0031558: BRepOffsetAPI_MakeFilling algorithm makes turned inside out face

1. Modification in method BRepFill_Filling::Build - correction of building the wire.
2. Create new subgroup "filling" in the group "bugs".

src/BRepFill/BRepFill_Filling.cxx

@@ -721,6 +721,7 @@ void BRepFill_Filling::Build()
       gp_Pnt aPnt = BRep_Tool::Pnt(V1);
       NewV1 = BRepLib_MakeVertex(aPnt);
       BB.UpdateVertex(NewV1, dmax);
+      myOldNewMap.Bind(V1.Oriented(TopAbs_FORWARD), NewV1);
     }
 
     if (myOldNewMap.IsBound(V2))
@@ -730,6 +731,7 @@ void BRepFill_Filling::Build()
       gp_Pnt aPnt = BRep_Tool::Pnt(V2);
       NewV2 = BRepLib_MakeVertex(aPnt);
       BB.UpdateVertex(NewV2, dmax);
+      myOldNewMap.Bind(V2.Oriented(TopAbs_FORWARD), NewV2);
     }
 
     NewV1.Orientation(TopAbs_FORWARD);
@@ -742,9 +744,6 @@ void BRepFill_Filling::Build()
     BRepLib::SameParameter(NewEdge, dmax, Standard_True);
     FinalEdges.Append(NewEdge);
     myOldNewMap.Bind(InitEdge.Oriented(TopAbs_FORWARD), NewEdge.Oriented(TopAbs_FORWARD));
-    myOldNewMap.Bind(V1.Oriented(TopAbs_FORWARD), NewV1.Oriented(TopAbs_FORWARD));
-    if (!V1.IsSame(V2))
-      myOldNewMap.Bind(V2.Oriented(TopAbs_FORWARD), NewV2.Oriented(TopAbs_FORWARD));
   }
   
   TopoDS_Wire FinalWire = WireFromList(FinalEdges);

tests/bugs/filling/begin

@@ -0,0 +1,4 @@
+set subgroup filling
+
+
+

tests/bugs/filling/bug31558

@@ -0,0 +1,29 @@
+puts "=========================================================================="
+puts "OCC31558: BRepOffsetAPI_MakeFilling algorithm makes turned inside out face"
+puts "=========================================================================="
+puts ""
+
+brestore [locate_data_file bug31558.brep] a
+
+explode a e
+
+filling result 1 0 9  a_2 0  3.5000410449283663 0.62831853071795896 a 1  3.5000410449283663 1.2566370614359179 a 1  3.5000410449283663 1.8849555921538768 a 1  3.5000410449283663 2.5132741228718358 a 1  3.5000410449283663 3.1415926535897949 a 1  3.5000410449283663 3.7699111843077535 a 1  3.5000410449283663 4.3982297150257130 a 1  3.5000410449283663 5.0265482457436717 a 1  3.5000410449283663 5.6548667764616303 a 1
+
+checkshape result
+
+checknbshapes result -face 1 -wire 1 -edge 1 -vertex 1
+
+set tolres [checkmaxtol result]
+
+if { ${tolres} > 2.e-5} {
+   puts "Error: bad tolerance of result"
+}
+
+checkprops result -s 153.938
+
+smallview
+isos result 10
+donly result
+fit
+
+checkview -screenshot -2d -path ${imagedir}/${test_image}.png

tests/bugs/grids.list

@@ -20,3 +20,4 @@
 020 stlvrml
 021 splitshape
 022 splitshape_1
+023 filling