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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.
507 lines
12 KiB
C++
507 lines
12 KiB
C++
// Created on: 1994-03-18
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// Created by: Bruno DUMORTIER
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// Copyright (c) 1994-1999 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 <GeomAPI_ExtremaCurveCurve.ixx>
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#include <GeomAdaptor_Curve.hxx>
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//#include <Extrema_POnCurv.hxx>
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#include <Precision.hxx>
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#include <GeomAPI_ProjectPointOnCurve.hxx>
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//=======================================================================
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//function : GeomAPI_ExtremaCurveCurve
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveCurve::GeomAPI_ExtremaCurveCurve()
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{
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myIsDone = Standard_False;
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myTotalExt = Standard_False;
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}
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//=======================================================================
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//function : GeomAPI_ExtremaCurveCurve
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveCurve::GeomAPI_ExtremaCurveCurve
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(const Handle(Geom_Curve)& C1,
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const Handle(Geom_Curve)& C2)
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{
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Init(C1,C2);
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}
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//=======================================================================
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//function : GeomAPI_ExtremaCurveCurve
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveCurve::GeomAPI_ExtremaCurveCurve
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(const Handle(Geom_Curve)& C1,
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const Handle(Geom_Curve)& C2,
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const Standard_Real U1min,
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const Standard_Real U1max,
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const Standard_Real U2min,
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const Standard_Real U2max)
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{
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Init(C1,C2,U1min,U1max,U2min,U2max);
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::Init
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(const Handle(Geom_Curve)& C1,
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const Handle(Geom_Curve)& C2)
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{
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myTotalExt = Standard_False;
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Standard_Real Tol = Precision::PConfusion();
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myC1.Load(C1);
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myC2.Load(C2);
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Extrema_ExtCC theExtCC(myC1, myC2, Tol,Tol);
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myExtCC = theExtCC;
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myIsDone = myExtCC.IsDone() && ( myExtCC.NbExt() > 0);
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if ( myIsDone) {
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// evaluate the lower distance and its index;
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Standard_Real Dist2, Dist2Min = myExtCC.SquareDistance(1);
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myIndex = 1;
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for ( Standard_Integer i = 2; i <= myExtCC.NbExt(); i++) {
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Dist2 = myExtCC.SquareDistance(i);
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if ( Dist2 < Dist2Min) {
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Dist2Min = Dist2;
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myIndex = i;
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}
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}
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}
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::Init
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(const Handle(Geom_Curve)& C1,
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const Handle(Geom_Curve)& C2,
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const Standard_Real U1min,
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const Standard_Real U1max,
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const Standard_Real U2min,
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const Standard_Real U2max)
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{
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myTotalExt = Standard_False;
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Standard_Real Tol = Precision::PConfusion();
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myC1.Load(C1);
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myC2.Load(C2);
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Extrema_ExtCC theExtCC(myC1,myC2,U1min,U1max,U2min,U2max,Tol,Tol);
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myExtCC = theExtCC;
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myIsDone = myExtCC.IsDone() && ( myExtCC.NbExt() > 0 );
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if ( myIsDone) {
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// evaluate the lower distance and its index;
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Standard_Real Dist2, Dist2Min = myExtCC.SquareDistance(1);
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myIndex = 1;
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for ( Standard_Integer i = 2; i <= myExtCC.NbExt(); i++) {
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Dist2 = myExtCC.SquareDistance(i);
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if ( Dist2 < Dist2Min) {
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Dist2Min = Dist2;
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myIndex = i;
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}
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}
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}
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}
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//=======================================================================
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//function : NbExtrema
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//purpose :
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//=======================================================================
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Standard_Integer GeomAPI_ExtremaCurveCurve::NbExtrema() const
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{
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if ( myIsDone)
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return myExtCC.NbExt();
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else
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return 0;
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}
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//=======================================================================
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//function : Points
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::Points
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(const Standard_Integer Index,
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gp_Pnt& P1,
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gp_Pnt& P2) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Points");
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Extrema_POnCurv PC1, PC2;
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myExtCC.Points(Index,PC1,PC2);
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P1 = PC1.Value();
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P2 = PC2.Value();
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}
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//=======================================================================
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//function : Parameters
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::Parameters
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(const Standard_Integer Index,
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Standard_Real& U1,
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Standard_Real& U2) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Parameters");
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Extrema_POnCurv PC1, PC2;
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myExtCC.Points(Index,PC1,PC2);
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U1 = PC1.Parameter();
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U2 = PC2.Parameter();
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}
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//=======================================================================
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//function : Distance
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//purpose :
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//=======================================================================
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Standard_Real GeomAPI_ExtremaCurveCurve::Distance
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(const Standard_Integer Index) const
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{
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Standard_OutOfRange_Raise_if( Index < 1 || Index > NbExtrema(),
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"GeomAPI_ExtremaCurveCurve::Distance");
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return sqrt (myExtCC.SquareDistance(Index));
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}
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//=======================================================================
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//function : NearestPoints
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::NearestPoints(gp_Pnt& P1, gp_Pnt& P2) const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveCurve::NearestPoints");
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Points(myIndex,P1,P2);
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}
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//=======================================================================
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//function : LowerDistanceParameters
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//purpose :
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//=======================================================================
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void GeomAPI_ExtremaCurveCurve::LowerDistanceParameters
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(Standard_Real& U1,
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Standard_Real& U2) const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveCurve::LowerDistanceParameters");
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Parameters(myIndex,U1,U2);
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}
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//=======================================================================
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//function : LowerDistance
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//purpose :
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//=======================================================================
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Standard_Real GeomAPI_ExtremaCurveCurve::LowerDistance() const
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{
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StdFail_NotDone_Raise_if
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(!myIsDone, "GeomAPI_ExtremaCurveCurve::LowerDistance");
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return sqrt (myExtCC.SquareDistance(myIndex));
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}
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//=======================================================================
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//function : Standard_Real
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveCurve::operator Standard_Real() const
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{
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return LowerDistance();
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}
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//=======================================================================
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//function : Standard_Integer
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//purpose :
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//=======================================================================
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GeomAPI_ExtremaCurveCurve::operator Standard_Integer() const
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{
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return myExtCC.NbExt();
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}
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Standard_Boolean GeomAPI_ExtremaCurveCurve::TotalNearestPoints(gp_Pnt& P1,gp_Pnt& P2)
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{
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if(!myTotalExt) {
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TotalPerform();
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myTotalExt = Standard_True;
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}
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if(myIsInfinite) return Standard_False;
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P1 = myTotalPoints[0];
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P2 = myTotalPoints[1];
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return Standard_True;
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}
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Standard_Boolean GeomAPI_ExtremaCurveCurve::TotalLowerDistanceParameters(Quantity_Parameter& U1,
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Quantity_Parameter& U2)
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{
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if(!myTotalExt) {
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TotalPerform();
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myTotalExt = Standard_True;
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}
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if(myIsInfinite) return Standard_False;
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U1 = myTotalPars[0];
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U2 = myTotalPars[1];
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return Standard_True;
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}
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Quantity_Length GeomAPI_ExtremaCurveCurve::TotalLowerDistance()
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{
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if(!myTotalExt) {
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TotalPerform();
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myTotalExt = Standard_True;
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}
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return myTotalDist;
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}
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void GeomAPI_ExtremaCurveCurve::TotalPerform()
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{
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// StdFail_NotDone_Raise_if
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// (!myExtCC.IsDone(), "GeomAPI_ExtremaCurveCurve::TotalPerform");
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Standard_Real u11 = myC1.FirstParameter();
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Standard_Real u12 = myC1.LastParameter();
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Standard_Real u21 = myC2.FirstParameter();
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Standard_Real u22 = myC2.LastParameter();
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Standard_Boolean infinite = Precision::IsInfinite(u11) &&
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Precision::IsInfinite(u12) &&
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Precision::IsInfinite(u21) &&
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Precision::IsInfinite(u22);
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myIsInfinite = Standard_False;
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if(infinite && myExtCC.IsParallel()) {
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myIsInfinite = Standard_True;
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//calculate distance between any suitable point on C1 and C2
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gp_Pnt PonC1 = myC1.Value(0.);
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GeomAPI_ProjectPointOnCurve proj(PonC1, myC2.Curve());
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myTotalDist = proj.LowerDistance();
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return;
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}
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myTotalDist = RealLast();
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if(myIsDone && !myExtCC.IsParallel()) {
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Points(myIndex, myTotalPoints[0], myTotalPoints[1]);
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Parameters(myIndex, myTotalPars[0], myTotalPars[1]);
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myTotalDist = sqrt (myExtCC.SquareDistance(myIndex));
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if(myTotalDist <= Precision::Confusion()) return;
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}
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gp_Pnt P11, P12, P21, P22;
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Standard_Real d11, d12, d21, d22;
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myExtCC.TrimmedSquareDistances(d11, d12, d21, d22, P11, P12, P21, P22);
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Standard_Real aTotalDist2 = myTotalDist * myTotalDist;
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if(aTotalDist2 > d11) {
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myTotalDist = sqrt (d11);
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myTotalPoints[0] = P11;
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myTotalPoints[1] = P21;
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myTotalPars[0] = u11;
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myTotalPars[1] = u21;
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if(myTotalDist <= Precision::Confusion()) return;
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}
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if(aTotalDist2 > d12) {
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myTotalDist = sqrt (d12);
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myTotalPoints[0] = P11;
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myTotalPoints[1] = P22;
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myTotalPars[0] = u11;
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myTotalPars[1] = u22;
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if(myTotalDist <= Precision::Confusion()) return;
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}
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if(aTotalDist2 > d21) {
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myTotalDist = sqrt (d21);
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myTotalPoints[0] = P12;
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myTotalPoints[1] = P21;
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myTotalPars[0] = u12;
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myTotalPars[1] = u21;
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if(myTotalDist <= Precision::Confusion()) return;
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}
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if(aTotalDist2 > d22) {
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myTotalDist = sqrt (d22);
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myTotalPoints[0] = P12;
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myTotalPoints[1] = P22;
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myTotalPars[0] = u12;
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myTotalPars[1] = u22;
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if(myTotalDist <= Precision::Confusion()) return;
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}
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// calculate distances between extremities one curve and other curve
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if(!Precision::IsInfinite(u11)) {
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GeomAPI_ProjectPointOnCurve proj(P11, myC2.Curve(), u21, u22);
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if(proj.NbPoints() > 0) {
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Standard_Real dmin = proj.LowerDistance();
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if(myTotalDist > dmin) {
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myTotalDist = dmin;
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myTotalPoints[0] = P11;
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myTotalPars[0] = u11;
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myTotalPoints[1] = proj.NearestPoint();
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myTotalPars[1] = proj.LowerDistanceParameter();
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if(myTotalDist <= Precision::Confusion()) return;
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}
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}
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}
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if(!Precision::IsInfinite(u12)) {
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GeomAPI_ProjectPointOnCurve proj(P12, myC2.Curve(), u21, u22);
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if(proj.NbPoints() > 0) {
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Standard_Real dmin = proj.LowerDistance();
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if(myTotalDist > dmin) {
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myTotalDist = dmin;
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myTotalPoints[0] = P12;
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myTotalPars[0] = u12;
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myTotalPoints[1] = proj.NearestPoint();
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myTotalPars[1] = proj.LowerDistanceParameter();
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if(myTotalDist <= Precision::Confusion()) return;
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}
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}
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}
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if(!Precision::IsInfinite(u21)) {
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GeomAPI_ProjectPointOnCurve proj(P21, myC1.Curve(), u11, u12);
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if(proj.NbPoints() > 0) {
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Standard_Real dmin = proj.LowerDistance();
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if(myTotalDist > dmin) {
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myTotalDist = dmin;
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myTotalPoints[0] = proj.NearestPoint();
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myTotalPars[0] = proj.LowerDistanceParameter();
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myTotalPoints[1] = P21;
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myTotalPars[1] = u21;
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if(myTotalDist <= Precision::Confusion()) return;
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}
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}
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}
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if(!Precision::IsInfinite(u22)) {
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GeomAPI_ProjectPointOnCurve proj(P22, myC1.Curve(), u11, u12);
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if(proj.NbPoints() > 0) {
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Standard_Real dmin = proj.LowerDistance();
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if(myTotalDist > dmin) {
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myTotalDist = dmin;
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myTotalPoints[0] = proj.NearestPoint();
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myTotalPars[0] = proj.LowerDistanceParameter();
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myTotalPoints[1] = P22;
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myTotalPars[1] = u22;
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}
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}
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}
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}
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