From 39408dc0508e2c36f6dc8d89b6a42e9f818b4407 Mon Sep 17 00:00:00 2001
From: JGV <>
Date: Fri, 2 Dec 2011 14:40:23 +0000
Subject: [PATCH] 0022801: Boolean operations algorithm fails on two customer's
 shapes

---
 src/ApproxInt/ApproxInt_MultiLine.gxx | 14 +++++++++++++-
 src/IntTools/IntTools_Context.cxx     |  3 ++-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/ApproxInt/ApproxInt_MultiLine.gxx b/src/ApproxInt/ApproxInt_MultiLine.gxx
index cf35ed68df..6f268d1752 100755
--- a/src/ApproxInt/ApproxInt_MultiLine.gxx
+++ b/src/ApproxInt/ApproxInt_MultiLine.gxx
@@ -432,7 +432,7 @@ const {
   Standard_Real dsmin = ds*0.3;
   Standard_Real smax  = AC(High);
   
-  for(i=2,s=ds; (s<smax) ; i++,s+=ds) { 
+  for(i=2,s=ds; (s < smax && Indice <= High-1); i++,s+=ds) { 
     //----------------------------------------------------------
     //-- Recherche des indices des points                     --
     //-- Point           :    2       i       NbPnts-1        --
@@ -443,7 +443,13 @@ const {
       if(!HasBeenInserted) ResultPntOn2SLine->Add(myLine->Point(Indice));
       HasBeenInserted = Standard_False;
       Indice++;
+      if (Indice == High)
+        break;
     }
+    
+    if (Indice == High)
+      break;
+    
     if(!HasBeenInserted  && AC(Indice) <= s) { 
       ResultPntOn2SLine->Add(myLine->Point(Indice));
       HasBeenInserted = Standard_True;
@@ -485,7 +491,13 @@ const {
 	  //-- cout<<" Insertion du point :"<<Indice<<endl;
 	  HasBeenInserted = Standard_False;
 	  Indice++;
+          if (Indice == High)
+            break;
 	}
+    
+        if (Indice == High)
+          break;
+    
 	if(!HasBeenInserted  && AC(Indice) <= s) { 
 	  ResultPntOn2SLine->Add(myLine->Point(Indice));
 	  HasBeenInserted = Standard_True;
diff --git a/src/IntTools/IntTools_Context.cxx b/src/IntTools/IntTools_Context.cxx
index 710c60a1a9..6faa98fb01 100755
--- a/src/IntTools/IntTools_Context.cxx
+++ b/src/IntTools/IntTools_Context.cxx
@@ -140,7 +140,8 @@
   //
   anAdr=myProjPSMap.FindFromKey1(aF);
   if (!anAdr) {
-    Standard_Real Umin, Usup, Vmin, Vsup, anEpsT=1.e-12 ;
+    Standard_Real Umin, Usup, Vmin, Vsup;
+    Standard_Real anEpsT = Precision::PConfusion(); //1.e-12;
     BRepAdaptor_Surface aBAS;
     //
     const Handle(Geom_Surface)& aS=BRep_Tool::Surface(aF);