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occt/src/Extrema/Extrema_ExtCC.cxx
aml 20a216fe6f 0026075: Make Extrema_GenExtCC return IsParallel flag in case of parallel curves 
1) Added check for parallel curves.
2) Changed unefficient o(n^2) duplicates deleting algorithm to o(n) algorithm.
3) Deleted useless upper level duplicates deleting algorithm.

Test-case for issue #26075
2015-06-04 14:14:52 +03:00

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// Created on: 1994-07-06
// Created by: Laurent PAINNOT
// Copyright (c) 1994-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
// Modified by MPS (june 96) : correction du trap dans le cas droite/Bezier
// Modified by MPS (mai 97) : PRO 7598
// tri des solutions pour eviter de rendre plusieurs
// fois la meme solution
#include <Extrema_ExtCC.ixx>
#include <StdFail_NotDone.hxx>
#include <Extrema_ExtElC.hxx>
#include <Standard_Failure.hxx>
#include <GeomAbs_CurveType.hxx>
#include <Geom_Curve.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom_Ellipse.hxx>
#include <Geom_Circle.hxx>
#include <Geom_Line.hxx>
#include <Geom_Parabola.hxx>
#include <Geom_Hyperbola.hxx>
#include <Extrema_POnCurv.hxx>
#include <Extrema_SequenceOfPOnCurv.hxx>
#include <TColStd_SequenceOfReal.hxx>
#include <TColStd_ListIteratorOfListOfTransient.hxx>
#include <Standard_NotImplemented.hxx>
#include <Precision.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <ElCLib.hxx>
#include <Extrema_ExtPElC.hxx>
#include <Standard_NullObject.hxx>
#include <Adaptor3d_Curve.hxx>
#include <Extrema_CurveTool.hxx>
//=======================================================================
//function : Extrema_ExtCC
//purpose :
//=======================================================================
Extrema_ExtCC::Extrema_ExtCC (const Standard_Real TolC1,
const Standard_Real TolC2) :
myDone (Standard_False)
{
myC[0] = 0; myC[1] = 0;
myTol[0] = TolC1; myTol[1] = TolC2;
}
//=======================================================================
//function : Extrema_ExtCC
//purpose :
//=======================================================================
Extrema_ExtCC::Extrema_ExtCC(const Adaptor3d_Curve& C1,
const Adaptor3d_Curve& C2,
const Standard_Real U1,
const Standard_Real U2,
const Standard_Real V1,
const Standard_Real V2,
const Standard_Real TolC1,
const Standard_Real TolC2)
: myECC(C1, C2, U1, U2, V1, V2),
myDone (Standard_False)
{
SetCurve (1, C1, U1, U2);
SetCurve (2, C2, V1, V2);
SetTolerance (1, TolC1);
SetTolerance (2, TolC2);
Perform();
}
//=======================================================================
//function : Extrema_ExtCC
//purpose :
//=======================================================================
Extrema_ExtCC::Extrema_ExtCC(const Adaptor3d_Curve& C1,
const Adaptor3d_Curve& C2,
const Standard_Real TolC1,
const Standard_Real TolC2)
: myECC(C1, C2),
myDone (Standard_False)
{
SetCurve (1, C1, C1.FirstParameter(), C1.LastParameter());
SetCurve (2, C2, C2.FirstParameter(), C2.LastParameter());
SetTolerance (1, TolC1);
SetTolerance (2, TolC2);
Perform();
}
//=======================================================================
//function : SetCurve
//purpose :
//=======================================================================
void Extrema_ExtCC::SetCurve (const Standard_Integer theRank, const Adaptor3d_Curve& C)
{
Standard_OutOfRange_Raise_if (theRank < 1 || theRank > 2, "Extrema_ExtCC::SetCurve()")
Standard_Integer anInd = theRank - 1;
myC[anInd] = (Standard_Address)&C;
}
//=======================================================================
//function : SetCurve
//purpose :
//=======================================================================
void Extrema_ExtCC::SetCurve (const Standard_Integer theRank, const Adaptor3d_Curve& C,
const Standard_Real Uinf, const Standard_Real Usup)
{
SetCurve (theRank, C);
SetRange (theRank, Uinf, Usup);
}
//=======================================================================
//function : SetRange
//purpose :
//=======================================================================
void Extrema_ExtCC::SetRange (const Standard_Integer theRank,
const Standard_Real Uinf, const Standard_Real Usup)
{
Standard_OutOfRange_Raise_if (theRank < 1 || theRank > 2, "Extrema_ExtCC::SetRange()")
Standard_Integer anInd = theRank - 1;
myInf[anInd] = Uinf;
mySup[anInd] = Usup;
}
//=======================================================================
//function : SetTolerance
//purpose :
//=======================================================================
void Extrema_ExtCC::SetTolerance (const Standard_Integer theRank, const Standard_Real theTol)
{
Standard_OutOfRange_Raise_if (theRank < 1 || theRank > 2, "Extrema_ExtCC::SetTolerance()")
Standard_Integer anInd = theRank - 1;
myTol[anInd] = theTol;
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
void Extrema_ExtCC::Perform()
{
Standard_NullObject_Raise_if (!myC[0] || !myC[1], "Extrema_ExtCC::Perform()")
myECC.SetParams(*((Adaptor3d_Curve*)myC[0]),
*((Adaptor3d_Curve*)myC[1]), myInf[0], mySup[0], myInf[1], mySup[1]);
myECC.SetTolerance(Min(myTol[0], myTol[1]));
myDone = Standard_False;
mypoints.Clear();
mySqDist.Clear();
myIsPar = Standard_False;
GeomAbs_CurveType type1 = (*((Adaptor3d_Curve*)myC[0])).GetType();
GeomAbs_CurveType type2 = (*((Adaptor3d_Curve*)myC[1])).GetType();
Standard_Real U11, U12, U21, U22, Tol = Min(myTol[0], myTol[1]);
mynbext = 0;
inverse = Standard_False;
U11 = myInf[0];
U12 = mySup[0];
U21 = myInf[1];
U22 = mySup[1];
if (!Precision::IsInfinite(U11)) P1f = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), U11);
if (!Precision::IsInfinite(U12)) P1l = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), U12);
if (!Precision::IsInfinite(U21)) P2f = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), U21);
if (!Precision::IsInfinite(U22)) P2l = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), U22);
if (Precision::IsInfinite(U11) || Precision::IsInfinite(U21)) mydist11 = RealLast();
else mydist11 = P1f.SquareDistance(P2f);
if (Precision::IsInfinite(U11) || Precision::IsInfinite(U22)) mydist12 = RealLast();
else mydist12 = P1f.SquareDistance(P2l);
if (Precision::IsInfinite(U12) || Precision::IsInfinite(U21)) mydist21 = RealLast();
else mydist21 = P1l.SquareDistance(P2f);
if (Precision::IsInfinite(U12) || Precision::IsInfinite(U22)) mydist22 = RealLast();
else mydist22 = P1l.SquareDistance(P2l);
//Depending on the types of curves, the algorithm is chosen:
//- _ExtElC, when one of the curves is a line and the other is elementary,
// or there are two circles;
//- _GenExtCC, in all other cases
if ( (type1 == GeomAbs_Line && type2 <= GeomAbs_Parabola) ||
(type2 == GeomAbs_Line && type1 <= GeomAbs_Parabola) ) {
//analytical case - one curve is always a line
Standard_Integer anInd1 = 0, anInd2 = 1;
GeomAbs_CurveType aType2 = type2;
inverse = (type1 > type2);
if (inverse) {
//algorithm uses inverse order of arguments
anInd1 = 1;
anInd2 = 0;
aType2 = type1;
}
switch (aType2) {
case GeomAbs_Line: {
Extrema_ExtElC Xtrem((*((Adaptor3d_Curve*)myC[anInd1])).Line(), (*((Adaptor3d_Curve*)myC[anInd2])).Line(), Tol);
Results(Xtrem, U11, U12, U21, U22);
break;
}
case GeomAbs_Circle: {
Extrema_ExtElC Xtrem((*((Adaptor3d_Curve*)myC[anInd1])).Line(), (*((Adaptor3d_Curve*)myC[anInd2])).Circle(), Tol);
Results(Xtrem, U11, U12, U21, U22);
break;
}
case GeomAbs_Ellipse: {
Extrema_ExtElC Xtrem((*((Adaptor3d_Curve*)myC[anInd1])).Line(), (*((Adaptor3d_Curve*)myC[anInd2])).Ellipse());
Results(Xtrem, U11, U12, U21, U22);
break;
}
case GeomAbs_Hyperbola: {
Extrema_ExtElC Xtrem((*((Adaptor3d_Curve*)myC[anInd1])).Line(), (*((Adaptor3d_Curve*)myC[anInd2])).Hyperbola());
Results(Xtrem, U11, U12, U21, U22);
break;
}
case GeomAbs_Parabola: {
Extrema_ExtElC Xtrem((*((Adaptor3d_Curve*)myC[anInd1])).Line(), (*((Adaptor3d_Curve*)myC[anInd2])).Parabola());
Results(Xtrem, U11, U12, U21, U22);
break;
}
default: break;
}
} else if (type1 == GeomAbs_Circle && type2 == GeomAbs_Circle) {
//analytical case - two circles
Standard_Boolean bIsDone;
Extrema_ExtElC CCXtrem ((*((Adaptor3d_Curve*)myC[0])).Circle(), (*((Adaptor3d_Curve*)myC[1])).Circle());
bIsDone = CCXtrem.IsDone();
if(bIsDone) {
Results(CCXtrem, U11, U12, U21, U22);
}
else {
myECC.Perform();
Results(myECC, U11, U12, U21, U22);
}
} else {
myECC.Perform();
Results(myECC, U11, U12, U21, U22);
}
}
//=======================================================================
//function : IsDone
//purpose :
//=======================================================================
Standard_Boolean Extrema_ExtCC::IsDone() const
{
return myDone;
}
//=======================================================================
//function : IsParallel
//purpose :
//=======================================================================
Standard_Boolean Extrema_ExtCC::IsParallel() const
{
return myIsPar;
}
//=======================================================================
//function : Value
//purpose :
//=======================================================================
Standard_Real Extrema_ExtCC::SquareDistance(const Standard_Integer N) const
{
if(!myDone) StdFail_NotDone::Raise();
if ((N <= 0) || (N > mynbext)) Standard_OutOfRange::Raise();
return mySqDist.Value(N);
}
//=======================================================================
//function : NbExt
//purpose :
//=======================================================================
Standard_Integer Extrema_ExtCC::NbExt() const
{
if(!myDone) StdFail_NotDone::Raise();
return mynbext;
}
//=======================================================================
//function : Points
//purpose :
//=======================================================================
void Extrema_ExtCC::Points(const Standard_Integer N,
Extrema_POnCurv& P1,
Extrema_POnCurv& P2) const
{
if(!myDone) StdFail_NotDone::Raise();
if ((N <= 0) || (N > mynbext)) Standard_OutOfRange::Raise();
P1 = mypoints.Value(2*N-1);
P2 = mypoints.Value(2*N);
}
//=======================================================================
//function : TrimmedDistances
//purpose :
//=======================================================================
void Extrema_ExtCC::TrimmedSquareDistances(Standard_Real& dist11,
Standard_Real& dist12,
Standard_Real& dist21,
Standard_Real& dist22,
gp_Pnt& P11 ,
gp_Pnt& P12 ,
gp_Pnt& P21 ,
gp_Pnt& P22 ) const {
dist11 = mydist11;
dist12 = mydist12;
dist21 = mydist21;
dist22 = mydist22;
P11 = P1f;
P12 = P1l;
P21 = P2f;
P22 = P2l;
}
//=======================================================================
//function : Results
//purpose :
//=======================================================================
void Extrema_ExtCC::Results(const Extrema_ExtElC& AlgExt,
const Standard_Real Ut11,
const Standard_Real Ut12,
const Standard_Real Ut21,
const Standard_Real Ut22)
{
Standard_Integer i, NbExt;
Standard_Real Val, U, U2;
Extrema_POnCurv P1, P2;
myDone = AlgExt.IsDone();
if (myDone) {
myIsPar = AlgExt.IsParallel();
if (myIsPar) {
GeomAbs_CurveType type = Extrema_CurveTool::GetType(*((Adaptor3d_Curve*)myC[0]));
GeomAbs_CurveType type2 = Extrema_CurveTool::GetType(*((Adaptor3d_Curve*)myC[1]));
// Parallel case is only for line-line, circle-circle and circle-line!!!
// But really for trimmed curves extremas can not exist!
Extrema_POnCurv dummypoint(0., gp_Pnt(0.,0.,0.));
if(type != type2) {
mySqDist.Append(AlgExt.SquareDistance(1));
if(type == GeomAbs_Circle) {
gp_Pnt PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), Ut11);
P1.SetValues(Ut11, PonC1);
Extrema_ExtPElC ExtPLin(PonC1, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
if(ExtPLin.IsDone()) {
mynbext = 1;
P2 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
}
else {
myIsPar = Standard_False;
mynbext = 0;
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
}
}
else {
gp_Pnt PonC2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), Ut21);
P2.SetValues(Ut21, PonC2);
Extrema_ExtPElC ExtPLin(PonC2, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[0])), Precision::Confusion(), Ut11, Ut12);
if(ExtPLin.IsDone()) {
mynbext = 1;
P1 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
}
else {
myIsPar = Standard_False;
mynbext = 0;
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
}
}
return;
}
if(type == GeomAbs_Line) {
Standard_Boolean infinite = Precision::IsInfinite(Ut11) &&
Precision::IsInfinite(Ut12) &&
Precision::IsInfinite(Ut21) &&
Precision::IsInfinite(Ut22);
if(infinite) {
mynbext = 1;
mySqDist.Append(AlgExt.SquareDistance(1));
gp_Pnt PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), 0.);
P1.SetValues(0., PonC1);
Extrema_ExtPElC ExtPLin(PonC1, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
if(ExtPLin.IsDone()) {
P2 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
}
else {
myIsPar = Standard_False;
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
}
}
else {
Standard_Boolean finish = Standard_False;
if(!Precision::IsInfinite(Ut11)) {
gp_Pnt PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), Ut11);
Extrema_ExtPElC ExtPLin(PonC1, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
if(ExtPLin.IsDone() && ExtPLin.NbExt() > 0) {
mynbext = 1;
mySqDist.Append(AlgExt.SquareDistance(1));
P1.SetValues(Ut11, PonC1);
P2 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
finish = Standard_True;
}
}
if(!finish) {
if(!Precision::IsInfinite(Ut12)) {
gp_Pnt PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), Ut12);
Extrema_ExtPElC ExtPLin(PonC1, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
if(ExtPLin.IsDone() && ExtPLin.NbExt() > 0) {
mynbext = 1;
mySqDist.Append(AlgExt.SquareDistance(1));
P1.SetValues(Ut12, PonC1);
P2 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
finish = Standard_True;
}
}
}
if(!finish) {
if(!Precision::IsInfinite(Ut21)) {
gp_Pnt PonC2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), Ut21);
Extrema_ExtPElC ExtPLin(PonC2, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[0])), Precision::Confusion(), Ut11, Ut12);
if(ExtPLin.IsDone() && ExtPLin.NbExt() > 0) {
mynbext = 1;
mySqDist.Append(AlgExt.SquareDistance(1));
P2.SetValues(Ut21, PonC2);
P1 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
finish = Standard_True;
}
}
}
if(!finish) {
if(!Precision::IsInfinite(Ut22)) {
gp_Pnt PonC2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), Ut22);
Extrema_ExtPElC ExtPLin(PonC2, Extrema_CurveTool::Line(*((Adaptor3d_Curve*)myC[0])), Precision::Confusion(), Ut11, Ut12);
if(ExtPLin.IsDone() && ExtPLin.NbExt() > 0) {
mynbext = 1;
mySqDist.Append(AlgExt.SquareDistance(1));
P2.SetValues(Ut22, PonC2);
P1 = ExtPLin.Point(1);
mypoints.Append(P1);
mypoints.Append(P2);
finish = Standard_True;
}
}
}
if(!finish) {
mynbext = 0;
myIsPar = Standard_False;
mySqDist.Append(AlgExt.SquareDistance(1));
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
}
}
}
else {
Standard_Boolean finish = Standard_False;
gp_Pnt PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), Ut11);
P1.SetValues(Ut11, PonC1);
Extrema_ExtPElC ExtPCir(PonC1, Extrema_CurveTool::Circle(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
if(ExtPCir.IsDone() && ExtPCir.NbExt() > 0) {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
mynbext++;
P2 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
if(mynbext == 2) finish = Standard_True;
}
if(!finish) {
PonC1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[0]), Ut12);
ExtPCir.Perform(PonC1, Extrema_CurveTool::Circle(*((Adaptor3d_Curve*)myC[1])), Precision::Confusion(), Ut21, Ut22);
P1.SetValues(Ut12, PonC1);
if(ExtPCir.IsDone() && ExtPCir.NbExt() > 0) {
if(mynbext == 0) {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
mynbext++;
P2 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
else {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
Standard_Real dist = mySqDist(1);
if(Abs(dist - ExtPCir.SquareDistance(i)) > Precision::Confusion()) {
mynbext++;
P2 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
}
if(mynbext == 2) finish = Standard_True;
}
}
if(!finish) {
gp_Pnt PonC2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), Ut21);
ExtPCir.Perform(PonC2, Extrema_CurveTool::Circle(*((Adaptor3d_Curve*)myC[0])), Precision::Confusion(), Ut11, Ut12);
P2.SetValues(Ut21, PonC2);
if(ExtPCir.IsDone() && ExtPCir.NbExt() > 0) {
if(mynbext == 0) {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
mynbext++;
P1 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
else {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
Standard_Real dist = mySqDist(1);
if(Abs(dist - ExtPCir.SquareDistance(i)) > Precision::Confusion()) {
mynbext++;
P1 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
}
if(mynbext == 2) finish = Standard_True;
}
}
if(!finish) {
gp_Pnt PonC2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[1]), Ut22);
ExtPCir.Perform(PonC2, Extrema_CurveTool::Circle(*((Adaptor3d_Curve*)myC[0])), Precision::Confusion(), Ut11, Ut12);
P2.SetValues(Ut22, PonC2);
if(ExtPCir.IsDone() && ExtPCir.NbExt() > 0) {
if(mynbext == 0) {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
mynbext++;
P1 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
else {
for(i = 1; i <= ExtPCir.NbExt(); i++) {
Standard_Real dist = mySqDist(1);
if(Abs(dist - ExtPCir.SquareDistance(i)) > Precision::Confusion()) {
mynbext++;
P1 = ExtPCir.Point(i);
mySqDist.Append(ExtPCir.SquareDistance(i));
mypoints.Append(P1);
mypoints.Append(P2);
}
}
}
if(mynbext == 2) finish = Standard_True;
}
}
if(mynbext == 0) {
myIsPar = Standard_False;
mySqDist.Append(AlgExt.SquareDistance(1));
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
mySqDist.Append(AlgExt.SquareDistance(2));
mypoints.Append(dummypoint);
mypoints.Append(dummypoint);
}
}
}
else {
NbExt = AlgExt.NbExt();
for (i = 1; i <= NbExt; i++) {
// Verification de la validite des parametres
AlgExt.Points(i, P1, P2);
if (!inverse) {
U = P1.Parameter();
U2 = P2.Parameter();
}
else {
U2 = P1.Parameter();
U = P2.Parameter();
}
if (Extrema_CurveTool::IsPeriodic(*((Adaptor3d_Curve*)myC[0]))) {
U = ElCLib::InPeriod(U, Ut11, Ut11+Extrema_CurveTool::Period(*((Adaptor3d_Curve*)myC[0])));
}
if (Extrema_CurveTool::IsPeriodic(*((Adaptor3d_Curve*)myC[1]))) {
U2 = ElCLib::InPeriod(U2, Ut21, Ut21+Extrema_CurveTool::Period(*((Adaptor3d_Curve*)myC[1])));
}
if ((U >= Ut11 - RealEpsilon()) &&
(U <= Ut12 + RealEpsilon()) &&
(U2 >= Ut21 - RealEpsilon()) &&
(U2 <= Ut22 + RealEpsilon())) {
mynbext++;
Val = AlgExt.SquareDistance(i);
mySqDist.Append(Val);
if (!inverse) {
P1.SetValues(U, P1.Value());
P2.SetValues(U2, P2.Value());
mypoints.Append(P1);
mypoints.Append(P2);
}
else {
P1.SetValues(U2, P1.Value());
P2.SetValues(U, P2.Value());
mypoints.Append(P2);
mypoints.Append(P1);
}
}
}
}
}
}
//=======================================================================
//function : Results
//purpose :
//=======================================================================
void Extrema_ExtCC::Results(const Extrema_ECC& AlgExt,
const Standard_Real Ut11,
const Standard_Real Ut12,
const Standard_Real Ut21,
const Standard_Real Ut22)
{
Standard_Integer i, NbExt;
Standard_Real Val, U, U2;
Extrema_POnCurv P1, P2;
myDone = AlgExt.IsDone();
if (myDone)
{
myIsPar = AlgExt.IsParallel();
NbExt = AlgExt.NbExt();
for (i = 1; i <= NbExt; i++)
{
AlgExt.Points(i, P1, P2);
U = P1.Parameter();
U2 = P2.Parameter();
// Check points to be into param space.
if (Extrema_CurveTool::IsPeriodic(*((Adaptor3d_Curve*)myC[0])))
{
U = ElCLib::InPeriod(U, Ut11, Ut11+Extrema_CurveTool::Period(*((Adaptor3d_Curve*)myC[0])));
}
if (Extrema_CurveTool::IsPeriodic(*((Adaptor3d_Curve*)myC[1])))
{
U2 = ElCLib::InPeriod(U2, Ut21, Ut21+Extrema_CurveTool::Period(*((Adaptor3d_Curve*)myC[1])));
}
if ((U >= Ut11 - RealEpsilon()) &&
(U <= Ut12 + RealEpsilon()) &&
(U2 >= Ut21 - RealEpsilon()) &&
(U2 <= Ut22 + RealEpsilon()) )
{
mynbext++;
Val = AlgExt.SquareDistance(i);
mySqDist.Append(Val);
P1.SetValues(U, P1.Value());
P2.SetValues(U2, P2.Value());
mypoints.Append(P1);
mypoints.Append(P2);
}
}
}
}
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