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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
// Created on: 1995-09-08
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// Created by: Christophe MARION
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// Copyright (c) 1995-1999 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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#include <BRepExtrema_Poly.hxx>
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#include <BRep_Tool.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS.hxx>
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#include <TopExp_Explorer.hxx>
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#include <Precision.hxx>
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#include <Poly_Triangulation.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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//=======================================================================
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//function : Distance
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//purpose :
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//=======================================================================
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Standard_Boolean BRepExtrema_Poly::Distance (const TopoDS_Shape& S1, const TopoDS_Shape& S2,
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gp_Pnt& P1, gp_Pnt& P2, Standard_Real& dist)
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{
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dist = Precision::Infinite();
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TopLoc_Location L;
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Handle(Poly_Triangulation) Tr;
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TopExp_Explorer exFace;
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Standard_Integer nbn1 = 0;
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for (exFace.Init(S1, TopAbs_FACE);
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exFace.More();
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exFace.Next())
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{
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const TopoDS_Face& F = TopoDS::Face(exFace.Current());
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Tr = BRep_Tool::Triangulation(F,L);
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if (!Tr.IsNull())
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nbn1 += Tr->NbNodes();
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}
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if (nbn1 == 0) return Standard_False;
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Standard_Integer nbn2 = 0;
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for (exFace.Init(S2, TopAbs_FACE);
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exFace.More();
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exFace.Next())
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{
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const TopoDS_Face& F = TopoDS::Face(exFace.Current());
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Tr = BRep_Tool::Triangulation(F,L);
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if (!Tr.IsNull())
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nbn2 += Tr->NbNodes();
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}
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if (nbn2 == 0) return Standard_False;
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Standard_Integer i,n;
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TColgp_Array1OfPnt TP1(1,nbn1);
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nbn1 = 0;
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for (exFace.Init(S1, TopAbs_FACE);
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exFace.More();
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exFace.Next())
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{
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const TopoDS_Face& F = TopoDS::Face(exFace.Current());
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Tr = BRep_Tool::Triangulation(F,L);
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if (!Tr.IsNull())
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{
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const TColgp_Array1OfPnt& Nod = Tr->Nodes();
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n = Tr->NbNodes();
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for (i = 1; i <= n; i++)
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{
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nbn1++;
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TP1.SetValue(nbn1,Nod(i).Transformed(L));
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}
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}
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}
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TColgp_Array1OfPnt TP2(1,nbn2);
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nbn2 = 0;
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for (exFace.Init(S2, TopAbs_FACE);
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exFace.More();
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exFace.Next())
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{
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const TopoDS_Face& F = TopoDS::Face(exFace.Current());
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Tr = BRep_Tool::Triangulation(F,L);
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if (!Tr.IsNull())
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{
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const TColgp_Array1OfPnt& Nod = Tr->Nodes();
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n = Tr->NbNodes();
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for (i = 1; i <= n; i++)
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{
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nbn2++;
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TP2.SetValue(nbn2,Nod(i).Transformed(L));
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}
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}
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}
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Standard_Integer i1,i2;
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for (i1 = 1; i1 <= nbn1; i1++)
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{
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const gp_Pnt& PP1 = TP1(i1);
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for (i2 = 1; i2 <= nbn2; i2++)
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{
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const gp_Pnt& PP2 = TP2(i2);
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const Standard_Real dCur = PP1.Distance(PP2);
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if (dist > dCur)
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{
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P1 = PP1;
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P2 = PP2;
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dist = dCur;
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}
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}
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}
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return Standard_True;
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}
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