1 // Copyright (C) 2019-2020 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #include <GeomAPI_BSpline2d.h>
21 #include <GeomAPI_Pnt2d.h>
22 #include <GeomAPI_XY.h>
24 #include <Geom2d_BSplineCurve.hxx>
26 #define MY_BSPLINE (*(implPtr<Handle_Geom2d_BSplineCurve>()))
29 static Handle_Geom2d_BSplineCurve* newBSpline2d(
30 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
31 const std::list<double>& theWeights,
33 const bool thePeriodic);
36 static Handle_Geom2d_BSplineCurve* newBSpline2d(
37 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
38 const std::list<double>& theWeights,
39 const std::list<double>& theKnots,
40 const std::list<int>& theMults,
42 const bool thePeriodic)
44 if (theKnots.empty() || theMults.empty())
45 return newBSpline2d(thePoles, theWeights, theDegree, thePeriodic);
47 // collect arrays of poles, weights, knots and multiplicities
48 TColgp_Array1OfPnt2d aPoles(1, (int)thePoles.size());
49 TColStd_Array1OfReal aWeights(1, (int)theWeights.size());
50 TColStd_Array1OfReal aKnots(1, (int)theKnots.size());
51 TColStd_Array1OfInteger aMults(1, (int)theMults.size());
54 for (std::list<GeomPnt2dPtr>::const_iterator aPIt = thePoles.begin();
55 aPIt != thePoles.end(); ++aPIt, ++anIndex)
56 aPoles.SetValue(anIndex, gp_Pnt2d((*aPIt)->x(), (*aPIt)->y()));
58 for (std::list<double>::const_iterator aWIt = theWeights.begin();
59 aWIt != theWeights.end(); ++aWIt, ++anIndex)
60 aWeights.SetValue(anIndex, *aWIt);
62 for (std::list<double>::const_iterator aKIt = theKnots.begin();
63 aKIt != theKnots.end(); ++aKIt, ++anIndex)
64 aKnots.SetValue(anIndex, *aKIt);
66 for (std::list<int>::const_iterator aMIt = theMults.begin();
67 aMIt != theMults.end(); ++aMIt, ++anIndex)
68 aMults.SetValue(anIndex, *aMIt);
70 Handle(Geom2d_BSplineCurve) aCurve =
71 new Geom2d_BSplineCurve(aPoles, aWeights, aKnots, aMults, theDegree, thePeriodic);
72 return new Handle_Geom2d_BSplineCurve(aCurve);
75 Handle_Geom2d_BSplineCurve* newBSpline2d(
76 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
77 const std::list<double>& theWeights,
79 const bool thePeriodic)
81 int aNbKnots = (int)thePoles.size() - theDegree + 1;
83 return new Handle_Geom2d_BSplineCurve();
85 static const double aStartParam = 0.0;
86 static const double aEndParam = 1.0;
87 double aStep = aEndParam / (aNbKnots - 1);
89 std::list<double> aKnots;
90 for (double aKnot = aStartParam; anIndex < aNbKnots; ++anIndex, aKnot += aStep)
91 aKnots.push_back(aKnot);
92 aKnots.push_back(aEndParam);
94 std::list<int> aMults(aNbKnots - 2, 1);
95 aMults.push_front(theDegree + 1);
96 aMults.push_back(theDegree + 1);
98 return newBSpline2d(thePoles, theWeights, aKnots, aMults, theDegree, thePeriodic);
101 static Handle_Geom2d_BSplineCurve* newBSpline2d(
102 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
103 const std::list<double>& theWeights,
104 const bool thePeriodic)
107 if ((int)thePoles.size() <= aDegree)
108 aDegree = (int)thePoles.size() - 1;
110 return new Handle_Geom2d_BSplineCurve();
111 return newBSpline2d(thePoles, theWeights, aDegree, thePeriodic);
115 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
116 const std::list<double>& theWeights,
117 const bool thePeriodic)
118 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, thePeriodic))
121 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
124 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const int theDegree,
125 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
126 const std::list<double>& theWeights,
127 const std::list<double>& theKnots,
128 const std::list<int>& theMults,
129 const bool thePeriodic)
130 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, theKnots, theMults,
131 theDegree, thePeriodic))
134 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
137 bool GeomAPI_BSpline2d::isNull() const
139 return MY_BSPLINE.IsNull();
142 int GeomAPI_BSpline2d::degree() const
144 return MY_BSPLINE->Degree();
147 std::list<double> GeomAPI_BSpline2d::knots() const
149 const TColStd_Array1OfReal& aBSplKnots = MY_BSPLINE->Knots();
150 return std::list<double>(aBSplKnots.begin(), aBSplKnots.end());
153 std::list<int> GeomAPI_BSpline2d::mults() const
155 const TColStd_Array1OfInteger& aBSplMults = MY_BSPLINE->Multiplicities();
156 return std::list<int>(aBSplMults.begin(), aBSplMults.end());
159 void GeomAPI_BSpline2d::D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
162 MY_BSPLINE->D0(theU, aPnt);
163 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
166 void GeomAPI_BSpline2d::D1(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint,
167 std::shared_ptr<GeomAPI_XY>& theDerivative)
171 MY_BSPLINE->D1(theU, aPnt, aVec);
172 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
173 theDerivative.reset(new GeomAPI_XY(aVec.X(), aVec.Y()));