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133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
// Created on: 1993-01-21
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// Created by: Remi LEQUETTE
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// Copyright (c) 1993-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _BRepTools_WireExplorer_HeaderFile
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#define _BRepTools_WireExplorer_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <TopTools_DataMapOfShapeListOfShape.hxx>
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#include <TopoDS_Edge.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopTools_MapOfShape.hxx>
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#include <TopAbs_Orientation.hxx>
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class TopoDS_Wire;
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//! The WireExplorer is a tool to explore the edges of
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//! a wire in a connection order.
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//!
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//! i.e. each edge is connected to the previous one by
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//! its origin.
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//! If a wire is not closed returns only a segment of edges which
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//! length depends on started in exploration edge.
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//! Algorithm suggests that wire is valid and has no any defects, which
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//! can stop edge exploration. Such defects can be loops, wrong orientation of edges
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//! (two edges go in to shared vertex or go out from shared vertex), branching of edges,
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//! the presens of edges with INTERNAL or EXTERNAL orientation. If wire has
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//! such kind of defects WireExplorer can return not all
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//! edges in a wire. it depends on type of defect and position of starting edge.
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class BRepTools_WireExplorer
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Constructs an empty explorer (which can be initialized using Init)
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Standard_EXPORT BRepTools_WireExplorer();
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//! IInitializes an exploration of the wire <W>.
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Standard_EXPORT BRepTools_WireExplorer(const TopoDS_Wire& W);
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//! Initializes an exploration of the wire <W>.
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//! F is used to select the edge connected to the
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//! previous in the parametric representation of <F>.
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Standard_EXPORT BRepTools_WireExplorer(const TopoDS_Wire& W, const TopoDS_Face& F);
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//! Initializes an exploration of the wire <W>.
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Standard_EXPORT void Init (const TopoDS_Wire& W);
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//! Initializes an exploration of the wire <W>.
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//! F is used to select the edge connected to the
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//! previous in the parametric representation of <F>.
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Standard_EXPORT void Init (const TopoDS_Wire& W, const TopoDS_Face& F);
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//! Initializes an exploration of the wire <W>.
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//! F is used to select the edge connected to the
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//! previous in the parametric representation of <F>.
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//! <UMIn>, <UMax>, <VMin>, <VMax> - the UV bounds of the face <F>.
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Standard_EXPORT void Init(const TopoDS_Wire& W,
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const TopoDS_Face& F,
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const Standard_Real UMin,
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const Standard_Real UMax,
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const Standard_Real VMin,
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const Standard_Real VMax);
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//! Returns True if there is a current edge.
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Standard_EXPORT Standard_Boolean More() const;
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//! Proceeds to the next edge.
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Standard_EXPORT void Next();
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//! Returns the current edge.
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Standard_EXPORT const TopoDS_Edge& Current() const;
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//! Returns an Orientation for the current edge.
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Standard_EXPORT TopAbs_Orientation Orientation() const;
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//! Returns the vertex connecting the current edge to
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//! the previous one.
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Standard_EXPORT const TopoDS_Vertex& CurrentVertex() const;
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//! Clears the content of the explorer.
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Standard_EXPORT void Clear();
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protected:
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private:
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TopTools_DataMapOfShapeListOfShape myMap;
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TopoDS_Edge myEdge;
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TopoDS_Vertex myVertex;
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TopoDS_Face myFace;
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TopTools_MapOfShape myDoubles;
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Standard_Boolean myReverse;
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Standard_Real myTolU;
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Standard_Real myTolV;
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};
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#endif // _BRepTools_WireExplorer_HeaderFile
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