/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLFilter/src/ICLFilter/MirrorOp.cpp                   **
** Module : ICLFilter                                              **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#include <ICLFilter/MirrorOp.h>
#include <ICLCore/Img.h>

using namespace icl::utils;
using namespace icl::core;

namespace icl{
  namespace filter{
     template<typename T>
     void MirrorOp::mirror (const ImgBase *poSrc, ImgBase *poDst) {
        const Img<T> *poS = (const Img<T>*) poSrc;
        Img<T> *poD = (Img<T>*) poDst;
        for(int c=0; c < poSrc->getChannels(); c++) {
           flippedCopyChannelROI (m_eAxis, poS, c, m_oSrcOffset, m_oSize,
                                  poD, c, m_oDstOffset, m_oSize);
        }
     }
  
     MirrorOp::MirrorOp (axis eAxis) :
        m_eAxis (eAxis)
     {
        this->m_aMethods[depth8u] = &MirrorOp::mirror<icl8u>;
        this->m_aMethods[depth16s] = &MirrorOp::mirror<icl16s>;
        this->m_aMethods[depth32s] = &MirrorOp::mirror<icl32s>;
        this->m_aMethods[depth32f] = &MirrorOp::mirror<icl32f>;
        this->m_aMethods[depth64f] = &MirrorOp::mirror<icl64f>;
     }
  
     void MirrorOp::apply (const ImgBase *poSrc, ImgBase **ppoDst) {
        Point oROIOffset;
        if (getClipToROI()) {
           m_oSrcOffset = poSrc->getROIOffset();
           oROIOffset = m_oDstOffset = Point::null;
           m_oSize = poSrc->getROISize();
        } else {
           m_oDstOffset = m_oSrcOffset = Point::null;
           m_oSize = poSrc->getSize();
  
           oROIOffset = poSrc->getROIOffset();
           if (m_eAxis == axisHorz || m_eAxis == axisBoth) 
              oROIOffset.y = m_oSize.height - oROIOffset.y - poSrc->getROISize().height;
           if (m_eAxis == axisVert || m_eAxis == axisBoth) 
              oROIOffset.x = m_oSize.width - oROIOffset.x - poSrc->getROISize().width;
        }
  
        if (UnaryOp::prepare (ppoDst, poSrc->getDepth(), m_oSize, 
                             poSrc->getFormat(), poSrc->getChannels(),
                             Rect (oROIOffset, poSrc->getROISize()), poSrc->getTime()))
           (this->*(m_aMethods[poSrc->getDepth()]))(poSrc, *ppoDst);
     }
  } // namespace filter
}