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// File Extrema_ExtPS.cxx
//-----------------------------------------------------------------
// modif JMB le 17 Mai 1999.
// on trimme la surface a +/- 10000 plutot qu'a l'infini
// (sinon ca raise dans les Math)
// voir bug ID260065
//-----------------------------------------------------------------
#include <Extrema_ExtPS.ixx>
#include <Extrema_GenExtPS.hxx>
#include <StdFail_NotDone.hxx>
#include <Standard_NotImplemented.hxx>
#include <Precision.hxx>
#include <GeomAbs_CurveType.hxx>
#include <Adaptor3d_SurfaceOfLinearExtrusion.hxx>
#include <Adaptor3d_SurfaceOfRevolution.hxx>
#include <ElCLib.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 <Extrema_ExtPExtS.hxx>
#include <Extrema_ExtPRevS.hxx>
#include <Extrema_POnSurf.hxx>
#include <GeomAbs_IsoType.hxx>
//=======================================================================
//function : IsoIsDeg
//purpose :
//=======================================================================
static Standard_Boolean IsoIsDeg (const Adaptor3d_Surface& S,
const Standard_Real Param,
const GeomAbs_IsoType IT,
const Standard_Real TolMin,
const Standard_Real TolMax)
{
Standard_Real U1=0.,U2=0.,V1=0.,V2=0.,T;
Standard_Boolean Along = Standard_True;
U1 = S.FirstUParameter();
U2 = S.LastUParameter();
V1 = S.FirstVParameter();
V2 = S.LastVParameter();
gp_Vec D1U,D1V;
gp_Pnt P;
Standard_Real Step,D1NormMax;
if (IT == GeomAbs_IsoV)
{
Step = (U2 - U1)/10;
if(Step < Precision::PConfusion()) {
return Standard_False;
}
if(Step < Precision::PConfusion()) {
return Standard_False;
}
D1NormMax=0.;
for (T=U1;T<=U2;T=T+Step)
{
S.D1(T,Param,P,D1U,D1V);
D1NormMax=Max(D1NormMax,D1U.Magnitude());
}
if (D1NormMax >TolMax || D1NormMax < TolMin )
Along = Standard_False;
}
else
{
Step = (V2 - V1)/10;
if(Step < Precision::PConfusion()) {
return Standard_False;
}
if(Step < Precision::PConfusion()) {
return Standard_False;
}
D1NormMax=0.;
for (T=V1;T<=V2;T=T+Step)
{
S.D1(Param,T,P,D1U,D1V);
D1NormMax=Max(D1NormMax,D1V.Magnitude());
}
if (D1NormMax >TolMax || D1NormMax < TolMin )
Along = Standard_False;
}
return Along;
}
//=======================================================================
//function : TreatSolution
//purpose :
//=======================================================================
void Extrema_ExtPS::TreatSolution (const Extrema_POnSurf& PS,
const Standard_Real Val)
{
Standard_Real U, V;
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 ((myuinf-U) <= mytolu && (U-myusup) <= mytolu &&
(myvinf-V) <= mytolv && (V-myvsup) <= mytolv) {
myPoints.Append(Extrema_POnSurf (U, V, PS.Value()));
mySqDist.Append(Val);
}
}
//=======================================================================
//function : Extrema_ExtPS
//purpose :
//=======================================================================
Extrema_ExtPS::Extrema_ExtPS()
{
myDone = Standard_False;
}
//=======================================================================
//function : Extrema_ExtPS
//purpose :
//=======================================================================
Extrema_ExtPS::Extrema_ExtPS(const gp_Pnt& P,
const Adaptor3d_Surface& S,
const Standard_Real TolU,
const Standard_Real TolV,
const Extrema_ExtFlag F,
const Extrema_ExtAlgo A)
{
myExtPS.SetFlag(F);
myExtPS.SetAlgo(A);
Initialize(S, S.FirstUParameter(), S.LastUParameter(),
S.FirstVParameter(), S.LastVParameter(),
TolU, TolV);
Perform(P);
}
//=======================================================================
//function : Extrema_ExtPS
//purpose :
//=======================================================================
Extrema_ExtPS::Extrema_ExtPS(const gp_Pnt& P,
const Adaptor3d_Surface& S,
const Standard_Real Uinf,
const Standard_Real Usup,
const Standard_Real Vinf,
const Standard_Real Vsup,
const Standard_Real TolU,
const Standard_Real TolV,
const Extrema_ExtFlag F,
const Extrema_ExtAlgo A)
{
myExtPS.SetFlag(F);
myExtPS.SetAlgo(A);
Initialize(S, Uinf, Usup, Vinf, Vsup, TolU, TolV);
Perform(P);
}
//=======================================================================
//function : Initialize
//purpose :
//=======================================================================
void Extrema_ExtPS::Initialize(const Adaptor3d_Surface& S,
const Standard_Real Uinf,
const Standard_Real Usup,
const Standard_Real Vinf,
const Standard_Real Vsup,
const Standard_Real TolU,
const Standard_Real TolV)
{
myS = (Adaptor3d_SurfacePtr)&S;
myuinf = Uinf;
myusup = Usup;
myvinf = Vinf;
myvsup = Vsup;
if (Precision::IsNegativeInfinite(myuinf)) myuinf = -1e10;
if (Precision::IsPositiveInfinite(myusup)) myusup = 1e10;
if (Precision::IsNegativeInfinite(myvinf)) myvinf = -1e10;
if (Precision::IsPositiveInfinite(myvsup)) myvsup = 1e10;
mytolu = TolU;
mytolv = TolV;
mytype = myS->GetType();
Standard_Boolean isB = ( myS->GetType() == GeomAbs_BSplineSurface ||
myS->GetType() == GeomAbs_BezierSurface );
Standard_Integer nbU = (isB) ? 44 : 32;
Standard_Integer nbV = (isB) ? 44 : 32;
Standard_Boolean bUIsoIsDeg = Standard_False, bVIsoIsDeg = Standard_False;
if(myS->GetType() != GeomAbs_Plane) {
bUIsoIsDeg = IsoIsDeg(S, myuinf, GeomAbs_IsoU, 0., 1.e-9) ||
IsoIsDeg(S, myusup, GeomAbs_IsoU, 0., 1.e-9);
bVIsoIsDeg = IsoIsDeg(S, myvinf, GeomAbs_IsoV, 0., 1.e-9) ||
IsoIsDeg(S, myvsup, GeomAbs_IsoV, 0., 1.e-9);
}
if(bUIsoIsDeg) nbU = 300;
if(bVIsoIsDeg) nbV = 300;
myExtPS.Initialize(*myS, nbU, nbV, myuinf, myusup, myvinf, myvsup, mytolu, mytolv);
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
void Extrema_ExtPS::Perform(const gp_Pnt& P)
{
myPoints.Clear();
mySqDist.Clear();
Standard_Integer i;
P11 = myS->Value(myuinf, myvinf);
P12 = myS->Value(myuinf, myvsup);
P21 = myS->Value(myusup, myvinf);
P22 = myS->Value(myusup, myvsup);
d11 = P.SquareDistance(P11);
d12 = P.SquareDistance(P12);
d21 = P.SquareDistance(P21);
d22 = P.SquareDistance(P22);
switch(mytype) {
case GeomAbs_Cylinder:
myExtPElS.Perform(P, myS->Cylinder(), Precision::Confusion());
break;
case GeomAbs_Plane:
myExtPElS.Perform(P, myS->Plane(), Precision::Confusion());
break;
case GeomAbs_Cone:
myExtPElS.Perform(P, myS->Cone(), Precision::Confusion());
break;
case GeomAbs_Sphere:
myExtPElS.Perform(P, myS->Sphere(), Precision::Confusion());
break;
case GeomAbs_Torus:
myExtPElS.Perform(P, myS->Torus(), Precision::Confusion());
break;
case GeomAbs_SurfaceOfExtrusion: {
Extrema_ExtPExtS anExtPExtS(P,
Adaptor3d_SurfaceOfLinearExtrusion(myS->BasisCurve(),
myS->Direction()),
myuinf,myusup, myvinf,myvsup, mytolu,mytolv);
myDone = anExtPExtS.IsDone();
if (myDone)
for (i = 1; i <= anExtPExtS.NbExt(); i++) {
TreatSolution (anExtPExtS.Point(i), anExtPExtS.SquareDistance(i));
}
return;
}
case GeomAbs_SurfaceOfRevolution: {
Extrema_ExtPRevS anExtPRevS(P,
Adaptor3d_SurfaceOfRevolution(myS->BasisCurve(),
myS->AxeOfRevolution()),
myuinf, myusup,myvinf, myvsup,mytolu, mytolv);
myDone = anExtPRevS.IsDone();
if (myDone)
for (i = 1; i <= anExtPRevS.NbExt(); i++) {
TreatSolution (anExtPRevS.Point(i), anExtPRevS.SquareDistance(i));
}
return;
}
default:
myExtPS.Perform(P);
myDone = myExtPS.IsDone();
if (myDone)
for (i = 1; i <= myExtPS.NbExt(); i++)
TreatSolution (myExtPS.Point(i), myExtPS.SquareDistance(i));
return;
}
myDone = myExtPElS.IsDone();
if (myDone)
for (i = 1; i <= myExtPElS.NbExt(); i++)
TreatSolution (myExtPElS.Point(i), myExtPElS.SquareDistance(i));
return;
}
Standard_Boolean Extrema_ExtPS::IsDone() const
{
return myDone;
}
Standard_Real Extrema_ExtPS::SquareDistance(const Standard_Integer N) const
{
if(!myDone) StdFail_NotDone::Raise();
if ((N < 1) || (N > mySqDist.Length())) Standard_OutOfRange::Raise();
return mySqDist.Value(N);
}
Standard_Integer Extrema_ExtPS::NbExt() const
{
if(!myDone) StdFail_NotDone::Raise();
return mySqDist.Length();
}
Extrema_POnSurf Extrema_ExtPS::Point(const Standard_Integer N) const
{
if(!myDone) StdFail_NotDone::Raise();
return myPoints.Value(N);
}
void Extrema_ExtPS::TrimmedSquareDistances(Standard_Real& dUfVf,
Standard_Real& dUfVl,
Standard_Real& dUlVf,
Standard_Real& dUlVl,
gp_Pnt& PUfVf,
gp_Pnt& PUfVl,
gp_Pnt& PUlVf,
gp_Pnt& PUlVl) const
{
dUfVf = d11;
dUfVl = d12;
dUlVf = d21;
dUlVl = d22;
PUfVf = P11;
PUfVl = P12;
PUlVf = P21;
PUlVl = P22;
}
void Extrema_ExtPS::SetFlag(const Extrema_ExtFlag F)
{
myExtPS.SetFlag(F);
}
void Extrema_ExtPS::SetAlgo(const Extrema_ExtAlgo A)
{
myExtPS.SetAlgo(A);
}
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