// Created on: 1993-04-01 // Created by: Modelistation // Copyright (c) 1993-1999 Matra Datavision // Copyright (c) 1999-2014 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #ifndef _HLRBRep_Curve_HeaderFile #define _HLRBRep_Curve_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include #include #include class TopoDS_Edge; class gp_Pnt; class gp_Vec; class gp_Pnt2d; class gp_Dir2d; class gp_Vec2d; class gp_Lin2d; class gp_Circ2d; class gp_Elips2d; class gp_Hypr2d; class gp_Parab2d; class Geom_BSplineCurve; class HLRAlgo_Projector; //! Defines a 2d curve by projection of a 3D curve on //! a plane with an optional perspective //! transformation. class HLRBRep_Curve { public: DEFINE_STANDARD_ALLOC //! Creates an undefined Curve. Standard_EXPORT HLRBRep_Curve(); void Projector (const HLRAlgo_Projector* Proj) {myProj = Proj;} //! Returns the 3D curve. BRepAdaptor_Curve& Curve(); //! Sets the 3D curve to be projected. Standard_EXPORT void Curve (const TopoDS_Edge& E); //! Returns the 3D curve. const BRepAdaptor_Curve& GetCurve() const; //! Returns the parameter on the 2d curve from the //! parameter on the 3d curve. Standard_EXPORT Standard_Real Parameter2d (const Standard_Real P3d) const; //! Returns the parameter on the 3d curve from the //! parameter on the 2d curve. Standard_EXPORT Standard_Real Parameter3d (const Standard_Real P2d) const; //! Update the minmax and the internal data Standard_EXPORT Standard_Real Update (Standard_Real TotMin[16], Standard_Real TotMax[16]); //! Update the minmax returns tol for enlarge; Standard_EXPORT Standard_Real UpdateMinMax (Standard_Real TotMin[16], Standard_Real TotMax[16]); //! Computes the Z coordinate of the point of //! parameter U on the curve in the viewing coordinate system Standard_EXPORT Standard_Real Z (const Standard_Real U) const; //! Computes the 3D point of parameter U on the //! curve. gp_Pnt Value3D (const Standard_Real U) const; //! Computes the 3D point of parameter U on the //! curve. void D0 (const Standard_Real U, gp_Pnt& P) const; //! Computes the point of parameter U on the curve //! with its first derivative. void D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& V) const; //! Depending on computes the 2D point and //! tangent on the curve at sart (or at end). If the first //! derivative is null look after at start (or before at end) //! with the second derivative. Standard_EXPORT void Tangent (const Standard_Boolean AtStart, gp_Pnt2d& P, gp_Dir2d& D) const; Standard_Real FirstParameter() const; Standard_Real LastParameter() const; GeomAbs_Shape Continuity() const; //! If necessary, breaks the curve in intervals of //! continuity . And returns the number of //! intervals. Standard_Integer NbIntervals (const GeomAbs_Shape S) const; //! Stores in the parameters bounding the intervals //! of continuity . //! //! The array must provide enough room to accommodate //! for the parameters. i.e. T.Length() > NbIntervals() void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const; Standard_Boolean IsClosed() const; Standard_Boolean IsPeriodic() const; Standard_Real Period() const; //! Computes the point of parameter U on the curve. gp_Pnt2d Value (const Standard_Real U) const; //! Computes the point of parameter U on the curve. Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt2d& P) const; //! Computes the point of parameter U on the curve //! with its first derivative. //! Raised if the continuity of the current interval //! is not C1. Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V) const; //! Raised if the continuity of the current interval //! is not C2. Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const; //! Returns the point P of parameter U, the first, the second //! and the third derivative. //! Raised if the continuity of the current interval //! is not C3. Standard_EXPORT void D3 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2, gp_Vec2d& V3) const; //! The returned vector gives the value of the derivative for the //! order of derivation N. //! Raised if the continuity of the current interval //! is not CN. //! Raised if N < 1. Standard_EXPORT gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const; //! Returns the parametric resolution corresponding //! to the real space resolution . Standard_Real Resolution (const Standard_Real R3d) const; //! Returns the type of the curve in the current //! interval : Line, Circle, Ellipse, Hyperbola, //! Parabola, BezierCurve, BSplineCurve, OtherCurve. GeomAbs_CurveType GetType() const; Standard_EXPORT gp_Lin2d Line() const; Standard_EXPORT gp_Circ2d Circle() const; Standard_EXPORT gp_Elips2d Ellipse() const; Standard_EXPORT gp_Hypr2d Hyperbola() const; Standard_EXPORT gp_Parab2d Parabola() const; Standard_Boolean IsRational() const; Standard_Integer Degree() const; Standard_Integer NbPoles() const; Standard_EXPORT void Poles (TColgp_Array1OfPnt2d& TP) const; Standard_EXPORT void Poles (const Handle(Geom_BSplineCurve)& aCurve, TColgp_Array1OfPnt2d& TP) const; Standard_EXPORT void PolesAndWeights (TColgp_Array1OfPnt2d& TP, TColStd_Array1OfReal& TW) const; Standard_EXPORT void PolesAndWeights (const Handle(Geom_BSplineCurve)& aCurve, TColgp_Array1OfPnt2d& TP, TColStd_Array1OfReal& TW) const; Standard_Integer NbKnots() const; Standard_EXPORT void Knots (TColStd_Array1OfReal& kn) const; Standard_EXPORT void Multiplicities (TColStd_Array1OfInteger& mu) const; protected: private: BRepAdaptor_Curve myCurve; GeomAbs_CurveType myType; const HLRAlgo_Projector* myProj; Standard_Real myOX; Standard_Real myOZ; Standard_Real myVX; Standard_Real myVZ; Standard_Real myOF; }; #include #endif // _HLRBRep_Curve_HeaderFile