From 18c678759eafb95646a369f2837ea15a09961b3e Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Mon, 6 Dec 2021 22:23:24 +0300
Subject: [PATCH] 0032717: Modeling Algorithms - BRepBuilderAPI_Copy should not
 remove triangulation from surface-less faces

BRepBuilderAPI_Copy now ignores toCopyMesh flag for non-geometric shapes.
---
 src/BRepBuilderAPI/BRepBuilderAPI_Copy.cxx | 15 ++++++++++++---
 tests/bugs/modalg_7/bug32717               | 17 +++++++++++++++++
 2 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 tests/bugs/modalg_7/bug32717

diff --git a/src/BRepBuilderAPI/BRepBuilderAPI_Copy.cxx b/src/BRepBuilderAPI/BRepBuilderAPI_Copy.cxx
index 3bd8ce0eb0..36c25a41e5 100644
--- a/src/BRepBuilderAPI/BRepBuilderAPI_Copy.cxx
+++ b/src/BRepBuilderAPI/BRepBuilderAPI_Copy.cxx
@@ -59,8 +59,11 @@ public:
   //! copies it if required
   Standard_Boolean NewTriangulation(const TopoDS_Face& F, Handle(Poly_Triangulation)& T) Standard_OVERRIDE
   {
-    if (!myCopyMesh)
+    if (!myCopyMesh
+      && BRep_Tool::IsGeometric (F))
+    {
       return Standard_False;
+    }
 
     TopLoc_Location L;
     T = BRep_Tool::Triangulation(F, L);
@@ -93,8 +96,11 @@ public:
   //! copies it if required
   Standard_Boolean NewPolygon(const TopoDS_Edge& E, Handle(Poly_Polygon3D)& P) Standard_OVERRIDE
   {
-    if (!myCopyMesh)
+    if (!myCopyMesh
+      && BRep_Tool::IsGeometric (E))
+    {
       return Standard_False;
+    }
 
     TopLoc_Location aLoc;
     P = BRep_Tool::Polygon3D(E, aLoc);
@@ -113,8 +119,11 @@ public:
   Standard_Boolean NewPolygonOnTriangulation(const TopoDS_Edge& E, const TopoDS_Face& F,
                                              Handle(Poly_PolygonOnTriangulation)& P) Standard_OVERRIDE
   {
-    if (!myCopyMesh)
+    if (!myCopyMesh
+      && BRep_Tool::IsGeometric (E))
+    {
       return Standard_False;
+    }
 
     TopLoc_Location aLoc;
     Handle(Poly_Triangulation) aTria = BRep_Tool::Triangulation(F, aLoc);
diff --git a/tests/bugs/modalg_7/bug32717 b/tests/bugs/modalg_7/bug32717
new file mode 100644
index 0000000000..6c91e34bd7
--- /dev/null
+++ b/tests/bugs/modalg_7/bug32717
@@ -0,0 +1,17 @@
+puts "================================================="
+puts "0032717: Modeling Algorithms - BRepBuilderAPI_Copy should not remove triangulation from surface-less faces"
+puts "================================================="
+puts ""
+
+pload XDE MODELING
+box b 1 2 3
+incmesh b 1
+checktrinfo b -tri 12 -nod 24
+tclean -geom b
+trinfo b
+checktrinfo b -tri 12 -nod 24
+
+# check that copied triangulation-only shape is copied with triangulation
+tcopy b bb
+trinfo bb
+checktrinfo bb -tri 12 -nod 24