LineSampler.h

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/********************************************************************
**                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   : ICLCore/src/ICLCore/LineSampler.h                      **
** Module : ICLCore                                                **
** 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.                                          **
**                                                                 **
********************************************************************/

#pragma once

#include <ICLUtils/CompatMacros.h>
#include <ICLUtils/Point.h>
#include <ICLUtils/Rect.h>
#include <ICLUtils/Exception.h>

#include <vector>


namespace icl{
  namespace core{

    class ICLCore_API LineSampler{
      protected:
      std::vector<utils::Point> m_buf; 
      std::vector<int> m_br;           
      
      public:
      
      struct Result{
        const utils::Point *points; 
        int n;               
        
        const utils::Point &operator[](int idx) const { return points[idx]; }
      };


      LineSampler(int maxLen=0);
      
      LineSampler(const utils::Rect &br);
      

      void setBoundingRect(const utils::Rect &bb);
      
      void removeBoundingBox(int bufferSize);
      
      Result sample(const utils::Point &a, const utils::Point &b);
      
      void sample(const utils::Point &a, const utils::Point &b, std::vector<utils::Point> &dst);
    };
  
  } // namespace core
}