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occt/src/Geom2dAdaptor/Geom2dAdaptor_Curve.cxx

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// File: Geom2dAdaptor_Curve.cxx
// Created: Fri Jun 4 10:39:27 1993
// Author: Bruno DUMORTIER
// <dub@topsn3>
// 20/02/97 : PMN -> Positionement local sur BSpline (PRO6902)
// 10/07/97 : PMN -> Pas de calcul de resolution dans Nb(Intervals) (PRO9248)
// 20/10/97 : JPI -> traitement des offset curves
#define No_Standard_RangeError
#define No_Standard_OutOfRange
#include <Geom2dAdaptor_Curve.ixx>
#include <Geom2d_OffsetCurve.hxx>
#include <Geom2dAdaptor_HCurve.hxx>
#include <Adaptor2d_HCurve2d.hxx>
#include <BSplCLib.hxx>
#include <GeomAbs_Shape.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColStd_Array1OfInteger.hxx>
#include <TColStd_HArray1OfInteger.hxx>
#include <Precision.hxx>
#include <gp.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <Geom2d_Circle.hxx>
#include <Geom2d_Line.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <Geom2d_BezierCurve.hxx>
#include <Geom2d_BSplineCurve.hxx>
#include <Geom2d_Ellipse.hxx>
#include <Geom2d_Parabola.hxx>
#include <Geom2d_Hyperbola.hxx>
//#include <Geom2dConvert_BSplineCurveKnotSplitting.hxx>
#include <Standard_OutOfRange.hxx>
#include <Standard_NoSuchObject.hxx>
#include <Standard_NullObject.hxx>
#include <Standard_NotImplemented.hxx>
#define myBspl (*((Handle(Geom2d_BSplineCurve)*)&myCurve))
#define PosTol Precision::PConfusion()/2
//=======================================================================
//function : LocalContinuity
//purpose : Computes the Continuity of a BSplineCurve
// between the parameters U1 and U2
// The continuity is C(d-m)
// with d = degree,
// m = max multiplicity of the Knots between U1 and U2
//=======================================================================
GeomAbs_Shape Geom2dAdaptor_Curve::LocalContinuity(const Standard_Real U1,
const Standard_Real U2)
const {
Standard_NoSuchObject_Raise_if(myTypeCurve!=GeomAbs_BSplineCurve," ");
Standard_Integer Nb = myBspl->NbKnots();
Standard_Integer Index1 = 0;
Standard_Integer Index2 = 0;
Standard_Real newFirst, newLast;
TColStd_Array1OfReal TK(1,Nb);
TColStd_Array1OfInteger TM(1,Nb);
myBspl->Knots(TK);
myBspl->Multiplicities(TM);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,U1,myBspl->IsPeriodic(),
1,Nb,Index1,newFirst);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,U2,myBspl->IsPeriodic(),
1,Nb,Index2,newLast);
if ( Abs(newFirst-TK(Index1+1))<Precision::PConfusion()) {
if (Index1 < Nb)Index1++;
}
if ( Abs(newLast-TK(Index2))<Precision::PConfusion())
Index2--;
Standard_Integer MultMax;
// attention aux courbes peridiques.
if ( (myBspl->IsPeriodic()) && (Index1 == Nb) )
Index1 = 1;
if ( Index2 - Index1 <= 0) {
MultMax = 100; // CN entre 2 Noeuds consecutifs
}
else {
MultMax = TM(Index1+1);
for(Standard_Integer i = Index1+1;i<=Index2;i++) {
if ( TM(i)>MultMax) MultMax=TM(i);
}
MultMax = myBspl->Degree() - MultMax;
}
if ( MultMax <= 0) {
return GeomAbs_C0;
}
else if ( MultMax == 1) {
return GeomAbs_C1;
}
else if ( MultMax == 2) {
return GeomAbs_C2;
}
else if ( MultMax == 3) {
return GeomAbs_C3;
}
else {
return GeomAbs_CN;
}
}
//=======================================================================
//function : Geom2dAdaptor_Curve
//purpose :
//=======================================================================
Geom2dAdaptor_Curve::Geom2dAdaptor_Curve()
: myTypeCurve(GeomAbs_OtherCurve),
myFirst(0.),
myLast(0.)
{
}
//=======================================================================
//function : Geom2dAdaptor_Curve
//purpose :
//=======================================================================
Geom2dAdaptor_Curve::Geom2dAdaptor_Curve(const Handle(Geom2d_Curve)& C)
{
Load(C);
}
//=======================================================================
//function : Geom2dAdaptor_Curve
//purpose :
//=======================================================================
Geom2dAdaptor_Curve::Geom2dAdaptor_Curve(const Handle(Geom2d_Curve)& C,
const Standard_Real UFirst,
const Standard_Real ULast)
{
Load(C,UFirst,ULast);
}
//=======================================================================
//function : Load
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::load(const Handle(Geom2d_Curve)& C,
const Standard_Real UFirst,
const Standard_Real ULast)
{
myFirst = UFirst;
myLast = ULast;
if ( myCurve != C) {
myCurve = C;
Handle(Standard_Type) TheType = C->DynamicType();
if ( TheType == STANDARD_TYPE(Geom2d_TrimmedCurve)) {
Load((*((Handle(Geom2d_TrimmedCurve)*)&C))->BasisCurve(),
UFirst,ULast);
}
else if ( TheType == STANDARD_TYPE(Geom2d_Circle)) {
myTypeCurve = GeomAbs_Circle;
}
else if ( TheType ==STANDARD_TYPE(Geom2d_Line)) {
myTypeCurve = GeomAbs_Line;
}
else if ( TheType == STANDARD_TYPE(Geom2d_Ellipse)) {
myTypeCurve = GeomAbs_Ellipse;
}
else if ( TheType == STANDARD_TYPE(Geom2d_Parabola)) {
myTypeCurve = GeomAbs_Parabola;
}
else if ( TheType == STANDARD_TYPE(Geom2d_Hyperbola)) {
myTypeCurve = GeomAbs_Hyperbola;
}
else if ( TheType == STANDARD_TYPE(Geom2d_BezierCurve)) {
myTypeCurve = GeomAbs_BezierCurve;
}
else if ( TheType == STANDARD_TYPE(Geom2d_BSplineCurve)) {
myTypeCurve = GeomAbs_BSplineCurve;
}
else {
myTypeCurve = GeomAbs_OtherCurve;
}
}
}
// --
// -- Global methods - Apply to the whole curve.
// --
//=======================================================================
//function : Continuity
//purpose :
//=======================================================================
GeomAbs_Shape Geom2dAdaptor_Curve::Continuity() const
{
if (myTypeCurve == GeomAbs_BSplineCurve) {
return LocalContinuity(myFirst, myLast);
}
else if (myCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))){
GeomAbs_Shape S =
(*((Handle(Geom2d_OffsetCurve)*)&myCurve))->BasisCurve()->Continuity();
switch(S){
case GeomAbs_CN: return GeomAbs_CN;
case GeomAbs_C3: return GeomAbs_C2;
case GeomAbs_C2: return GeomAbs_C1;
case GeomAbs_C1: return GeomAbs_C0;
default:
Standard_NoSuchObject::Raise("Geom2dAdaptor_Curve::Continuity");
}
}
else if (myTypeCurve == GeomAbs_OtherCurve) {
Standard_NoSuchObject::Raise("Geom2dAdaptor_Curve::Continuity");
}
else {
return GeomAbs_CN;
}
// portage WNT
return GeomAbs_CN;
}
//=======================================================================
//function : NbIntervals
//purpose :
//=======================================================================
Standard_Integer Geom2dAdaptor_Curve::NbIntervals(const GeomAbs_Shape S) const
{
Standard_Integer myNbIntervals = 1;
Standard_Integer NbSplit;
if (myTypeCurve == GeomAbs_BSplineCurve) {
Standard_Integer FirstIndex = myBspl->FirstUKnotIndex();
Standard_Integer LastIndex = myBspl->LastUKnotIndex();
TColStd_Array1OfInteger Inter (1, LastIndex-FirstIndex+1);
if ( S > Continuity()) {
Standard_Integer Cont;
switch ( S) {
case GeomAbs_G1:
case GeomAbs_G2:
Standard_DomainError::Raise("Geom2dAdaptor_Curve::NbIntervals");
break;
case GeomAbs_C0:
myNbIntervals = 1;
break;
case GeomAbs_C1:
case GeomAbs_C2:
case GeomAbs_C3:
case GeomAbs_CN:
{
if ( S == GeomAbs_C1) Cont = 1;
else if ( S == GeomAbs_C2) Cont = 2;
else if ( S == GeomAbs_C3) Cont = 3;
else Cont = myBspl->Degree();
Standard_Integer Degree = myBspl->Degree();
Standard_Integer NbKnots = myBspl->NbKnots();
TColStd_Array1OfInteger Mults (1, NbKnots);
myBspl->Multiplicities (Mults);
NbSplit = 1;
Standard_Integer Index = FirstIndex;
Inter (NbSplit) = Index;
Index++;
NbSplit++;
while (Index < LastIndex)
{
if (Degree - Mults (Index) < Cont)
{
Inter (NbSplit) = Index;
NbSplit++;
}
Index++;
}
Inter (NbSplit) = Index;
Standard_Integer NbInt = NbSplit-1;
Standard_Integer Nb = myBspl->NbKnots();
Standard_Integer Index1 = 0;
Standard_Integer Index2 = 0;
Standard_Real newFirst, newLast;
TColStd_Array1OfReal TK(1,Nb);
TColStd_Array1OfInteger TM(1,Nb);
myBspl->Knots(TK);
myBspl->Multiplicities(TM);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,myFirst,
myBspl->IsPeriodic(),
1,Nb,Index1,newFirst);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,myLast,
myBspl->IsPeriodic(),
1,Nb,Index2,newLast);
// On decale eventuellement les indices
// On utilise une "petite" tolerance, la resolution ne doit
// servir que pour les tres longue courbes....(PRO9248)
Standard_Real Eps = Min(Resolution(Precision::Confusion()),
Precision::PConfusion());
if ( Abs(newFirst-TK(Index1+1))< Eps) Index1++;
if ( newLast-TK(Index2)> Eps) Index2++;
myNbIntervals = 1;
for ( Standard_Integer i=1; i<=NbInt; i++)
if (Inter(i)>Index1 && Inter(i)<Index2) myNbIntervals++;
}
break;
}
}
}
else if (myCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))){
GeomAbs_Shape BaseS=GeomAbs_C0;
switch(S){
case GeomAbs_G1:
case GeomAbs_G2:
Standard_DomainError::Raise("GeomAdaptor_Curve::NbIntervals");
break;
case GeomAbs_C0: BaseS = GeomAbs_C1; break;
case GeomAbs_C1: BaseS = GeomAbs_C2; break;
case GeomAbs_C2: BaseS = GeomAbs_C3; break;
default: BaseS = GeomAbs_CN;
}
Geom2dAdaptor_Curve C
((*((Handle(Geom2d_OffsetCurve)*)&myCurve))->BasisCurve());
myNbIntervals = C.NbIntervals(BaseS);
}
return myNbIntervals;
}
//=======================================================================
//function : Intervals
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::Intervals(TColStd_Array1OfReal& T,
const GeomAbs_Shape S ) const
{
Standard_Integer myNbIntervals = 1;
Standard_Integer NbSplit;
if (myTypeCurve == GeomAbs_BSplineCurve) {
Standard_Integer FirstIndex = myBspl->FirstUKnotIndex();
Standard_Integer LastIndex = myBspl->LastUKnotIndex();
TColStd_Array1OfInteger Inter (1, LastIndex-FirstIndex+1);
if ( S > Continuity()) {
Standard_Integer Cont;
switch ( S) {
case GeomAbs_G1:
case GeomAbs_G2:
Standard_DomainError::Raise("Geom2dAdaptor_Curve::NbIntervals");
break;
case GeomAbs_C0:
myNbIntervals = 1;
break;
case GeomAbs_C1:
case GeomAbs_C2:
case GeomAbs_C3:
case GeomAbs_CN:
{
if ( S == GeomAbs_C1) Cont = 1;
else if ( S == GeomAbs_C2) Cont = 2;
else if ( S == GeomAbs_C3) Cont = 3;
else Cont = myBspl->Degree();
Standard_Integer Degree = myBspl->Degree();
Standard_Integer NbKnots = myBspl->NbKnots();
TColStd_Array1OfInteger Mults (1, NbKnots);
myBspl->Multiplicities (Mults);
NbSplit = 1;
Standard_Integer Index = FirstIndex;
Inter (NbSplit) = Index;
Index++;
NbSplit++;
while (Index < LastIndex)
{
if (Degree - Mults (Index) < Cont)
{
Inter (NbSplit) = Index;
NbSplit++;
}
Index++;
}
Inter (NbSplit) = Index;
Standard_Integer NbInt = NbSplit-1;
Standard_Integer Nb = myBspl->NbKnots();
Standard_Integer Index1 = 0;
Standard_Integer Index2 = 0;
Standard_Real newFirst, newLast;
TColStd_Array1OfReal TK(1,Nb);
TColStd_Array1OfInteger TM(1,Nb);
myBspl->Knots(TK);
myBspl->Multiplicities(TM);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,myFirst,
myBspl->IsPeriodic(),
1,Nb,Index1,newFirst);
BSplCLib::LocateParameter(myBspl->Degree(),TK,TM,myLast,
myBspl->IsPeriodic(),
1,Nb,Index2,newLast);
// On decale eventuellement les indices
// On utilise une "petite" tolerance, la resolution ne doit
// servir que pour les tres longue courbes....(PRO9248)
Standard_Real Eps = Min(Resolution(Precision::Confusion()),
Precision::PConfusion());
if ( Abs(newFirst-TK(Index1+1))< Eps) Index1++;
if ( newLast-TK(Index2)> Eps) Index2++;
Inter( 1) = Index1;
myNbIntervals = 1;
for ( Standard_Integer i=1; i<=NbInt; i++) {
if (Inter(i) > Index1 && Inter(i)<Index2 ) {
myNbIntervals++;
Inter(myNbIntervals) = Inter(i);
}
}
Inter(myNbIntervals+1) = Index2;
Standard_Integer ii = T.Lower() - 1;
for (Standard_Integer I=1;I<=myNbIntervals+1;I++) {
T(ii + I) = TK(Inter(I));
}
}
break;
}
}
}
else if (myCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))){
GeomAbs_Shape BaseS=GeomAbs_C0;
switch(S){
case GeomAbs_G1:
case GeomAbs_G2:
Standard_DomainError::Raise("GeomAdaptor_Curve::NbIntervals");
break;
case GeomAbs_C0: BaseS = GeomAbs_C1; break;
case GeomAbs_C1: BaseS = GeomAbs_C2; break;
case GeomAbs_C2: BaseS = GeomAbs_C3; break;
default: BaseS = GeomAbs_CN;
}
Geom2dAdaptor_Curve C
((*((Handle(Geom2d_OffsetCurve)*)&myCurve))->BasisCurve());
myNbIntervals = C.NbIntervals(BaseS);
C.Intervals(T, BaseS);
}
T( T.Lower() ) = myFirst;
T( T.Lower() + myNbIntervals ) = myLast;
}
//=======================================================================
//function : Trim
//purpose :
//=======================================================================
Handle(Adaptor2d_HCurve2d) Geom2dAdaptor_Curve::Trim
(const Standard_Real First,
const Standard_Real Last,
// const Standard_Real Tol) const
const Standard_Real ) const
{
Handle(Geom2dAdaptor_HCurve) HE = new Geom2dAdaptor_HCurve(myCurve,First,Last);
return HE;
}
//=======================================================================
//function : IsClosed
//purpose :
//=======================================================================
Standard_Boolean Geom2dAdaptor_Curve::IsClosed() const
{
if (!Precision::IsPositiveInfinite(myLast) &&
!Precision::IsNegativeInfinite(myFirst)) {
gp_Pnt2d Pd = Value(myFirst);
gp_Pnt2d Pf = Value(myLast);
return ( Pd.Distance(Pf) <= Precision::Confusion());
}
else
return Standard_False;
}
//=======================================================================
//function : IsPeriodic
//purpose :
//=======================================================================
Standard_Boolean Geom2dAdaptor_Curve::IsPeriodic() const
{
if (myCurve->IsPeriodic())
return IsClosed();
else
return Standard_False;
}
//=======================================================================
//function : Period
//purpose :
//=======================================================================
Standard_Real Geom2dAdaptor_Curve::Period() const
{
return myCurve->LastParameter() - myCurve->FirstParameter();
}
//=======================================================================
//function : Value
//purpose :
//=======================================================================
gp_Pnt2d Geom2dAdaptor_Curve::Value(const Standard_Real U) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve)&&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
return myBspl->LocalValue(U, Ideb, Ifin);
}
else {
return myCurve->Value( U);
}
}
//=======================================================================
//function : D0
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::D0(const Standard_Real U, gp_Pnt2d& P) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve)&&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
myBspl->LocalD0( U, Ideb, Ifin, P);
}
else {
myCurve->D0(U, P);
}
}
//=======================================================================
//function : D1
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::D1(const Standard_Real U,
gp_Pnt2d& P, gp_Vec2d& V) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve)&&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
myBspl->LocalD1( U, Ideb, Ifin, P, V);
}
else {
myCurve->D1( U, P, V);
}
}
//=======================================================================
//function : D2
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::D2(const Standard_Real U,
gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve)&&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
myBspl->LocalD2( U, Ideb, Ifin, P, V1, V2);
}
else {
myCurve->D2( U, P, V1, V2);
}
}
//=======================================================================
//function : D3
//purpose :
//=======================================================================
void Geom2dAdaptor_Curve::D3(const Standard_Real U,
gp_Pnt2d& P, gp_Vec2d& V1,
gp_Vec2d& V2, gp_Vec2d& V3) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve) &&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
myBspl->LocalD3( U, Ideb, Ifin, P, V1, V2, V3);
}
else {
myCurve->D3( U, P, V1, V2, V3);
}
}
//=======================================================================
//function : DN
//purpose :
//=======================================================================
gp_Vec2d Geom2dAdaptor_Curve::DN(const Standard_Real U,
const Standard_Integer N) const
{
if ( (myTypeCurve == GeomAbs_BSplineCurve) &&
(U==myFirst || U==myLast) ) {
Standard_Integer Ideb, Ifin;
if (U==myFirst) {
myBspl->LocateU(myFirst, PosTol, Ideb, Ifin);
if (Ideb<1) Ideb=1;
if (Ideb>=Ifin) Ifin = Ideb+1;
}
if (U==myLast) {
myBspl->LocateU(myLast, PosTol, Ideb, Ifin);
if (Ifin>myBspl->NbKnots()) Ifin = myBspl->NbKnots();
if (Ideb>=Ifin) Ideb = Ifin-1;
}
return myBspl->LocalDN( U, Ideb, Ifin, N);
}
else {
return myCurve->DN( U, N);
}
}
//=======================================================================
//function : Resolution
//purpose :
//=======================================================================
Standard_Real Geom2dAdaptor_Curve::Resolution(const Standard_Real Ruv) const {
switch ( myTypeCurve) {
case GeomAbs_Line :
return Ruv;
case GeomAbs_Circle: {
Standard_Real R = (*((Handle(Geom2d_Circle)*)&myCurve))->Circ2d().Radius();
if ( R > Ruv/2.)
return 2*ASin(Ruv/(2*R));
else
return 2*PI;
}
case GeomAbs_Ellipse: {
return Ruv / (*((Handle(Geom2d_Ellipse)*)&myCurve))->MajorRadius();
}
case GeomAbs_BezierCurve: {
Standard_Real res;
(*((Handle(Geom2d_BezierCurve)*)&myCurve))->Resolution(Ruv,res);
return res;
}
case GeomAbs_BSplineCurve: {
Standard_Real res;
(*((Handle(Geom2d_BSplineCurve)*)&myCurve))->Resolution(Ruv,res);
return res;
}
default:
return Precision::Parametric(Ruv);
}
}
// --
// -- The following methods must be called when GetType returned
// -- the corresponding type.
// --
//=======================================================================
//function : Line
//purpose :
//=======================================================================
gp_Lin2d Geom2dAdaptor_Curve::Line() const
{
Standard_NoSuchObject_Raise_if(myTypeCurve != GeomAbs_Line, "");
return (*((Handle(Geom2d_Line)*)&myCurve))->Lin2d();
}
//=======================================================================
//function : Circle
//purpose :
//=======================================================================
gp_Circ2d Geom2dAdaptor_Curve::Circle() const
{
Standard_NoSuchObject_Raise_if(myTypeCurve != GeomAbs_Circle, "");
return (*((Handle(Geom2d_Circle)*)&myCurve))->Circ2d();
}
//=======================================================================
//function : Ellipse
//purpose :
//=======================================================================
gp_Elips2d Geom2dAdaptor_Curve::Ellipse() const
{
Standard_NoSuchObject_Raise_if(myTypeCurve != GeomAbs_Ellipse, "");
return (*((Handle(Geom2d_Ellipse)*)&myCurve))->Elips2d();
}
//=======================================================================
//function : Hyperbola
//purpose :
//=======================================================================
gp_Hypr2d Geom2dAdaptor_Curve::Hyperbola() const
{
Standard_NoSuchObject_Raise_if(myTypeCurve != GeomAbs_Hyperbola, "");
return (*((Handle(Geom2d_Hyperbola)*)&myCurve))->Hypr2d();
}
//=======================================================================
//function : Parabola
//purpose :
//=======================================================================
gp_Parab2d Geom2dAdaptor_Curve::Parabola() const
{
Standard_NoSuchObject_Raise_if(myTypeCurve != GeomAbs_Parabola, "");
return (*((Handle(Geom2d_Parabola)*)&myCurve))->Parab2d();
}
//=======================================================================
//function : Degree
//purpose :
//=======================================================================
Standard_Integer Geom2dAdaptor_Curve::Degree() const
{
if (myTypeCurve == GeomAbs_BezierCurve)
return (*((Handle(Geom2d_BezierCurve)*)&myCurve))->Degree();
else if (myTypeCurve == GeomAbs_BSplineCurve)
return (*((Handle(Geom2d_BSplineCurve)*)&myCurve))->Degree();
else
Standard_NoSuchObject::Raise();
// portage WNT
return 0;
}
//=======================================================================
//function : IsRational
//purpose :
//=======================================================================
Standard_Boolean Geom2dAdaptor_Curve::IsRational() const {
switch( myTypeCurve) {
case GeomAbs_BSplineCurve:
return (*((Handle(Geom2d_BSplineCurve)*)&myCurve))->IsRational();
case GeomAbs_BezierCurve:
return (*((Handle(Geom2d_BezierCurve)*)&myCurve))->IsRational();
default:
return Standard_False;
}
}
//=======================================================================
//function : NbPoles
//purpose :
//=======================================================================
Standard_Integer Geom2dAdaptor_Curve::NbPoles() const
{
if (myTypeCurve == GeomAbs_BezierCurve)
return (*((Handle(Geom2d_BezierCurve)*)&myCurve))->NbPoles();
else if (myTypeCurve == GeomAbs_BSplineCurve)
return (*((Handle(Geom2d_BSplineCurve)*)&myCurve))->NbPoles();
else
Standard_NoSuchObject::Raise();
// portage WNT
return 0;
}
//=======================================================================
//function : NbKnots
//purpose :
//=======================================================================
Standard_Integer Geom2dAdaptor_Curve::NbKnots() const {
if ( myTypeCurve != GeomAbs_BSplineCurve)
Standard_NoSuchObject::Raise("Geom2dAdaptor_Curve::NbKnots");
return (*((Handle(Geom2d_BSplineCurve)*)&myCurve))->NbKnots();
}
//=======================================================================
//function : Bezier
//purpose :
//=======================================================================
Handle(Geom2d_BezierCurve) Geom2dAdaptor_Curve::Bezier() const
{
return *((Handle(Geom2d_BezierCurve)*)&myCurve);
}
//=======================================================================
//function : BSpline
//purpose :
//=======================================================================
Handle(Geom2d_BSplineCurve) Geom2dAdaptor_Curve::BSpline() const
{
return *((Handle(Geom2d_BSplineCurve)*)&myCurve);
}
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