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File indexing completed on 2026-09-28 09:19:37
0001 // Copyright (c) 2026 OPEN CASCADE SAS 0002 // 0003 // This file is part of Open CASCADE Technology software library. 0004 // 0005 // This library is free software; you can redistribute it and/or modify it under 0006 // the terms of the GNU Lesser General Public License version 2.1 as published 0007 // by the Free Software Foundation, with special exception defined in the file 0008 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 0009 // distribution for complete text of the license and disclaimer of any warranty. 0010 // 0011 // Alternatively, this file may be used under the terms of Open CASCADE 0012 // commercial license or contractual agreement. 0013 0014 #ifndef _BRepGraphInc_Reference_HeaderFile 0015 #define _BRepGraphInc_Reference_HeaderFile 0016 0017 #include <BRepGraphInc_ParityOrientation.hxx> 0018 #include <BRepGraph_NodeId.hxx> 0019 #include <BRepGraph_RefId.hxx> 0020 #include <TopLoc_Location.hxx> 0021 0022 //! @brief Managed reference entry structs for the incidence-table storage. 0023 //! 0024 //! Each reference entry extends BaseRef with representation fields describing 0025 //! how a child definition is used by its parent. 0026 //! Reference entries are stored in flat per-kind vectors in BRepGraphInc_Storage 0027 //! and support mutation tracking and soft-removal. 0028 //! Not every definition kind has a dedicated Ref kind by design: 0029 //! - CoEdge usage is stored directly on CoEdgeDef and ordered through WireRelations 0030 //! - Compound children use ChildRef (heterogeneous NodeId target) 0031 //! - Product children use OccurrenceRef (placement owned by OccurrenceDef) 0032 //! - CompSolid children use SolidRef 0033 //! 0034 //! For lightweight read-only projections without lifecycle fields, see 0035 //! BRepGraphInc_Instance.hxx (Instance structs carry only DefId + Orientation + Location). 0036 namespace BRepGraphInc 0037 { 0038 0039 //! Fields shared by every reference entry. 0040 struct BaseRef 0041 { 0042 using TypeId = BRepGraph_RefId; 0043 0044 //! Persistent per-kind UID counter value. 0045 //! 0 = invalid sentinel (not yet allocated). Valid UIDs start at 1. 0046 //! Kind is implicit from the concrete struct type (ShellRef, FaceRef, etc.). 0047 uint32_t UID = 0; 0048 }; 0049 0050 //! Shell reference storage entry. 0051 struct ShellRef : public BaseRef 0052 { 0053 using TypeId = BRepGraph_ShellRefId; 0054 0055 BRepGraph_SolidId ParentSolidId; //!< Parent solid identifier 0056 BRepGraph_ShellId ChildShellId; //!< Child shell identifier 0057 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0058 }; 0059 0060 //! Face reference storage entry. 0061 struct FaceRef : public BaseRef 0062 { 0063 using TypeId = BRepGraph_FaceRefId; 0064 0065 BRepGraph_ShellId ParentShellId; //!< Parent shell identifier 0066 BRepGraph_FaceId ChildFaceId; //!< Child face identifier 0067 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0068 }; 0069 0070 //! Wire reference storage entry. 0071 struct WireRef : public BaseRef 0072 { 0073 using TypeId = BRepGraph_WireRefId; 0074 0075 BRepGraph_FaceId ParentFaceId; //!< Parent face identifier 0076 BRepGraph_WireId ChildWireId; //!< Child wire identifier 0077 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0078 }; 0079 0080 //! Vertex reference storage entry. 0081 struct VertexRef : public BaseRef 0082 { 0083 using TypeId = BRepGraph_VertexRefId; 0084 0085 BRepGraph_VertexId ChildVertexId; //!< Child vertex identifier 0086 BRepGraph_EdgeId ParentEdgeId; //!< Edge that owns this vertex reference 0087 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0088 }; 0089 0090 //! Solid reference storage entry. 0091 struct SolidRef : public BaseRef 0092 { 0093 using TypeId = BRepGraph_SolidRefId; 0094 0095 BRepGraph_CompSolidId ParentCompSolidId; //!< Parent compsolid identifier 0096 BRepGraph_SolidId ChildSolidId; //!< Child solid identifier 0097 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0098 }; 0099 0100 //! Child reference storage entry. 0101 struct ChildRef : public BaseRef 0102 { 0103 using TypeId = BRepGraph_ChildRefId; 0104 0105 BRepGraph_CompoundId ParentCompoundId; //!< Parent compound identifier 0106 BRepGraph_NodeId ChildNodeId; //!< Child node identifier (heterogeneous) 0107 ParityOrientation Orientation = TopAbs_FORWARD; //!< Orientation within parent 0108 TopLoc_Location LocalLocation; //!< Location relative to parent 0109 }; 0110 0111 //! Occurrence reference storage entry. 0112 //! Like ChildRef but without Orientation - placement is a reference property. 0113 //! Structurally parallel to other ref types: definitions carry no location. 0114 struct OccurrenceRef : public BaseRef 0115 { 0116 using TypeId = BRepGraph_OccurrenceRefId; 0117 0118 BRepGraph_ProductId ParentProductId; 0119 BRepGraph_OccurrenceId ChildOccurrenceId; 0120 TopLoc_Location LocalLocation; //!< Placement relative to parent product 0121 }; 0122 0123 } // namespace BRepGraphInc 0124 0125 #endif // _BRepGraphInc_Reference_HeaderFile
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