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1 | // Created on: 2016-04-07 |
2 | // Copyright (c) 2016 OPEN CASCADE SAS |
3 | // Created by: Oleg AGASHIN |
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 | #include <IMeshTools_ShapeExplorer.hxx> |
17 | #include <TopExp.hxx> |
18 | #include <TopExp_Explorer.hxx> |
19 | #include <TopoDS.hxx> |
20 | #include <TopoDS_Face.hxx> |
21 | #include <TopoDS_Edge.hxx> |
22 | #include <TopTools_ListOfShape.hxx> |
23 | #include <BRepLib.hxx> |
24 | #include <BRep_Tool.hxx> |
25 | #include <TopTools_MapOfShape.hxx> |
26 | #include <Geom_Surface.hxx> |
27 | |
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28 | namespace |
29 | { |
30 | //======================================================================= |
31 | // Function: visitEdges |
32 | // Purpose : Explodes the given shape on edges according to the specified |
33 | // criteria and visits each one in order to add it to data model. |
34 | //======================================================================= |
35 | void visitEdges (const Handle (IMeshTools_ShapeVisitor)& theVisitor, |
36 | const TopoDS_Shape& theShape, |
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37 | const Standard_Boolean isResetLocation, |
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38 | const TopAbs_ShapeEnum theToFind, |
39 | const TopAbs_ShapeEnum theToAvoid = TopAbs_SHAPE) |
40 | { |
41 | TopExp_Explorer aEdgesIt (theShape, theToFind, theToAvoid); |
42 | for (; aEdgesIt.More (); aEdgesIt.Next ()) |
43 | { |
44 | const TopoDS_Edge& aEdge = TopoDS::Edge (aEdgesIt.Current ()); |
45 | if (!BRep_Tool::IsGeometric (aEdge)) |
46 | { |
47 | continue; |
48 | } |
49 | |
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50 | theVisitor->Visit (isResetLocation ? |
51 | TopoDS::Edge (aEdge.Located (TopLoc_Location ())) : |
52 | aEdge); |
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53 | } |
54 | } |
55 | } |
56 | |
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57 | //======================================================================= |
58 | // Function: Constructor |
59 | // Purpose : |
60 | //======================================================================= |
61 | IMeshTools_ShapeExplorer::IMeshTools_ShapeExplorer ( |
62 | const TopoDS_Shape& theShape) |
63 | : IMeshData_Shape (theShape) |
64 | { |
65 | } |
66 | |
67 | //======================================================================= |
68 | // Function: Destructor |
69 | // Purpose : |
70 | //======================================================================= |
71 | IMeshTools_ShapeExplorer::~IMeshTools_ShapeExplorer () |
72 | { |
73 | } |
74 | |
75 | //======================================================================= |
76 | // Function: Accept |
77 | // Purpose : |
78 | //======================================================================= |
79 | void IMeshTools_ShapeExplorer::Accept ( |
80 | const Handle (IMeshTools_ShapeVisitor)& theVisitor) |
81 | { |
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82 | // Explore all free edges in shape. |
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83 | visitEdges (theVisitor, GetShape (), Standard_True, TopAbs_EDGE, TopAbs_FACE); |
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84 | |
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85 | // Explore all related to some face edges in shape. |
86 | // make array of faces suitable for processing (excluding faces without surface) |
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87 | TopTools_ListOfShape aFaceList; |
88 | BRepLib::ReverseSortFaces (GetShape (), aFaceList); |
89 | TopTools_MapOfShape aFaceMap; |
90 | |
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91 | const TopLoc_Location aEmptyLoc; |
92 | TopTools_ListIteratorOfListOfShape aFaceIter (aFaceList); |
93 | for (; aFaceIter.More (); aFaceIter.Next ()) |
94 | { |
95 | TopoDS_Shape aFaceNoLoc = aFaceIter.Value (); |
96 | aFaceNoLoc.Location (aEmptyLoc); |
97 | if (!aFaceMap.Add(aFaceNoLoc)) |
98 | { |
99 | continue; // already processed |
100 | } |
101 | |
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102 | const TopoDS_Face& aFace = TopoDS::Face (aFaceIter.Value ()); |
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103 | if (!BRep_Tool::IsGeometric (aFace)) |
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104 | { |
105 | continue; |
106 | } |
107 | |
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108 | // Explore all edges in face. |
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109 | visitEdges (theVisitor, aFace, Standard_False, TopAbs_EDGE); |
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110 | |
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111 | // Store only forward faces in order to prevent inverse issue. |
112 | theVisitor->Visit (TopoDS::Face (aFace.Oriented (TopAbs_FORWARD))); |
113 | } |
114 | } |