transform.h Source File

00001 //
00002 // transform.h
00003 //
00004 // Copyright (C) 1996 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifndef _math_optimize_transform_h
00029 #define _math_optimize_transform_h
00030 
00031 #ifdef __GNUC__
00032 #pragma interface
00033 #endif
00034 
00035 #include <math/scmat/matrix.h>
00036 
00037 namespace sc {
00038 
00042 class NonlinearTransform: public RefCount {
00043   protected:
00044     // The linear part of the nonlinear transform.  This must
00045     // be initialized by derived classes in their
00046     // transform_coordinates routine (or the transform
00047     // members must be overridden so it is ignored).
00048     RefSCMatrix linear_transform_;
00049   public:
00050     ~NonlinearTransform();
00051 
00053     virtual void transform_coordinates(const RefSCVector& x) = 0;
00057     virtual void transform_gradient(const RefSCVector& g);
00061     virtual void transform_hessian(const RefSymmSCMatrix& h);
00065     virtual void transform_ihessian(const RefSymmSCMatrix &ih);
00066 };
00067 
00068 
00069 
00073 class IdentityTransform: public NonlinearTransform {
00074   public:
00075     ~IdentityTransform();
00076 
00079     void transform_coordinates(const RefSCVector& x);
00080     void transform_gradient(const RefSCVector& g);
00081     void transform_hessian(const RefSymmSCMatrix& h);
00082     void transform_ihessian(const RefSymmSCMatrix &ih);
00083 };
00084 
00085 }
00086 
00087 #endif
00088 
00089 // Local Variables:
00090 // mode: c++
00091 // c-file-style: "CLJ"
00092 // End: