1 // Created on: 2007-09-10 2 // Created by: Igor FEOKTISTOV 3 // Copyright (c) 2007-2014 OPEN CASCADE SAS 4 // 5 // This file is part of Open CASCADE Technology software library. 6 // 7 // This library is free software; you can redistribute it and/or modify it under 8 // the terms of the GNU Lesser General Public License version 2.1 as published 9 // by the Free Software Foundation, with special exception defined in the file 10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 11 // distribution for complete text of the license and disclaimer of any warranty. 12 // 13 // Alternatively, this file may be used under the terms of Open CASCADE 14 // commercial license or contractual agreement. 15 16 #ifndef _BRepLib_FuseEdges_HeaderFile 17 #define _BRepLib_FuseEdges_HeaderFile 18 19 #include <Standard.hxx> 20 #include <Standard_DefineAlloc.hxx> 21 #include <Standard_Handle.hxx> 22 23 #include <TopoDS_Shape.hxx> 24 #include <Standard_Boolean.hxx> 25 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx> 26 #include <TopTools_DataMapOfIntegerListOfShape.hxx> 27 #include <TopTools_DataMapOfIntegerShape.hxx> 28 #include <TopTools_DataMapOfShapeShape.hxx> 29 #include <Standard_Integer.hxx> 30 #include <TopTools_IndexedMapOfShape.hxx> 31 #include <TopAbs_ShapeEnum.hxx> 32 #include <TopTools_MapOfShape.hxx> 33 #include <TopTools_ListOfShape.hxx> 34 class Standard_ConstructionError; 35 class Standard_NullObject; 36 class TopoDS_Shape; 37 class TopoDS_Vertex; 38 class TopoDS_Edge; 39 40 41 //! This class can detect vertices in a face that can 42 //! be considered useless and then perform the fuse of 43 //! the edges and remove the useless vertices. By 44 //! useles vertices, we mean : 45 //! * vertices that have exactly two connex edges 46 //! * the edges connex to the vertex must have 47 //! exactly the same 2 connex faces . 48 //! * The edges connex to the vertex must have the 49 //! same geometric support. 50 class BRepLib_FuseEdges 51 { 52 public: 53 54 DEFINE_STANDARD_ALLOC 55 56 57 //! Initialise members and build construction of map 58 //! of ancestors. 59 Standard_EXPORT BRepLib_FuseEdges(const TopoDS_Shape& theShape, const Standard_Boolean PerformNow = Standard_False); 60 61 //! set edges to avoid being fused 62 Standard_EXPORT void AvoidEdges (const TopTools_IndexedMapOfShape& theMapEdg); 63 64 //! set mode to enable concatenation G1 BSpline edges in one 65 //! End Modified by IFV 19.04.07 66 Standard_EXPORT void SetConcatBSpl (const Standard_Boolean theConcatBSpl = Standard_True); 67 68 //! returns all the list of edges to be fused 69 //! each list of the map represent a set of connex edges 70 //! that can be fused. 71 Standard_EXPORT void Edges (TopTools_DataMapOfIntegerListOfShape& theMapLstEdg); 72 73 //! returns all the fused edges. each integer entry in 74 //! the map corresponds to the integer in the 75 //! DataMapOfIntegerListOfShape we get in method 76 //! Edges. That is to say, to the list of edges in 77 //! theMapLstEdg(i) corresponds the resulting edge theMapEdge(i) 78 Standard_EXPORT void ResultEdges (TopTools_DataMapOfIntegerShape& theMapEdg); 79 80 //! returns the map of modified faces. 81 Standard_EXPORT void Faces (TopTools_DataMapOfShapeShape& theMapFac); 82 83 //! returns myShape modified with the list of internal 84 //! edges removed from it. 85 Standard_EXPORT TopoDS_Shape& Shape(); 86 87 //! returns the number of vertices candidate to be removed 88 Standard_EXPORT Standard_Integer NbVertices(); 89 90 //! Using map of list of connex edges, fuse each list to 91 //! one edge and then update myShape 92 Standard_EXPORT void Perform(); 93 94 95 96 97 protected: 98 99 100 101 102 103 private: 104 105 //! Build the all the lists of edges that are to be fused 106 Standard_EXPORT void BuildListEdges(); 107 108 //! Build result fused edges according to the list 109 //! builtin BuildLisEdges 110 Standard_EXPORT void BuildListResultEdges(); 111 112 Standard_EXPORT void BuildListConnexEdge (const TopoDS_Shape& theEdge, TopTools_MapOfShape& theMapUniq, TopTools_ListOfShape& theLstEdg); 113 114 Standard_EXPORT Standard_Boolean NextConnexEdge (const TopoDS_Vertex& theVertex, const TopoDS_Shape& theEdge, TopoDS_Shape& theEdgeConnex) const; 115 116 Standard_EXPORT Standard_Boolean SameSupport (const TopoDS_Edge& E1, const TopoDS_Edge& E2) const; 117 118 Standard_EXPORT Standard_Boolean UpdatePCurve (const TopoDS_Edge& theOldEdge, TopoDS_Edge& theNewEdge, const TopTools_ListOfShape& theLstEdg) const; 119 120 121 TopoDS_Shape myShape; 122 Standard_Boolean myShapeDone; 123 Standard_Boolean myEdgesDone; 124 Standard_Boolean myResultEdgesDone; 125 TopTools_IndexedDataMapOfShapeListOfShape myMapVerLstEdg; 126 TopTools_IndexedDataMapOfShapeListOfShape myMapEdgLstFac; 127 TopTools_DataMapOfIntegerListOfShape myMapLstEdg; 128 TopTools_DataMapOfIntegerShape myMapEdg; 129 TopTools_DataMapOfShapeShape myMapFaces; 130 Standard_Integer myNbConnexEdge; 131 TopTools_IndexedMapOfShape myAvoidEdg; 132 Standard_Boolean myConcatBSpl; 133 134 135 }; 136 137 138 139 140 141 142 143 #endif // _BRepLib_FuseEdges_HeaderFile 144