vpProjectionDisplay.cpp

/****************************************************************************
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2017 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:
 * Interface with the image for feature display.
 *
 * Authors:
 * Eric Marchand
 *
 *****************************************************************************/


#include <visp3/core/vpConfig.h>
#if defined (VISP_HAVE_DISPLAY)

// Meter/pixel conversion
#include <visp3/core/vpCameraParameters.h>
#include <visp3/core/vpMeterPixelConversion.h>
#include <visp3/core/vpPoint.h>
#include <visp3/core/vpMath.h>

//Color / image / display
#include <visp3/core/vpColor.h>
#include <visp3/core/vpImage.h>

#include <visp3/core/vpDisplay.h>

#include <visp3/gui/vpProjectionDisplay.h>

//#include <visp3/visual_features/vpBasicFeature.h>


void
vpProjectionDisplay::insert( vpForwardProjection &fp)
{
  // vpForwardProjection *f ;
  //  f = fp.duplicate() ;
  //  f->setDeallocate(vpForwardProjection::vpDisplayForwardProjection) ;

  listFp.push_back(&fp);
}

void
vpProjectionDisplay::init()
{
  o.setWorldCoordinates(0,0,0) ;
  x.setWorldCoordinates(0.1,0,0) ;
  y.setWorldCoordinates(0,0.1,0) ;
  z.setWorldCoordinates(0,0,0.1) ;
  traj.resize(0,2);
}
void
vpProjectionDisplay::init(const int select)
{
  if (select & vpProjectionDisplay::internalView())
  {
    Icam.resize(256,256) ;
    dIcam.init(Icam,100,100) ;
  }
  if (select & vpProjectionDisplay::externalView())
  {
    Iext.resize(256,256) ;
    dIext.init(Iext,400,100) ;
  }

  init() ;
}


void
vpProjectionDisplay::close()
{

}

void
vpProjectionDisplay::display(vpImage<unsigned char> &I,
                             const vpHomogeneousMatrix &cextMo,
                             const vpHomogeneousMatrix &cMo,
                             const vpCameraParameters &cam,
                             const vpColor &color,
                             const bool &displayTraj,
                             const unsigned int thickness)
{

  for (std::list<vpForwardProjection *>::const_iterator it = listFp.begin() ; it != listFp.end(); ++it )
    {
      vpForwardProjection *fp = *it ;
      fp->display(I,cextMo, cam, color, thickness) ;
    }

    if(displayTraj) // display past camera positions
        for(unsigned int i=0;i<traj.getRows();++i)
            vpDisplay::displayCircle(I,(int)traj[i][0],(int)traj[i][1],2,vpColor::green,true);

    displayCamera(I, cextMo, cMo, cam, thickness);

    if(displayTraj) // store current camera position
    {
      const unsigned int n = traj.getRows();
      traj.resize(n+1, 2, false);
        vpMeterPixelConversion::convertPoint(cam,o.p[0],o.p[1],traj[n][1],traj[n][0]);
    }
}


void
vpProjectionDisplay::displayCamera(vpImage<unsigned char> &I,
                                   const vpHomogeneousMatrix &cextMo,
                                   const vpHomogeneousMatrix &cMo,
                                   const vpCameraParameters &cam,
                                   const unsigned int thickness)
{
  vpHomogeneousMatrix c1Mc ;
  c1Mc = cextMo*cMo.inverse() ;

  o.track(c1Mc) ;

  if(o.get_Z() < 0) // do not print camera if behind the external camera
      return;

  x.track(c1Mc) ;
  y.track(c1Mc) ;
  z.track(c1Mc) ;

  vpImagePoint ipo;
  vpImagePoint ipx;

  vpMeterPixelConversion::convertPoint(cam, o.p[0], o.p[1], ipo) ;

  vpMeterPixelConversion::convertPoint(cam, x.p[0], x.p[1], ipx) ;
  vpDisplay::displayArrow(I, ipo, ipx, vpColor::green, 4+thickness, 2+thickness, thickness) ;

  vpMeterPixelConversion::convertPoint(cam, y.p[0], y.p[1], ipx) ;
  vpDisplay::displayArrow(I, ipo, ipx, vpColor::blue, 4+thickness, 2+thickness, thickness) ;

  vpMeterPixelConversion::convertPoint(cam, z.p[0], z.p[1], ipx) ;
  vpDisplay::displayArrow(I, ipo, ipx, vpColor::red, 4+thickness, 2+thickness, thickness) ;
}

#elif !defined(VISP_BUILD_SHARED_LIBS)
// Work arround to avoid warning: libvisp_core.a(vpProjectionDisplay.cpp.o) has no symbols
void dummy_vpProjectionDisplay() {};
#endif