InsertImage.hpp

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/* ImLib3D
 * Copyright (c) 2001, ULP-IPB Strasbourg.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * This program 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
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

// this one is in its own file because it is needed by the ImageProcessor file
#ifndef _InsertImage_hpp
#define _InsertImage_hpp

#include<ImLib3D/ImageProcessor.hpp>

namespace IP3D
{
    template <class ImageType>
    void InsertImage(const ImageType& src,const ImageType& insert,const Vect3Di &pos,ImageType& res);
};


namespace IP3D
{
template <class ImageType>
void
InsertImage(const ImageType& src,const ImageType& insert,const Vect3Di &pos,ImageType& res)
{
    if(&res!=&src){res=src;}

    RectZone3Di zone(pos,pos+insert.SizeV()-Vect3Di(1,1,1));
    typename ImageType::iteratorZone rp(zone);
    typename ImageType::const_iteratorFast op;
    for( op=insert.begin(),rp=res.begin(); rp!=res.end(); ++op,++rp )
    {
        *rp=*op;
    }
}

template <class ImageType>
void
ResizeImageSupport(const ImageType &src,const Size3D &newSize,ImageType &res0,const typename ImageType::value_type *fillValue=NULL)
{
    ImageProcessorArgs<ImageType> args(ImArgs(src),res0);
    args.SetDestSize(newSize);
    ImageType &res=args.GetDest();
    // mask management
    bool hasMask=src.HasMask();
    if(hasMask && !res.HasMask()){res.AddMask();}

    // determine background value
    typename ImageType::value_type background;
    if(fillValue){background=*fillValue;}
    else
    {
        SetZero<typename ImageType::value_type>::Set(background,false);
    }
    // now actually copy data
    for(typename ImageType::iteratorXYZ p=res.begin();p!=res.end();p++)
    {
        if(src.IsInside(p.Pos()))
        {
            *p=src(p.Pos());
            if(hasMask){res.Mask(p.Pos())=src.Mask(p.Pos());}
        }
        else
        {
            *p=background;
            if(hasMask){res.Mask(p.Pos())=0;}
        }
    }
}

}//IP3DCLOSE


#endif// _InsertImage_hpp

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