TopoNaming/Part: transfer makeElementThickSolid

src/Mod/Part/App/TopoShape.h

@@ -194,6 +194,14 @@ enum class MapElement
     map
 };
 
+/// Defines how to fill the holes that may appear after offset two adjacent faces
+enum class JoinType
+{
+    Arc,
+    Tangent,
+    Intersection,
+};
+
 /** The representation for a CAD Shape
  */
 // NOLINTNEXTLINE cppcoreguidelines-special-member-functions
@@ -780,6 +788,53 @@ public:
     }
     //@}
 
+    /** Make a hollowed solid by removing some faces from a given solid
+     *
+     * @param source: input shape
+     * @param faces: list of faces to remove, must be sub shape of the input shape
+     * @param offset: thickness of the walls
+     * @param tol: tolerance criterion for coincidence in generated shapes
+     * @param intersection: whether to check intersection in all generated parallel.
+     * @param selfInter: whether to eliminate self intersection.
+     * @param offsetMode: defines the construction type of parallels applied to free edges
+     * @param join: join type. Only support JoinType::Arc and JoinType::Intersection.
+     * @param op: optional string to be encoded into topo naming for indicating
+     *            the operation
+     *
+     * @return The original content of this TopoShape is discarded and replaced
+     *         with the new shape. The function returns the TopoShape itself as
+     *         a self reference so that multiple operations can be carried out
+     *         for the same shape in the same line of code.
+     */
+    TopoShape &makeElementThickSolid(const TopoShape &source, const std::vector<TopoShape> &faces,
+                              double offset, double tol, bool intersection = false, bool selfInter = false,
+                              short offsetMode = 0, JoinType join = JoinType::Arc, const char *op=nullptr);
+
+    /** Make a hollowed solid by removing some faces from a given solid
+     *
+     * @param source: input shape
+     * @param faces: list of faces to remove, must be sub shape of the input shape
+     * @param offset: thickness of the walls
+     * @param tol: tolerance criterion for coincidence in generated shapes
+     * @param intersection: whether to check intersection in all generated parallel
+     *                      (OCCT document states the option is not fully implemented)
+     * @param selfInter: whether to eliminate self intersection
+     *                   (OCCT document states the option is not implemented)
+     * @param offsetMode: defines the construction type of parallels applied to free edges
+     *                    (OCCT document states the option is not implemented)
+     * @param join: join type. Only support JoinType::Arc and JoinType::Intersection.
+     * @param op: optional string to be encoded into topo naming for indicating
+     *            the operation
+     *
+     * @return Return the generated new shape. The TopoShape itself is not modified.
+     */
+    TopoShape makeElementThickSolid(const std::vector<TopoShape> &faces,
+                             double offset, double tol, bool intersection = false, bool selfInter = false,
+                             short offsetMode = 0, JoinType join = JoinType::Arc, const char *op=nullptr) const {
+        return TopoShape(0,Hasher).makeElementThickSolid(*this,faces,offset,tol,intersection,selfInter,
+                                                   offsetMode,join,op);
+    }
+
     /* Make a shell or solid by sweeping profile wire along a spine
      *
      * @params sources: source shapes. The first shape is used as spine. The

src/Mod/Part/App/TopoShapeExpansion.cpp

@@ -52,6 +52,7 @@
 #include <BRepLib.hxx>
 #include <BRepOffsetAPI_DraftAngle.hxx>
 #include <BRepOffsetAPI_MakePipe.hxx>
+#include <BRepOffsetAPI_MakeThickSolid.hxx>
 #include <BRepTools_WireExplorer.hxx>
 #include <ShapeUpgrade_ShellSewing.hxx>
 #include <TopTools_HSequenceOfShape.hxx>
@@ -2072,6 +2073,76 @@ TopoShape& TopoShape::makeElementPipeShell(const std::vector<TopoShape>& shapes,
     return makeElementShape(mkPipeShell, shapes, op);
 }
 
+TopoShape& TopoShape::makeElementThickSolid(const TopoShape& shape,
+                                            const std::vector<TopoShape>& faces,
+                                            double offset,
+                                            double tol,
+                                            bool intersection,
+                                            bool selfInter,
+                                            short offsetMode,
+                                            JoinType join,
+                                            const char* op)
+{
+    if (!op) {
+        op = Part::OpCodes::Thicken;
+    }
+
+    // we do not offer tangent join type
+    switch (join) {
+        case JoinType::Arc:
+        case JoinType::Intersection:
+            break;
+        default:
+            join = JoinType::Intersection;
+    }
+
+    if (shape.isNull()) {
+        FC_THROWM(NullShapeException, "Null shape");
+    }
+
+    if (faces.empty()) {
+        FC_THROWM(NullShapeException, "Null input shape");
+    }
+
+    if (fabs(offset) <= 2 * tol) {
+        *this = shape;
+        return *this;
+    }
+
+    TopTools_ListOfShape remFace;
+    for (auto& face : faces) {
+        if (face.isNull()) {
+            FC_THROWM(NullShapeException, "Null input shape");
+        }
+        if (!shape.findShape(face.getShape())) {
+            FC_THROWM(Base::CADKernelError, "face does not belong to the shape");
+        }
+        remFace.Append(face.getShape());
+    }
+#if OCC_VERSION_HEX < 0x070200
+    BRepOffsetAPI_MakeThickSolid mkThick(shape.getShape(),
+                                         remFace,
+                                         offset,
+                                         tol,
+                                         BRepOffset_Mode(offsetMode),
+                                         intersection ? Standard_True : Standard_False,
+                                         selfInter ? Standard_True : Standard_False,
+                                         GeomAbs_JoinType(join));
+#else
+    BRepOffsetAPI_MakeThickSolid mkThick;
+    mkThick.MakeThickSolidByJoin(shape.getShape(),
+                                 remFace,
+                                 offset,
+                                 tol,
+                                 BRepOffset_Mode(offsetMode),
+                                 intersection ? Standard_True : Standard_False,
+                                 selfInter ? Standard_True : Standard_False,
+                                 GeomAbs_JoinType(join));
+#endif
+    return makeElementShape(mkThick, shape, op);
+}
+
+
 TopoShape& TopoShape::makeElementWires(const std::vector<TopoShape>& shapes,
                                        const char* op,
                                        double tol,
@@ -2084,7 +2155,11 @@ TopoShape& TopoShape::makeElementWires(const std::vector<TopoShape>& shapes,
     if (shapes.size() == 1) {
         return makeElementWires(shapes[0], op, tol, policy, output);
     }
-    return makeElementWires(TopoShape(Tag).makeElementCompound(shapes), op, tol, policy, output);
+    return makeElementWires(TopoShape(Tag).makeElementCompound(shapes),
+                            op,
+                            tol,
+                            policy,
+                            output);
 }