occt/src/BndLib/BndLib_AddSurface.hxx

// 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 <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Standard_Real.hxx>
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