// Created on: 1995-07-24 // Created by: Modelistation // Copyright (c) 1995-1999 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 _BndLib_AddSurface_HeaderFile #define _BndLib_AddSurface_HeaderFile #include #include #include #include class Adaptor3d_Surface; class Bnd_Box; class gp_Cylinder; class gp_Cone; class gp_Sphere; //! computes the box from a surface //! Functions to add a surface to a bounding box. //! The surface is defined from a Geom surface. class BndLib_AddSurface { public: DEFINE_STANDARD_ALLOC //! Adds to the bounding box B the surface S //! B is then enlarged by the tolerance value Tol. //! Note: depending on the type of curve, one of the following //! representations of the surface S is used to include it in the bounding box B: //! - an exact representation if S is built from a plane, a //! cylinder, a cone, a sphere or a torus, //! - the poles of the surface if S is built from a Bezier //! surface or a BSpline surface, //! - the points of an approximation of the surface S in //! cases other than offset surfaces; //! - in the case of an offset surface, the basis surface is first //! included according to the previous rules; then the //! bounding box is enlarged by the offset value. //! Warning //! Do not use these functions to add a non-finite surface to //! the bounding box B. //! If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace. //! S is an adapted surface, that is, an object which is an interface between: //! - the services provided by a surface from the package Geom //! - and those required of the surface by the computation algorithm. //! The adapted surface is created in the following way: //! Handle(Geom_Surface) mysurface = ... ; //! GeomAdaptor_Surface S(mysurface); //! The bounding box B is then enlarged by adding this surface: //! Bnd_Box B; //! // ... //! Standard_Real Tol = ... ; //! AddSurface::Add ( S, Tol, B ); Standard_EXPORT static void Add (const Adaptor3d_Surface& S, const Standard_Real Tol, Bnd_Box& B); //! Adds to the bounding box B the surface S //! the patch of the surface S limited in the u parametric //! direction by the two parameter values UMin, UMax, and //! in the v parametric direction by the two parameter //! values VMin, VMax. //! Note: depending on the type of curve, one of the following //! representations of the surface S is used to include it in the bounding box B: //! - an exact representation if S is built from a plane, a //! cylinder, a cone, a sphere or a torus, //! - the poles of the surface if S is built from a Bezier //! surface or a BSpline surface, //! - the points of an approximation of the surface S in //! cases other than offset surfaces; //! - in the case of an offset surface, the basis surface is first //! included according to the previous rules; then the //! bounding box is enlarged by the offset value. //! Warning //! Do not use these functions to add a non-finite surface to //! the bounding box B. //! If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace. //! S is an adapted surface, that is, an object which is an interface between: //! - the services provided by a surface from the package Geom //! - and those required of the surface by the computation algorithm. //! The adapted surface is created in the following way: //! Handle(Geom_Surface) mysurface = ... ; //! GeomAdaptor_Surface S(mysurface); //! The bounding box B is then enlarged by adding this surface: //! Bnd_Box B; //! // ... //! Standard_Real Tol = ... ; //! AddSurface::Add ( S, Tol, B ); Standard_EXPORT static void Add (const Adaptor3d_Surface& S, const Standard_Real UMin, const Standard_Real UMax, const Standard_Real VMin, const Standard_Real VMax, const Standard_Real Tol, Bnd_Box& B); //! Adds the surface S to the bounding box B. //! This algorithm builds precise bounding box Standard_EXPORT static void AddOptimal (const Adaptor3d_Surface& S, const Standard_Real Tol, Bnd_Box& B); Standard_EXPORT static void AddOptimal (const Adaptor3d_Surface& S, const Standard_Real UMin, const Standard_Real UMax, const Standard_Real VMin, const Standard_Real VMax, const Standard_Real Tol, Bnd_Box& B); //! Adds to the bounding box B the surface S //! using numerical minimization algorithms //! This method is used in AddOptimal for not analytical surfaces and torus. //! if Tol < Precision::Confusion(), Precision::Confusion is used as computation tolerance Standard_EXPORT static void AddGenSurf(const Adaptor3d_Surface& S, const Standard_Real UMin, const Standard_Real UMax, const Standard_Real VMin, const Standard_Real VMax, const Standard_Real Tol, Bnd_Box& B); protected: private: }; #endif // _BndLib_AddSurface_HeaderFile