// Created on: 1994-09-02 // Created by: Bruno DUMORTIER // Copyright (c) 1994-1999 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 _ProjLib_ProjectOnPlane_HeaderFile #define _ProjLib_ProjectOnPlane_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include class Adaptor3d_HCurve; class GeomAdaptor_HCurve; class Standard_OutOfRange; class Standard_NoSuchObject; class Standard_DomainError; class Standard_ConstructionError; class Standard_NotImplemented; class gp_Ax3; class gp_Dir; class gp_Pnt; class gp_Vec; class gp_Lin; class gp_Circ; class gp_Elips; class gp_Hypr; class gp_Parab; class Geom_BezierCurve; class Geom_BSplineCurve; //! Class used to project a 3d curve on a plane. The //! result will be a 3d curve. //! //! You can ask the projected curve to have the same //! parametrization as the original curve. //! //! The projection can be done along every direction not //! parallel to the plane. class ProjLib_ProjectOnPlane : public Adaptor3d_Curve { public: DEFINE_STANDARD_ALLOC //! Empty constructor. Standard_EXPORT ProjLib_ProjectOnPlane(); //! The projection will be normal to the Plane defined //! by the Ax3 . Standard_EXPORT ProjLib_ProjectOnPlane(const gp_Ax3& Pl); //! The projection will be along the direction on //! the plane defined by the Ax3 . //! raises if the direction is parallel to the //! plane . Standard_EXPORT ProjLib_ProjectOnPlane(const gp_Ax3& Pl, const gp_Dir& D); //! Sets the Curve and perform the projection. if //! is true, the parametrization //! of the Projected Curve will be the same as //! the parametrization of the initial curve . It //! meens: proj(C(u)) = PC(u) for each u. Otherwize, //! the parametrization may change. Standard_EXPORT void Load (const Handle(Adaptor3d_HCurve)& C, const Standard_Real Tolerance, const Standard_Boolean KeepParametrization = Standard_True); Standard_EXPORT const gp_Ax3& GetPlane() const; Standard_EXPORT const gp_Dir& GetDirection() const; Standard_EXPORT const Handle(Adaptor3d_HCurve)& GetCurve() const; Standard_EXPORT Standard_Real FirstParameter() const Standard_OVERRIDE; Standard_EXPORT Standard_Real LastParameter() const Standard_OVERRIDE; Standard_EXPORT GeomAbs_Shape Continuity() const Standard_OVERRIDE; //! If necessary, breaks the curve in intervals of //! continuity . And returns the number of //! intervals. Standard_EXPORT Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE; //! Stores in the parameters bounding the intervals //! of continuity . //! //! The array must provide enough room to accomodate //! for the parameters. i.e. T.Length() > NbIntervals() Standard_EXPORT void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE; //! Returns a curve equivalent of between //! parameters and . is used to //! test for 3d points confusion. //! If >= Standard_EXPORT Handle(Adaptor3d_HCurve) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const Standard_OVERRIDE; Standard_EXPORT Standard_Boolean IsClosed() const Standard_OVERRIDE; Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE; Standard_EXPORT Standard_Real Period() const Standard_OVERRIDE; //! Computes the point of parameter U on the curve. Standard_EXPORT gp_Pnt Value (const Standard_Real U) const Standard_OVERRIDE; //! Computes the point of parameter U on the curve. Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt& P) const Standard_OVERRIDE; //! 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_Pnt& P, gp_Vec& V) const Standard_OVERRIDE; //! Returns the point P of parameter U, the first and second //! derivatives V1 and V2. //! Raised if the continuity of the current interval //! is not C2. Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2) const Standard_OVERRIDE; //! 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_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3) const Standard_OVERRIDE; //! 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_Vec DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE; //! Returns the parametric resolution corresponding //! to the real space resolution . Standard_EXPORT Standard_Real Resolution (const Standard_Real R3d) const Standard_OVERRIDE; //! Returns the type of the curve in the current //! interval : Line, Circle, Ellipse, Hyperbola, //! Parabola, BezierCurve, BSplineCurve, OtherCurve. Standard_EXPORT GeomAbs_CurveType GetType() const Standard_OVERRIDE; Standard_EXPORT gp_Lin Line() const Standard_OVERRIDE; Standard_EXPORT gp_Circ Circle() const Standard_OVERRIDE; Standard_EXPORT gp_Elips Ellipse() const Standard_OVERRIDE; Standard_EXPORT gp_Hypr Hyperbola() const Standard_OVERRIDE; Standard_EXPORT gp_Parab Parabola() const Standard_OVERRIDE; Standard_EXPORT Standard_Integer Degree() const Standard_OVERRIDE; Standard_EXPORT Standard_Boolean IsRational() const Standard_OVERRIDE; Standard_EXPORT Standard_Integer NbPoles() const Standard_OVERRIDE; Standard_EXPORT Standard_Integer NbKnots() const Standard_OVERRIDE; //! Warning ! this will NOT make a copy of the //! Bezier Curve : If you want to modify //! the Curve please make a copy yourself //! Also it will NOT trim the surface to //! myFirst/Last. Standard_EXPORT Handle(Geom_BezierCurve) Bezier() const Standard_OVERRIDE; //! Warning ! this will NOT make a copy of the //! BSpline Curve : If you want to modify //! the Curve please make a copy yourself //! Also it will NOT trim the surface to //! myFirst/Last. Standard_EXPORT Handle(Geom_BSplineCurve) BSpline() const Standard_OVERRIDE; protected: private: Handle(Adaptor3d_HCurve) myCurve; gp_Ax3 myPlane; gp_Dir myDirection; Standard_Boolean myKeepParam; Standard_Real myFirstPar; Standard_Real myLastPar; Standard_Real myTolerance; GeomAbs_CurveType myType; Handle(GeomAdaptor_HCurve) myResult; Standard_Boolean myIsApprox; }; #endif // _ProjLib_ProjectOnPlane_HeaderFile