include/opencascade/BRepMAT2d_BisectingLocus.hxx

0001 // Created on: 1993-07-06
0002 // Created by: Yves FRICAUD
0003 // Copyright (c) 1993-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _BRepMAT2d_BisectingLocus_HeaderFile
0018 #define _BRepMAT2d_BisectingLocus_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <MAT2d_Tool2d.hxx>
0025 #include <MAT2d_DataMapOfBiIntInteger.hxx>
0026 #include <Standard_Integer.hxx>
0027 #include <MAT_Side.hxx>
0028 #include <GeomAbs_JoinType.hxx>
0029 #include <MAT_DataMapOfIntegerBasicElt.hxx>
0030 class MAT_Graph;
0031 class BRepMAT2d_Explorer;
0032 class MAT_BasicElt;
0033 class Geom2d_Geometry;
0034 class gp_Pnt2d;
0035 class MAT_Node;
0036 class Bisector_Bisec;
0037 class MAT_Arc;
0038
0039
0040 //! BisectingLocus generates and contains the Bisecting_Locus
0041 //! of a set of lines from Geom2d, defined by <ExploSet>.
0042 //!
0043 //! If the set of lines contains closed lines:
0044 //! ------------------------------------------
0045 //! These lines cut the plane  in areas.
0046 //! One map can  be  computed for each area.
0047 //!
0048 //! Bisecting locus computes a map in an area.
0049 //! The area is defined by a side (MAT_Left,MAT_Right)
0050 //! on one of the closed lines.
0051 //!
0052 //! If the set of lines contains only open lines:
0053 //! --------------------------------------------
0054 //! the map recovers all the plane.
0055 //!
0056 //! Warning: Assume the orientation of the   closed  lines  are
0057 //! compatible.
0058 //!
0059 //! Assume the explo contains only lines located in the
0060 //! area where the bisecting locus will be computed.
0061 //!
0062 //! Assume a line don't cross itself or an other line.
0063 //!
0064 //! Remark:
0065 //! the  curves  coming   from   the  explorer can   be
0066 //! decomposed in different parts. It  the  case for the
0067 //! curves other than circles or lines.
0068 //!
0069 //! The map of bisecting  locus is described by a graph.
0070 //! - The  BasicsElements  correspond  to elements on
0071 //! the figure described by the Explorer from BRepMAT2d.
0072 //! - The Arcs correspond to the bisectors.
0073 //! - The Nodes are the extremities of the arcs.
0074 class BRepMAT2d_BisectingLocus
0075 {
0076 public:
0077
0078   DEFINE_STANDARD_ALLOC
0079
0080
0081   Standard_EXPORT BRepMAT2d_BisectingLocus();
0082
0083   //! Computation of the Bisector_Locus in a set of Lines
0084   //! defined in <anExplo>.
0085   //! The bisecting locus are computed on the side <aSide>
0086   //! from the line <LineIndex> in <anExplo>.
0087   Standard_EXPORT void Compute (BRepMAT2d_Explorer& anExplo, const Standard_Integer LineIndex = 1, const MAT_Side aSide = MAT_Left, const GeomAbs_JoinType aJoinType = GeomAbs_Arc, const Standard_Boolean IsOpenResult = Standard_False);
0088
0089   //! Returns True if Compute has succeeded.
0090   Standard_EXPORT Standard_Boolean IsDone() const;
0091
0092   //! Returns <theGraph> of <me>.
0093   Standard_EXPORT Handle(MAT_Graph) Graph() const;
0094
0095   //! Returns the number of contours.
0096   Standard_EXPORT Standard_Integer NumberOfContours() const;
0097
0098   //! Returns the number of BasicElts on the line
0099   //! <IndLine>.
0100   Standard_EXPORT Standard_Integer NumberOfElts (const Standard_Integer IndLine) const;
0101
0102   //! Returns the number of sections of a curve.
0103   //! this curve is the Indexth curve in the IndLineth contour
0104   //! given by anExplo.
0105   Standard_EXPORT Standard_Integer NumberOfSections (const Standard_Integer IndLine, const Standard_Integer Index) const;
0106
0107   //! Returns the BasicElts located at the position
0108   //! <Index> on the contour designed by <IndLine>.
0109   //! Remark: the BasicElts on a contour are sorted.
0110   Standard_EXPORT Handle(MAT_BasicElt) BasicElt (const Standard_Integer IndLine, const Standard_Integer Index) const;
0111
0112   //! Returns the geometry linked to the <BasicElt>.
0113   Standard_EXPORT Handle(Geom2d_Geometry) GeomElt (const Handle(MAT_BasicElt)& aBasicElt) const;
0114
0115   //! Returns the geometry of  type <gp> linked to
0116   //! the <Node>.
0117   Standard_EXPORT gp_Pnt2d GeomElt (const Handle(MAT_Node)& aNode) const;
0118
0119   //! Returns the  geometry of type <Bissec>
0120   //! linked   to the arc <ARC>.
0121   //! <Reverse> is False when the FirstNode of <anArc>
0122   //! correspond to the first point of geometry.
0123   Standard_EXPORT Bisector_Bisec GeomBis (const Handle(MAT_Arc)& anArc, Standard_Boolean& Reverse) const;
0124
0125
0126
0127
0128 protected:
0129
0130
0131
0132
0133
0134 private:
0135
0136
0137   Standard_EXPORT void Fusion();
0138
0139   Standard_EXPORT void RenumerationAndFusion (const Standard_Integer IndexLine, const Standard_Integer LengthLine, Standard_Integer& IndexLast, MAT_DataMapOfIntegerBasicElt& NewMap);
0140
0141
0142   Handle(MAT_Graph) theGraph;
0143   MAT2d_Tool2d theTool;
0144   Standard_Boolean isDone;
0145   MAT2d_DataMapOfBiIntInteger nbSect;
0146   Standard_Integer nbContours;
0147
0148
0149 };
0150
0151
0152
0153
0154
0155
0156
0157 #endif // _BRepMAT2d_BisectingLocus_HeaderFile