work on #17497 - recursively cut shapes in a compound iindividually to work around OCCT limitation

src/Mod/Part/App/FCBRepAlgoAPI_BooleanOperation.cpp

@@ -30,7 +30,9 @@
 #include <BRepBndLib.hxx>
 #include <Bnd_Box.hxx>
 #include <BRepCheck_Analyzer.hxx>
+#include <BRep_Builder.hxx>
 #include <TopoDS_Shape.hxx>
+#include <TopoDS_Iterator.hxx>
 #include <Precision.hxx>
 #include <FuzzyHelper.h>
 
@@ -78,3 +80,33 @@ void FCBRepAlgoAPIHelper::setAutoFuzzy(BRepAlgoAPI_BuilderAlgo* op) {
         BRepBndLib::Add(it.Value(), bounds);
     op->SetFuzzyValue(Part::FuzzyHelper::getBooleanFuzzy() * sqrt(bounds.SquareExtent()) * Precision::Confusion());
 }
+
+void FCBRepAlgoAPI_BooleanOperation::Build(const Message_ProgressRange& theRange) {
+
+    if (myOperation==BOPAlgo_CUT && myArguments.Size()==1 && myArguments.First().ShapeType() == TopAbs_COMPOUND) {
+        myOriginalArguments = myArguments;
+        myShape = RecursiveCutCompound(myOriginalArguments.First(), theRange);
+    } else {
+        return BRepAlgoAPI_BooleanOperation::Build(theRange);
+    }
+
+}
+
+const TopoDS_Shape FCBRepAlgoAPI_BooleanOperation::RecursiveCutCompound(const TopoDS_Shape& theArgument, const Message_ProgressRange& theRange) {
+    BRep_Builder builder;
+    TopoDS_Compound comp;
+    builder.MakeCompound(comp);
+    TopoDS_Iterator it(theArgument);
+    for (; it.More(); it.Next()) {
+        TopTools_ListOfShape currentArguments;
+        currentArguments.Append(it.Value());
+        myArguments = currentArguments;
+        Build(theRange);
+        if (IsDone()) {
+            builder.Add(comp, myShape);
+        } else {
+            return TopoDS_Shape();
+        }
+    }
+    return comp;
+}

src/Mod/Part/App/FCBRepAlgoAPI_BooleanOperation.h

@@ -49,6 +49,8 @@ public:
     // set fuzzyness based on size
     void setAutoFuzzy();
 
+    Standard_EXPORT virtual void Build(const Message_ProgressRange& theRange = Message_ProgressRange()) Standard_OVERRIDE;
+
 protected: //! @name Constructors
 
   //! Constructor to perform Boolean operation on only two arguments.
@@ -57,5 +59,10 @@ protected: //! @name Constructors
                                                const TopoDS_Shape& theS2,
                                                const BOPAlgo_Operation theOperation);
 
+
+private:
+  TopTools_ListOfShape myOriginalArguments;
+  Standard_EXPORT const TopoDS_Shape RecursiveCutCompound(const TopoDS_Shape& theArgument, const Message_ProgressRange& theRange);
+
 };
 #endif