// Created on: 1993-04-14 // Created by: Isabelle GRIGNON // 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 _BRepGProp_Face_HeaderFile #define _BRepGProp_Face_HeaderFile #include #include #include #include #include #include #include #include #include #include #include #include class TopoDS_Face; class gp_Pnt; class gp_Vec; class TopoDS_Edge; class gp_Pnt2d; class gp_Vec2d; class BRepGProp_Face { public: DEFINE_STANDARD_ALLOC //! Constructor. Initializes the object with a flag IsUseSpan //! that says if it is necessary to define spans on a face. //! This option has an effect only for BSpline faces. Spans //! are returned by the methods GetUKnots and GetTKnots. BRepGProp_Face(const Standard_Boolean IsUseSpan = Standard_False); //! Constructor. Initializes the object with the face and the //! flag IsUseSpan that says if it is necessary to define //! spans on a face. This option has an effect only for //! BSpline faces. Spans are returned by the methods GetUKnots //! and GetTKnots. BRepGProp_Face(const TopoDS_Face& F, const Standard_Boolean IsUseSpan = Standard_False); Standard_EXPORT void Load (const TopoDS_Face& F); Standard_EXPORT Standard_Integer VIntegrationOrder() const; //! Returns Standard_True if the face is not trimmed. Standard_Boolean NaturalRestriction() const; //! Returns the TopoDS face. const TopoDS_Face& GetFace() const; //! Returns the value of the boundary curve of the face. gp_Pnt2d Value2d (const Standard_Real U) const; Standard_EXPORT Standard_Integer SIntOrder (const Standard_Real Eps) const; Standard_EXPORT Standard_Integer SVIntSubs() const; Standard_EXPORT Standard_Integer SUIntSubs() const; Standard_EXPORT void UKnots (TColStd_Array1OfReal& Knots) const; Standard_EXPORT void VKnots (TColStd_Array1OfReal& Knots) const; Standard_EXPORT Standard_Integer LIntOrder (const Standard_Real Eps) const; Standard_EXPORT Standard_Integer LIntSubs() const; Standard_EXPORT void LKnots (TColStd_Array1OfReal& Knots) const; //! Returns the number of points required to do the //! integration in the U parametric direction with //! a good accuracy. Standard_EXPORT Standard_Integer UIntegrationOrder() const; //! Returns the parametric bounds of the Face. Standard_EXPORT void Bounds (Standard_Real& U1, Standard_Real& U2, Standard_Real& V1, Standard_Real& V2) const; //! Computes the point of parameter U, V on the Face and //! the normal to the face at this point. Standard_EXPORT void Normal (const Standard_Real U, const Standard_Real V, gp_Pnt& P, gp_Vec& VNor) const; //! Loading the boundary arc. //! Returns FALSE if edge has no P-Curve. Standard_EXPORT bool Load (const TopoDS_Edge& E); //! Returns the parametric value of the start point of //! the current arc of curve. Standard_Real FirstParameter() const; //! Returns the parametric value of the end point of //! the current arc of curve. Standard_Real LastParameter() const; //! Returns the number of points required to do the //! integration along the parameter of curve. Standard_EXPORT Standard_Integer IntegrationOrder() const; //! Returns the point of parameter U and the first derivative //! at this point of a boundary curve. void D12d (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1) const; //! Loading the boundary arc. This arc is either a top, bottom, //! left or right bound of a UV rectangle in which the //! parameters of surface are defined. //! If IsFirstParam is equal to Standard_True, the face is //! initialized by either left of bottom bound. Otherwise it is //! initialized by the top or right one. //! If theIsoType is equal to GeomAbs_IsoU, the face is //! initialized with either left or right bound. Otherwise - //! with either top or bottom one. Standard_EXPORT void Load (const Standard_Boolean IsFirstParam, const GeomAbs_IsoType theIsoType); //! Returns an array of U knots of the face. The first and last //! elements of the array will be theUMin and theUMax. The //! middle elements will be the U Knots of the face greater //! then theUMin and lower then theUMax in increasing order. //! If the face is not a BSpline, the array initialized with //! theUMin and theUMax only. Standard_EXPORT void GetUKnots (const Standard_Real theUMin, const Standard_Real theUMax, Handle(TColStd_HArray1OfReal)& theUKnots) const; //! Returns an array of combination of T knots of the arc and //! V knots of the face. The first and last elements of the //! array will be theTMin and theTMax. The middle elements will //! be the Knots of the arc and the values of parameters of //! arc on which the value points have V coordinates close to V //! knots of face. All the parameter will be greater then //! theTMin and lower then theTMax in increasing order. //! If the face is not a BSpline, the array initialized with //! theTMin and theTMax only. Standard_EXPORT void GetTKnots (const Standard_Real theTMin, const Standard_Real theTMax, Handle(TColStd_HArray1OfReal)& theTKnots) const; protected: private: BRepAdaptor_Surface mySurface; Geom2dAdaptor_Curve myCurve; Standard_Boolean mySReverse; Standard_Boolean myIsUseSpan; }; #include #endif // _BRepGProp_Face_HeaderFile