From: jgv <jgv@opencascade.com>
Date: Wed, 14 Oct 2020 08:54:11 +0000 (+0300)
Subject: Fix of regression in Extrema, improvement in 3D offset.
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=a030834dea61956accc3813cea6a85baaea073f9;p=occt-copy.git

Fix of regression in Extrema, improvement in 3D offset.
---

diff --git a/src/BRepOffset/BRepOffset_Tool.cxx b/src/BRepOffset/BRepOffset_Tool.cxx
index 85519790a8..3768ac2fa4 100644
--- a/src/BRepOffset/BRepOffset_Tool.cxx
+++ b/src/BRepOffset/BRepOffset_Tool.cxx
@@ -3127,12 +3127,23 @@ Standard_Boolean BRepOffset_Tool::EnLargeFace
   }
   else
   {
-    Standard_Real FaceDU = UF2 - UF1;
-    Standard_Real FaceDV = VF2 - VF1;
-    UU1 = UF1 - 10*FaceDU;
-    UU2 = UF2 + 10*FaceDU;
-    VV1 = VF1 - 10*FaceDV;
-    VV2 = VF2 + 10*FaceDV;
+    if (theExtensionMode == 2)
+    {
+      Standard_Real FaceDU = UF2 - UF1;
+      Standard_Real FaceDV = VF2 - VF1;
+      UU1 = UF1 - 10*FaceDU;
+      UU2 = UF2 + 10*FaceDU;
+      VV1 = VF1 - 10*FaceDV;
+      VV2 = VF2 + 10*FaceDV;
+    }
+    else
+    {
+      Standard_Real aSize = theLenBeforeUfirst;
+      UU1 = UF1 - aSize;
+      UU2 = UF2 + aSize;
+      VV1 = VF1 - aSize;
+      VV2 = VF2 + aSize;
+    }
     coeff = 1.;
   }
   
diff --git a/src/Extrema/Extrema_GenExtCC.gxx b/src/Extrema/Extrema_GenExtCC.gxx
index 2c7767eca2..969a5b85ae 100644
--- a/src/Extrema/Extrema_GenExtCC.gxx
+++ b/src/Extrema/Extrema_GenExtCC.gxx
@@ -658,11 +658,6 @@ void Extrema_GenExtCC::Points(const Standard_Integer N,
                               POnC& P1,
                               POnC& P2) const
 {
-  if (IsParallel())
-  {
-    throw StdFail_InfiniteSolutions();
-  }
-
   if (N < 1 || N > NbExt())
   {
     throw Standard_OutOfRange();