1 // Created on: 1996-01-25 2 // Created by: Laurent PAINNOT 3 // Copyright (c) 1996-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 8 // This library is free software; you can redistribute it and/or modify it under 9 // the terms of the GNU Lesser General Public License version 2.1 as published 10 // by the Free Software Foundation, with special exception defined in the file 11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 12 // distribution for complete text of the license and disclaimer of any warranty. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _Extrema_GenLocateExtCS_HeaderFile 18 #define _Extrema_GenLocateExtCS_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_DefineAlloc.hxx> 22 #include <Standard_Handle.hxx> 23 24 #include <Standard_Boolean.hxx> 25 #include <Standard_Real.hxx> 26 #include <Extrema_POnCurv.hxx> 27 #include <Extrema_POnSurf.hxx> 28 class Adaptor3d_Curve; 29 class Adaptor3d_Surface; 30 31 32 //! With two close points it calculates the distance 33 //! between two surfaces. 34 //! This distance can be a minimum or a maximum. 35 class Extrema_GenLocateExtCS 36 { 37 public: 38 39 DEFINE_STANDARD_ALLOC 40 41 42 Standard_EXPORT Extrema_GenLocateExtCS(); 43 44 //! Calculates the distance with two close points. 45 //! The close points are defined by the parameter values 46 //! T for C and (U,V) for S. 47 //! The function F(t,u,v)=distance(C(t),S(u,v)) 48 //! has an extremun when gradient(F)=0. The algorithm searches 49 //! a zero near the close points. 50 Standard_EXPORT Extrema_GenLocateExtCS(const Adaptor3d_Curve& C, const Adaptor3d_Surface& S, const Standard_Real T, const Standard_Real U, const Standard_Real V, const Standard_Real Tol1, const Standard_Real Tol2); 51 52 Standard_EXPORT void Perform (const Adaptor3d_Curve& C, const Adaptor3d_Surface& S, const Standard_Real T, const Standard_Real U, const Standard_Real V, const Standard_Real Tol1, const Standard_Real Tol2); 53 54 //! Returns True if the distance is found. 55 Standard_EXPORT Standard_Boolean IsDone() const; 56 57 //! Returns the value of the extremum square distance. 58 Standard_EXPORT Standard_Real SquareDistance() const; 59 60 //! Returns the point of the extremum distance on C. 61 Standard_EXPORT const Extrema_POnCurv& PointOnCurve() const; 62 63 //! Returns the point of the extremum distance on S. 64 Standard_EXPORT const Extrema_POnSurf& PointOnSurface() const; 65 66 67 68 69 protected: 70 71 72 73 74 75 private: 76 77 78 79 Standard_Boolean myDone; 80 Standard_Real mySqDist; 81 Extrema_POnCurv myPoint1; 82 Extrema_POnSurf myPoint2; 83 84 85 }; 86 87 88 89 90 91 92 93 #endif // _Extrema_GenLocateExtCS_HeaderFile 94