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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.
259 lines
8.5 KiB
C++
259 lines
8.5 KiB
C++
// 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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// init. de MinRad et MaxRad (PRO15604), JCT 09/10/98
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#include <GccAna_Circ2d3Tan.jxx>
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#include <ElCLib.hxx>
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#include <IntAna2d_AnaIntersection.hxx>
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#include <IntAna2d_IntPoint.hxx>
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#include <gp_Lin2d.hxx>
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#include <gp_Circ2d.hxx>
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#include <gp_Dir2d.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <GccAna_CircLin2dBisec.hxx>
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#include <GccAna_LinPnt2dBisec.hxx>
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#include <GccInt_IType.hxx>
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#include <GccInt_BLine.hxx>
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#include <GccInt_BParab.hxx>
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#include <IntAna2d_Conic.hxx>
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#include <GccEnt_BadQualifier.hxx>
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//===========================================================================
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// Creation of a circle tangent to a circle, a straight line and a point. +
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//===========================================================================
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GccAna_Circ2d3Tan::
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GccAna_Circ2d3Tan (const GccEnt_QualifiedCirc& Qualified1 ,
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const GccEnt_QualifiedLin& Qualified2 ,
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const gp_Pnt2d& Point3 ,
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const Standard_Real Tolerance ):
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//=========================================================================
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// Initialization of fields. +
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//=========================================================================
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cirsol(1,4) ,
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qualifier1(1,4) ,
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qualifier2(1,4) ,
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qualifier3(1,4) ,
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TheSame1(1,4) ,
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TheSame2(1,4) ,
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TheSame3(1,4) ,
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pnttg1sol(1,4) ,
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pnttg2sol(1,4) ,
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pnttg3sol(1,4) ,
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par1sol(1,4) ,
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par2sol(1,4) ,
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par3sol(1,4) ,
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pararg1(1,4) ,
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pararg2(1,4) ,
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pararg3(1,4)
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{
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gp_Dir2d dirx(1.0,0.0);
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Standard_Real Tol = Abs(Tolerance);
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Standard_Real MaxRad = 1e10, MinRad = 1e-6;
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WellDone = Standard_False;
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NbrSol = 0;
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if (!(Qualified1.IsEnclosed() || Qualified1.IsEnclosing() ||
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Qualified1.IsOutside() || Qualified1.IsUnqualified()) ||
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!(Qualified2.IsEnclosed() ||
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Qualified2.IsOutside() || Qualified2.IsUnqualified())) {
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GccEnt_BadQualifier::Raise();
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return;
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}
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//=========================================================================
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// Processing. +
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//=========================================================================
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gp_Circ2d C1(Qualified1.Qualified());
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gp_Lin2d L2(Qualified2.Qualified());
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Standard_Real R1 = C1.Radius();
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gp_Pnt2d center1(C1.Location());
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gp_Pnt2d origin2(L2.Location());
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gp_Dir2d dir2(L2.Direction());
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gp_Dir2d normL2(-dir2.Y(),dir2.X());
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TColStd_Array1OfReal Radius(1,2);
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GccAna_CircLin2dBisec Bis1(C1,L2);
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GccAna_LinPnt2dBisec Bis2(L2,Point3);
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if (Bis1.IsDone() && Bis2.IsDone()) {
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Standard_Integer nbsolution1 = Bis1.NbSolutions();
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for (Standard_Integer i = 1 ; i <= nbsolution1; i++) {
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Handle(GccInt_Bisec) Sol1 = Bis1.ThisSolution(i);
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Handle(GccInt_Bisec) Sol2 = Bis2.ThisSolution();
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GccInt_IType typ1 = Sol1->ArcType();
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GccInt_IType typ2 = Sol2->ArcType();
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IntAna2d_AnaIntersection Intp;
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if (typ1 == GccInt_Lin) {
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if (typ2 == GccInt_Lin) {
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Intp.Perform(Sol1->Line(),Sol2->Line());
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}
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else if (typ2 == GccInt_Par) {
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Intp.Perform(Sol1->Line(),IntAna2d_Conic(Sol2->Parabola()));
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}
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}
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else if (typ1 == GccInt_Par) {
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if (typ2 == GccInt_Lin) {
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Intp.Perform(Sol2->Line(),IntAna2d_Conic(Sol1->Parabola()));
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}
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else if (typ2 == GccInt_Par) {
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Intp.Perform(Sol1->Parabola(),IntAna2d_Conic(Sol2->Parabola()));
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}
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}
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if (Intp.IsDone()) {
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if (!Intp.IsEmpty()) {
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for (Standard_Integer j = 1 ; j <= Intp.NbPoints() ; j++) {
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gp_Pnt2d Center(Intp.Point(j).Value());
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Standard_Real dist1 = Center.Distance(C1.Location());
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Standard_Real dist2 = L2.Distance(Center);
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Standard_Real dist3 = Center.Distance(Point3);
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Standard_Integer nbsol1 = 0;
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Standard_Integer nbsol3 = 0;
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Standard_Boolean ok = Standard_False;
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if (Qualified1.IsEnclosed()) {
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if (dist1-R1 < Tolerance) {
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Radius(1) = Abs(R1-dist1);
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nbsol1 = 1;
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ok = Standard_True;
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}
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}
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else if (Qualified1.IsOutside()) {
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if (R1-dist1 < Tolerance) {
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Radius(1) = Abs(R1-dist1);
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nbsol1 = 1;
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ok = Standard_True;
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}
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}
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else if (Qualified1.IsEnclosing()) {
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ok = Standard_True;
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nbsol1 = 1;
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Radius(1) = Abs(R1-dist1);
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}
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else if (Qualified1.IsUnqualified()) {
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ok = Standard_True;
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nbsol1 = 2;
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Radius(1) = Abs(R1-dist1);
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Radius(2) = R1+dist1;
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}
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if (Qualified2.IsEnclosed() && ok) {
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if ((((L2.Location().X()-Center.X())*(-L2.Direction().Y()))+
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((L2.Location().Y()-Center.Y())*(L2.Direction().X())))<=0){
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for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
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if (Abs(dist2-Radius(ii)) < Tol) {
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ok = Standard_True;
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Radius(1) = Radius(ii);
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}
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}
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}
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}
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else if (Qualified2.IsOutside() && ok) {
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if ((((L2.Location().X()-Center.X())*(-L2.Direction().Y()))+
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((L2.Location().Y()-Center.Y())*(L2.Direction().X())))>=0){
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for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
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if (Abs(dist2-Radius(ii)) < Tol) {
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ok = Standard_True;
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Radius(1) = Radius(ii);
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}
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}
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}
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}
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else if (Qualified2.IsUnqualified() && ok) {
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for (Standard_Integer ii = 1 ; ii <= nbsol1 ; ii++) {
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if (Abs(dist2-Radius(ii)) < Tol) {
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ok = Standard_True;
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Radius(1) = Radius(ii);
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}
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}
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}
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if (Abs(dist3-Radius(1)) <= Tol && ok) {
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ok = Standard_True;
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nbsol3 = 1;
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}
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if (ok) {
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for (Standard_Integer k = 1 ; k <= nbsol3 ; k++) {
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if (NbrSol==4)
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break;
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// pop : if the radius is too great - no creation
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if (Radius(k) > MaxRad) break;
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if (Abs(Radius(k)) < MinRad) break;
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NbrSol++;
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cirsol(NbrSol) = gp_Circ2d(gp_Ax2d(Center,dirx),Radius(k));
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// ==========================================================
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Standard_Real distcc1 = Center.Distance(center1);
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if (!Qualified1.IsUnqualified()) {
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qualifier1(NbrSol) = Qualified1.Qualifier();
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}
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else if (Abs(distcc1+Radius(k)-R1) < Tol) {
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qualifier1(NbrSol) = GccEnt_enclosed;
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}
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else if (Abs(distcc1-R1-Radius(k)) < Tol) {
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qualifier1(NbrSol) = GccEnt_outside;
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}
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else { qualifier1(NbrSol) = GccEnt_enclosing; }
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gp_Dir2d dc2(origin2.XY()-Center.XY());
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if (!Qualified2.IsUnqualified()) {
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qualifier2(NbrSol) = Qualified2.Qualifier();
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}
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else if (dc2.Dot(normL2) > 0.0) {
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qualifier2(NbrSol) = GccEnt_outside;
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}
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else { qualifier2(NbrSol) = GccEnt_enclosed; }
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qualifier3(NbrSol) = GccEnt_noqualifier;
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if (Center.Distance(C1.Location()) <= Tolerance &&
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Abs(Radius(k)-R1) <= Tolerance) {
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TheSame1(NbrSol) = 1;
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}
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else {
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TheSame1(NbrSol) = 0;
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// modified by NIZHNY-EAP Mon Nov 1 13:48:21 1999 ___BEGIN___
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// gp_Dir2d dc(C1.Location().XY()-Center.XY());
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gp_Dir2d dc(Center.XY()-C1.Location().XY());
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// modified by NIZHNY-EAP Mon Nov 1 13:48:55 1999 ___END___
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pnttg1sol(NbrSol)=gp_Pnt2d(Center.XY()+Radius(k)*dc.XY());
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par1sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
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pnttg1sol(NbrSol));
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pararg1(NbrSol)=ElCLib::Parameter(C1,pnttg1sol(NbrSol));
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}
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TheSame2(NbrSol) = 0;
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TheSame3(NbrSol) = 0;
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gp_Dir2d dc(L2.Location().XY()-Center.XY());
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Standard_Real sign = dc.Dot(gp_Dir2d(-L2.Direction().Y(),
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L2.Direction().X()));
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dc = gp_Dir2d(sign*gp_XY(-L2.Direction().Y(),
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L2.Direction().X()));
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pnttg2sol(NbrSol) = gp_Pnt2d(Center.XY()+Radius(k)*dc.XY());
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par2sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
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pnttg2sol(NbrSol));
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pararg2(NbrSol)=ElCLib::Parameter(L2,pnttg2sol(NbrSol));
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pnttg3sol(NbrSol) = Point3;
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par3sol(NbrSol)=ElCLib::Parameter(cirsol(NbrSol),
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pnttg3sol(NbrSol));
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pararg3(NbrSol) = 0.;
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}
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}
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}
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}
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WellDone = Standard_True;
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}
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if (NbrSol==4)
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break;
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}
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}
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}
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