clear.hh

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//------------------------------------------------------------------------------
// This file is part of the OpenStructure project <www.openstructure.org>
//
// Copyright (C) 2008-2011 by the OpenStructure authors
// Copyright (C) 2003-2010 by the IPLT authors
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License as published by the Free
// Software Foundation; either version 3.0 of the License, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
// details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//------------------------------------------------------------------------------

#ifndef IMG_ALG_CLEAR_HH
#define IMG_ALG_CLEAR_HH

#include <ost/img/image.hh>
#include <ost/img/image_state.hh>
#include <ost/img/alg/module_config.hh>

namespace ost { namespace img { namespace alg {

namespace {

struct ClearFnc {
  ClearFnc() {}
  template <typename T, class D>
  void VisitState(ImageStateImpl<T,D>& isi) const {
    static const T zero=T(); // default ctor for zero value
    for(T* p = isi.Data().GetData(); p<isi.Data().GetEnd();++p) {
      (*p)=zero;
    }
  }

  static String GetAlgorithmName() {return "Clear";}
};

} // anon ns

typedef ImageStateConstModIPAlgorithm<ClearFnc> Clear;

}

// completely inlined definition does not need template instantiation

  }} // ns



#endif