vpSubRowVector.cpp

/****************************************************************************
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2015 by Inria. All rights reserved.
 *
 * This software is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * ("GPL") version 2 as published by the Free Software Foundation.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See http://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Mask on a vpRowVector .
 *
 * Authors:
 * Laneurit Jean
 *
 *****************************************************************************/

#include <stdlib.h>

#include <visp3/core/vpSubRowVector.h>
#include <visp3/core/vpException.h>

vpSubRowVector::vpSubRowVector()
  : vpRowVector(), pColNum(0), parent(NULL)
{
}

vpSubRowVector::vpSubRowVector(vpRowVector &v, const unsigned int & offset,const unsigned int & ncols)
  : vpRowVector(), pColNum(0), parent(NULL)
{
  init(v, offset, ncols);
}

void vpSubRowVector::init(vpRowVector &v, const unsigned int & offset,const unsigned int & ncols)
{
  if (!v.data) {
    throw(vpException(vpException::fatalError,
                      "Cannot initialize a sub-row vector from an empty parent row vector")) ;
  }
  
  if(offset+ncols<=v.getCols()){
    data=v.data+offset;
      
    rowNum=1;
    colNum = ncols;
    
    pColNum=v.getCols();
    parent=&v;
    
    if(rowPtrs)
      free(rowPtrs);
    
    rowPtrs=(double**) malloc(1 * sizeof(double*));
    for(unsigned int i=0;i<1;i++)
      rowPtrs[i]=v.data+i+offset;
    
    dsize = colNum ;
  } else {
    throw(vpException(vpException::dimensionError,
                      "Cannot create a sub-row vector that is not completely containt in the parrent row vector")) ;
  }
}

vpSubRowVector::~vpSubRowVector(){
  data=NULL ;
}

void vpSubRowVector::checkParentStatus() const
{
  if(!data){
    throw(vpException(vpException::fatalError,
                      "The parent of the current sub-row vector has been destroyed")) ;
  }
  if(pColNum!=parent->getCols()){
    throw(vpException(vpException::dimensionError,
                      "The size of the parent sub-row vector has changed")) ;
  }
}

vpSubRowVector & vpSubRowVector::operator=(const vpSubRowVector &B)
{
  if ( colNum != B.getCols()) {
    throw(vpException(vpException::dimensionError,
                      "Cannot initialize (1x%d) sub-row vector from (1x%d) sub-row vector",
                      colNum, B.getCols())) ;
  }

  for (unsigned int i=0;i<rowNum;i++)
    data[i] = B[i];

  return *this;
}

vpSubRowVector & vpSubRowVector::operator=(const vpRowVector &B)
{
  if ( colNum != B.getCols()) {
    throw(vpException(vpException::dimensionError,
                      "Cannot initialize (1x%d) sub-row vector from (1x%d) row vector",
                      colNum, B.getCols())) ;
  }
    
  for (unsigned int i=0;i<rowNum;i++)
    data[i] = B[i];
    
    return *this;
}

vpSubRowVector & vpSubRowVector::operator=(const vpMatrix &B)
{
  if ((B.getRows()!=1)||(colNum != B.getCols())) {
    throw(vpException(vpException::dimensionError,
                      "Cannot initialize (1x%d) sub-column vector from (%dx%d) matrix",
                      colNum, B.getRows(), B.getCols())) ;
  }
  
  for (unsigned int i=0;i<rowNum;i++)
    data[i] = B[i][1];
  return *this;
}
vpSubRowVector & vpSubRowVector::operator=(const double &x)
{
        for (unsigned int i=0;i<rowNum;i++)
        data[i] = x;
    return *this;
}