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#include <ShapeConstruct_Curve.ixx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_Failure.hxx>
#include <gp_Vec.hxx>
#include <gp_Dir.hxx>
#include <gp_Lin.hxx>
#include <ElCLib.hxx>
#include <Precision.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Geom_BezierCurve.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom_Line.hxx>
#include <Geom2d_BSplineCurve.hxx>
#include <Geom2d_BezierCurve.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <Geom2d_Line.hxx>
#include <GeomConvert.hxx>
#include <GeomAdaptor_HCurve.hxx>
#include <Approx_Curve3d.hxx>
#include <Geom2dConvert.hxx>
#include <Geom2dAdaptor_HCurve.hxx>
#include <Approx_Curve2d.hxx>
//sln 29.12.2001 OCC90 : Method FixKnots was added
//=======================================================================
//function : AdjustCurve
//purpose :
//=======================================================================
Standard_Boolean ShapeConstruct_Curve::AdjustCurve(const Handle(Geom_Curve)& C3D,const gp_Pnt& P1,const gp_Pnt& P2,const Standard_Boolean take1,const Standard_Boolean take2) const
{
if (!take1 && !take2) return Standard_True;
if (C3D->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
Handle(Geom_BSplineCurve) BSPL = Handle(Geom_BSplineCurve)::DownCast(C3D);
if (take1) BSPL->SetPole (1,P1);
if (take2) BSPL->SetPole (BSPL->NbPoles(),P2);
return Standard_True;
}
if (C3D->IsKind(STANDARD_TYPE(Geom_Line))) {
Handle(Geom_Line) L3D = Handle(Geom_Line)::DownCast(C3D);
// ATTENTION, P1 et P2 sont supposes tous deux pertinents ...
gp_Vec avec (P1,P2); gp_Dir adir (avec); gp_Lin alin (P1,adir);
Standard_Real theParam = ElCLib::Parameter(alin, L3D->Lin().Location());
alin.SetLocation (ElCLib::Value(theParam, alin));
L3D->SetLin (alin);
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : AdjustCurveSegment
//purpose :
//=======================================================================
Standard_Boolean ShapeConstruct_Curve::AdjustCurveSegment(const Handle(Geom_Curve)& C3D,const gp_Pnt& P1,const gp_Pnt& P2,const Standard_Real U1,const Standard_Real U2) const
{
if (C3D->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
Handle(Geom_BSplineCurve) BSPL = Handle(Geom_BSplineCurve)::DownCast(C3D);
// Forcer l extremite c est bien
// Propager sur le reste, c est pas mal non plus
if (U1 >= U2) return Standard_False;
Standard_Real UU1 = Max (U1,BSPL->FirstParameter());
Standard_Real UU2 = Min (U2,BSPL->LastParameter());
BSPL->Segment (UU1,UU2);
BSPL->SetPole (1,P1);
BSPL->SetPole (BSPL->NbPoles(),P2);
return Standard_True;
}
if (C3D->IsKind(STANDARD_TYPE(Geom_Line))) {
Handle(Geom_Line) L3D = Handle(Geom_Line)::DownCast(C3D);
// ATTENTION, P1 et P2 sont supposes tous deux pertinents ...
// NB : on ne s aide pas de U1 et U2
gp_Vec avec (P1,P2); gp_Dir adir (avec); gp_Lin alin (P1,adir);
Standard_Real theParam = ElCLib::Parameter(alin, L3D->Lin().Location());
alin.SetLocation (ElCLib::Value(theParam, alin));
L3D->SetLin (alin);
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : AdjustCurve2d
//purpose :
//=======================================================================
Standard_Boolean ShapeConstruct_Curve::AdjustCurve2d(const Handle(Geom2d_Curve)& C2D,const gp_Pnt2d& P1,const gp_Pnt2d& P2,const Standard_Boolean take1,const Standard_Boolean take2) const
{
if (!take1 && !take2) return Standard_True;
if (C2D->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve))) {
Handle(Geom2d_BSplineCurve) BSPL = Handle(Geom2d_BSplineCurve)::DownCast(C2D);
if (take1) BSPL->SetPole (1,P1);
if (take2) BSPL->SetPole (BSPL->NbPoles(),P2);
return Standard_True;
}
if (C2D->IsKind(STANDARD_TYPE(Geom2d_Line))) {
Handle(Geom2d_Line) L2D = Handle(Geom2d_Line)::DownCast(C2D);
// ATTENTION, P1 et P2 sont supposes tous deux pertinents ...
gp_Vec2d avec (P1,P2); gp_Dir2d adir (avec); gp_Lin2d alin (P1,adir);
Standard_Real theParam = ElCLib::Parameter(alin, L2D->Lin2d().Location());
alin.SetLocation (ElCLib::Value(theParam, alin));
L2D->SetLin2d (alin);
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : ConvertToBSpline
//purpose :
//=======================================================================
Handle(Geom_BSplineCurve) ShapeConstruct_Curve::ConvertToBSpline (const Handle(Geom_Curve) &C,
const Standard_Real first,
const Standard_Real last,
const Standard_Real prec) const
{
Handle(Geom_BSplineCurve) bspl;
if ( C->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) ) {
bspl = Handle(Geom_BSplineCurve)::DownCast ( C );
}
else if ( C->IsKind(STANDARD_TYPE(Geom_BezierCurve)) ||
C->IsKind(STANDARD_TYPE(Geom_Line)) ) {
Handle(Geom_Curve) tc = new Geom_TrimmedCurve ( C, first, last );
try {
OCC_CATCH_SIGNALS
bspl = GeomConvert::CurveToBSplineCurve(tc);
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in GeomConvert: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
}
if ( ! bspl.IsNull() ) {
// take segment if trim and range differ
Standard_Real fbsp = bspl->FirstParameter(), lbsp = bspl->LastParameter();
Standard_Boolean segment = Standard_False;
if ( first > fbsp + Precision::PConfusion() ) { fbsp = first; segment = Standard_True; }
if ( last < lbsp - Precision::PConfusion() ) { lbsp = last; segment = Standard_True; }
if ( ! segment ) return bspl;
try {
OCC_CATCH_SIGNALS
bspl = Handle(Geom_BSplineCurve)::DownCast ( bspl->Copy() );
bspl->Segment ( fbsp, lbsp );
return bspl;
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in Segment: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
}
// Approx is used for conics and when ordinary methods fail
Handle(Geom_Curve) newc = C;
if ( ! bspl.IsNull() ) { newc = bspl; bspl.Nullify(); }
try {
OCC_CATCH_SIGNALS
Approx_Curve3d Conv ( new GeomAdaptor_HCurve(newc,first,last),
prec, GeomAbs_C1, 9, 1000 );
if ( Conv.IsDone() || Conv.HasResult() )
bspl = Conv.Curve();
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in Approx_Curve3d: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
return bspl;
}
//=======================================================================
//function : ConvertToBSpline
//purpose :
//=======================================================================
Handle(Geom2d_BSplineCurve) ShapeConstruct_Curve::ConvertToBSpline (const Handle(Geom2d_Curve) &C,
const Standard_Real first,
const Standard_Real last,
const Standard_Real prec) const
{
Handle(Geom2d_BSplineCurve) bspl;
if ( C->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve)) ) {
bspl = Handle(Geom2d_BSplineCurve)::DownCast ( C );
}
else if ( C->IsKind(STANDARD_TYPE(Geom2d_BezierCurve)) ||
C->IsKind(STANDARD_TYPE(Geom2d_Line)) ) {
Handle(Geom2d_Curve) tc = new Geom2d_TrimmedCurve ( C, first, last );
try {
OCC_CATCH_SIGNALS
bspl = Geom2dConvert::CurveToBSplineCurve(tc);
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in Geom2dConvert: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
}
if ( ! bspl.IsNull() ) {
// take segment if trim and range differ
Standard_Real fbsp = bspl->FirstParameter(), lbsp = bspl->LastParameter();
Standard_Boolean segment = Standard_False;
if ( first > fbsp + Precision::PConfusion() ) { fbsp = first; segment = Standard_True; }
if ( last < lbsp - Precision::PConfusion() ) { lbsp = last; segment = Standard_True; }
if ( ! segment ) return bspl;
try {
OCC_CATCH_SIGNALS
bspl = Handle(Geom2d_BSplineCurve)::DownCast ( bspl->Copy() );
bspl->Segment ( fbsp, lbsp );
return bspl;
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in Segment: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
}
// Approx is used for conics and when ordinary methods fail
Handle(Geom2d_Curve) newc = C;
if ( ! bspl.IsNull() ) { newc = bspl; bspl.Nullify(); }
try {
OCC_CATCH_SIGNALS
Approx_Curve2d Conv ( new Geom2dAdaptor_HCurve(newc,first,last),
first, last,
prec, prec, GeomAbs_C1, 9, 1000 );
if ( Conv.IsDone() || Conv.HasResult() )
bspl = Conv.Curve();
}
catch ( Standard_Failure ) {
#ifdef DEB
cout << "Warning: ShapeConstruct_Curve::ConvertToBSpline(): Exception in Approx_Curve3d: ";
Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
}
return bspl;
}
//=======================================================================
//function : FixKnots
//purpose : Fix coincided knots
//=======================================================================
Standard_Boolean ShapeConstruct_Curve::FixKnots (Handle(TColStd_HArray1OfReal) &knots)
{
Standard_Boolean Fixed = Standard_False;
Standard_Integer nbKnots = knots->Length();
Standard_Real knotVal = knots->Value(1);
for ( Standard_Integer i=2; i <= nbKnots; i++ ) {
Standard_Real knotNext = knots->Value(i);
if ( knotNext - knotVal <= Epsilon(knotVal) ) {
knotNext = knotVal + 2. * Epsilon(knotVal);
knots->SetValue ( i, knotNext );
Fixed = Standard_True;
}
knotVal = knotNext;
}
return Fixed;
}
//=======================================================================
//function : FixKnots
//purpose : Fix coincided knots
//=======================================================================
Standard_Boolean ShapeConstruct_Curve::FixKnots (TColStd_Array1OfReal& knots)
{
Standard_Boolean Fixed = Standard_False;
Standard_Integer nbKnots = knots.Length();
Standard_Real knotVal = knots.Value(1);
for ( Standard_Integer i=2; i <= nbKnots; i++ ) {
Standard_Real knotNext = knots.Value(i);
if ( knotNext - knotVal <= Epsilon(knotVal) ) {
knotNext = knotVal + 2. * Epsilon(knotVal);
knots.SetValue ( i, knotNext );
Fixed = Standard_True;
}
knotVal = knotNext;
}
return Fixed;
}
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