From c56e573ae3a98ce2d0aef3fa774d7fd421ec5cac Mon Sep 17 00:00:00 2001
From: LorenzoM <lorenzo.mangia@egalware.com>
Date: Tue, 27 Apr 2021 15:26:49 +0200
Subject: [PATCH] Miglioramento gestione facce complanari

---
 SurfTriMeshBooleans.cpp | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/SurfTriMeshBooleans.cpp b/SurfTriMeshBooleans.cpp
index 74dfe23..a646862 100644
--- a/SurfTriMeshBooleans.cpp
+++ b/SurfTriMeshBooleans.cpp
@@ -4548,7 +4548,7 @@ SurfTriMesh::ItersectTriMeshFacets( SurfTriMesh& Other)
                         Point3d ptCentroidA, ptCentroidB ;
                         RegionA.GetCentroid( ptCentroidA) ;
                         RegionB.GetCentroid( ptCentroidB) ;
-                        if ( AreSameVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
+                        if ( AreSameOrOppositeVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
                              abs( ( ptCentroidB - ptCentroidA) * plPlaneA.GetVersN()) < EPS_SMALL) {
                            BBox3d b3Box, b3BoxB;
                            RegionA.GetLocalBBox(b3Box);
@@ -4607,7 +4607,7 @@ SurfTriMesh::ItersectTriMeshFacets( SurfTriMesh& Other)
                      Point3d ptCentroidA, ptCentroidB ;
                      RegionA.GetCentroid( ptCentroidA) ;
                      RegionB.GetCentroid( ptCentroidB) ;
-                     if (AreSameVectorApprox(plPlaneA.GetVersN(), plPlaneB.GetVersN()) &&
+                     if ( AreSameOrOppositeVectorApprox(plPlaneA.GetVersN(), plPlaneB.GetVersN()) &&
                         abs((ptCentroidB - ptCentroidA) * plPlaneA.GetVersN()) < EPS_SMALL) {
                         BBox3d b3Box, b3BoxB;
                         RegionA.GetLocalBBox(b3Box);
@@ -4670,6 +4670,10 @@ SurfTriMesh::ItersectTriMeshFacets( SurfTriMesh& Other)
             auto itFacetB = NewFacetB.find( nFB) ;
             // Faccia B divisa in pezzi
             if ( itFacetB != NewFacetB.end()) {
+               ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+               if (nFB == 1)
+                  int a = 0;
+               ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
                for ( int nPieceNumB = 0 ; nPieceNumB < int( itFacetB->second.size()) ; ++ nPieceNumB) {
                   POLYLINEVECTOR& vPieceLoopsVecB = itFacetB->second[nPieceNumB].vPieceLoop ;
                   PtrOwner<SurfFlatRegion> pRegB( GetBasicSurfFlatRegion( GetSurfFlatRegionFromPolyLineVector( vPieceLoopsVecB))) ;
@@ -4701,7 +4705,7 @@ SurfTriMesh::ItersectTriMeshFacets( SurfTriMesh& Other)
                      Point3d ptCentroidA, ptCentroidB ;
                      RegionA.GetCentroid( ptCentroidA) ;
                      RegionB.GetCentroid( ptCentroidB) ;
-                     if ( AreSameVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
+                     if ( AreSameOrOppositeVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
                           abs( ( ptCentroidB - ptCentroidA) * plPlaneA.GetVersN()) < EPS_SMALL) {
                         BBox3d b3Box, b3BoxB ;
                         RegionA.GetLocalBBox( b3Box) ;
@@ -4766,9 +4770,7 @@ SurfTriMesh::ItersectTriMeshFacets( SurfTriMesh& Other)
                   Point3d ptCentroidA, ptCentroidB ;
                   RegionA.GetCentroid( ptCentroidA) ;
                   RegionB.GetCentroid( ptCentroidB) ;
-                  bool bVecOk = AreSameVectorApprox(plPlaneA.GetVersN(), plPlaneB.GetVersN());
-                  double dOk = abs((ptCentroidB - ptCentroidA) * plPlaneA.GetVersN());
-                  if ( AreSameVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
+                  if ( AreSameOrOppositeVectorApprox( plPlaneA.GetVersN(), plPlaneB.GetVersN())  &&
                      abs( ( ptCentroidB - ptCentroidA) * plPlaneA.GetVersN()) < EPS_SMALL) {
                      BBox3d b3Box, b3BoxB;
                      RegionA.GetLocalBBox(b3Box);