From 2f3a6189a74c0953d8d36e07adaa7aad8b11555a Mon Sep 17 00:00:00 2001
From: DarioS <dario.sassi@egaltech.com>
Date: Sun, 5 Feb 2023 15:41:33 +0100
Subject: [PATCH] EgtGeomKernel : - piccola modifica a SurfTriMesh::Cut per
 evitare deformazione facce per aggiustamento vertici su piano di taglio.

---
 Polygon3d.cpp       | 2 +-
 SurfTriMeshCuts.cpp | 9 ++++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/Polygon3d.cpp b/Polygon3d.cpp
index c78cc25..ee20680 100644
--- a/Polygon3d.cpp
+++ b/Polygon3d.cpp
@@ -187,7 +187,7 @@ Polygon3d::Trim( const Plane3d& plPlane, bool bInVsOut, bool bOnEq, bool bOnCt)
    DBLVECTOR vDist ;
    vDist.reserve( m_vVert.capacity()) ;
    for ( auto& ptP : m_vVert) {
-      double dDist = ( ptP - ORIG) * plPlane.GetVersN() - plPlane.GetDist() ;
+      double dDist = DistPointPlane( ptP, plPlane) ;
       if ( abs( dDist) < EPS_SMALL)
          ++ nNbrOn ;
       else if ( dDist < 0)
diff --git a/SurfTriMeshCuts.cpp b/SurfTriMeshCuts.cpp
index c89cde6..8bfda97 100644
--- a/SurfTriMeshCuts.cpp
+++ b/SurfTriMeshCuts.cpp
@@ -70,14 +70,13 @@ SurfTriMesh::CutByTriangles( const Plane3d& plPlane, bool bSaveOnEq, bool& bModi
       return false ;
 
   // classifico i vertici rispetto al piano
-   double dTol = max( min( 0.5 * m_dLinTol, 10 * EPS_SMALL), EPS_SMALL) ;
    for ( int i = 0 ; i < GetVertexSize() ; ++ i) {
+     // salto i vertici cancellati
+      if ( m_vVert[i].nIdTria == SVT_DEL)
+         continue ;
       double dDist = DistPointPlane( m_vVert[i].ptP, plPlane) ;
-      if ( abs( dDist) < dTol) {
+      if ( abs( dDist) < EPS_SMALL)
          m_vVert[i].nTemp = 0 ;
-         if ( abs( dDist) > EPS_SMALL)
-            m_vVert[i].ptP -= plPlane.GetVersN() * dDist ;
-      }
       else if ( dDist > 0)
          m_vVert[i].nTemp = +1 ;
       else