.begin() + m_vExtInd[nChunk], m_vpLoop.begin() + m_vExtInd[nChunk+1]) ;
+     // elimino indice di loop esterno
+      m_vExtInd.erase( m_vExtInd.begin() + nChunk) ;
+     // aggiorno indice inizio chunk successivi
+      for ( int i = nChunk ; i < int( m_vExtInd.size()) ; ++i)
+         m_vExtInd[i] -= nLoopCnt ;
+   }
+  // imposto ricalcolo della grafica
+   m_OGrMgr.Reset() ;
+   ResetAuxSurf() ;
+  // imposto ricalcolo Voronoi
+   ResetVoronoiObject() ;
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 SurfFlatRegion::MyGetCurveClassification( const ICurve& Crv, double dLenMin, CRVCVECTOR& ccClass) const
@@ -1560,6 +1648,31 @@ SurfFlatRegion::GetCurveTempProp( int nChunk, int nLoop, int nCrv, int& nProp, i
    return GetBasicCurveComposite( pLoop)->GetCurveTempProp( nCrv, nProp, nPropInd) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+SurfFlatRegion::ResetAllCurveTempProps( void) 
+{
+   for ( int nC = 0 ; nC < GetChunkCount() ; ++ nC) {
+      for ( int nL = 0 ; nL < GetLoopCount( nC) ; ++ nL) {
+         ICurve* pLoop = GetMyLoop( nC, nL) ;
+         if ( pLoop != nullptr) {
+            if ( pLoop->GetType() != CRV_COMPO) {
+               pLoop->SetTempProp( 0, 0) ;
+               pLoop->SetTempProp( 0, 1) ;
+            }
+            else {
+               CurveComposite* pCompoLoop = GetBasicCurveComposite( pLoop) ;
+               for ( int nI = 0 ; nI < pCompoLoop->GetCurveCount() ; ++ nI) {
+                  pCompoLoop->SetCurveTempProp( nI, 0, 0) ;
+                  pCompoLoop->SetCurveTempProp( nI, 0, 1) ;
+               }
+            }
+         }
+      }
+   }
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 SurfFlatRegion::SetCurveTempParam( int nChunk, int nLoop, int nCrv, double dParam, int nParamInd)
@@ -1591,3 +1704,28 @@ SurfFlatRegion::GetCurveTempParam( int nChunk, int nLoop, int nCrv, double& dPar
    }
    return GetBasicCurveComposite( pLoop)->GetCurveTempParam( nCrv, dParam, nParamInd) ;
 }
+
+//----------------------------------------------------------------------------
+bool
+SurfFlatRegion::ResetAllCurveTempParams( void) 
+{
+   for ( int nC = 0 ; nC < GetChunkCount() ; ++ nC) {
+      for ( int nL = 0 ; nL < GetLoopCount( nC) ; ++ nL) {
+         ICurve* pLoop = GetMyLoop( nC, nL) ;
+         if ( pLoop != nullptr) {
+            if ( pLoop->GetType() != CRV_COMPO) {
+               pLoop->SetTempParam( 0, 0) ;
+               pLoop->SetTempParam( 0, 1) ;
+            }
+            else {
+               CurveComposite* pCompoLoop = GetBasicCurveComposite( pLoop) ;
+               for ( int nI = 0 ; nI < pCompoLoop->GetCurveCount() ; ++ nI) {
+                  pCompoLoop->SetCurveTempParam( nI, 0, 0) ;
+                  pCompoLoop->SetCurveTempParam( nI, 0, 1) ;
+               }
+            }
+         }
+      }
+   }
+   return true ;
+}
diff --git a/SurfFlatRegion.h b/SurfFlatRegion.h
index d257fce..be42bea 100644
--- a/SurfFlatRegion.h
+++ b/SurfFlatRegion.h
@@ -94,24 +94,29 @@ class SurfFlatRegion : public ISurfFlatRegion, public IGeoObjRW
               { return m_frF.Orig() ; }
       const Vector3d& GetNormVersor( void) const override
               { return m_frF.VersZ() ; }
+      bool CalcVoronoiDiagram( ICURVEPOVECTOR& vCrvs, int nBound = 3) const override ;
+      void ResetVoronoiObject( void) const override ;
+      bool GetMaxOffset( double& dOffs) const override ;
+      bool CalcMedialAxis( ICURVEPOVECTOR& vCrvs, int nSide) const override ;
+      const SurfTriMesh* GetAuxSurf( void) const override ;
+      bool GetCurveClassification( const ICurve& Crv, double dLenMin, CRVCVECTOR& ccClass) const override ;
       int  GetChunkCount( void) const override ;
+      SurfFlatRegion* CloneChunk( int nChunk) const override ;
+      bool EraseChunk(int nChunk) override ;
+      bool GetChunkCentroid( int nChunk, Point3d& ptCen) const override ;
+      bool GetChunkArea( int nChunk, double& dArea) const override ;
+      bool GetChunkPerimeter( int nChunk, double& dLen) const override ;
+      int  GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion& Other, int nOthChunk) const override ;   // compare only outsides
+      bool GetChunkMaxOffset( int nChunk, double& dOffs) const override ;
       int  GetLoopCount( int nChunk) const override ;
       ICurve* GetLoop( int nChunk, int nLoop) const override ;   // nChunk 0-based, nLoop 0-based (1°esterno, successivi interni) 
       bool ApproxLoopWithLines( int nChunk, int nLoop, double dLinTol, double dAngTolDeg, int nType, PolyLine& PL) const override ;
-      const SurfTriMesh* GetAuxSurf( void) const override ;
-      SurfFlatRegion* CloneChunk( int nChunk) const override ;
-      bool GetChunkCentroid( int nChunk, Point3d& ptCen) const override ;
-      bool GetCurveClassification( const ICurve& Crv, double dLenMin, CRVCVECTOR& ccClass) const override ;
-      int  GetChunkSimpleClassification( int nChunk, const ISurfFlatRegion& Other, int nOthChunk) const override ;   // compare only outsides
-      bool CalcVoronoiDiagram( ICURVEPOVECTOR& vCrvs, int nBound = 3) const override ;
-      bool CalcMedialAxis( ICURVEPOVECTOR& vCrvs, int nSide) const override ;
-      bool GetChunkMaxOffset( int nChunk, double& dOffs) const override ;
-      bool GetMaxOffset( double& dOffs) const override ;
-      void ResetVoronoiObject( void) const override ;
       bool SetCurveTempProp( int nChunk, int nLoop, int nCrv, int nProp, int nPropInd = 0) override ;
       bool GetCurveTempProp( int nChunk, int nLoop, int nCrv, int& nProp, int nPropInd = 0) const override ;
+      bool ResetAllCurveTempProps( void) override ;
       bool SetCurveTempParam( int nChunk, int nLoop, int nCrv, double dParam, int nParamInd = 0) override ;
       bool GetCurveTempParam( int nChunk, int nLoop, int nCrv, double& dParam, int nParamInd = 0) const override ;
+      bool ResetAllCurveTempParams( void) override ;
 
    public :                      // IGeoObjRW
       int GetNgeId( void) const override ;