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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 | |
| 28 | //======================================================================= |
| 29 | // Function: Constructor |
| 30 | // Purpose : |
| 31 | //======================================================================= |
| 32 | IMeshTools_ShapeExplorer::IMeshTools_ShapeExplorer ( |
| 33 | const TopoDS_Shape& theShape) |
| 34 | : IMeshData_Shape (theShape) |
| 35 | { |
| 36 | } |
| 37 | |
| 38 | //======================================================================= |
| 39 | // Function: Destructor |
| 40 | // Purpose : |
| 41 | //======================================================================= |
| 42 | IMeshTools_ShapeExplorer::~IMeshTools_ShapeExplorer () |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | //======================================================================= |
| 47 | // Function: Accept |
| 48 | // Purpose : |
| 49 | //======================================================================= |
| 50 | void IMeshTools_ShapeExplorer::Accept ( |
| 51 | const Handle (IMeshTools_ShapeVisitor)& theVisitor) |
| 52 | { |
| 53 | // Explore all edges in shape - either free or related to some face. |
| 54 | TopTools_IndexedMapOfShape aEdges; |
| 55 | TopExp::MapShapes (GetShape (), TopAbs_EDGE, aEdges); |
| 56 | |
| 57 | TopTools_IndexedMapOfShape::Iterator aEdgeIt (aEdges); |
| 58 | for (; aEdgeIt.More (); aEdgeIt.Next ()) |
| 59 | { |
| 60 | const TopoDS_Edge& aEdge = TopoDS::Edge (aEdgeIt.Value ()); |
| 61 | if (!BRep_Tool::IsGeometric(aEdge)) |
| 62 | { |
| 63 | continue; |
| 64 | } |
| 65 | |
| 66 | theVisitor->Visit (aEdge); |
| 67 | } |
| 68 | |
| 69 | // Explore faces |
| 70 | TopTools_ListOfShape aFaceList; |
| 71 | BRepLib::ReverseSortFaces (GetShape (), aFaceList); |
| 72 | TopTools_MapOfShape aFaceMap; |
| 73 | |
| 74 | // make array of faces suitable for processing (excluding faces without surface) |
| 75 | TopLoc_Location aDummyLoc; |
| 76 | const TopLoc_Location aEmptyLoc; |
| 77 | TopTools_ListIteratorOfListOfShape aFaceIter (aFaceList); |
| 78 | for (; aFaceIter.More (); aFaceIter.Next ()) |
| 79 | { |
| 80 | TopoDS_Shape aFaceNoLoc = aFaceIter.Value (); |
| 81 | aFaceNoLoc.Location (aEmptyLoc); |
| 82 | if (!aFaceMap.Add(aFaceNoLoc)) |
| 83 | { |
| 84 | continue; // already processed |
| 85 | } |
| 86 | |
| 87 | TopoDS_Face aFace = TopoDS::Face (aFaceIter.Value ()); |
| 88 | const Handle (Geom_Surface)& aSurf = BRep_Tool::Surface (aFace, aDummyLoc); |
| 89 | if (aSurf.IsNull()) |
| 90 | { |
| 91 | continue; |
| 92 | } |
| 93 | |
| 94 | // Store only forward faces in order to prevent inverse issue. |
| 95 | theVisitor->Visit (TopoDS::Face (aFace.Oriented (TopAbs_FORWARD))); |
| 96 | } |
| 97 | } |
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