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// File: Extrema_ExtCS.cxx
// Created: Tue Jul 18 10:33:04 1995
// Author: Modelistation
// <model@metrox>
// Modified by MPS (june 96) :
// Dans les cas line /cone et line /tore on utilise la classe GenExtCS
// a la place de ExtElCS. Dans ExtElCS les cas line/cone et line/tore ne sont
// pas implementes
// Modified by skv - Thu Jul 7 12:29:34 2005 OCC9134
#include <Extrema_ExtCS.ixx>
#include <Extrema_GenExtCS.hxx>
#include <StdFail_NotDone.hxx>
#include <Standard_NotImplemented.hxx>
#include <StdFail_InfiniteSolutions.hxx>
#include <Precision.hxx>
#include <GeomAbs_CurveType.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pln.hxx>
#include <gp_Cylinder.hxx>
#include <gp_Cone.hxx>
#include <gp_Sphere.hxx>
#include <gp_Torus.hxx>
#include <gp_Lin.hxx>
#include <ElCLib.hxx>
#include <Extrema_ExtPElC.hxx>
#include <Bnd_Box.hxx>
#include <BndLib_AddSurface.hxx>
#include <Extrema_ExtPElS.hxx>
Extrema_ExtCS::Extrema_ExtCS()
{
myDone = Standard_False;
}
Extrema_ExtCS::Extrema_ExtCS(const Adaptor3d_Curve& C,
const Adaptor3d_Surface& S,
const Standard_Real TolC,
const Standard_Real TolS)
{
Initialize(S, S.FirstUParameter(), S.LastUParameter(),
S.FirstVParameter(), S.LastVParameter(),
TolC, TolS);
Perform(C, C.FirstParameter(), C.LastParameter());
}
Extrema_ExtCS::Extrema_ExtCS(const Adaptor3d_Curve& C,
const Adaptor3d_Surface& S,
const Standard_Real UCinf,
const Standard_Real UCsup,
const Standard_Real Uinf,
const Standard_Real Usup,
const Standard_Real Vinf,
const Standard_Real Vsup,
const Standard_Real TolC,
const Standard_Real TolS)
{
Initialize(S, Uinf, Usup, Vinf, Vsup, TolC, TolS);
Perform(C, UCinf, UCsup);
}
void Extrema_ExtCS::Initialize(const Adaptor3d_Surface& S,
const Standard_Real Uinf,
const Standard_Real Usup,
const Standard_Real Vinf,
const Standard_Real Vsup,
const Standard_Real TolC,
const Standard_Real TolS)
{
myS = (Adaptor3d_SurfacePtr)&S;
myIsPar = Standard_False;
myuinf = Uinf;
myusup = Usup;
myvinf = Vinf;
myvsup = Vsup;
mytolC = TolC;
mytolS = TolS;
myStype = myS->GetType();
}
void Extrema_ExtCS::Perform(const Adaptor3d_Curve& C,
const Standard_Real Uinf,
const Standard_Real Usup)
{
myucinf = Uinf;
myucsup = Usup;
myPOnS.Clear();
myPOnC.Clear();
mySqDist.Clear();
Standard_Integer i;
Standard_Integer NbT, NbU, NbV;
NbT = NbU = NbV = 10;
GeomAbs_CurveType myCtype = C.GetType();
switch(myCtype) {
case GeomAbs_Line:
{
switch(myStype) {
case GeomAbs_Sphere:
myExtElCS.Perform(C.Line(), myS->Sphere());
break;
case GeomAbs_Cylinder:
myExtElCS.Perform(C.Line(), myS->Cylinder());
break;
case GeomAbs_Plane:
myExtElCS.Perform(C.Line(), myS->Plane());
if (myExtElCS.IsParallel()) break;
case GeomAbs_Torus:
case GeomAbs_Cone:
case GeomAbs_BezierSurface:
case GeomAbs_BSplineSurface:
case GeomAbs_SurfaceOfRevolution:
case GeomAbs_SurfaceOfExtrusion:
case GeomAbs_OtherSurface:
{
Standard_Real cfirst = myucinf, clast = myucsup;
Standard_Real ufirst = myS->FirstUParameter(), ulast = myS->LastUParameter(),
vfirst = myS->FirstVParameter(), vlast = myS->LastVParameter();
if(Precision::IsInfinite(Abs(cfirst)) || Precision::IsInfinite(Abs(clast))) {
Bnd_Box aSurfBox;
BndLib_AddSurface::Add(*myS, ufirst, ulast, vfirst, vlast, Precision::Confusion(), aSurfBox);
Standard_Real xmin, ymin, zmin, xmax, ymax, zmax;
aSurfBox.Get(xmin, ymin, zmin, xmax, ymax, zmax);
Standard_Real tmin = Precision::Infinite(), tmax = -tmin;
gp_Lin aLin = C.Line();
if(!( Precision::IsInfinite(Abs(xmin)) || Precision::IsInfinite(Abs(xmax)) ||
Precision::IsInfinite(Abs(ymin)) || Precision::IsInfinite(Abs(ymax)) ||
Precision::IsInfinite(Abs(zmin)) || Precision::IsInfinite(Abs(zmax))) ) {
Extrema_ExtPElC anExt;
Extrema_POnCurv aPntOnLin;
Standard_Real aParOnLin;
Standard_Real lim = Precision::Infinite();
gp_Pnt aLimPntArray[8];
aLimPntArray[0].SetCoord(xmin, ymin, zmin);
aLimPntArray[1].SetCoord(xmax, ymin, zmin);
aLimPntArray[2].SetCoord(xmin, ymax, zmin);
aLimPntArray[3].SetCoord(xmax, ymax, zmin);
aLimPntArray[4].SetCoord(xmin, ymin, zmax);
aLimPntArray[5].SetCoord(xmax, ymin, zmax);
aLimPntArray[6].SetCoord(xmin, ymax, zmax);
aLimPntArray[7].SetCoord(xmax, ymax, zmax);
for(i = 0; i <= 7; i++) {
anExt.Perform(aLimPntArray[i], aLin, Precision::Confusion(), -lim, lim);
aPntOnLin = anExt.Point(1);
aParOnLin = aPntOnLin.Parameter();
tmin = Min(aParOnLin, tmin);
tmax = Max(aParOnLin, tmax);
}
}
else {
tmin = -1.e+50;
tmax = 1.e+50;
}
cfirst = Max(cfirst, tmin);
clast = Min(clast, tmax);
}
Extrema_GenExtCS Ext(C, *myS, NbT, NbU, NbV, cfirst, clast, ufirst, ulast,
vfirst, vlast, mytolC, mytolS);
myDone = Ext.IsDone();
if (myDone) {
Standard_Integer NbExt = Ext.NbExt();
Standard_Real T,U,V;
Extrema_POnCurv PC;
Extrema_POnSurf PS;
for (i = 1; i <= NbExt; i++) {
PC = Ext.PointOnCurve(i);
PS = Ext.PointOnSurface(i);
T = PC.Parameter();
PS.Parameter(U, V);
if (myS->IsUPeriodic())
U = ElCLib::InPeriod(U, myuinf, myuinf+myS->UPeriod());
if (myS->IsVPeriodic())
V = ElCLib::InPeriod(V, myvinf, myvinf+myS->VPeriod());
if ((myucinf-T) <= mytolC && (T-myucsup) <= mytolC &&
(myuinf-U) <= mytolS && (U-myusup) <= mytolS &&
(myvinf-V) <= mytolS && (V-myvsup) <= mytolS) {
mySqDist.Append(Ext.SquareDistance(i));
myPOnC.Append(PC);
myPOnS.Append(Extrema_POnSurf(U, V, PS.Value()));
}
}
}
return;
}
#ifndef DEB
default:
#endif
break;
}
break;
}
// Modified by skv - Thu Jul 7 12:29:34 2005 OCC9134 Begin
case GeomAbs_Circle:
{
if(myStype == GeomAbs_Cylinder) {
myExtElCS.Perform(C.Circle(), myS->Cylinder());
break;
}
}
case GeomAbs_Hyperbola:
{
if(myCtype == GeomAbs_Hyperbola && myStype == GeomAbs_Plane) {
// Modified by skv - Thu Jul 7 12:29:34 2005 OCC9134 End
myExtElCS.Perform(C.Hyperbola(), myS->Plane());
break;
}
}
default:
{
Extrema_GenExtCS Ext;
Ext.Initialize(*myS, NbU, NbV, mytolS);
if(myCtype == GeomAbs_Hyperbola) {
Standard_Real tmin = Max(-20., C.FirstParameter());
Standard_Real tmax = Min(20., C.LastParameter());
Ext.Perform(C, NbT, tmin, tmax, mytolC); // to avoid overflow
}
else {
if(myCtype == GeomAbs_Circle && NbT < 13) {
NbT = 13;
}
Ext.Perform(C, NbT, mytolC);
}
myDone = Ext.IsDone();
if (myDone) {
Standard_Integer NbExt = Ext.NbExt();
Standard_Real T,U,V;
Extrema_POnCurv PC;
Extrema_POnSurf PS;
for (i = 1; i <= NbExt; i++) {
PC = Ext.PointOnCurve(i);
PS = Ext.PointOnSurface(i);
T = PC.Parameter();
PS.Parameter(U, V);
if (C.IsPeriodic())
T = ElCLib::InPeriod(T, myucinf, myucinf+C.Period());
if (myS->IsUPeriodic())
U = ElCLib::InPeriod(U, myuinf, myuinf+myS->UPeriod());
if (myS->IsVPeriodic())
V = ElCLib::InPeriod(V, myvinf, myvinf+myS->VPeriod());
if ((myucinf-T) <= mytolC && (T-myucsup) <= mytolC &&
(myuinf-U) <= mytolS && (U-myusup) <= mytolS &&
(myvinf-V) <= mytolS && (V-myvsup) <= mytolS) {
mySqDist.Append(Ext.SquareDistance(i));
PC.SetValues(T, PC.Value());
myPOnC.Append(PC);
myPOnS.Append(Extrema_POnSurf(U, V, PS.Value()));
}
}
}
return;
}
break;
}
myDone = myExtElCS.IsDone();
if (myDone) {
myIsPar = myExtElCS.IsParallel();
if (myIsPar) {
mySqDist.Append(myExtElCS.SquareDistance(1));
}
else {
Standard_Integer NbExt = myExtElCS.NbExt();
Standard_Real U, V;
for (i = 1; i <= NbExt; i++) {
Extrema_POnCurv PC;
Extrema_POnSurf PS;
myExtElCS.Points(i, PC, PS);
Standard_Real Ucurve = PC.Parameter();
PS.Parameter(U, V);
if((myStype == GeomAbs_Sphere) || (myStype == GeomAbs_Cylinder)) {
U = ElCLib::InPeriod(U, myuinf, myuinf+2.*PI);
}
if ((myuinf-U) <= mytolS && (U-myusup) <= mytolS &&
(myvinf-V) <= mytolS && (V-myvsup) <= mytolS &&
(myucinf-Ucurve) <= mytolC && (Ucurve-myucsup) <= mytolC) {
mySqDist.Append(myExtElCS.SquareDistance(i));
myPOnS.Append(Extrema_POnSurf(U, V, PS.Value()));
myPOnC.Append(PC);
}
}
}
}
}
Standard_Boolean Extrema_ExtCS::IsDone() const
{
return myDone;
}
Standard_Boolean Extrema_ExtCS::IsParallel() const
{
return myIsPar;
}
Standard_Real Extrema_ExtCS::SquareDistance(const Standard_Integer N) const
{
if(!myDone) StdFail_NotDone::Raise();
if (myIsPar && N != 1) StdFail_InfiniteSolutions::Raise();
if ((N < 1) || (N > mySqDist.Length())) Standard_OutOfRange::Raise();
return mySqDist.Value(N);
}
Standard_Integer Extrema_ExtCS::NbExt() const
{
if(!myDone) StdFail_NotDone::Raise();
return mySqDist.Length();
}
void Extrema_ExtCS::Points(const Standard_Integer N,
Extrema_POnCurv& P1,
Extrema_POnSurf& P2) const
{
if(!myDone) StdFail_NotDone::Raise();
P1 = myPOnC.Value(N);
P2 = myPOnS.Value(N);
}
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