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// File: GccAna_Circ2d2TanRad_4.cxx
// Created: Tue Sep 24 09:15:20 1991
// Author: Remi GILET
// <reg@topsn2>
#include <GccAna_Circ2d2TanRad.jxx>
#include <ElCLib.hxx>
#include <gp_Circ2d.hxx>
#include <gp_Lin2d.hxx>
#include <gp_Ax2d.hxx>
#include <IntAna2d_AnaIntersection.hxx>
#include <IntAna2d_IntPoint.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <Standard_NegativeValue.hxx>
#include <gp.hxx>
#include <GccEnt_BadQualifier.hxx>
#include <Precision.hxx>
// circulaire tangent a deux ligne de rayon donne
//===============================================
//========================================================================
// On initialise WellDone a false. +
// On recupere les deux lignes L1 et L2. +
// On sort en erreur dans les cas ou la construction est impossible. +
// On fait les paralleles a L1 et L2 dans le bon sens. +
// On intersecte les paralleles ==> Le point de centre de la solution. +
// On cree la solution qu on ajoute aux solutions deja trouvees. +
// On remplit les champs. +
//========================================================================
GccAna_Circ2d2TanRad::
GccAna_Circ2d2TanRad (const GccEnt_QualifiedLin& Qualified1 ,
const GccEnt_QualifiedLin& Qualified2 ,
const Standard_Real Radius ,
const Standard_Real
#ifdef DEB
Tolerance
#endif
):
qualifier1(1,4) ,
qualifier2(1,4),
TheSame1(1,4) ,
TheSame2(1,4) ,
cirsol(1,4) ,
pnttg1sol(1,4) ,
pnttg2sol(1,4) ,
par1sol(1,4) ,
par2sol(1,4) ,
pararg1(1,4) ,
pararg2(1,4)
{
gp_Dir2d dirx(1.0,0.0);
TColStd_Array1OfReal cote1(1,2);
TColStd_Array1OfReal cote2(1,2);
Standard_Integer nbrcote1=0;
Standard_Integer nbrcote2=0;
NbrSol = 0;
WellDone = Standard_False;
if (!(Qualified1.IsEnclosed() ||
Qualified1.IsOutside() || Qualified1.IsUnqualified()) ||
!(Qualified2.IsEnclosed() ||
Qualified2.IsOutside() || Qualified2.IsUnqualified())) {
GccEnt_BadQualifier::Raise();
return;
}
gp_Lin2d L1 = Qualified1.Qualified();
gp_Lin2d L2 = Qualified2.Qualified();
Standard_Real x1dir = (L1.Direction()).X();
Standard_Real y1dir = (L1.Direction()).Y();
Standard_Real lx1loc = (L1.Location()).X();
Standard_Real ly1loc = (L1.Location()).Y();
Standard_Real x2dir = (L2.Direction()).X();
Standard_Real y2dir = (L2.Direction()).Y();
Standard_Real lx2loc = (L2.Location()).X();
Standard_Real ly2loc = (L2.Location()).Y();
gp_Pnt2d origin1(lx1loc,ly1loc);
gp_Pnt2d origin2(lx2loc,ly2loc);
gp_Dir2d normL1(x1dir,y1dir);
gp_Dir2d normL2(x2dir,y2dir);
if (Radius < 0.0) { Standard_NegativeValue::Raise(); }
else {
if (L1.Direction().IsParallel(L2.Direction(),Precision::Angular())) {
WellDone = Standard_True;
}
else {
if (Qualified1.IsEnclosed() && Qualified2.IsEnclosed()) {
// =======================================================
nbrcote1 = 1;
nbrcote2 = 1;
cote1(1) = 1.0;
cote2(1) = 1.0;
}
else if(Qualified1.IsEnclosed() && Qualified2.IsOutside()) {
// ==========================================================
nbrcote1 = 1;
nbrcote2 = 1;
cote1(1) = 1.0;
cote2(1) = -1.0;
}
else if (Qualified1.IsOutside() && Qualified2.IsEnclosed()) {
// ===========================================================
nbrcote1 = 1;
nbrcote2 = 1;
cote1(1) = -1.0;
cote2(1) = 1.0;
}
else if(Qualified1.IsOutside() && Qualified2.IsOutside()) {
// =========================================================
nbrcote1 = 1;
nbrcote2 = 1;
cote1(1) = -1.0;
cote2(1) = -1.0;
}
if(Qualified1.IsEnclosed() && Qualified2.IsUnqualified()) {
// =========================================================
nbrcote1 = 1;
nbrcote2 = 2;
cote1(1) = 1.0;
cote2(1) = 1.0;
cote2(2) = -1.0;
}
if(Qualified1.IsUnqualified() && Qualified2.IsEnclosed()) {
// =========================================================
nbrcote1 = 2;
nbrcote2 = 1;
cote1(1) = 1.0;
cote1(2) = -1.0;
cote2(1) = 1.0;
}
else if(Qualified1.IsOutside() && Qualified2.IsUnqualified()) {
// =============================================================
nbrcote1 = 1;
nbrcote2 = 2;
cote1(1) = -1.0;
cote2(1) = 1.0;
cote2(2) = -1.0;
}
if(Qualified1.IsUnqualified() && Qualified2.IsOutside()) {
// ========================================================
nbrcote1 = 2;
nbrcote2 = 1;
cote1(1) = 1.0;
cote1(2) = -1.0;
cote2(1) = -1.0;
}
else if(Qualified1.IsUnqualified() && Qualified2.IsUnqualified()) {
// =================================================================
nbrcote1 = 2;
nbrcote2 = 2;
cote1(1) = 1.0;
cote1(2) = -1.0;
cote2(1) = 1.0;
cote2(2) = -1.0;
}
for (Standard_Integer jcote1 = 1 ; jcote1 <= nbrcote1 ; jcote1++) {
for (Standard_Integer jcote2 = 1 ; jcote2 <= nbrcote2 ; jcote2++) {
gp_Lin2d linint1(gp_Pnt2d(lx1loc-cote1(jcote1)*y1dir*Radius,
ly1loc+cote1(jcote1)*x1dir*Radius),
L1.Direction());
gp_Lin2d linint2(gp_Pnt2d(lx2loc-cote2(jcote2)*y2dir*Radius,
ly2loc+cote2(jcote2)*x2dir*Radius),
L2.Direction());
IntAna2d_AnaIntersection Intp(linint1,linint2);
if (Intp.IsDone()) {
if (!Intp.IsEmpty()) {
for (Standard_Integer i = 1 ; i <= Intp.NbPoints() ; i++) {
NbrSol++;
gp_Pnt2d Center(Intp.Point(i).Value());
cirsol(NbrSol) = gp_Circ2d(gp_Ax2d(Center,dirx),Radius);
// =======================================================
gp_Dir2d dc1(origin1.XY()-Center.XY());
gp_Dir2d dc2(origin2.XY()-Center.XY());
if (!Qualified1.IsUnqualified()) {
qualifier1(NbrSol) = Qualified1.Qualifier();
}
else if (dc1.Dot(normL1) > 0.0) {
qualifier1(NbrSol) = GccEnt_outside;
}
else { qualifier1(NbrSol) = GccEnt_enclosed; }
if (!Qualified2.IsUnqualified()) {
qualifier2(NbrSol) = Qualified2.Qualifier();
}
else if (dc2.Dot(normL2) > 0.0) {
qualifier2(NbrSol) = GccEnt_outside;
}
else { qualifier2(NbrSol) = GccEnt_enclosed; }
TheSame1(NbrSol) = 0;
TheSame2(NbrSol) = 0;
pnttg1sol(NbrSol) = gp_Pnt2d(Center.XY()+
cote1(jcote1)*Radius*gp_XY(y1dir,-x1dir));
pnttg2sol(NbrSol) = gp_Pnt2d(Center.XY()+
cote2(jcote2)*Radius*gp_XY(y2dir,-x2dir));
}
}
WellDone = Standard_True;
}
}
}
}
}
for (Standard_Integer i = 1 ; i <= NbrSol ; i++) {
par1sol(i)=ElCLib::Parameter(cirsol(i),pnttg1sol(i));
pararg1(i)=ElCLib::Parameter(L1,pnttg1sol(i));
par2sol(i)=ElCLib::Parameter(cirsol(i),pnttg2sol(i));
pararg2(i)=ElCLib::Parameter(L2,pnttg2sol(i));
}
}
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