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,
32 const std::list<double>& theKnots,
33 const std::list<int>& theMults,
35 const bool thePeriodic)
37 // collect arrays of poles, weights, knots and multiplicities
38 TColgp_Array1OfPnt2d aPoles(1, (int)thePoles.size());
39 TColStd_Array1OfReal aWeights(1, (int)theWeights.size());
40 TColStd_Array1OfReal aKnots(1, (int)theKnots.size());
41 TColStd_Array1OfInteger aMults(1, (int)theMults.size());
44 for (std::list<GeomPnt2dPtr>::const_iterator aPIt = thePoles.begin();
45 aPIt != thePoles.end(); ++aPIt, ++anIndex)
46 aPoles.SetValue(anIndex, gp_Pnt2d((*aPIt)->x(), (*aPIt)->y()));
48 for (std::list<double>::const_iterator aWIt = theWeights.begin();
49 aWIt != theWeights.end(); ++aWIt, ++anIndex)
50 aWeights.SetValue(anIndex, *aWIt);
52 for (std::list<double>::const_iterator aKIt = theKnots.begin();
53 aKIt != theKnots.end(); ++aKIt, ++anIndex)
54 aKnots.SetValue(anIndex, *aKIt);
56 for (std::list<int>::const_iterator aMIt = theMults.begin();
57 aMIt != theMults.end(); ++aMIt, ++anIndex)
58 aMults.SetValue(anIndex, *aMIt);
60 Handle(Geom2d_BSplineCurve) aCurve =
61 new Geom2d_BSplineCurve(aPoles, aWeights, aKnots, aMults, theDegree, thePeriodic);
62 return new Handle_Geom2d_BSplineCurve(aCurve);
65 static Handle_Geom2d_BSplineCurve* newBSpline2d(
66 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
67 const std::list<double>& theWeights,
69 const bool thePeriodic)
71 int aNbKnots = (int)thePoles.size() - theDegree + 1;
73 return new Handle_Geom2d_BSplineCurve();
75 static const double aStartParam = 0.0;
76 static const double aEndParam = 1.0;
77 double aStep = aEndParam / (aNbKnots - 1);
79 std::list<double> aKnots;
80 for (double aKnot = aStartParam; anIndex < aNbKnots; ++anIndex, aKnot += aStep)
81 aKnots.push_back(aKnot);
82 aKnots.push_back(aEndParam);
84 std::list<int> aMults(aNbKnots - 2, 1);
85 aMults.push_front(theDegree + 1);
86 aMults.push_back(theDegree + 1);
88 return newBSpline2d(thePoles, theWeights, aKnots, aMults, theDegree, thePeriodic);
91 static Handle_Geom2d_BSplineCurve* newBSpline2d(
92 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
93 const std::list<double>& theWeights,
94 const bool thePeriodic)
97 if ((int)thePoles.size() <= aDegree)
98 aDegree = (int)thePoles.size() - 1;
100 return new Handle_Geom2d_BSplineCurve();
101 return newBSpline2d(thePoles, theWeights, aDegree, thePeriodic);
105 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
106 const std::list<double>& theWeights,
107 const bool thePeriodic)
108 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, thePeriodic))
111 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
114 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const int theDegree,
115 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
116 const std::list<double>& theWeights,
117 const std::list<double>& theKnots,
118 const std::list<int>& theMults,
119 const bool thePeriodic)
120 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, theKnots, theMults,
121 theDegree, thePeriodic))
124 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
127 bool GeomAPI_BSpline2d::isNull() const
129 return MY_BSPLINE.IsNull();
132 int GeomAPI_BSpline2d::degree() const
134 return MY_BSPLINE->Degree();
137 std::list<double> GeomAPI_BSpline2d::knots() const
139 const TColStd_Array1OfReal& aBSplKnots = MY_BSPLINE->Knots();
140 return std::list<double>(aBSplKnots.begin(), aBSplKnots.end());
143 std::list<int> GeomAPI_BSpline2d::mults() const
145 const TColStd_Array1OfInteger& aBSplMults = MY_BSPLINE->Multiplicities();
146 return std::list<int>(aBSplMults.begin(), aBSplMults.end());
149 void GeomAPI_BSpline2d::D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
152 MY_BSPLINE->D0(theU, aPnt);
153 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
156 void GeomAPI_BSpline2d::D1(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint,
157 std::shared_ptr<GeomAPI_XY>& theDerivative)
161 MY_BSPLINE->D1(theU, aPnt, aVec);
162 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
163 theDerivative.reset(new GeomAPI_XY(aVec.X(), aVec.Y()));