HoughLine.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   : ICLCV/src/ICLCV/HoughLine.h                            **
** Module : ICLCV                                                  **
** 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                  **
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** 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/Point32f.h>
#include <ICLCore/ImgBase.h>
#include <vector>

namespace icl{
  namespace cv{

    struct ICLCV_API HoughLine{
      HoughLine();
      

      HoughLine(const utils::Point32f &offs, const utils::Point32f &dir);
      

      HoughLine(icl32f distance, icl32f angle);
  
      void sample(core::ImgBase *image, icl32f r, icl32f g, icl32f b, icl32f alpha=255) const;
      

      static utils::Point32f getIntersection(const HoughLine &a, const HoughLine &b);
      
      static std::vector<utils::Point32f> getPairwiseIntersections(const std::vector<HoughLine> &lines);
  
      static const utils::Point32f NO_INTERSECTION;
      
      float rho() const { return m_distance; }
  
      float theta() const { return m_angle; }
      
    private:
      float m_distance;
      float m_angle;
      utils::Point32f m_offset;
      utils::Point32f m_direction;
    };
  } // namespace cv
}