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>
25 #include <Geom2dAPI_ProjectPointOnCurve.hxx>
26 #include <GeomLib_Tool.hxx>
27 #include <Precision.hxx>
29 #define MY_BSPLINE (*(implPtr<Handle_Geom2d_BSplineCurve>()))
32 static Handle_Geom2d_BSplineCurve* newBSpline2d(
33 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
34 const std::list<double>& theWeights,
36 const bool thePeriodic);
39 static Handle_Geom2d_BSplineCurve* newBSpline2d(
40 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
41 const std::list<double>& theWeights,
42 const std::list<double>& theKnots,
43 const std::list<int>& theMults,
45 const bool thePeriodic)
47 if (theKnots.empty() || theMults.empty())
48 return newBSpline2d(thePoles, theWeights, theDegree, thePeriodic);
50 // collect arrays of poles, weights, knots and multiplicities
51 TColgp_Array1OfPnt2d aPoles(1, (int)thePoles.size());
52 TColStd_Array1OfReal aWeights(1, (int)theWeights.size());
53 TColStd_Array1OfReal aKnots(1, (int)theKnots.size());
54 TColStd_Array1OfInteger aMults(1, (int)theMults.size());
57 for (std::list<GeomPnt2dPtr>::const_iterator aPIt = thePoles.begin();
58 aPIt != thePoles.end(); ++aPIt, ++anIndex)
59 aPoles.SetValue(anIndex, gp_Pnt2d((*aPIt)->x(), (*aPIt)->y()));
61 for (std::list<double>::const_iterator aWIt = theWeights.begin();
62 aWIt != theWeights.end(); ++aWIt, ++anIndex)
63 aWeights.SetValue(anIndex, *aWIt);
65 for (std::list<double>::const_iterator aKIt = theKnots.begin();
66 aKIt != theKnots.end(); ++aKIt, ++anIndex)
67 aKnots.SetValue(anIndex, *aKIt);
69 for (std::list<int>::const_iterator aMIt = theMults.begin();
70 aMIt != theMults.end(); ++aMIt, ++anIndex)
71 aMults.SetValue(anIndex, *aMIt);
73 Handle(Geom2d_BSplineCurve) aCurve =
74 new Geom2d_BSplineCurve(aPoles, aWeights, aKnots, aMults, theDegree, thePeriodic);
75 return new Handle_Geom2d_BSplineCurve(aCurve);
78 Handle_Geom2d_BSplineCurve* newBSpline2d(
79 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
80 const std::list<double>& theWeights,
82 const bool thePeriodic)
84 int aNbKnots = (int)thePoles.size() - theDegree + 1;
86 return new Handle_Geom2d_BSplineCurve();
88 static const double aStartParam = 0.0;
89 static const double aEndParam = 1.0;
90 double aStep = aEndParam / (aNbKnots - 1);
92 std::list<double> aKnots;
93 for (double aKnot = aStartParam; anIndex < aNbKnots; ++anIndex, aKnot += aStep)
94 aKnots.push_back(aKnot);
95 aKnots.push_back(aEndParam);
97 std::list<int> aMults(aNbKnots - 2, 1);
98 aMults.push_front(theDegree + 1);
99 aMults.push_back(theDegree + 1);
101 return newBSpline2d(thePoles, theWeights, aKnots, aMults, theDegree, thePeriodic);
104 static Handle_Geom2d_BSplineCurve* newBSpline2d(
105 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
106 const std::list<double>& theWeights,
107 const bool thePeriodic)
110 if ((int)thePoles.size() <= aDegree)
111 aDegree = (int)thePoles.size() - 1;
113 return new Handle_Geom2d_BSplineCurve();
114 return newBSpline2d(thePoles, theWeights, aDegree, thePeriodic);
118 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
119 const std::list<double>& theWeights,
120 const bool thePeriodic)
121 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, thePeriodic))
124 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
127 GeomAPI_BSpline2d::GeomAPI_BSpline2d(const int theDegree,
128 const std::list<std::shared_ptr<GeomAPI_Pnt2d> >& thePoles,
129 const std::list<double>& theWeights,
130 const std::list<double>& theKnots,
131 const std::list<int>& theMults,
132 const bool thePeriodic)
133 : GeomAPI_Interface(newBSpline2d(thePoles, theWeights, theKnots, theMults,
134 theDegree, thePeriodic))
137 throw Standard_ConstructionError("GeomAPI_BSpline2d: Impossible to create B-spline curve");
140 bool GeomAPI_BSpline2d::isNull() const
142 return MY_BSPLINE.IsNull();
145 int GeomAPI_BSpline2d::degree() const
147 return MY_BSPLINE->Degree();
150 std::list<double> GeomAPI_BSpline2d::knots() const
152 const TColStd_Array1OfReal& aBSplKnots = MY_BSPLINE->Knots();
153 return std::list<double>(aBSplKnots.begin(), aBSplKnots.end());
156 std::list<int> GeomAPI_BSpline2d::mults() const
158 const TColStd_Array1OfInteger& aBSplMults = MY_BSPLINE->Multiplicities();
159 return std::list<int>(aBSplMults.begin(), aBSplMults.end());
162 const bool GeomAPI_BSpline2d::parameter(const std::shared_ptr<GeomAPI_Pnt2d> thePoint,
163 const double theTolerance,
164 double& theParameter) const
166 return GeomLib_Tool::Parameter(MY_BSPLINE, thePoint->impl<gp_Pnt2d>(),
167 theTolerance, theParameter) == Standard_True;
170 void GeomAPI_BSpline2d::D0(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
173 MY_BSPLINE->D0(theU, aPnt);
174 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
177 void GeomAPI_BSpline2d::D1(const double theU, std::shared_ptr<GeomAPI_Pnt2d>& thePoint,
178 std::shared_ptr<GeomAPI_XY>& theDerivative)
182 MY_BSPLINE->D1(theU, aPnt, aVec);
183 thePoint.reset(new GeomAPI_Pnt2d(aPnt.X(), aPnt.Y()));
184 theDerivative.reset(new GeomAPI_XY(aVec.X(), aVec.Y()));