1 // Created on: 1998-11-26 2 // Created by: Jean-Michel BOULCOURT 3 // Copyright (c) 1998-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 8 // This library is free software; you can redistribute it and/or modify it under 9 // the terms of the GNU Lesser General Public License version 2.1 as published 10 // by the Free Software Foundation, with special exception defined in the file 11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 12 // distribution for complete text of the license and disclaimer of any warranty. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _TopOpeBRepTool_FuseEdges_HeaderFile 18 #define _TopOpeBRepTool_FuseEdges_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_DefineAlloc.hxx> 22 #include <Standard_Handle.hxx> 23 24 #include <TopoDS_Shape.hxx> 25 #include <Standard_Boolean.hxx> 26 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx> 27 #include <TopTools_DataMapOfIntegerListOfShape.hxx> 28 #include <TopTools_DataMapOfIntegerShape.hxx> 29 #include <TopTools_DataMapOfShapeShape.hxx> 30 #include <Standard_Integer.hxx> 31 #include <TopTools_IndexedMapOfShape.hxx> 32 #include <TopAbs_ShapeEnum.hxx> 33 #include <TopTools_MapOfShape.hxx> 34 #include <TopTools_ListOfShape.hxx> 35 class Standard_ConstructionError; 36 class Standard_NullObject; 37 class TopoDS_Shape; 38 class TopoDS_Vertex; 39 class TopoDS_Edge; 40 41 42 //! This class can detect vertices in a face that can 43 //! be considered useless and then perform the fuse of 44 //! the edges and remove the useless vertices. By 45 //! useles vertices, we mean : 46 //! * vertices that have exactly two connex edges 47 //! * the edges connex to the vertex must have 48 //! exactly the same 2 connex faces . 49 //! * The edges connex to the vertex must have the 50 //! same geometric support. 51 class TopOpeBRepTool_FuseEdges 52 { 53 public: 54 55 DEFINE_STANDARD_ALLOC 56 57 58 //! Initialise members and build construction of map 59 //! of ancestors. 60 Standard_EXPORT TopOpeBRepTool_FuseEdges(const TopoDS_Shape& theShape, const Standard_Boolean PerformNow = Standard_False); 61 62 //! set edges to avoid being fused 63 Standard_EXPORT void AvoidEdges (const TopTools_IndexedMapOfShape& theMapEdg); 64 65 //! returns all the list of edges to be fused 66 //! each list of the map represent a set of connex edges 67 //! that can be fused. 68 Standard_EXPORT void Edges (TopTools_DataMapOfIntegerListOfShape& theMapLstEdg); 69 70 //! returns all the fused edges. each integer entry in 71 //! the map corresponds to the integer in the 72 //! DataMapOfIntegerListOfShape we get in method 73 //! Edges. That is to say, to the list of edges in 74 //! theMapLstEdg(i) corresponds the resulting edge theMapEdge(i) 75 Standard_EXPORT void ResultEdges (TopTools_DataMapOfIntegerShape& theMapEdg); 76 77 //! returns the map of modified faces. 78 Standard_EXPORT void Faces (TopTools_DataMapOfShapeShape& theMapFac); 79 80 //! returns myShape modified with the list of internal 81 //! edges removed from it. 82 Standard_EXPORT TopoDS_Shape& Shape(); 83 84 //! returns the number of vertices candidate to be removed 85 Standard_EXPORT Standard_Integer NbVertices(); 86 87 //! Using map of list of connex edges, fuse each list to 88 //! one edge and then update myShape 89 Standard_EXPORT void Perform(); 90 91 92 93 94 protected: 95 96 97 98 99 100 private: 101 102 //! Build the all the lists of edges that are to be fused 103 Standard_EXPORT void BuildListEdges(); 104 105 //! Build result fused edges according to the list 106 //! builtin BuildLisEdges 107 Standard_EXPORT void BuildListResultEdges(); 108 109 Standard_EXPORT void BuildListConnexEdge (const TopoDS_Shape& theEdge, TopTools_MapOfShape& theMapUniq, TopTools_ListOfShape& theLstEdg); 110 111 Standard_EXPORT Standard_Boolean NextConnexEdge (const TopoDS_Vertex& theVertex, const TopoDS_Shape& theEdge, TopoDS_Shape& theEdgeConnex) const; 112 113 Standard_EXPORT Standard_Boolean SameSupport (const TopoDS_Edge& E1, const TopoDS_Edge& E2) const; 114 115 Standard_EXPORT Standard_Boolean UpdatePCurve (const TopoDS_Edge& theOldEdge, TopoDS_Edge& theNewEdge, const TopTools_ListOfShape& theLstEdg) const; 116 117 118 TopoDS_Shape myShape; 119 Standard_Boolean myShapeDone; 120 Standard_Boolean myEdgesDone; 121 Standard_Boolean myResultEdgesDone; 122 TopTools_IndexedDataMapOfShapeListOfShape myMapVerLstEdg; 123 TopTools_IndexedDataMapOfShapeListOfShape myMapEdgLstFac; 124 TopTools_DataMapOfIntegerListOfShape myMapLstEdg; 125 TopTools_DataMapOfIntegerShape myMapEdg; 126 TopTools_DataMapOfShapeShape myMapFaces; 127 Standard_Integer myNbConnexEdge; 128 TopTools_IndexedMapOfShape myAvoidEdg; 129 130 131 }; 132 133 134 135 136 137 138 139 #endif // _TopOpeBRepTool_FuseEdges_HeaderFile 140