From d96660e6d1432d2ed5bed88a1cb8948ac1a95e0f Mon Sep 17 00:00:00 2001
From: Dario Sassi <dario.sassi@egalware.com>
Date: Mon, 22 Jan 2024 08:37:05 +0100
Subject: [PATCH] EgtGeomKernel : - correzione verifica collisione tra
 SurfTrimesh chiusa e Zmap.

---
 VolZmapCalculus.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/VolZmapCalculus.cpp b/VolZmapCalculus.cpp
index 9e7e8f6..cadc688 100644
--- a/VolZmapCalculus.cpp
+++ b/VolZmapCalculus.cpp
@@ -1930,9 +1930,12 @@ VolZmap::AvoidSurfTm( const ISurfTriMesh& tmSurf, double dSafeDist, bool bPrecis
                   }
                  // Intersezione della linea con triangolo eventualmente offsettato
                   Point3d ptInt, ptInt2 ;
-                  if ( IntersLineTria( ptT, vtK, 1, trNewTria, ptInt, ptInt2, false) != IntLineTriaType::ILTT_NO) {
+                  int nIntLnTr = IntersLineTria( ptT, vtK, 1, trNewTria, ptInt, ptInt2, false) ;
+                  if ( nIntLnTr != ILTT_NO) {
                      double dZmin = ( ptInt - ptT) * vtK ;
-                     double dZmax = ( ptInt2 - ptT) * vtK ;
+                     double dZmax = dZmin ;
+                     if ( nIntLnTr == ILTT_SEGM  ||  nIntLnTr == ILTT_SEGM_ON_EDGE)
+                        dZmax = ( ptInt2 - ptT) * vtK ;
                      for ( int nIndex = 0 ; nIndex < nSize ; nIndex += 1) {
                         if ( dZmax > m_Values[0][nPos][nIndex].dMin - EPS_SMALL  &&
                              dZmin < m_Values[0][nPos][nIndex].dMax + EPS_SMALL)